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diff --git a/node_modules/uglify-js/LICENSE b/node_modules/uglify-js/LICENSE
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+UglifyJS is released under the BSD license:
+
+Copyright 2012-2013 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+    * Redistributions of source code must retain the above
+      copyright notice, this list of conditions and the following
+      disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials
+      provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
diff --git a/node_modules/uglify-js/README.md b/node_modules/uglify-js/README.md
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+UglifyJS 2
+==========
+[![Build Status](https://travis-ci.org/mishoo/UglifyJS2.svg)](https://travis-ci.org/mishoo/UglifyJS2)
+
+UglifyJS is a JavaScript parser, minifier, compressor or beautifier toolkit.
+
+This page documents the command line utility.  For
+[API and internals documentation see my website](http://lisperator.net/uglifyjs/).
+There's also an
+[in-browser online demo](http://lisperator.net/uglifyjs/#demo) (for Firefox,
+Chrome and probably Safari).
+
+#### Note:
+- release versions of `uglify-js` only support ECMAScript 5 (ES5). If you wish to minify
+ES2015+ (ES6+) code then please use the [harmony](#harmony) development branch.
+- Node 7 has a known performance regression and runs `uglify-js` twice as slow.
+
+Install
+-------
+
+First make sure you have installed the latest version of [node.js](http://nodejs.org/)
+(You may need to restart your computer after this step).
+
+From NPM for use as a command line app:
+
+    npm install uglify-js -g
+
+From NPM for programmatic use:
+
+    npm install uglify-js
+
+From Git:
+
+    git clone git://github.com/mishoo/UglifyJS2.git
+    cd UglifyJS2
+    npm link .
+
+Usage
+-----
+
+    uglifyjs [input files] [options]
+
+UglifyJS2 can take multiple input files.  It's recommended that you pass the
+input files first, then pass the options.  UglifyJS will parse input files
+in sequence and apply any compression options.  The files are parsed in the
+same global scope, that is, a reference from a file to some
+variable/function declared in another file will be matched properly.
+
+If you want to read from STDIN instead, pass a single dash instead of input
+files.
+
+If you wish to pass your options before the input files, separate the two with
+a double dash to prevent input files being used as option arguments:
+
+    uglifyjs --compress --mangle -- input.js
+
+The available options are:
+
+```
+  --source-map                  Specify an output file where to generate source
+                                map.
+  --source-map-root             The path to the original source to be included
+                                in the source map.
+  --source-map-url              The path to the source map to be added in //#
+                                sourceMappingURL.  Defaults to the value passed
+                                with --source-map.
+  --source-map-include-sources  Pass this flag if you want to include the
+                                content of source files in the source map as
+                                sourcesContent property.
+  --source-map-inline           Write base64-encoded source map to the end of js output.
+  --in-source-map               Input source map, useful if you're compressing
+                                JS that was generated from some other original
+                                code. Specify "inline" if the source map is included
+                                inline with the sources.
+  --screw-ie8                   Use this flag if you don't wish to support
+                                Internet Explorer 6/7/8.
+                                By default UglifyJS will not try to be IE-proof.
+  --support-ie8                 Use this flag to support Internet Explorer 6/7/8.
+                                Equivalent to setting `screw_ie8: false` in `minify()`
+                                for `compress`, `mangle` and `output` options.
+  --expr                        Parse a single expression, rather than a
+                                program (for parsing JSON)
+  -p, --prefix                  Skip prefix for original filenames that appear
+                                in source maps. For example -p 3 will drop 3
+                                directories from file names and ensure they are
+                                relative paths. You can also specify -p
+                                relative, which will make UglifyJS figure out
+                                itself the relative paths between original
+                                sources, the source map and the output file.
+  -o, --output                  Output file (default STDOUT).
+  -b, --beautify                Beautify output/specify output options.
+  -m, --mangle                  Mangle names/pass mangler options.
+  -r, --reserved                Reserved names to exclude from mangling.
+  -c, --compress                Enable compressor/pass compressor options, e.g.
+                                `-c 'if_return=false,pure_funcs=["Math.pow","console.log"]'`
+                                Use `-c` with no argument to enable default compression
+                                options.
+  -d, --define                  Global definitions
+  -e, --enclose                 Embed everything in a big function, with a
+                                configurable parameter/argument list.
+  --comments                    Preserve copyright comments in the output. By
+                                default this works like Google Closure, keeping
+                                JSDoc-style comments that contain "@license" or
+                                "@preserve". You can optionally pass one of the
+                                following arguments to this flag:
+                                - "all" to keep all comments
+                                - a valid JS RegExp like `/foo/` or `/^!/` to
+                                keep only matching comments.
+                                Note that currently not *all* comments can be
+                                kept when compression is on, because of dead
+                                code removal or cascading statements into
+                                sequences.
+  --preamble                    Preamble to prepend to the output.  You can use
+                                this to insert a comment, for example for
+                                licensing information.  This will not be
+                                parsed, but the source map will adjust for its
+                                presence.
+  --stats                       Display operations run time on STDERR.
+  --acorn                       Use Acorn for parsing.
+  --spidermonkey                Assume input files are SpiderMonkey AST format
+                                (as JSON).
+  --self                        Build itself (UglifyJS2) as a library (implies
+                                --wrap=UglifyJS --export-all)
+  --wrap                        Embed everything in a big function, making the
+                                “exports” and “global” variables available. You
+                                need to pass an argument to this option to
+                                specify the name that your module will take
+                                when included in, say, a browser.
+  --export-all                  Only used when --wrap, this tells UglifyJS to
+                                add code to automatically export all globals.
+  --lint                        Display some scope warnings
+  -v, --verbose                 Verbose
+  -V, --version                 Print version number and exit.
+  --noerr                       Don't throw an error for unknown options in -c,
+                                -b or -m.
+  --bare-returns                Allow return outside of functions.  Useful when
+                                minifying CommonJS modules and Userscripts that
+                                may be anonymous function wrapped (IIFE) by the
+                                .user.js engine `caller`.
+  --keep-fnames                 Do not mangle/drop function names.  Useful for
+                                code relying on Function.prototype.name.
+  --reserved-file               File containing reserved names
+  --reserve-domprops            Make (most?) DOM properties reserved for
+                                --mangle-props
+  --mangle-props                Mangle property names (default `0`). Set to
+                                `true` or `1` to mangle all property names. Set
+                                to `unquoted` or `2` to only mangle unquoted
+                                property names. Mode `2` also enables the
+                                `keep_quoted_props` beautifier option to
+                                preserve the quotes around property names and
+                                disables the `properties` compressor option to
+                                prevent rewriting quoted properties with dot
+                                notation. You can override these by setting
+                                them explicitly on the command line.
+  --mangle-regex                Only mangle property names matching the regex
+  --name-cache                  File to hold mangled names mappings
+  --pure-funcs                  Functions that can be safely removed if their
+                                return value is not used, e.g.
+                                `--pure-funcs Math.floor console.info`
+                                (requires `--compress`)
+```
+
+Specify `--output` (`-o`) to declare the output file.  Otherwise the output
+goes to STDOUT.
+
+## Source map options
+
+UglifyJS2 can generate a source map file, which is highly useful for
+debugging your compressed JavaScript.  To get a source map, pass
+`--source-map output.js.map` (full path to the file where you want the
+source map dumped).
+
+Additionally you might need `--source-map-root` to pass the URL where the
+original files can be found.  In case you are passing full paths to input
+files to UglifyJS, you can use `--prefix` (`-p`) to specify the number of
+directories to drop from the path prefix when declaring files in the source
+map.
+
+For example:
+
+    uglifyjs /home/doe/work/foo/src/js/file1.js \
+             /home/doe/work/foo/src/js/file2.js \
+             -o foo.min.js \
+             --source-map foo.min.js.map \
+             --source-map-root http://foo.com/src \
+             -p 5 -c -m
+
+The above will compress and mangle `file1.js` and `file2.js`, will drop the
+output in `foo.min.js` and the source map in `foo.min.js.map`.  The source
+mapping will refer to `http://foo.com/src/js/file1.js` and
+`http://foo.com/src/js/file2.js` (in fact it will list `http://foo.com/src`
+as the source map root, and the original files as `js/file1.js` and
+`js/file2.js`).
+
+### Composed source map
+
+When you're compressing JS code that was output by a compiler such as
+CoffeeScript, mapping to the JS code won't be too helpful.  Instead, you'd
+like to map back to the original code (i.e. CoffeeScript).  UglifyJS has an
+option to take an input source map.  Assuming you have a mapping from
+CoffeeScript → compiled JS, UglifyJS can generate a map from CoffeeScript →
+compressed JS by mapping every token in the compiled JS to its original
+location.
+
+To use this feature you need to pass `--in-source-map
+/path/to/input/source.map` or `--in-source-map inline` if the source map is
+included inline with the sources. Normally the input source map should also
+point to the file containing the generated JS, so if that's correct you can
+omit input files from the command line.
+
+## Mangler options
+
+To enable the mangler you need to pass `--mangle` (`-m`).  The following
+(comma-separated) options are supported:
+
+- `toplevel` — mangle names declared in the toplevel scope (disabled by
+  default).
+
+- `eval` — mangle names visible in scopes where `eval` or `with` are used
+  (disabled by default).
+
+When mangling is enabled but you want to prevent certain names from being
+mangled, you can declare those names with `--reserved` (`-r`) — pass a
+comma-separated list of names.  For example:
+
+    uglifyjs ... -m -r '$,require,exports'
+
+to prevent the `require`, `exports` and `$` names from being changed.
+
+### Mangling property names (`--mangle-props`)
+
+**Note:** this will probably break your code.  Mangling property names is a
+separate step, different from variable name mangling.  Pass
+`--mangle-props`.  It will mangle all properties that are seen in some
+object literal, or that are assigned to.  For example:
+
+```js
+var x = {
+  foo: 1
+};
+
+x.bar = 2;
+x["baz"] = 3;
+x[condition ? "moo" : "boo"] = 4;
+console.log(x.something());
+```
+
+In the above code, `foo`, `bar`, `baz`, `moo` and `boo` will be replaced
+with single characters, while `something()` will be left as is.
+
+In order for this to be of any use, we should avoid mangling standard JS
+names.  For instance, if your code would contain `x.length = 10`, then
+`length` becomes a candidate for mangling and it will be mangled throughout
+the code, regardless if it's being used as part of your own objects or
+accessing an array's length.  To avoid that, you can use `--reserved-file`
+to pass a filename that should contain the names to be excluded from
+mangling.  This file can be used both for excluding variable names and
+property names.  It could look like this, for example:
+
+```js
+{
+  "vars": [ "define", "require", ... ],
+  "props": [ "length", "prototype", ... ]
+}
+```
+
+`--reserved-file` can be an array of file names (either a single
+comma-separated argument, or you can pass multiple `--reserved-file`
+arguments) — in this case it will exclude names from all those files.
+
+A default exclusion file is provided in `tools/domprops.json` which should
+cover most standard JS and DOM properties defined in various browsers.  Pass
+`--reserve-domprops` to read that in.
+
+You can also use a regular expression to define which property names should be
+mangled.  For example, `--mangle-regex="/^_/"` will only mangle property names
+that start with an underscore.
+
+When you compress multiple files using this option, in order for them to
+work together in the end we need to ensure somehow that one property gets
+mangled to the same name in all of them.  For this, pass `--name-cache
+filename.json` and UglifyJS will maintain these mappings in a file which can
+then be reused.  It should be initially empty.  Example:
+
+```
+rm -f /tmp/cache.json  # start fresh
+uglifyjs file1.js file2.js --mangle-props --name-cache /tmp/cache.json -o part1.js
+uglifyjs file3.js file4.js --mangle-props --name-cache /tmp/cache.json -o part2.js
+```
+
+Now, `part1.js` and `part2.js` will be consistent with each other in terms
+of mangled property names.
+
+Using the name cache is not necessary if you compress all your files in a
+single call to UglifyJS.
+
+#### Mangling unquoted names (`--mangle-props=unquoted` or `--mangle-props=2`)
+
+Using quoted property name (`o["foo"]`) reserves the property name (`foo`)
+so that it is not mangled throughout the entire script even when used in an
+unquoted style (`o.foo`). Example:
+
+```
+$ echo 'var o={"foo":1, bar:3}; o.foo += o.bar; console.log(o.foo);' | uglifyjs --mangle-props=2 -mc
+var o={"foo":1,a:3};o.foo+=o.a,console.log(o.foo);
+```
+
+#### Debugging property name mangling
+
+You can also pass `--mangle-props-debug` in order to mangle property names
+without completely obscuring them. For example the property `o.foo`
+would mangle to `o._$foo$_` with this option. This allows property mangling
+of a large codebase while still being able to debug the code and identify
+where mangling is breaking things.
+
+You can also pass a custom suffix using `--mangle-props-debug=XYZ`. This would then
+mangle `o.foo` to `o._$foo$XYZ_`. You can change this each time you compile a
+script to identify how a property got mangled. One technique is to pass a
+random number on every compile to simulate mangling changing with different
+inputs (e.g. as you update the input script with new properties), and to help
+identify mistakes like writing mangled keys to storage.
+
+## Compressor options
+
+You need to pass `--compress` (`-c`) to enable the compressor.  Optionally
+you can pass a comma-separated list of options.  Options are in the form
+`foo=bar`, or just `foo` (the latter implies a boolean option that you want
+to set `true`; it's effectively a shortcut for `foo=true`).
+
+- `sequences` (default: true) -- join consecutive simple statements using the
+  comma operator.  May be set to a positive integer to specify the maximum number
+  of consecutive comma sequences that will be generated. If this option is set to
+  `true` then the default `sequences` limit is `200`. Set option to `false` or `0`
+  to disable. The smallest `sequences` length is `2`. A `sequences` value of `1`
+  is grandfathered to be equivalent to `true` and as such means `200`. On rare
+  occasions the default sequences limit leads to very slow compress times in which
+  case a value of `20` or less is recommended.
+
+- `properties` -- rewrite property access using the dot notation, for
+  example `foo["bar"] → foo.bar`
+
+- `dead_code` -- remove unreachable code
+
+- `drop_debugger` -- remove `debugger;` statements
+
+- `unsafe` (default: false) -- apply "unsafe" transformations (discussion below)
+
+- `unsafe_comps` (default: false) -- Reverse `<` and `<=` to `>` and `>=` to
+  allow improved compression. This might be unsafe when an at least one of two
+  operands is an object with computed values due the use of methods like `get`,
+  or `valueOf`. This could cause change in execution order after operands in the
+  comparison are switching. Compression only works if both `comparisons` and
+  `unsafe_comps` are both set to true.
+
+- `unsafe_math` (default: false) -- optimize numerical expressions like
+  `2 * x * 3` into `6 * x`, which may give imprecise floating point results.
+
+- `unsafe_proto` (default: false) -- optimize expressions like
+  `Array.prototype.slice.call(a)` into `[].slice.call(a)`
+
+- `conditionals` -- apply optimizations for `if`-s and conditional
+  expressions
+
+- `comparisons` -- apply certain optimizations to binary nodes, for example:
+  `!(a <= b) → a > b` (only when `unsafe_comps`), attempts to negate binary
+  nodes, e.g. `a = !b && !c && !d && !e → a=!(b||c||d||e)` etc.
+
+- `evaluate` -- attempt to evaluate constant expressions
+
+- `booleans` -- various optimizations for boolean context, for example `!!a
+  ? b : c → a ? b : c`
+
+- `loops` -- optimizations for `do`, `while` and `for` loops when we can
+  statically determine the condition
+
+- `unused` -- drop unreferenced functions and variables (simple direct variable
+  assignments do not count as references unless set to `"keep_assign"`)
+
+- `toplevel` -- drop unreferenced functions (`"funcs"`) and/or variables (`"vars"`)
+  in the toplevel scope (`false` by default, `true` to drop both unreferenced
+  functions and variables)
+
+- `top_retain` -- prevent specific toplevel functions and variables from `unused`
+  removal (can be array, comma-separated, RegExp or function. Implies `toplevel`)
+
+- `hoist_funs` -- hoist function declarations
+
+- `hoist_vars` (default: false) -- hoist `var` declarations (this is `false`
+  by default because it seems to increase the size of the output in general)
+
+- `if_return` -- optimizations for if/return and if/continue
+
+- `join_vars` -- join consecutive `var` statements
+
+- `cascade` -- small optimization for sequences, transform `x, x` into `x`
+  and `x = something(), x` into `x = something()`
+
+- `collapse_vars` -- Collapse single-use `var` and `const` definitions
+  when possible.
+
+- `reduce_vars` -- Improve optimization on variables assigned with and
+  used as constant values.
+
+- `warnings` -- display warnings when dropping unreachable code or unused
+  declarations etc.
+
+- `negate_iife` -- negate "Immediately-Called Function Expressions"
+  where the return value is discarded, to avoid the parens that the
+  code generator would insert.
+
+- `pure_getters` -- the default is `false`.  If you pass `true` for
+  this, UglifyJS will assume that object property access
+  (e.g. `foo.bar` or `foo["bar"]`) doesn't have any side effects.
+  Specify `"strict"` to treat `foo.bar` as side-effect-free only when
+  `foo` is certain to not throw, i.e. not `null` or `undefined`.
+
+- `pure_funcs` -- default `null`.  You can pass an array of names and
+  UglifyJS will assume that those functions do not produce side
+  effects.  DANGER: will not check if the name is redefined in scope.
+  An example case here, for instance `var q = Math.floor(a/b)`.  If
+  variable `q` is not used elsewhere, UglifyJS will drop it, but will
+  still keep the `Math.floor(a/b)`, not knowing what it does.  You can
+  pass `pure_funcs: [ 'Math.floor' ]` to let it know that this
+  function won't produce any side effect, in which case the whole
+  statement would get discarded.  The current implementation adds some
+  overhead (compression will be slower).
+
+- `drop_console` -- default `false`.  Pass `true` to discard calls to
+  `console.*` functions. If you wish to drop a specific function call
+  such as `console.info` and/or retain side effects from function arguments
+  after dropping the function call then use `pure_funcs` instead.
+
+- `expression` -- default `false`.  Pass `true` to preserve completion values
+  from terminal statements without `return`, e.g. in bookmarklets.
+
+- `keep_fargs` -- default `true`.  Prevents the
+  compressor from discarding unused function arguments.  You need this
+  for code which relies on `Function.length`.
+
+- `keep_fnames` -- default `false`.  Pass `true` to prevent the
+  compressor from discarding function names.  Useful for code relying on
+  `Function.prototype.name`. See also: the `keep_fnames` [mangle option](#mangle).
+
+- `passes` -- default `1`. Number of times to run compress. Use an
+  integer argument larger than 1 to further reduce code size in some cases.
+  Note: raising the number of passes will increase uglify compress time.
+
+- `keep_infinity` -- default `false`. Pass `true` to prevent `Infinity` from
+  being compressed into `1/0`, which may cause performance issues on Chrome.
+
+### The `unsafe` option
+
+It enables some transformations that *might* break code logic in certain
+contrived cases, but should be fine for most code.  You might want to try it
+on your own code, it should reduce the minified size.  Here's what happens
+when this flag is on:
+
+- `new Array(1, 2, 3)` or `Array(1, 2, 3)` → `[ 1, 2, 3 ]`
+- `new Object()` → `{}`
+- `String(exp)` or `exp.toString()` → `"" + exp`
+- `new Object/RegExp/Function/Error/Array (...)` → we discard the `new`
+- `typeof foo == "undefined"` → `foo === void 0`
+- `void 0` → `undefined` (if there is a variable named "undefined" in
+  scope; we do it because the variable name will be mangled, typically
+  reduced to a single character)
+
+### Conditional compilation
+
+You can use the `--define` (`-d`) switch in order to declare global
+variables that UglifyJS will assume to be constants (unless defined in
+scope).  For example if you pass `--define DEBUG=false` then, coupled with
+dead code removal UglifyJS will discard the following from the output:
+```javascript
+if (DEBUG) {
+	console.log("debug stuff");
+}
+```
+
+You can specify nested constants in the form of `--define env.DEBUG=false`.
+
+UglifyJS will warn about the condition being always false and about dropping
+unreachable code; for now there is no option to turn off only this specific
+warning, you can pass `warnings=false` to turn off *all* warnings.
+
+Another way of doing that is to declare your globals as constants in a
+separate file and include it into the build.  For example you can have a
+`build/defines.js` file with the following:
+```javascript
+const DEBUG = false;
+const PRODUCTION = true;
+// etc.
+```
+
+and build your code like this:
+
+    uglifyjs build/defines.js js/foo.js js/bar.js... -c
+
+UglifyJS will notice the constants and, since they cannot be altered, it
+will evaluate references to them to the value itself and drop unreachable
+code as usual.  The build will contain the `const` declarations if you use
+them. If you are targeting < ES6 environments which does not support `const`,
+using `var` with `reduce_vars` (enabled by default) should suffice.
+
+<a name="codegen-options"></a>
+
+#### Conditional compilation, API
+You can also use conditional compilation via the programmatic API. With the difference that the
+property name is `global_defs` and is a compressor property:
+
+```js
+uglifyJS.minify([ "input.js"], {
+    compress: {
+        dead_code: true,
+        global_defs: {
+            DEBUG: false
+        }
+    }
+});
+```
+
+## Beautifier options
+
+The code generator tries to output shortest code possible by default.  In
+case you want beautified output, pass `--beautify` (`-b`).  Optionally you
+can pass additional arguments that control the code output:
+
+- `beautify` (default `true`) -- whether to actually beautify the output.
+  Passing `-b` will set this to true, but you might need to pass `-b` even
+  when you want to generate minified code, in order to specify additional
+  arguments, so you can use `-b beautify=false` to override it.
+- `indent-level` (default 4)
+- `indent-start` (default 0) -- prefix all lines by that many spaces
+- `quote-keys` (default `false`) -- pass `true` to quote all keys in literal
+  objects
+- `space-colon` (default `true`) -- insert a space after the colon signs
+- `ascii-only` (default `false`) -- escape Unicode characters in strings and
+  regexps (affects directives with non-ascii characters becoming invalid)
+- `inline-script` (default `false`) -- escape the slash in occurrences of
+  `</script` in strings
+- `width` (default 80) -- only takes effect when beautification is on, this
+  specifies an (orientative) line width that the beautifier will try to
+  obey.  It refers to the width of the line text (excluding indentation).
+  It doesn't work very well currently, but it does make the code generated
+  by UglifyJS more readable.
+- `max-line-len` (default 32000) -- maximum line length (for uglified code)
+- `bracketize` (default `false`) -- always insert brackets in `if`, `for`,
+  `do`, `while` or `with` statements, even if their body is a single
+  statement.
+- `semicolons` (default `true`) -- separate statements with semicolons.  If
+  you pass `false` then whenever possible we will use a newline instead of a
+  semicolon, leading to more readable output of uglified code (size before
+  gzip could be smaller; size after gzip insignificantly larger).
+- `preamble` (default `null`) -- when passed it must be a string and
+  it will be prepended to the output literally.  The source map will
+  adjust for this text.  Can be used to insert a comment containing
+  licensing information, for example.
+- `quote_style` (default `0`) -- preferred quote style for strings (affects
+  quoted property names and directives as well):
+  - `0` -- prefers double quotes, switches to single quotes when there are
+    more double quotes in the string itself.
+  - `1` -- always use single quotes
+  - `2` -- always use double quotes
+  - `3` -- always use the original quotes
+- `keep_quoted_props` (default `false`) -- when turned on, prevents stripping
+  quotes from property names in object literals.
+
+### Keeping copyright notices or other comments
+
+You can pass `--comments` to retain certain comments in the output.  By
+default it will keep JSDoc-style comments that contain "@preserve",
+"@license" or "@cc_on" (conditional compilation for IE).  You can pass
+`--comments all` to keep all the comments, or a valid JavaScript regexp to
+keep only comments that match this regexp.  For example `--comments
+'/foo|bar/'` will keep only comments that contain "foo" or "bar".
+
+Note, however, that there might be situations where comments are lost.  For
+example:
+```javascript
+function f() {
+	/** @preserve Foo Bar */
+	function g() {
+	  // this function is never called
+	}
+	return something();
+}
+```
+
+Even though it has "@preserve", the comment will be lost because the inner
+function `g` (which is the AST node to which the comment is attached to) is
+discarded by the compressor as not referenced.
+
+The safest comments where to place copyright information (or other info that
+needs to be kept in the output) are comments attached to toplevel nodes.
+
+## Support for the SpiderMonkey AST
+
+UglifyJS2 has its own abstract syntax tree format; for
+[practical reasons](http://lisperator.net/blog/uglifyjs-why-not-switching-to-spidermonkey-ast/)
+we can't easily change to using the SpiderMonkey AST internally.  However,
+UglifyJS now has a converter which can import a SpiderMonkey AST.
+
+For example [Acorn][acorn] is a super-fast parser that produces a
+SpiderMonkey AST.  It has a small CLI utility that parses one file and dumps
+the AST in JSON on the standard output.  To use UglifyJS to mangle and
+compress that:
+
+    acorn file.js | uglifyjs --spidermonkey -m -c
+
+The `--spidermonkey` option tells UglifyJS that all input files are not
+JavaScript, but JS code described in SpiderMonkey AST in JSON.  Therefore we
+don't use our own parser in this case, but just transform that AST into our
+internal AST.
+
+### Use Acorn for parsing
+
+More for fun, I added the `--acorn` option which will use Acorn to do all
+the parsing.  If you pass this option, UglifyJS will `require("acorn")`.
+
+Acorn is really fast (e.g. 250ms instead of 380ms on some 650K code), but
+converting the SpiderMonkey tree that Acorn produces takes another 150ms so
+in total it's a bit more than just using UglifyJS's own parser.
+
+### Using UglifyJS to transform SpiderMonkey AST
+
+Now you can use UglifyJS as any other intermediate tool for transforming
+JavaScript ASTs in SpiderMonkey format.
+
+Example:
+
+```javascript
+function uglify(ast, options, mangle) {
+  // Conversion from SpiderMonkey AST to internal format
+  var uAST = UglifyJS.AST_Node.from_mozilla_ast(ast);
+
+  // Compression
+  uAST.figure_out_scope();
+  uAST = UglifyJS.Compressor(options).compress(uAST);
+
+  // Mangling (optional)
+  if (mangle) {
+    uAST.figure_out_scope();
+    uAST.compute_char_frequency();
+    uAST.mangle_names();
+  }
+
+  // Back-conversion to SpiderMonkey AST
+  return uAST.to_mozilla_ast();
+}
+```
+
+Check out
+[original blog post](http://rreverser.com/using-mozilla-ast-with-uglifyjs/)
+for details.
+
+API Reference
+-------------
+
+Assuming installation via NPM, you can load UglifyJS in your application
+like this:
+```javascript
+var UglifyJS = require("uglify-js");
+```
+
+It exports a lot of names, but I'll discuss here the basics that are needed
+for parsing, mangling and compressing a piece of code.  The sequence is (1)
+parse, (2) compress, (3) mangle, (4) generate output code.
+
+### The simple way
+
+There's a single toplevel function which combines all the steps.  If you
+don't need additional customization, you might want to go with `minify`.
+Example:
+```javascript
+var result = UglifyJS.minify("/path/to/file.js");
+console.log(result.code); // minified output
+// if you need to pass code instead of file name
+var result = UglifyJS.minify("var b = function () {};", {fromString: true});
+```
+
+You can also compress multiple files:
+```javascript
+var result = UglifyJS.minify([ "file1.js", "file2.js", "file3.js" ]);
+console.log(result.code);
+```
+
+To generate a source map:
+```javascript
+var result = UglifyJS.minify([ "file1.js", "file2.js", "file3.js" ], {
+	outSourceMap: "out.js.map"
+});
+console.log(result.code); // minified output
+console.log(result.map);
+```
+
+To generate a source map with the fromString option, you can also use an object:
+```javascript
+var result = UglifyJS.minify({"file1.js": "var a = function () {};"}, {
+  outSourceMap: "out.js.map",
+  outFileName: "out.js",
+  fromString: true
+});
+```
+
+Note that the source map is not saved in a file, it's just returned in
+`result.map`.  The value passed for `outSourceMap` is only used to set
+`//# sourceMappingURL=out.js.map` in `result.code`. The value of
+`outFileName` is only used to set `file` attribute in source map file.
+
+The `file` attribute in the source map (see [the spec][sm-spec]) will
+use `outFileName` firstly, if it's falsy, then will be deduced from
+`outSourceMap` (by removing `'.map'`).
+
+You can set option `sourceMapInline` to be `true` and source map will
+be appended to code.
+
+You can also specify sourceRoot property to be included in source map:
+```javascript
+var result = UglifyJS.minify([ "file1.js", "file2.js", "file3.js" ], {
+	outSourceMap: "out.js.map",
+	sourceRoot: "http://example.com/src"
+});
+```
+
+If you're compressing compiled JavaScript and have a source map for it, you
+can use the `inSourceMap` argument:
+```javascript
+var result = UglifyJS.minify("compiled.js", {
+	inSourceMap: "compiled.js.map",
+	outSourceMap: "minified.js.map"
+});
+// same as before, it returns `code` and `map`
+```
+
+If your input source map is not in a file, you can pass it in as an object
+using the `inSourceMap` argument:
+
+```javascript
+var result = UglifyJS.minify("compiled.js", {
+	inSourceMap: JSON.parse(my_source_map_string),
+	outSourceMap: "minified.js.map"
+});
+```
+
+The `inSourceMap` is only used if you also request `outSourceMap` (it makes
+no sense otherwise).
+
+To set the source map url, use the `sourceMapUrl` option.
+If you're using the X-SourceMap header instead, you can just set the `sourceMapUrl` option to false.
+Defaults to outSourceMap:
+
+```javascript
+var result = UglifyJS.minify([ "file1.js" ], {
+  outSourceMap: "out.js.map",
+  sourceMapUrl: "localhost/out.js.map"
+});
+```
+
+Other options:
+
+- `warnings` (default `false`) — pass `true` to display compressor warnings.
+
+- `fromString` (default `false`) — if you pass `true` then you can pass
+  JavaScript source code, rather than file names.
+
+- `mangle` (default `true`) — pass `false` to skip mangling names, or pass
+  an object to specify mangling options (see below).
+
+- `mangleProperties` (default `false`) — pass an object to specify custom
+  mangle property options.
+
+- `output` (default `null`) — pass an object if you wish to specify
+  additional [output options][codegen].  The defaults are optimized
+  for best compression.
+
+- `compress` (default `{}`) — pass `false` to skip compressing entirely.
+  Pass an object to specify custom [compressor options][compressor].
+
+- `parse` (default {}) — pass an object if you wish to specify some
+  additional [parser options][parser]. (not all options available... see below)
+
+##### mangle
+
+ - `except` - pass an array of identifiers that should be excluded from mangling
+
+ - `toplevel` — mangle names declared in the toplevel scope (disabled by
+  default).
+
+ - `eval` — mangle names visible in scopes where eval or with are used
+  (disabled by default).
+
+ - `keep_fnames` -- default `false`.  Pass `true` to not mangle
+  function names.  Useful for code relying on `Function.prototype.name`.
+  See also: the `keep_fnames` [compress option](#compressor-options).
+
+  Examples:
+
+  ```javascript
+  //tst.js
+  var globalVar;
+  function funcName(firstLongName, anotherLongName)
+  {
+    var myVariable = firstLongName +  anotherLongName;
+  }
+
+  UglifyJS.minify("tst.js").code;
+  // 'function funcName(a,n){}var globalVar;'
+
+  UglifyJS.minify("tst.js", { mangle: { except: ['firstLongName'] } }).code;
+  // 'function funcName(firstLongName,a){}var globalVar;'
+
+  UglifyJS.minify("tst.js", { mangle: { toplevel: true } }).code;
+  // 'function n(n,a){}var a;'
+  ```
+
+##### mangleProperties options
+
+ - `regex` — Pass a RegExp to only mangle certain names (maps to the `--mangle-regex` CLI arguments option)
+ - `ignore_quoted` – Only mangle unquoted property names (maps to the `--mangle-props 2` CLI arguments option)
+ - `debug` – Mangle names with the original name still present (maps to the `--mangle-props-debug` CLI arguments option). Defaults to `false`. Pass an empty string to enable, or a non-empty string to set the suffix.
+
+We could add more options to `UglifyJS.minify` — if you need additional
+functionality please suggest!
+
+### The hard way
+
+Following there's more detailed API info, in case the `minify` function is
+too simple for your needs.
+
+#### The parser
+```javascript
+var toplevel_ast = UglifyJS.parse(code, options);
+```
+
+`options` is optional and if present it must be an object.  The following
+properties are available:
+
+- `strict` — disable automatic semicolon insertion and support for trailing
+  comma in arrays and objects
+- `bare_returns` — Allow return outside of functions. (maps to the
+  `--bare-returns` CLI arguments option and available to `minify` `parse`
+  other options object)
+- `filename` — the name of the file where this code is coming from
+- `toplevel` — a `toplevel` node (as returned by a previous invocation of
+  `parse`)
+
+The last two options are useful when you'd like to minify multiple files and
+get a single file as the output and a proper source map.  Our CLI tool does
+something like this:
+```javascript
+var toplevel = null;
+files.forEach(function(file){
+	var code = fs.readFileSync(file, "utf8");
+	toplevel = UglifyJS.parse(code, {
+		filename: file,
+		toplevel: toplevel
+	});
+});
+```
+
+After this, we have in `toplevel` a big AST containing all our files, with
+each token having proper information about where it came from.
+
+#### Scope information
+
+UglifyJS contains a scope analyzer that you need to call manually before
+compressing or mangling.  Basically it augments various nodes in the AST
+with information about where is a name defined, how many times is a name
+referenced, if it is a global or not, if a function is using `eval` or the
+`with` statement etc.  I will discuss this some place else, for now what's
+important to know is that you need to call the following before doing
+anything with the tree:
+```javascript
+toplevel.figure_out_scope()
+```
+
+#### Compression
+
+Like this:
+```javascript
+var compressor = UglifyJS.Compressor(options);
+var compressed_ast = compressor.compress(toplevel);
+```
+
+The `options` can be missing.  Available options are discussed above in
+“Compressor options”.  Defaults should lead to best compression in most
+scripts.
+
+The compressor is destructive, so don't rely that `toplevel` remains the
+original tree.
+
+#### Mangling
+
+After compression it is a good idea to call again `figure_out_scope` (since
+the compressor might drop unused variables / unreachable code and this might
+change the number of identifiers or their position).  Optionally, you can
+call a trick that helps after Gzip (counting character frequency in
+non-mangleable words).  Example:
+```javascript
+compressed_ast.figure_out_scope();
+compressed_ast.compute_char_frequency();
+compressed_ast.mangle_names();
+```
+
+#### Generating output
+
+AST nodes have a `print` method that takes an output stream.  Essentially,
+to generate code you do this:
+```javascript
+var stream = UglifyJS.OutputStream(options);
+compressed_ast.print(stream);
+var code = stream.toString(); // this is your minified code
+```
+
+or, for a shortcut you can do:
+```javascript
+var code = compressed_ast.print_to_string(options);
+```
+
+As usual, `options` is optional.  The output stream accepts a lot of options,
+most of them documented above in section “Beautifier options”.  The two
+which we care about here are `source_map` and `comments`.
+
+#### Keeping comments in the output
+
+In order to keep certain comments in the output you need to pass the
+`comments` option.  Pass a RegExp (as string starting and closing with `/`
+or pass a RegExp object), a boolean or a function.  Stringified options
+`all` and `some` can be passed too, where `some` behaves like it's cli
+equivalent `--comments` without passing a value. If you pass a RegExp,
+only those comments whose body matches the RegExp will be kept.  Note that body
+means without the initial `//` or `/*`.  If you pass a function, it will be
+called for every comment in the tree and will receive two arguments: the
+node that the comment is attached to, and the comment token itself.
+
+The comment token has these properties:
+
+- `type`: "comment1" for single-line comments or "comment2" for multi-line
+  comments
+- `value`: the comment body
+- `pos` and `endpos`: the start/end positions (zero-based indexes) in the
+  original code where this comment appears
+- `line` and `col`: the line and column where this comment appears in the
+  original code
+- `file` — the file name of the original file
+- `nlb` — true if there was a newline before this comment in the original
+  code, or if this comment contains a newline.
+
+Your function should return `true` to keep the comment, or a falsy value
+otherwise.
+
+#### Generating a source mapping
+
+You need to pass the `source_map` argument when calling `print`.  It needs
+to be a `SourceMap` object (which is a thin wrapper on top of the
+[source-map][source-map] library).
+
+Example:
+```javascript
+var source_map = UglifyJS.SourceMap(source_map_options);
+var stream = UglifyJS.OutputStream({
+	...
+	source_map: source_map
+});
+compressed_ast.print(stream);
+
+var code = stream.toString();
+var map = source_map.toString(); // json output for your source map
+```
+
+The `source_map_options` (optional) can contain the following properties:
+
+- `file`: the name of the JavaScript output file that this mapping refers to
+- `root`: the `sourceRoot` property (see the [spec][sm-spec])
+- `orig`: the "original source map", handy when you compress generated JS
+  and want to map the minified output back to the original code where it
+  came from.  It can be simply a string in JSON, or a JSON object containing
+  the original source map.
+
+  [acorn]: https://github.com/ternjs/acorn
+  [source-map]: https://github.com/mozilla/source-map
+  [sm-spec]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit
+  [codegen]: http://lisperator.net/uglifyjs/codegen
+  [compressor]: http://lisperator.net/uglifyjs/compress
+  [parser]: http://lisperator.net/uglifyjs/parser
+
+#### Harmony
+
+If you wish to use the experimental [harmony](https://github.com/mishoo/UglifyJS2/commits/harmony)
+branch to minify ES2015+ (ES6+) code please use the following in your `package.json` file:
+
+```
+"uglify-js": "git+https://github.com/mishoo/UglifyJS2.git#harmony"
+```
+
+or to directly install the experimental harmony version of uglify:
+
+```
+npm install --save-dev uglify-js@github:mishoo/UglifyJS2#harmony
+```
+
+See [#448](https://github.com/mishoo/UglifyJS2/issues/448) for additional details.
diff --git a/node_modules/uglify-js/bin/extract-props.js b/node_modules/uglify-js/bin/extract-props.js
new file mode 100644
index 000000000..a5b61458c
--- /dev/null
+++ b/node_modules/uglify-js/bin/extract-props.js
@@ -0,0 +1,77 @@
+#! /usr/bin/env node
+
+"use strict";
+
+var U2 = require("../tools/node");
+var fs = require("fs");
+var yargs = require("yargs");
+var ARGS = yargs
+    .describe("o", "Output file")
+    .argv;
+var files = ARGS._.slice();
+var output = {
+    vars: {},
+    props: {}
+};
+
+if (ARGS.o) try {
+    output = JSON.parse(fs.readFileSync(ARGS.o, "utf8"));
+} catch(ex) {}
+
+files.forEach(getProps);
+
+if (ARGS.o) {
+    fs.writeFileSync(ARGS.o, JSON.stringify(output, null, 2), "utf8");
+} else {
+    console.log("%s", JSON.stringify(output, null, 2));
+}
+
+function getProps(filename) {
+    var code = fs.readFileSync(filename, "utf8");
+    var ast = U2.parse(code);
+
+    ast.walk(new U2.TreeWalker(function(node){
+        if (node instanceof U2.AST_ObjectKeyVal) {
+            add(node.key);
+        }
+        else if (node instanceof U2.AST_ObjectProperty) {
+            add(node.key.name);
+        }
+        else if (node instanceof U2.AST_Dot) {
+            add(node.property);
+        }
+        else if (node instanceof U2.AST_Sub) {
+            addStrings(node.property);
+        }
+    }));
+
+    function addStrings(node) {
+        var out = {};
+        try {
+            (function walk(node){
+                node.walk(new U2.TreeWalker(function(node){
+                    if (node instanceof U2.AST_Seq) {
+                        walk(node.cdr);
+                        return true;
+                    }
+                    if (node instanceof U2.AST_String) {
+                        add(node.value);
+                        return true;
+                    }
+                    if (node instanceof U2.AST_Conditional) {
+                        walk(node.consequent);
+                        walk(node.alternative);
+                        return true;
+                    }
+                    throw out;
+                }));
+            })(node);
+        } catch(ex) {
+            if (ex !== out) throw ex;
+        }
+    }
+
+    function add(name) {
+        output.props[name] = true;
+    }
+}
diff --git a/node_modules/uglify-js/bin/uglifyjs b/node_modules/uglify-js/bin/uglifyjs
new file mode 100755
index 000000000..635ca3651
--- /dev/null
+++ b/node_modules/uglify-js/bin/uglifyjs
@@ -0,0 +1,635 @@
+#! /usr/bin/env node
+// -*- js -*-
+
+"use strict";
+
+var UglifyJS = require("../tools/node");
+var sys = require("util");
+var yargs = require("yargs");
+var fs = require("fs");
+var path = require("path");
+var acorn;
+var screw_ie8 = true;
+var ARGS = yargs
+    .usage("$0 input1.js [input2.js ...] [options]\n\
+Use a single dash to read input from the standard input.\
+\n\n\
+NOTE: by default there is no mangling/compression.\n\
+Without [options] it will simply parse input files and dump the AST\n\
+with whitespace and comments discarded.  To achieve compression and\n\
+mangling you need to use `-c` and `-m`.\
+")
+    .describe("source-map", "Specify an output file where to generate source map.")
+    .describe("source-map-root", "The path to the original source to be included in the source map.")
+    .describe("source-map-url", "The path to the source map to be added in //# sourceMappingURL.  Defaults to the value passed with --source-map.")
+    .describe("source-map-inline", "Write base64-encoded source map to the end of js output.  Disabled by default")
+    .describe("source-map-include-sources", "Pass this flag if you want to include the content of source files in the source map as sourcesContent property.")
+    .describe("in-source-map", "Input source map, useful if you're compressing JS that was generated from some other original code.")
+    .describe("screw-ie8", "Do not support Internet Explorer 6/7/8. This flag is enabled by default.")
+    .describe("support-ie8", "Support non-standard Internet Explorer 6/7/8 javascript.")
+    .describe("expr", "Parse a single expression, rather than a program (for parsing JSON)")
+    .describe("p", "Skip prefix for original filenames that appear in source maps. \
+For example -p 3 will drop 3 directories from file names and ensure they are relative paths. \
+You can also specify -p relative, which will make UglifyJS figure out itself the relative paths between original sources, \
+the source map and the output file.")
+    .describe("o", "Output file (default STDOUT).")
+    .describe("b", "Beautify output/specify output options.")
+    .describe("m", "Mangle names/pass mangler options.")
+    .describe("r", "Reserved names to exclude from mangling.")
+    .describe("c", "Enable compressor/pass compressor options. \
+Pass options like -c hoist_vars=false,if_return=false. \
+Use -c with no argument to use the default compression options.")
+    .describe("d", "Global definitions")
+    .describe("e", "Embed everything in a big function, with a configurable parameter/argument list.")
+
+    .describe("comments", "Preserve copyright comments in the output. \
+By default this works like Google Closure, keeping JSDoc-style comments that contain \"@license\" or \"@preserve\". \
+You can optionally pass one of the following arguments to this flag:\n\
+- \"all\" to keep all comments\n\
+- a valid JS RegExp like `/foo/`or `/^!/` to keep only matching comments.\n\
+\
+Note that currently not *all* comments can be kept when compression is on, \
+because of dead code removal or cascading statements into sequences.")
+
+    .describe("preamble", "Preamble to prepend to the output.  You can use this to insert a \
+comment, for example for licensing information.  This will not be \
+parsed, but the source map will adjust for its presence.")
+
+    .describe("stats", "Display operations run time on STDERR.")
+    .describe("acorn", "Use Acorn for parsing.")
+    .describe("spidermonkey", "Assume input files are SpiderMonkey AST format (as JSON).")
+    .describe("self", "Build itself (UglifyJS2) as a library (implies --wrap=UglifyJS --export-all)")
+    .describe("wrap", "Embed everything in a big function, making the “exports” and “global” variables available. \
+You need to pass an argument to this option to specify the name that your module will take when included in, say, a browser.")
+    .describe("export-all", "Only used when --wrap, this tells UglifyJS to add code to automatically export all globals.")
+    .describe("lint", "Display some scope warnings")
+    .describe("v", "Verbose")
+    .describe("V", "Print version number and exit.")
+    .describe("noerr", "Don't throw an error for unknown options in -c, -b or -m.")
+    .describe("bare-returns", "Allow return outside of functions.  Useful when minifying CommonJS modules.")
+    .describe("keep-fnames", "Do not mangle/drop function names.  Useful for code relying on Function.prototype.name.")
+    .describe("quotes", "Quote style (0 - auto, 1 - single, 2 - double, 3 - original)")
+    .describe("reserved-file", "File containing reserved names")
+    .describe("reserve-domprops", "Make (most?) DOM properties reserved for --mangle-props")
+    .describe("mangle-props", "Mangle property names (0 - disabled, 1 - mangle all properties, 2 - mangle unquoted properies)")
+    .describe("mangle-regex", "Only mangle property names matching the regex")
+    .describe("name-cache", "File to hold mangled names mappings")
+    .describe("pure-funcs", "List of functions that can be safely removed if their return value is not used")
+    .describe("dump-spidermonkey-ast", "Dump SpiderMonkey AST to stdout.")
+    .describe("wrap-iife", "Wrap IIFEs in parenthesis. Note: this disables the negate_iife compression option")
+
+    .alias("p", "prefix")
+    .alias("o", "output")
+    .alias("v", "verbose")
+    .alias("b", "beautify")
+    .alias("m", "mangle")
+    .alias("c", "compress")
+    .alias("d", "define")
+    .alias("r", "reserved")
+    .alias("V", "version")
+    .alias("e", "enclose")
+    .alias("q", "quotes")
+
+    .string("source-map")
+    .string("source-map-root")
+    .string("source-map-url")
+    .string("b")
+    .string("beautify")
+    .string("m")
+    .string("mangle")
+    .string("mangle-props-debug")
+    .string("c")
+    .string("compress")
+    .string("d")
+    .string("define")
+    .string("e")
+    .string("enclose")
+    .string("comments")
+    .string("wrap")
+    .string("p")
+    .string("prefix")
+    .string("name-cache")
+
+    .array("reserved-file")
+    .array("pure-funcs")
+
+    .boolean("expr")
+    .boolean("source-map-inline")
+    .boolean("source-map-include-sources")
+    .boolean("screw-ie8")
+    .boolean("support-ie8")
+    .boolean("export-all")
+    .boolean("self")
+    .boolean("v")
+    .boolean("verbose")
+    .boolean("stats")
+    .boolean("acorn")
+    .boolean("spidermonkey")
+    .boolean("dump-spidermonkey-ast")
+    .boolean("lint")
+    .boolean("V")
+    .boolean("version")
+    .boolean("noerr")
+    .boolean("bare-returns")
+    .boolean("keep-fnames")
+    .boolean("reserve-domprops")
+    .boolean("wrap-iife")
+
+    .wrap(80)
+
+    .argv
+;
+
+normalize(ARGS);
+
+if (ARGS.noerr) {
+    UglifyJS.DefaultsError.croak = function(msg, defs) {
+        print_error("WARN: " + msg);
+    };
+}
+
+if (ARGS.version || ARGS.V) {
+    var json = require("../package.json");
+    print(json.name + ' ' + json.version);
+    process.exit(0);
+}
+
+if (ARGS.ast_help) {
+    var desc = UglifyJS.describe_ast();
+    print(typeof desc == "string" ? desc : JSON.stringify(desc, null, 2));
+    process.exit(0);
+}
+
+if (ARGS.h || ARGS.help) {
+    print(yargs.help());
+    process.exit(0);
+}
+
+if (ARGS.acorn) {
+    acorn = require("acorn");
+}
+
+var COMPRESS = getOptions("c", true);
+var MANGLE = getOptions("m", true);
+var BEAUTIFY = getOptions("b", true);
+var RESERVED = null;
+
+if (ARGS.reserved_file) ARGS.reserved_file.forEach(function(filename){
+    RESERVED = UglifyJS.readReservedFile(filename, RESERVED);
+});
+
+if (ARGS.reserve_domprops) {
+    RESERVED = UglifyJS.readDefaultReservedFile(RESERVED);
+}
+
+if (ARGS.d) {
+    if (COMPRESS) COMPRESS.global_defs = getOptions("d");
+}
+
+if (ARGS.pure_funcs) {
+    if (COMPRESS) COMPRESS.pure_funcs = ARGS.pure_funcs;
+}
+
+if (ARGS.r) {
+    if (MANGLE) MANGLE.except = ARGS.r.replace(/^\s+|\s+$/g).split(/\s*,+\s*/);
+}
+
+if (RESERVED && MANGLE) {
+    if (!MANGLE.except) MANGLE.except = RESERVED.vars;
+    else MANGLE.except = MANGLE.except.concat(RESERVED.vars);
+}
+
+function readNameCache(key) {
+    return UglifyJS.readNameCache(ARGS.name_cache, key);
+}
+
+function writeNameCache(key, cache) {
+    return UglifyJS.writeNameCache(ARGS.name_cache, key, cache);
+}
+
+function extractRegex(str) {
+  if (/^\/.*\/[a-zA-Z]*$/.test(str)) {
+    var regex_pos = str.lastIndexOf("/");
+    return new RegExp(str.substr(1, regex_pos - 1), str.substr(regex_pos + 1));
+  } else {
+    throw new Error("Invalid regular expression: " + str);
+  }
+}
+
+if (ARGS.quotes === true) {
+    ARGS.quotes = 3;
+}
+
+if (ARGS.mangle_props === true) {
+    ARGS.mangle_props = 1;
+} else if (ARGS.mangle_props === "unquoted") {
+    ARGS.mangle_props = 2;
+}
+
+var OUTPUT_OPTIONS = {
+    beautify     : BEAUTIFY ? true : false,
+    max_line_len : 32000,
+    preamble     : ARGS.preamble || null,
+    quote_style  : ARGS.quotes != null ? ARGS.quotes : 0,
+};
+
+if (ARGS.mangle_props == 2) {
+    OUTPUT_OPTIONS.keep_quoted_props = true;
+    if (COMPRESS && !("properties" in COMPRESS))
+        COMPRESS.properties = false;
+}
+
+if (ARGS.support_ie8 === true && ARGS.screw_ie8 !== true) {
+    screw_ie8 = false;
+}
+
+if (COMPRESS) COMPRESS.screw_ie8 = screw_ie8;
+if (MANGLE) MANGLE.screw_ie8 = screw_ie8;
+OUTPUT_OPTIONS.screw_ie8 = screw_ie8;
+
+if (ARGS.keep_fnames) {
+    if (COMPRESS) COMPRESS.keep_fnames = true;
+    if (MANGLE) MANGLE.keep_fnames = true;
+}
+
+if (ARGS.wrap_iife) {
+    if (COMPRESS) COMPRESS.negate_iife = false;
+    OUTPUT_OPTIONS.wrap_iife = true;
+}
+
+if (BEAUTIFY)
+    UglifyJS.merge(OUTPUT_OPTIONS, BEAUTIFY);
+
+if (ARGS.comments === "") {
+    OUTPUT_OPTIONS.comments = "some";
+} else {
+    OUTPUT_OPTIONS.comments = ARGS.comments;
+}
+
+var files = ARGS._.slice();
+
+if (process.platform === "win32")
+    files = UglifyJS.simple_glob(files);
+
+if (ARGS.self) {
+    if (files.length > 0) {
+        print_error("WARN: Ignoring input files since --self was passed");
+    }
+    files = UglifyJS.FILES;
+    if (!ARGS.wrap) ARGS.wrap = "UglifyJS";
+}
+
+var ORIG_MAP = ARGS.in_source_map;
+
+if (ORIG_MAP && ORIG_MAP != "inline") {
+    ORIG_MAP = JSON.parse(fs.readFileSync(ORIG_MAP));
+    if (files.length == 0) {
+        print_error("INFO: Using file from the input source map: " + ORIG_MAP.file);
+        files = [ ORIG_MAP.file ];
+    }
+}
+
+if (files.length == 0) {
+    files = [ "-" ];
+}
+
+if (ORIG_MAP == "inline") {
+    if (files.length > 1) {
+        print_error("ERROR: Inline source map only works with singular input");
+        process.exit(1);
+    }
+    if (ARGS.acorn || ARGS.spidermonkey) {
+        print_error("ERROR: Inline source map only works with built-in parser");
+        process.exit(1);
+    }
+}
+
+if (files.indexOf("-") >= 0 && ARGS.source_map) {
+    print_error("ERROR: Source map doesn't work with input from STDIN");
+    process.exit(1);
+}
+
+if (files.filter(function(el){ return el == "-" }).length > 1) {
+    print_error("ERROR: Can read a single file from STDIN (two or more dashes specified)");
+    process.exit(1);
+}
+
+var STATS = {};
+var TOPLEVEL = null;
+var P_RELATIVE = ARGS.p && ARGS.p == "relative";
+var SOURCES_CONTENT = {};
+var index = 0;
+
+!function cb() {
+    if (index == files.length) return done();
+    var file = files[index++];
+    read_whole_file(file, function (err, code) {
+        if (err) {
+            print_error("ERROR: can't read file: " + file);
+            process.exit(1);
+        }
+        if (ORIG_MAP == "inline") {
+            ORIG_MAP = read_source_map(code);
+        }
+        if (ARGS.p != null) {
+            if (P_RELATIVE) {
+                file = path.relative(path.dirname(ARGS.source_map), file).replace(/\\/g, '/');
+            } else {
+                var p = parseInt(ARGS.p, 10);
+                if (!isNaN(p)) {
+                    file = file.replace(/^\/+/, "").split(/\/+/).slice(ARGS.p).join("/");
+                }
+            }
+        }
+        SOURCES_CONTENT[file] = code;
+        time_it("parse", function(){
+            if (ARGS.spidermonkey) {
+                var program = JSON.parse(code);
+                if (!TOPLEVEL) TOPLEVEL = program;
+                else TOPLEVEL.body = TOPLEVEL.body.concat(program.body);
+            }
+            else if (ARGS.acorn) {
+                TOPLEVEL = acorn.parse(code, {
+                    locations     : true,
+                    sourceFile    : file,
+                    program       : TOPLEVEL
+                });
+            }
+            else {
+                try {
+                    TOPLEVEL = UglifyJS.parse(code, {
+                        filename     : file,
+                        toplevel     : TOPLEVEL,
+                        expression   : ARGS.expr,
+                        bare_returns : ARGS.bare_returns,
+                    });
+                } catch(ex) {
+                    if (ex instanceof UglifyJS.JS_Parse_Error) {
+                        print_error("Parse error at " + file + ":" + ex.line + "," + ex.col);
+                        var col = ex.col;
+                        var line = code.split(/\r?\n/)[ex.line - (col ? 1 : 2)];
+                        if (line) {
+                            if (col > 40) {
+                                line = line.slice(col - 40);
+                                col = 40;
+                            }
+                            if (col) {
+                                print_error(line.slice(0, 80));
+                                print_error(line.slice(0, col).replace(/\S/g, " ") + "^");
+                            } else {
+                                print_error(line.slice(-40));
+                                print_error(line.slice(-40).replace(/\S/g, " ") + "^");
+                            }
+                        }
+                        print_error(ex.stack);
+                        process.exit(1);
+                    }
+                    throw ex;
+                }
+            };
+        });
+        cb();
+    });
+}();
+
+function done() {
+    var OUTPUT_FILE = ARGS.o;
+
+    var SOURCE_MAP = (ARGS.source_map || ARGS.source_map_inline) ? UglifyJS.SourceMap({
+        file: P_RELATIVE ? path.relative(path.dirname(ARGS.source_map), OUTPUT_FILE) : OUTPUT_FILE,
+        root: ARGS.source_map_root || ORIG_MAP && ORIG_MAP.sourceRoot,
+        orig: ORIG_MAP,
+    }) : null;
+
+    OUTPUT_OPTIONS.source_map = SOURCE_MAP;
+
+    try {
+        var output = UglifyJS.OutputStream(OUTPUT_OPTIONS);
+        var compressor = COMPRESS && UglifyJS.Compressor(COMPRESS);
+    } catch(ex) {
+        if (ex instanceof UglifyJS.DefaultsError) {
+            print_error(ex.message);
+            print_error("Supported options:");
+            print_error(sys.inspect(ex.defs));
+            process.exit(1);
+        }
+    }
+
+    if (ARGS.acorn || ARGS.spidermonkey) time_it("convert_ast", function(){
+        TOPLEVEL = UglifyJS.AST_Node.from_mozilla_ast(TOPLEVEL);
+    });
+
+    if (ARGS.wrap != null) {
+        TOPLEVEL = TOPLEVEL.wrap_commonjs(ARGS.wrap, ARGS.export_all);
+    }
+
+    if (ARGS.enclose != null) {
+        var arg_parameter_list = ARGS.enclose;
+        if (arg_parameter_list === true) {
+            arg_parameter_list = [];
+        }
+        else if (!(arg_parameter_list instanceof Array)) {
+            arg_parameter_list = [arg_parameter_list];
+        }
+        TOPLEVEL = TOPLEVEL.wrap_enclose(arg_parameter_list);
+    }
+
+    if (ARGS.mangle_props || ARGS.name_cache) (function(){
+        var reserved = RESERVED ? RESERVED.props : null;
+        var cache = readNameCache("props");
+        var regex;
+
+        try {
+          regex = ARGS.mangle_regex ? extractRegex(ARGS.mangle_regex) : null;
+        } catch (e) {
+            print_error("ERROR: Invalid --mangle-regex: " + e.message);
+            process.exit(1);
+        }
+
+        TOPLEVEL = UglifyJS.mangle_properties(TOPLEVEL, {
+            reserved      : reserved,
+            cache         : cache,
+            only_cache    : !ARGS.mangle_props,
+            regex         : regex,
+            ignore_quoted : ARGS.mangle_props == 2,
+            debug         : typeof ARGS.mangle_props_debug === "undefined" ? false : ARGS.mangle_props_debug
+        });
+        writeNameCache("props", cache);
+    })();
+
+    var SCOPE_IS_NEEDED = COMPRESS || MANGLE || ARGS.lint
+    var TL_CACHE = readNameCache("vars");
+    if (MANGLE) MANGLE.cache = TL_CACHE;
+
+    if (SCOPE_IS_NEEDED) {
+        time_it("scope", function(){
+            TOPLEVEL.figure_out_scope(MANGLE || { screw_ie8: screw_ie8, cache: TL_CACHE });
+            if (ARGS.lint) {
+                TOPLEVEL.scope_warnings();
+            }
+        });
+    }
+
+    if (COMPRESS) {
+        time_it("squeeze", function(){
+            TOPLEVEL = compressor.compress(TOPLEVEL);
+        });
+    }
+
+    if (SCOPE_IS_NEEDED) {
+        time_it("scope", function(){
+            TOPLEVEL.figure_out_scope(MANGLE || { screw_ie8: screw_ie8, cache: TL_CACHE });
+            if (MANGLE && !TL_CACHE) {
+                TOPLEVEL.compute_char_frequency(MANGLE);
+            }
+        });
+    }
+
+    if (MANGLE) time_it("mangle", function(){
+        TOPLEVEL.mangle_names(MANGLE);
+    });
+
+    writeNameCache("vars", TL_CACHE);
+
+    if (ARGS.source_map_include_sources) {
+        for (var file in SOURCES_CONTENT) {
+            if (SOURCES_CONTENT.hasOwnProperty(file)) {
+                SOURCE_MAP.get().setSourceContent(file, SOURCES_CONTENT[file]);
+            }
+        }
+    }
+
+    if (ARGS.dump_spidermonkey_ast) {
+        print(JSON.stringify(TOPLEVEL.to_mozilla_ast(), null, 2));
+    } else {
+        time_it("generate", function(){
+            TOPLEVEL.print(output);
+        });
+
+        output = output.get();
+
+        if (SOURCE_MAP) {
+            if (ARGS.source_map_inline) {
+                var base64_string = new Buffer(SOURCE_MAP.toString()).toString('base64');
+                output += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + base64_string;
+            } else {
+                fs.writeFileSync(ARGS.source_map, SOURCE_MAP, "utf8");
+                var source_map_url = ARGS.source_map_url || (
+                    P_RELATIVE
+                        ? path.relative(path.dirname(OUTPUT_FILE), ARGS.source_map)
+                        : ARGS.source_map
+                );
+                output += "\n//# sourceMappingURL=" + source_map_url;
+            }
+        }
+
+        if (OUTPUT_FILE) {
+            fs.writeFileSync(OUTPUT_FILE, output, "utf8");
+        } else {
+            print(output);
+        }
+    }
+
+    if (ARGS.stats) {
+        print_error(UglifyJS.string_template("Timing information (compressed {count} files):", {
+            count: files.length
+        }));
+        for (var i in STATS) if (STATS.hasOwnProperty(i)) {
+            print_error(UglifyJS.string_template("- {name}: {time}s", {
+                name: i,
+                time: (STATS[i] / 1000).toFixed(3)
+            }));
+        }
+    }
+}
+
+/* -----[ functions ]----- */
+
+function normalize(o) {
+    for (var i in o) if (o.hasOwnProperty(i) && /-/.test(i)) {
+        o[i.replace(/-/g, "_")] = o[i];
+        delete o[i];
+    }
+}
+
+function getOptions(flag, constants) {
+    var x = ARGS[flag];
+    if (x == null || x === false) return null;
+    var ret = {};
+    if (x !== "") {
+        if (Array.isArray(x)) x = x.map(function (v) { return "(" + v + ")"; }).join(", ");
+
+        var ast;
+        try {
+            ast = UglifyJS.parse(x, { cli: true, expression: true });
+        } catch(ex) {
+            if (ex instanceof UglifyJS.JS_Parse_Error) {
+                print_error("Error parsing arguments for flag `" + flag + "': " + x);
+                process.exit(1);
+            }
+        }
+        ast.walk(new UglifyJS.TreeWalker(function(node){
+            if (node instanceof UglifyJS.AST_Seq) return; // descend
+            if (node instanceof UglifyJS.AST_Assign) {
+                var name = node.left.print_to_string().replace(/-/g, "_");
+                var value = node.right;
+                if (constants)
+                    value = new Function("return (" + value.print_to_string() + ")")();
+                ret[name] = value;
+                return true;    // no descend
+            }
+            if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_Binary) {
+                var name = node.print_to_string().replace(/-/g, "_");
+                ret[name] = true;
+                return true;    // no descend
+            }
+            print_error(node.TYPE)
+            print_error("Error parsing arguments for flag `" + flag + "': " + x);
+            process.exit(1);
+        }));
+    }
+    return ret;
+}
+
+function read_whole_file(filename, cb) {
+    if (filename == "-") {
+        var chunks = [];
+        process.stdin.setEncoding('utf-8');
+        process.stdin.on('data', function (chunk) {
+            chunks.push(chunk);
+        }).on('end', function () {
+            cb(null, chunks.join(""));
+        });
+        process.openStdin();
+    } else {
+        fs.readFile(filename, "utf-8", cb);
+    }
+}
+
+function read_source_map(code) {
+    var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);
+    if (!match) {
+        print_error("WARN: inline source map not found");
+        return null;
+    }
+    return JSON.parse(new Buffer(match[2], "base64"));
+}
+
+function time_it(name, cont) {
+    var t1 = new Date().getTime();
+    var ret = cont();
+    if (ARGS.stats) {
+        var spent = new Date().getTime() - t1;
+        if (STATS[name]) STATS[name] += spent;
+        else STATS[name] = spent;
+    }
+    return ret;
+}
+
+function print_error(msg) {
+    console.error("%s", msg);
+}
+
+function print(txt) {
+    console.log("%s", txt);
+}
diff --git a/node_modules/uglify-js/lib/ast.js b/node_modules/uglify-js/lib/ast.js
new file mode 100644
index 000000000..ba1330f40
--- /dev/null
+++ b/node_modules/uglify-js/lib/ast.js
@@ -0,0 +1,1051 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+function DEFNODE(type, props, methods, base) {
+    if (arguments.length < 4) base = AST_Node;
+    if (!props) props = [];
+    else props = props.split(/\s+/);
+    var self_props = props;
+    if (base && base.PROPS)
+        props = props.concat(base.PROPS);
+    var code = "return function AST_" + type + "(props){ if (props) { ";
+    for (var i = props.length; --i >= 0;) {
+        code += "this." + props[i] + " = props." + props[i] + ";";
+    }
+    var proto = base && new base;
+    if (proto && proto.initialize || (methods && methods.initialize))
+        code += "this.initialize();";
+    code += "}}";
+    var ctor = new Function(code)();
+    if (proto) {
+        ctor.prototype = proto;
+        ctor.BASE = base;
+    }
+    if (base) base.SUBCLASSES.push(ctor);
+    ctor.prototype.CTOR = ctor;
+    ctor.PROPS = props || null;
+    ctor.SELF_PROPS = self_props;
+    ctor.SUBCLASSES = [];
+    if (type) {
+        ctor.prototype.TYPE = ctor.TYPE = type;
+    }
+    if (methods) for (i in methods) if (HOP(methods, i)) {
+        if (/^\$/.test(i)) {
+            ctor[i.substr(1)] = methods[i];
+        } else {
+            ctor.prototype[i] = methods[i];
+        }
+    }
+    ctor.DEFMETHOD = function(name, method) {
+        this.prototype[name] = method;
+    };
+    if (typeof exports !== "undefined") {
+        exports["AST_" + type] = ctor;
+    }
+    return ctor;
+};
+
+var AST_Token = DEFNODE("Token", "type value line col pos endline endcol endpos nlb comments_before file raw", {
+}, null);
+
+var AST_Node = DEFNODE("Node", "start end", {
+    _clone: function(deep) {
+        if (deep) {
+            var self = this.clone();
+            return self.transform(new TreeTransformer(function(node) {
+                if (node !== self) {
+                    return node.clone(true);
+                }
+            }));
+        }
+        return new this.CTOR(this);
+    },
+    clone: function(deep) {
+        return this._clone(deep);
+    },
+    $documentation: "Base class of all AST nodes",
+    $propdoc: {
+        start: "[AST_Token] The first token of this node",
+        end: "[AST_Token] The last token of this node"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this);
+    },
+    walk: function(visitor) {
+        return this._walk(visitor); // not sure the indirection will be any help
+    }
+}, null);
+
+AST_Node.warn_function = null;
+AST_Node.warn = function(txt, props) {
+    if (AST_Node.warn_function)
+        AST_Node.warn_function(string_template(txt, props));
+};
+
+/* -----[ statements ]----- */
+
+var AST_Statement = DEFNODE("Statement", null, {
+    $documentation: "Base class of all statements",
+});
+
+var AST_Debugger = DEFNODE("Debugger", null, {
+    $documentation: "Represents a debugger statement",
+}, AST_Statement);
+
+var AST_Directive = DEFNODE("Directive", "value scope quote", {
+    $documentation: "Represents a directive, like \"use strict\";",
+    $propdoc: {
+        value: "[string] The value of this directive as a plain string (it's not an AST_String!)",
+        scope: "[AST_Scope/S] The scope that this directive affects",
+        quote: "[string] the original quote character"
+    },
+}, AST_Statement);
+
+var AST_SimpleStatement = DEFNODE("SimpleStatement", "body", {
+    $documentation: "A statement consisting of an expression, i.e. a = 1 + 2",
+    $propdoc: {
+        body: "[AST_Node] an expression node (should not be instanceof AST_Statement)"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.body._walk(visitor);
+        });
+    }
+}, AST_Statement);
+
+function walk_body(node, visitor) {
+    var body = node.body;
+    if (body instanceof AST_Statement) {
+        body._walk(visitor);
+    }
+    else for (var i = 0, len = body.length; i < len; i++) {
+        body[i]._walk(visitor);
+    }
+};
+
+var AST_Block = DEFNODE("Block", "body", {
+    $documentation: "A body of statements (usually bracketed)",
+    $propdoc: {
+        body: "[AST_Statement*] an array of statements"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            walk_body(this, visitor);
+        });
+    }
+}, AST_Statement);
+
+var AST_BlockStatement = DEFNODE("BlockStatement", null, {
+    $documentation: "A block statement",
+}, AST_Block);
+
+var AST_EmptyStatement = DEFNODE("EmptyStatement", null, {
+    $documentation: "The empty statement (empty block or simply a semicolon)",
+    _walk: function(visitor) {
+        return visitor._visit(this);
+    }
+}, AST_Statement);
+
+var AST_StatementWithBody = DEFNODE("StatementWithBody", "body", {
+    $documentation: "Base class for all statements that contain one nested body: `For`, `ForIn`, `Do`, `While`, `With`",
+    $propdoc: {
+        body: "[AST_Statement] the body; this should always be present, even if it's an AST_EmptyStatement"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.body._walk(visitor);
+        });
+    }
+}, AST_Statement);
+
+var AST_LabeledStatement = DEFNODE("LabeledStatement", "label", {
+    $documentation: "Statement with a label",
+    $propdoc: {
+        label: "[AST_Label] a label definition"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.label._walk(visitor);
+            this.body._walk(visitor);
+        });
+    },
+    clone: function(deep) {
+        var node = this._clone(deep);
+        if (deep) {
+            var refs = node.label.references;
+            var label = this.label;
+            node.walk(new TreeWalker(function(node) {
+                if (node instanceof AST_LoopControl
+                    && node.label && node.label.thedef === label) {
+                    refs.push(node);
+                }
+            }));
+        }
+        return node;
+    }
+}, AST_StatementWithBody);
+
+var AST_IterationStatement = DEFNODE("IterationStatement", null, {
+    $documentation: "Internal class.  All loops inherit from it."
+}, AST_StatementWithBody);
+
+var AST_DWLoop = DEFNODE("DWLoop", "condition", {
+    $documentation: "Base class for do/while statements",
+    $propdoc: {
+        condition: "[AST_Node] the loop condition.  Should not be instanceof AST_Statement"
+    }
+}, AST_IterationStatement);
+
+var AST_Do = DEFNODE("Do", null, {
+    $documentation: "A `do` statement",
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.body._walk(visitor);
+            this.condition._walk(visitor);
+        });
+    }
+}, AST_DWLoop);
+
+var AST_While = DEFNODE("While", null, {
+    $documentation: "A `while` statement",
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.condition._walk(visitor);
+            this.body._walk(visitor);
+        });
+    }
+}, AST_DWLoop);
+
+var AST_For = DEFNODE("For", "init condition step", {
+    $documentation: "A `for` statement",
+    $propdoc: {
+        init: "[AST_Node?] the `for` initialization code, or null if empty",
+        condition: "[AST_Node?] the `for` termination clause, or null if empty",
+        step: "[AST_Node?] the `for` update clause, or null if empty"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            if (this.init) this.init._walk(visitor);
+            if (this.condition) this.condition._walk(visitor);
+            if (this.step) this.step._walk(visitor);
+            this.body._walk(visitor);
+        });
+    }
+}, AST_IterationStatement);
+
+var AST_ForIn = DEFNODE("ForIn", "init name object", {
+    $documentation: "A `for ... in` statement",
+    $propdoc: {
+        init: "[AST_Node] the `for/in` initialization code",
+        name: "[AST_SymbolRef?] the loop variable, only if `init` is AST_Var",
+        object: "[AST_Node] the object that we're looping through"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.init._walk(visitor);
+            this.object._walk(visitor);
+            this.body._walk(visitor);
+        });
+    }
+}, AST_IterationStatement);
+
+var AST_With = DEFNODE("With", "expression", {
+    $documentation: "A `with` statement",
+    $propdoc: {
+        expression: "[AST_Node] the `with` expression"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.expression._walk(visitor);
+            this.body._walk(visitor);
+        });
+    }
+}, AST_StatementWithBody);
+
+/* -----[ scope and functions ]----- */
+
+var AST_Scope = DEFNODE("Scope", "directives variables functions uses_with uses_eval parent_scope enclosed cname", {
+    $documentation: "Base class for all statements introducing a lexical scope",
+    $propdoc: {
+        directives: "[string*/S] an array of directives declared in this scope",
+        variables: "[Object/S] a map of name -> SymbolDef for all variables/functions defined in this scope",
+        functions: "[Object/S] like `variables`, but only lists function declarations",
+        uses_with: "[boolean/S] tells whether this scope uses the `with` statement",
+        uses_eval: "[boolean/S] tells whether this scope contains a direct call to the global `eval`",
+        parent_scope: "[AST_Scope?/S] link to the parent scope",
+        enclosed: "[SymbolDef*/S] a list of all symbol definitions that are accessed from this scope or any subscopes",
+        cname: "[integer/S] current index for mangling variables (used internally by the mangler)",
+    },
+}, AST_Block);
+
+var AST_Toplevel = DEFNODE("Toplevel", "globals", {
+    $documentation: "The toplevel scope",
+    $propdoc: {
+        globals: "[Object/S] a map of name -> SymbolDef for all undeclared names",
+    },
+    wrap_enclose: function(arg_parameter_pairs) {
+        var self = this;
+        var args = [];
+        var parameters = [];
+
+        arg_parameter_pairs.forEach(function(pair) {
+            var splitAt = pair.lastIndexOf(":");
+
+            args.push(pair.substr(0, splitAt));
+            parameters.push(pair.substr(splitAt + 1));
+        });
+
+        var wrapped_tl = "(function(" + parameters.join(",") + "){ '$ORIG'; })(" + args.join(",") + ")";
+        wrapped_tl = parse(wrapped_tl);
+        wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node){
+            if (node instanceof AST_Directive && node.value == "$ORIG") {
+                return MAP.splice(self.body);
+            }
+        }));
+        return wrapped_tl;
+    },
+    wrap_commonjs: function(name, export_all) {
+        var self = this;
+        var to_export = [];
+        if (export_all) {
+            self.figure_out_scope();
+            self.walk(new TreeWalker(function(node){
+                if (node instanceof AST_SymbolDeclaration && node.definition().global) {
+                    if (!find_if(function(n){ return n.name == node.name }, to_export))
+                        to_export.push(node);
+                }
+            }));
+        }
+        var wrapped_tl = "(function(exports, global){ '$ORIG'; '$EXPORTS'; global['" + name + "'] = exports; }({}, (function(){return this}())))";
+        wrapped_tl = parse(wrapped_tl);
+        wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node){
+            if (node instanceof AST_Directive) {
+                switch (node.value) {
+                  case "$ORIG":
+                    return MAP.splice(self.body);
+                  case "$EXPORTS":
+                    var body = [];
+                    to_export.forEach(function(sym){
+                        body.push(new AST_SimpleStatement({
+                            body: new AST_Assign({
+                                left: new AST_Sub({
+                                    expression: new AST_SymbolRef({ name: "exports" }),
+                                    property: new AST_String({ value: sym.name }),
+                                }),
+                                operator: "=",
+                                right: new AST_SymbolRef(sym),
+                            }),
+                        }));
+                    });
+                    return MAP.splice(body);
+                }
+            }
+        }));
+        return wrapped_tl;
+    }
+}, AST_Scope);
+
+var AST_Lambda = DEFNODE("Lambda", "name argnames uses_arguments", {
+    $documentation: "Base class for functions",
+    $propdoc: {
+        name: "[AST_SymbolDeclaration?] the name of this function",
+        argnames: "[AST_SymbolFunarg*] array of function arguments",
+        uses_arguments: "[boolean/S] tells whether this function accesses the arguments array"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            if (this.name) this.name._walk(visitor);
+            var argnames = this.argnames;
+            for (var i = 0, len = argnames.length; i < len; i++) {
+                argnames[i]._walk(visitor);
+            }
+            walk_body(this, visitor);
+        });
+    }
+}, AST_Scope);
+
+var AST_Accessor = DEFNODE("Accessor", null, {
+    $documentation: "A setter/getter function.  The `name` property is always null."
+}, AST_Lambda);
+
+var AST_Function = DEFNODE("Function", null, {
+    $documentation: "A function expression"
+}, AST_Lambda);
+
+var AST_Defun = DEFNODE("Defun", null, {
+    $documentation: "A function definition"
+}, AST_Lambda);
+
+/* -----[ JUMPS ]----- */
+
+var AST_Jump = DEFNODE("Jump", null, {
+    $documentation: "Base class for “jumps” (for now that's `return`, `throw`, `break` and `continue`)"
+}, AST_Statement);
+
+var AST_Exit = DEFNODE("Exit", "value", {
+    $documentation: "Base class for “exits” (`return` and `throw`)",
+    $propdoc: {
+        value: "[AST_Node?] the value returned or thrown by this statement; could be null for AST_Return"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, this.value && function(){
+            this.value._walk(visitor);
+        });
+    }
+}, AST_Jump);
+
+var AST_Return = DEFNODE("Return", null, {
+    $documentation: "A `return` statement"
+}, AST_Exit);
+
+var AST_Throw = DEFNODE("Throw", null, {
+    $documentation: "A `throw` statement"
+}, AST_Exit);
+
+var AST_LoopControl = DEFNODE("LoopControl", "label", {
+    $documentation: "Base class for loop control statements (`break` and `continue`)",
+    $propdoc: {
+        label: "[AST_LabelRef?] the label, or null if none",
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, this.label && function(){
+            this.label._walk(visitor);
+        });
+    }
+}, AST_Jump);
+
+var AST_Break = DEFNODE("Break", null, {
+    $documentation: "A `break` statement"
+}, AST_LoopControl);
+
+var AST_Continue = DEFNODE("Continue", null, {
+    $documentation: "A `continue` statement"
+}, AST_LoopControl);
+
+/* -----[ IF ]----- */
+
+var AST_If = DEFNODE("If", "condition alternative", {
+    $documentation: "A `if` statement",
+    $propdoc: {
+        condition: "[AST_Node] the `if` condition",
+        alternative: "[AST_Statement?] the `else` part, or null if not present"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.condition._walk(visitor);
+            this.body._walk(visitor);
+            if (this.alternative) this.alternative._walk(visitor);
+        });
+    }
+}, AST_StatementWithBody);
+
+/* -----[ SWITCH ]----- */
+
+var AST_Switch = DEFNODE("Switch", "expression", {
+    $documentation: "A `switch` statement",
+    $propdoc: {
+        expression: "[AST_Node] the `switch` “discriminant”"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.expression._walk(visitor);
+            walk_body(this, visitor);
+        });
+    }
+}, AST_Block);
+
+var AST_SwitchBranch = DEFNODE("SwitchBranch", null, {
+    $documentation: "Base class for `switch` branches",
+}, AST_Block);
+
+var AST_Default = DEFNODE("Default", null, {
+    $documentation: "A `default` switch branch",
+}, AST_SwitchBranch);
+
+var AST_Case = DEFNODE("Case", "expression", {
+    $documentation: "A `case` switch branch",
+    $propdoc: {
+        expression: "[AST_Node] the `case` expression"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.expression._walk(visitor);
+            walk_body(this, visitor);
+        });
+    }
+}, AST_SwitchBranch);
+
+/* -----[ EXCEPTIONS ]----- */
+
+var AST_Try = DEFNODE("Try", "bcatch bfinally", {
+    $documentation: "A `try` statement",
+    $propdoc: {
+        bcatch: "[AST_Catch?] the catch block, or null if not present",
+        bfinally: "[AST_Finally?] the finally block, or null if not present"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            walk_body(this, visitor);
+            if (this.bcatch) this.bcatch._walk(visitor);
+            if (this.bfinally) this.bfinally._walk(visitor);
+        });
+    }
+}, AST_Block);
+
+var AST_Catch = DEFNODE("Catch", "argname", {
+    $documentation: "A `catch` node; only makes sense as part of a `try` statement",
+    $propdoc: {
+        argname: "[AST_SymbolCatch] symbol for the exception"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.argname._walk(visitor);
+            walk_body(this, visitor);
+        });
+    }
+}, AST_Block);
+
+var AST_Finally = DEFNODE("Finally", null, {
+    $documentation: "A `finally` node; only makes sense as part of a `try` statement"
+}, AST_Block);
+
+/* -----[ VAR/CONST ]----- */
+
+var AST_Definitions = DEFNODE("Definitions", "definitions", {
+    $documentation: "Base class for `var` or `const` nodes (variable declarations/initializations)",
+    $propdoc: {
+        definitions: "[AST_VarDef*] array of variable definitions"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            var definitions = this.definitions;
+            for (var i = 0, len = definitions.length; i < len; i++) {
+                definitions[i]._walk(visitor);
+            }
+        });
+    }
+}, AST_Statement);
+
+var AST_Var = DEFNODE("Var", null, {
+    $documentation: "A `var` statement"
+}, AST_Definitions);
+
+var AST_Const = DEFNODE("Const", null, {
+    $documentation: "A `const` statement"
+}, AST_Definitions);
+
+var AST_VarDef = DEFNODE("VarDef", "name value", {
+    $documentation: "A variable declaration; only appears in a AST_Definitions node",
+    $propdoc: {
+        name: "[AST_SymbolVar|AST_SymbolConst] name of the variable",
+        value: "[AST_Node?] initializer, or null of there's no initializer"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.name._walk(visitor);
+            if (this.value) this.value._walk(visitor);
+        });
+    }
+});
+
+/* -----[ OTHER ]----- */
+
+var AST_Call = DEFNODE("Call", "expression args", {
+    $documentation: "A function call expression",
+    $propdoc: {
+        expression: "[AST_Node] expression to invoke as function",
+        args: "[AST_Node*] array of arguments"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.expression._walk(visitor);
+            var args = this.args;
+            for (var i = 0, len = args.length; i < len; i++) {
+                args[i]._walk(visitor);
+            }
+        });
+    }
+});
+
+var AST_New = DEFNODE("New", null, {
+    $documentation: "An object instantiation.  Derives from a function call since it has exactly the same properties"
+}, AST_Call);
+
+var AST_Seq = DEFNODE("Seq", "car cdr", {
+    $documentation: "A sequence expression (two comma-separated expressions)",
+    $propdoc: {
+        car: "[AST_Node] first element in sequence",
+        cdr: "[AST_Node] second element in sequence"
+    },
+    $cons: function(x, y) {
+        var seq = new AST_Seq(x);
+        seq.car = x;
+        seq.cdr = y;
+        return seq;
+    },
+    $from_array: function(array) {
+        if (array.length == 0) return null;
+        if (array.length == 1) return array[0].clone();
+        var list = null;
+        for (var i = array.length; --i >= 0;) {
+            list = AST_Seq.cons(array[i], list);
+        }
+        var p = list;
+        while (p) {
+            if (p.cdr && !p.cdr.cdr) {
+                p.cdr = p.cdr.car;
+                break;
+            }
+            p = p.cdr;
+        }
+        return list;
+    },
+    to_array: function() {
+        var p = this, a = [];
+        while (p) {
+            a.push(p.car);
+            if (p.cdr && !(p.cdr instanceof AST_Seq)) {
+                a.push(p.cdr);
+                break;
+            }
+            p = p.cdr;
+        }
+        return a;
+    },
+    add: function(node) {
+        var p = this;
+        while (p) {
+            if (!(p.cdr instanceof AST_Seq)) {
+                var cell = AST_Seq.cons(p.cdr, node);
+                return p.cdr = cell;
+            }
+            p = p.cdr;
+        }
+    },
+    len: function() {
+        if (this.cdr instanceof AST_Seq) {
+            return this.cdr.len() + 1;
+        } else {
+            return 2;
+        }
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.car._walk(visitor);
+            if (this.cdr) this.cdr._walk(visitor);
+        });
+    }
+});
+
+var AST_PropAccess = DEFNODE("PropAccess", "expression property", {
+    $documentation: "Base class for property access expressions, i.e. `a.foo` or `a[\"foo\"]`",
+    $propdoc: {
+        expression: "[AST_Node] the “container” expression",
+        property: "[AST_Node|string] the property to access.  For AST_Dot this is always a plain string, while for AST_Sub it's an arbitrary AST_Node"
+    }
+});
+
+var AST_Dot = DEFNODE("Dot", null, {
+    $documentation: "A dotted property access expression",
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.expression._walk(visitor);
+        });
+    }
+}, AST_PropAccess);
+
+var AST_Sub = DEFNODE("Sub", null, {
+    $documentation: "Index-style property access, i.e. `a[\"foo\"]`",
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.expression._walk(visitor);
+            this.property._walk(visitor);
+        });
+    }
+}, AST_PropAccess);
+
+var AST_Unary = DEFNODE("Unary", "operator expression", {
+    $documentation: "Base class for unary expressions",
+    $propdoc: {
+        operator: "[string] the operator",
+        expression: "[AST_Node] expression that this unary operator applies to"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.expression._walk(visitor);
+        });
+    }
+});
+
+var AST_UnaryPrefix = DEFNODE("UnaryPrefix", null, {
+    $documentation: "Unary prefix expression, i.e. `typeof i` or `++i`"
+}, AST_Unary);
+
+var AST_UnaryPostfix = DEFNODE("UnaryPostfix", null, {
+    $documentation: "Unary postfix expression, i.e. `i++`"
+}, AST_Unary);
+
+var AST_Binary = DEFNODE("Binary", "left operator right", {
+    $documentation: "Binary expression, i.e. `a + b`",
+    $propdoc: {
+        left: "[AST_Node] left-hand side expression",
+        operator: "[string] the operator",
+        right: "[AST_Node] right-hand side expression"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.left._walk(visitor);
+            this.right._walk(visitor);
+        });
+    }
+});
+
+var AST_Conditional = DEFNODE("Conditional", "condition consequent alternative", {
+    $documentation: "Conditional expression using the ternary operator, i.e. `a ? b : c`",
+    $propdoc: {
+        condition: "[AST_Node]",
+        consequent: "[AST_Node]",
+        alternative: "[AST_Node]"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.condition._walk(visitor);
+            this.consequent._walk(visitor);
+            this.alternative._walk(visitor);
+        });
+    }
+});
+
+var AST_Assign = DEFNODE("Assign", null, {
+    $documentation: "An assignment expression — `a = b + 5`",
+}, AST_Binary);
+
+/* -----[ LITERALS ]----- */
+
+var AST_Array = DEFNODE("Array", "elements", {
+    $documentation: "An array literal",
+    $propdoc: {
+        elements: "[AST_Node*] array of elements"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            var elements = this.elements;
+            for (var i = 0, len = elements.length; i < len; i++) {
+                elements[i]._walk(visitor);
+            }
+        });
+    }
+});
+
+var AST_Object = DEFNODE("Object", "properties", {
+    $documentation: "An object literal",
+    $propdoc: {
+        properties: "[AST_ObjectProperty*] array of properties"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            var properties = this.properties;
+            for (var i = 0, len = properties.length; i < len; i++) {
+                properties[i]._walk(visitor);
+            }
+        });
+    }
+});
+
+var AST_ObjectProperty = DEFNODE("ObjectProperty", "key value", {
+    $documentation: "Base class for literal object properties",
+    $propdoc: {
+        key: "[string] the property name converted to a string for ObjectKeyVal.  For setters and getters this is an arbitrary AST_Node.",
+        value: "[AST_Node] property value.  For setters and getters this is an AST_Function."
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.value._walk(visitor);
+        });
+    }
+});
+
+var AST_ObjectKeyVal = DEFNODE("ObjectKeyVal", "quote", {
+    $documentation: "A key: value object property",
+    $propdoc: {
+        quote: "[string] the original quote character"
+    }
+}, AST_ObjectProperty);
+
+var AST_ObjectSetter = DEFNODE("ObjectSetter", null, {
+    $documentation: "An object setter property",
+}, AST_ObjectProperty);
+
+var AST_ObjectGetter = DEFNODE("ObjectGetter", null, {
+    $documentation: "An object getter property",
+}, AST_ObjectProperty);
+
+var AST_Symbol = DEFNODE("Symbol", "scope name thedef", {
+    $propdoc: {
+        name: "[string] name of this symbol",
+        scope: "[AST_Scope/S] the current scope (not necessarily the definition scope)",
+        thedef: "[SymbolDef/S] the definition of this symbol"
+    },
+    $documentation: "Base class for all symbols",
+});
+
+var AST_SymbolAccessor = DEFNODE("SymbolAccessor", null, {
+    $documentation: "The name of a property accessor (setter/getter function)"
+}, AST_Symbol);
+
+var AST_SymbolDeclaration = DEFNODE("SymbolDeclaration", "init", {
+    $documentation: "A declaration symbol (symbol in var/const, function name or argument, symbol in catch)",
+}, AST_Symbol);
+
+var AST_SymbolVar = DEFNODE("SymbolVar", null, {
+    $documentation: "Symbol defining a variable",
+}, AST_SymbolDeclaration);
+
+var AST_SymbolConst = DEFNODE("SymbolConst", null, {
+    $documentation: "A constant declaration"
+}, AST_SymbolDeclaration);
+
+var AST_SymbolFunarg = DEFNODE("SymbolFunarg", null, {
+    $documentation: "Symbol naming a function argument",
+}, AST_SymbolVar);
+
+var AST_SymbolDefun = DEFNODE("SymbolDefun", null, {
+    $documentation: "Symbol defining a function",
+}, AST_SymbolDeclaration);
+
+var AST_SymbolLambda = DEFNODE("SymbolLambda", null, {
+    $documentation: "Symbol naming a function expression",
+}, AST_SymbolDeclaration);
+
+var AST_SymbolCatch = DEFNODE("SymbolCatch", null, {
+    $documentation: "Symbol naming the exception in catch",
+}, AST_SymbolDeclaration);
+
+var AST_Label = DEFNODE("Label", "references", {
+    $documentation: "Symbol naming a label (declaration)",
+    $propdoc: {
+        references: "[AST_LoopControl*] a list of nodes referring to this label"
+    },
+    initialize: function() {
+        this.references = [];
+        this.thedef = this;
+    }
+}, AST_Symbol);
+
+var AST_SymbolRef = DEFNODE("SymbolRef", null, {
+    $documentation: "Reference to some symbol (not definition/declaration)",
+}, AST_Symbol);
+
+var AST_LabelRef = DEFNODE("LabelRef", null, {
+    $documentation: "Reference to a label symbol",
+}, AST_Symbol);
+
+var AST_This = DEFNODE("This", null, {
+    $documentation: "The `this` symbol",
+}, AST_Symbol);
+
+var AST_Constant = DEFNODE("Constant", null, {
+    $documentation: "Base class for all constants",
+    getValue: function() {
+        return this.value;
+    }
+});
+
+var AST_String = DEFNODE("String", "value quote", {
+    $documentation: "A string literal",
+    $propdoc: {
+        value: "[string] the contents of this string",
+        quote: "[string] the original quote character"
+    }
+}, AST_Constant);
+
+var AST_Number = DEFNODE("Number", "value literal", {
+    $documentation: "A number literal",
+    $propdoc: {
+        value: "[number] the numeric value",
+        literal: "[string] numeric value as string (optional)"
+    }
+}, AST_Constant);
+
+var AST_RegExp = DEFNODE("RegExp", "value", {
+    $documentation: "A regexp literal",
+    $propdoc: {
+        value: "[RegExp] the actual regexp"
+    }
+}, AST_Constant);
+
+var AST_Atom = DEFNODE("Atom", null, {
+    $documentation: "Base class for atoms",
+}, AST_Constant);
+
+var AST_Null = DEFNODE("Null", null, {
+    $documentation: "The `null` atom",
+    value: null
+}, AST_Atom);
+
+var AST_NaN = DEFNODE("NaN", null, {
+    $documentation: "The impossible value",
+    value: 0/0
+}, AST_Atom);
+
+var AST_Undefined = DEFNODE("Undefined", null, {
+    $documentation: "The `undefined` value",
+    value: (function(){}())
+}, AST_Atom);
+
+var AST_Hole = DEFNODE("Hole", null, {
+    $documentation: "A hole in an array",
+    value: (function(){}())
+}, AST_Atom);
+
+var AST_Infinity = DEFNODE("Infinity", null, {
+    $documentation: "The `Infinity` value",
+    value: 1/0
+}, AST_Atom);
+
+var AST_Boolean = DEFNODE("Boolean", null, {
+    $documentation: "Base class for booleans",
+}, AST_Atom);
+
+var AST_False = DEFNODE("False", null, {
+    $documentation: "The `false` atom",
+    value: false
+}, AST_Boolean);
+
+var AST_True = DEFNODE("True", null, {
+    $documentation: "The `true` atom",
+    value: true
+}, AST_Boolean);
+
+/* -----[ TreeWalker ]----- */
+
+function TreeWalker(callback) {
+    this.visit = callback;
+    this.stack = [];
+    this.directives = Object.create(null);
+};
+TreeWalker.prototype = {
+    _visit: function(node, descend) {
+        this.push(node);
+        var ret = this.visit(node, descend ? function(){
+            descend.call(node);
+        } : noop);
+        if (!ret && descend) {
+            descend.call(node);
+        }
+        this.pop(node);
+        return ret;
+    },
+    parent: function(n) {
+        return this.stack[this.stack.length - 2 - (n || 0)];
+    },
+    push: function (node) {
+        if (node instanceof AST_Lambda) {
+            this.directives = Object.create(this.directives);
+        } else if (node instanceof AST_Directive && !this.directives[node.value]) {
+            this.directives[node.value] = node;
+        }
+        this.stack.push(node);
+    },
+    pop: function(node) {
+        this.stack.pop();
+        if (node instanceof AST_Lambda) {
+            this.directives = Object.getPrototypeOf(this.directives);
+        }
+    },
+    self: function() {
+        return this.stack[this.stack.length - 1];
+    },
+    find_parent: function(type) {
+        var stack = this.stack;
+        for (var i = stack.length; --i >= 0;) {
+            var x = stack[i];
+            if (x instanceof type) return x;
+        }
+    },
+    has_directive: function(type) {
+        var dir = this.directives[type];
+        if (dir) return dir;
+        var node = this.stack[this.stack.length - 1];
+        if (node instanceof AST_Scope) {
+            for (var i = 0; i < node.body.length; ++i) {
+                var st = node.body[i];
+                if (!(st instanceof AST_Directive)) break;
+                if (st.value == type) return st;
+            }
+        }
+    },
+    in_boolean_context: function() {
+        var stack = this.stack;
+        var i = stack.length, self = stack[--i];
+        while (i > 0) {
+            var p = stack[--i];
+            if ((p instanceof AST_If           && p.condition === self) ||
+                (p instanceof AST_Conditional  && p.condition === self) ||
+                (p instanceof AST_DWLoop       && p.condition === self) ||
+                (p instanceof AST_For          && p.condition === self) ||
+                (p instanceof AST_UnaryPrefix  && p.operator == "!" && p.expression === self))
+            {
+                return true;
+            }
+            if (!(p instanceof AST_Binary && (p.operator == "&&" || p.operator == "||")))
+                return false;
+            self = p;
+        }
+    },
+    loopcontrol_target: function(node) {
+        var stack = this.stack;
+        if (node.label) for (var i = stack.length; --i >= 0;) {
+            var x = stack[i];
+            if (x instanceof AST_LabeledStatement && x.label.name == node.label.name)
+                return x.body;
+        } else for (var i = stack.length; --i >= 0;) {
+            var x = stack[i];
+            if (x instanceof AST_IterationStatement
+                || node instanceof AST_Break && x instanceof AST_Switch)
+                return x;
+        }
+    }
+};
diff --git a/node_modules/uglify-js/lib/compress.js b/node_modules/uglify-js/lib/compress.js
new file mode 100644
index 000000000..1d9258cf6
--- /dev/null
+++ b/node_modules/uglify-js/lib/compress.js
@@ -0,0 +1,3997 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+function Compressor(options, false_by_default) {
+    if (!(this instanceof Compressor))
+        return new Compressor(options, false_by_default);
+    TreeTransformer.call(this, this.before, this.after);
+    this.options = defaults(options, {
+        angular       : false,
+        booleans      : !false_by_default,
+        cascade       : !false_by_default,
+        collapse_vars : !false_by_default,
+        comparisons   : !false_by_default,
+        conditionals  : !false_by_default,
+        dead_code     : !false_by_default,
+        drop_console  : false,
+        drop_debugger : !false_by_default,
+        evaluate      : !false_by_default,
+        expression    : false,
+        global_defs   : {},
+        hoist_funs    : !false_by_default,
+        hoist_vars    : false,
+        if_return     : !false_by_default,
+        join_vars     : !false_by_default,
+        keep_fargs    : true,
+        keep_fnames   : false,
+        keep_infinity : false,
+        loops         : !false_by_default,
+        negate_iife   : !false_by_default,
+        passes        : 1,
+        properties    : !false_by_default,
+        pure_getters  : !false_by_default && "strict",
+        pure_funcs    : null,
+        reduce_vars   : !false_by_default,
+        screw_ie8     : true,
+        sequences     : !false_by_default,
+        side_effects  : !false_by_default,
+        switches      : !false_by_default,
+        top_retain    : null,
+        toplevel      : !!(options && options["top_retain"]),
+        unsafe        : false,
+        unsafe_comps  : false,
+        unsafe_math   : false,
+        unsafe_proto  : false,
+        unused        : !false_by_default,
+        warnings      : true,
+    }, true);
+    var pure_funcs = this.options["pure_funcs"];
+    if (typeof pure_funcs == "function") {
+        this.pure_funcs = pure_funcs;
+    } else {
+        this.pure_funcs = pure_funcs ? function(node) {
+            return pure_funcs.indexOf(node.expression.print_to_string()) < 0;
+        } : return_true;
+    }
+    var top_retain = this.options["top_retain"];
+    if (top_retain instanceof RegExp) {
+        this.top_retain = function(def) {
+            return top_retain.test(def.name);
+        };
+    } else if (typeof top_retain == "function") {
+        this.top_retain = top_retain;
+    } else if (top_retain) {
+        if (typeof top_retain == "string") {
+            top_retain = top_retain.split(/,/);
+        }
+        this.top_retain = function(def) {
+            return top_retain.indexOf(def.name) >= 0;
+        };
+    }
+    var sequences = this.options["sequences"];
+    this.sequences_limit = sequences == 1 ? 200 : sequences | 0;
+    this.warnings_produced = {};
+};
+
+Compressor.prototype = new TreeTransformer;
+merge(Compressor.prototype, {
+    option: function(key) { return this.options[key] },
+    compress: function(node) {
+        if (this.option("expression")) {
+            node = node.process_expression(true);
+        }
+        var passes = +this.options.passes || 1;
+        for (var pass = 0; pass < passes && pass < 3; ++pass) {
+            if (pass > 0 || this.option("reduce_vars"))
+                node.reset_opt_flags(this, true);
+            node = node.transform(this);
+        }
+        if (this.option("expression")) {
+            node = node.process_expression(false);
+        }
+        return node;
+    },
+    info: function() {
+        if (this.options.warnings == "verbose") {
+            AST_Node.warn.apply(AST_Node, arguments);
+        }
+    },
+    warn: function(text, props) {
+        if (this.options.warnings) {
+            // only emit unique warnings
+            var message = string_template(text, props);
+            if (!(message in this.warnings_produced)) {
+                this.warnings_produced[message] = true;
+                AST_Node.warn.apply(AST_Node, arguments);
+            }
+        }
+    },
+    clear_warnings: function() {
+        this.warnings_produced = {};
+    },
+    before: function(node, descend, in_list) {
+        if (node._squeezed) return node;
+        var was_scope = false;
+        if (node instanceof AST_Scope) {
+            node = node.hoist_declarations(this);
+            was_scope = true;
+        }
+        // Before https://github.com/mishoo/UglifyJS2/pull/1602 AST_Node.optimize()
+        // would call AST_Node.transform() if a different instance of AST_Node is
+        // produced after OPT().
+        // This corrupts TreeWalker.stack, which cause AST look-ups to malfunction.
+        // Migrate and defer all children's AST_Node.transform() to below, which
+        // will now happen after this parent AST_Node has been properly substituted
+        // thus gives a consistent AST snapshot.
+        descend(node, this);
+        // Existing code relies on how AST_Node.optimize() worked, and omitting the
+        // following replacement call would result in degraded efficiency of both
+        // output and performance.
+        descend(node, this);
+        var opt = node.optimize(this);
+        if (was_scope && opt instanceof AST_Scope) {
+            opt.drop_unused(this);
+            descend(opt, this);
+        }
+        if (opt === node) opt._squeezed = true;
+        return opt;
+    }
+});
+
+(function(){
+
+    function OPT(node, optimizer) {
+        node.DEFMETHOD("optimize", function(compressor){
+            var self = this;
+            if (self._optimized) return self;
+            if (compressor.has_directive("use asm")) return self;
+            var opt = optimizer(self, compressor);
+            opt._optimized = true;
+            return opt;
+        });
+    };
+
+    OPT(AST_Node, function(self, compressor){
+        return self;
+    });
+
+    AST_Node.DEFMETHOD("equivalent_to", function(node){
+        return this.TYPE == node.TYPE && this.print_to_string() == node.print_to_string();
+    });
+
+    AST_Node.DEFMETHOD("process_expression", function(insert, compressor) {
+        var self = this;
+        var tt = new TreeTransformer(function(node) {
+            if (insert && node instanceof AST_SimpleStatement) {
+                return make_node(AST_Return, node, {
+                    value: node.body
+                });
+            }
+            if (!insert && node instanceof AST_Return) {
+                if (compressor) {
+                    var value = node.value && node.value.drop_side_effect_free(compressor, true);
+                    return value ? make_node(AST_SimpleStatement, node, {
+                        body: value
+                    }) : make_node(AST_EmptyStatement, node);
+                }
+                return make_node(AST_SimpleStatement, node, {
+                    body: node.value || make_node(AST_UnaryPrefix, node, {
+                        operator: "void",
+                        expression: make_node(AST_Number, node, {
+                            value: 0
+                        })
+                    })
+                });
+            }
+            if (node instanceof AST_Lambda && node !== self) {
+                return node;
+            }
+            if (node instanceof AST_Block) {
+                var index = node.body.length - 1;
+                if (index >= 0) {
+                    node.body[index] = node.body[index].transform(tt);
+                }
+            }
+            if (node instanceof AST_If) {
+                node.body = node.body.transform(tt);
+                if (node.alternative) {
+                    node.alternative = node.alternative.transform(tt);
+                }
+            }
+            if (node instanceof AST_With) {
+                node.body = node.body.transform(tt);
+            }
+            return node;
+        });
+        return self.transform(tt);
+    });
+
+    AST_Node.DEFMETHOD("reset_opt_flags", function(compressor, rescan){
+        var reduce_vars = rescan && compressor.option("reduce_vars");
+        var toplevel = compressor.option("toplevel");
+        var safe_ids = Object.create(null);
+        var suppressor = new TreeWalker(function(node) {
+            if (node instanceof AST_Symbol) {
+                var d = node.definition();
+                if (node instanceof AST_SymbolRef) d.references.push(node);
+                d.fixed = false;
+            }
+        });
+        var tw = new TreeWalker(function(node, descend){
+            node._squeezed = false;
+            node._optimized = false;
+            if (reduce_vars) {
+                if (node instanceof AST_Toplevel) node.globals.each(reset_def);
+                if (node instanceof AST_Scope) node.variables.each(reset_def);
+                if (node instanceof AST_SymbolRef) {
+                    var d = node.definition();
+                    d.references.push(node);
+                    if (d.fixed === undefined || !is_safe(d)
+                        || is_modified(node, 0, node.fixed_value() instanceof AST_Lambda)) {
+                        d.fixed = false;
+                    }
+                }
+                if (node instanceof AST_SymbolCatch) {
+                    node.definition().fixed = false;
+                }
+                if (node instanceof AST_VarDef) {
+                    var d = node.name.definition();
+                    if (d.fixed == null) {
+                        if (node.value) {
+                            d.fixed = function() {
+                                return node.value;
+                            };
+                            mark(d, false);
+                            descend();
+                        } else {
+                            d.fixed = null;
+                        }
+                        mark(d, true);
+                        return true;
+                    } else if (node.value) {
+                        d.fixed = false;
+                    }
+                }
+                if (node instanceof AST_Defun) {
+                    var d = node.name.definition();
+                    if (!toplevel && d.global || is_safe(d)) {
+                        d.fixed = false;
+                    } else {
+                        d.fixed = node;
+                        mark(d, true);
+                    }
+                    var save_ids = safe_ids;
+                    safe_ids = Object.create(null);
+                    descend();
+                    safe_ids = save_ids;
+                    return true;
+                }
+                var iife;
+                if (node instanceof AST_Function
+                    && !node.name
+                    && (iife = tw.parent()) instanceof AST_Call
+                    && iife.expression === node) {
+                    // Virtually turn IIFE parameters into variable definitions:
+                    //   (function(a,b) {...})(c,d) => (function() {var a=c,b=d; ...})()
+                    // So existing transformation rules can work on them.
+                    node.argnames.forEach(function(arg, i) {
+                        var d = arg.definition();
+                        d.fixed = function() {
+                            return iife.args[i] || make_node(AST_Undefined, iife);
+                        };
+                        mark(d, true);
+                    });
+                }
+                if (node instanceof AST_If || node instanceof AST_DWLoop) {
+                    node.condition.walk(tw);
+                    push();
+                    node.body.walk(tw);
+                    pop();
+                    if (node.alternative) {
+                        push();
+                        node.alternative.walk(tw);
+                        pop();
+                    }
+                    return true;
+                }
+                if (node instanceof AST_LabeledStatement) {
+                    push();
+                    node.body.walk(tw);
+                    pop();
+                    return true;
+                }
+                if (node instanceof AST_For) {
+                    if (node.init) node.init.walk(tw);
+                    push();
+                    if (node.condition) node.condition.walk(tw);
+                    node.body.walk(tw);
+                    if (node.step) node.step.walk(tw);
+                    pop();
+                    return true;
+                }
+                if (node instanceof AST_ForIn) {
+                    node.init.walk(suppressor);
+                    node.object.walk(tw);
+                    push();
+                    node.body.walk(tw);
+                    pop();
+                    return true;
+                }
+                if (node instanceof AST_Catch || node instanceof AST_SwitchBranch) {
+                    push();
+                    descend();
+                    pop();
+                    return true;
+                }
+            }
+        });
+        this.walk(tw);
+
+        function mark(def, safe) {
+            safe_ids[def.id] = safe;
+        }
+
+        function is_safe(def) {
+            if (safe_ids[def.id]) {
+                if (def.fixed == null) {
+                    var orig = def.orig[0];
+                    if (orig instanceof AST_SymbolFunarg || orig.name == "arguments") return false;
+                    def.fixed = make_node(AST_Undefined, orig);
+                }
+                return true;
+            }
+        }
+
+        function push() {
+            safe_ids = Object.create(safe_ids);
+        }
+
+        function pop() {
+            safe_ids = Object.getPrototypeOf(safe_ids);
+        }
+
+        function reset_def(def) {
+            if (toplevel || !def.global || def.orig[0] instanceof AST_SymbolConst) {
+                def.fixed = undefined;
+            } else {
+                def.fixed = false;
+            }
+            def.references = [];
+            def.should_replace = undefined;
+        }
+
+        function is_modified(node, level, func) {
+            var parent = tw.parent(level);
+            if (is_lhs(node, parent)
+                || !func && parent instanceof AST_Call && parent.expression === node) {
+                return true;
+            } else if (parent instanceof AST_PropAccess && parent.expression === node) {
+                return !func && is_modified(parent, level + 1);
+            }
+        }
+    });
+
+    AST_SymbolRef.DEFMETHOD("fixed_value", function() {
+        var fixed = this.definition().fixed;
+        if (!fixed || fixed instanceof AST_Node) return fixed;
+        return fixed();
+    });
+
+    function find_variable(compressor, name) {
+        var scope, i = 0;
+        while (scope = compressor.parent(i++)) {
+            if (scope instanceof AST_Scope) break;
+            if (scope instanceof AST_Catch) {
+                scope = scope.argname.definition().scope;
+                break;
+            }
+        }
+        return scope.find_variable(name);
+    }
+
+    function make_node(ctor, orig, props) {
+        if (!props) props = {};
+        if (orig) {
+            if (!props.start) props.start = orig.start;
+            if (!props.end) props.end = orig.end;
+        }
+        return new ctor(props);
+    };
+
+    function make_node_from_constant(val, orig) {
+        switch (typeof val) {
+          case "string":
+            return make_node(AST_String, orig, {
+                value: val
+            });
+          case "number":
+            if (isNaN(val)) return make_node(AST_NaN, orig);
+            if (isFinite(val)) {
+                return 1 / val < 0 ? make_node(AST_UnaryPrefix, orig, {
+                    operator: "-",
+                    expression: make_node(AST_Number, orig, { value: -val })
+                }) : make_node(AST_Number, orig, { value: val });
+            }
+            return val < 0 ? make_node(AST_UnaryPrefix, orig, {
+                operator: "-",
+                expression: make_node(AST_Infinity, orig)
+            }) : make_node(AST_Infinity, orig);
+          case "boolean":
+            return make_node(val ? AST_True : AST_False, orig);
+          case "undefined":
+            return make_node(AST_Undefined, orig);
+          default:
+            if (val === null) {
+                return make_node(AST_Null, orig, { value: null });
+            }
+            if (val instanceof RegExp) {
+                return make_node(AST_RegExp, orig, { value: val });
+            }
+            throw new Error(string_template("Can't handle constant of type: {type}", {
+                type: typeof val
+            }));
+        }
+    };
+
+    // we shouldn't compress (1,func)(something) to
+    // func(something) because that changes the meaning of
+    // the func (becomes lexical instead of global).
+    function maintain_this_binding(parent, orig, val) {
+        if (parent instanceof AST_UnaryPrefix && parent.operator == "delete"
+            || parent instanceof AST_Call && parent.expression === orig
+                && (val instanceof AST_PropAccess || val instanceof AST_SymbolRef && val.name == "eval")) {
+            return make_node(AST_Seq, orig, {
+                car: make_node(AST_Number, orig, {
+                    value: 0
+                }),
+                cdr: val
+            });
+        }
+        return val;
+    }
+
+    function as_statement_array(thing) {
+        if (thing === null) return [];
+        if (thing instanceof AST_BlockStatement) return thing.body;
+        if (thing instanceof AST_EmptyStatement) return [];
+        if (thing instanceof AST_Statement) return [ thing ];
+        throw new Error("Can't convert thing to statement array");
+    };
+
+    function is_empty(thing) {
+        if (thing === null) return true;
+        if (thing instanceof AST_EmptyStatement) return true;
+        if (thing instanceof AST_BlockStatement) return thing.body.length == 0;
+        return false;
+    };
+
+    function loop_body(x) {
+        if (x instanceof AST_Switch) return x;
+        if (x instanceof AST_For || x instanceof AST_ForIn || x instanceof AST_DWLoop) {
+            return (x.body instanceof AST_BlockStatement ? x.body : x);
+        }
+        return x;
+    };
+
+    function is_iife_call(node) {
+        if (node instanceof AST_Call && !(node instanceof AST_New)) {
+            return node.expression instanceof AST_Function || is_iife_call(node.expression);
+        }
+        return false;
+    }
+
+    function tighten_body(statements, compressor) {
+        var CHANGED, max_iter = 10;
+        do {
+            CHANGED = false;
+            if (compressor.option("angular")) {
+                statements = process_for_angular(statements);
+            }
+            statements = eliminate_spurious_blocks(statements);
+            if (compressor.option("dead_code")) {
+                statements = eliminate_dead_code(statements, compressor);
+            }
+            if (compressor.option("if_return")) {
+                statements = handle_if_return(statements, compressor);
+            }
+            if (compressor.sequences_limit > 0) {
+                statements = sequencesize(statements, compressor);
+            }
+            if (compressor.option("join_vars")) {
+                statements = join_consecutive_vars(statements, compressor);
+            }
+            if (compressor.option("collapse_vars")) {
+                statements = collapse_single_use_vars(statements, compressor);
+            }
+        } while (CHANGED && max_iter-- > 0);
+
+        return statements;
+
+        function collapse_single_use_vars(statements, compressor) {
+            // Iterate statements backwards looking for a statement with a var/const
+            // declaration immediately preceding it. Grab the rightmost var definition
+            // and if it has exactly one reference then attempt to replace its reference
+            // in the statement with the var value and then erase the var definition.
+
+            var self = compressor.self();
+            var var_defs_removed = false;
+            var toplevel = compressor.option("toplevel");
+            for (var stat_index = statements.length; --stat_index >= 0;) {
+                var stat = statements[stat_index];
+                if (stat instanceof AST_Definitions) continue;
+
+                // Process child blocks of statement if present.
+                [stat, stat.body, stat.alternative, stat.bcatch, stat.bfinally].forEach(function(node) {
+                    node && node.body && collapse_single_use_vars(node.body, compressor);
+                });
+
+                // The variable definition must precede a statement.
+                if (stat_index <= 0) break;
+                var prev_stat_index = stat_index - 1;
+                var prev_stat = statements[prev_stat_index];
+                if (!(prev_stat instanceof AST_Definitions)) continue;
+                var var_defs = prev_stat.definitions;
+                if (var_defs == null) continue;
+
+                var var_names_seen = {};
+                var side_effects_encountered = false;
+                var lvalues_encountered = false;
+                var lvalues = {};
+
+                // Scan variable definitions from right to left.
+                for (var var_defs_index = var_defs.length; --var_defs_index >= 0;) {
+
+                    // Obtain var declaration and var name with basic sanity check.
+                    var var_decl = var_defs[var_defs_index];
+                    if (var_decl.value == null) break;
+                    var var_name = var_decl.name.name;
+                    if (!var_name || !var_name.length) break;
+
+                    // Bail if we've seen a var definition of same name before.
+                    if (var_name in var_names_seen) break;
+                    var_names_seen[var_name] = true;
+
+                    // Only interested in cases with just one reference to the variable.
+                    var def = self.find_variable && self.find_variable(var_name);
+                    if (!def || !def.references || def.references.length !== 1
+                        || var_name == "arguments" || (!toplevel && def.global)) {
+                        side_effects_encountered = true;
+                        continue;
+                    }
+                    var ref = def.references[0];
+
+                    // Don't replace ref if eval() or with statement in scope.
+                    if (ref.scope.uses_eval || ref.scope.uses_with) break;
+
+                    // Constant single use vars can be replaced in any scope.
+                    if (var_decl.value.is_constant()) {
+                        var ctt = new TreeTransformer(function(node) {
+                            var parent = ctt.parent();
+                            if (parent instanceof AST_IterationStatement
+                                && (parent.condition === node || parent.init === node)) {
+                                return node;
+                            }
+                            if (node === ref)
+                                return replace_var(node, parent, true);
+                        });
+                        stat.transform(ctt);
+                        continue;
+                    }
+
+                    // Restrict var replacement to constants if side effects encountered.
+                    if (side_effects_encountered |= lvalues_encountered) continue;
+
+                    var value_has_side_effects = var_decl.value.has_side_effects(compressor);
+                    // Non-constant single use vars can only be replaced in same scope.
+                    if (ref.scope !== self) {
+                        side_effects_encountered |= value_has_side_effects;
+                        continue;
+                    }
+
+                    // Detect lvalues in var value.
+                    var tw = new TreeWalker(function(node){
+                        if (node instanceof AST_SymbolRef && is_lvalue(node, tw.parent())) {
+                            lvalues[node.name] = lvalues_encountered = true;
+                        }
+                    });
+                    var_decl.value.walk(tw);
+
+                    // Replace the non-constant single use var in statement if side effect free.
+                    var unwind = false;
+                    var tt = new TreeTransformer(
+                        function preorder(node) {
+                            if (unwind) return node;
+                            var parent = tt.parent();
+                            if (node instanceof AST_Lambda
+                                || node instanceof AST_Try
+                                || node instanceof AST_With
+                                || node instanceof AST_Case
+                                || node instanceof AST_IterationStatement
+                                || (parent instanceof AST_If          && node !== parent.condition)
+                                || (parent instanceof AST_Conditional && node !== parent.condition)
+                                || (node instanceof AST_SymbolRef
+                                    && value_has_side_effects
+                                    && !are_references_in_scope(node.definition(), self))
+                                || (parent instanceof AST_Binary
+                                    && (parent.operator == "&&" || parent.operator == "||")
+                                    && node === parent.right)
+                                || (parent instanceof AST_Switch && node !== parent.expression)) {
+                                return side_effects_encountered = unwind = true, node;
+                            }
+                            function are_references_in_scope(def, scope) {
+                                if (def.orig.length === 1
+                                    && def.orig[0] instanceof AST_SymbolDefun) return true;
+                                if (def.scope !== scope) return false;
+                                var refs = def.references;
+                                for (var i = 0, len = refs.length; i < len; i++) {
+                                    if (refs[i].scope !== scope) return false;
+                                }
+                                return true;
+                            }
+                        },
+                        function postorder(node) {
+                            if (unwind) return node;
+                            if (node === ref)
+                                return unwind = true, replace_var(node, tt.parent(), false);
+                            if (side_effects_encountered |= node.has_side_effects(compressor))
+                                return unwind = true, node;
+                            if (lvalues_encountered && node instanceof AST_SymbolRef && node.name in lvalues) {
+                                side_effects_encountered = true;
+                                return unwind = true, node;
+                            }
+                        }
+                    );
+                    stat.transform(tt);
+                }
+            }
+
+            // Remove extraneous empty statments in block after removing var definitions.
+            // Leave at least one statement in `statements`.
+            if (var_defs_removed) for (var i = statements.length; --i >= 0;) {
+                if (statements.length > 1 && statements[i] instanceof AST_EmptyStatement)
+                    statements.splice(i, 1);
+            }
+
+            return statements;
+
+            function is_lvalue(node, parent) {
+                return node instanceof AST_SymbolRef && is_lhs(node, parent);
+            }
+            function replace_var(node, parent, is_constant) {
+                if (is_lvalue(node, parent)) return node;
+
+                // Remove var definition and return its value to the TreeTransformer to replace.
+                var value = maintain_this_binding(parent, node, var_decl.value);
+                var_decl.value = null;
+
+                var_defs.splice(var_defs_index, 1);
+                if (var_defs.length === 0) {
+                    statements[prev_stat_index] = make_node(AST_EmptyStatement, self);
+                    var_defs_removed = true;
+                }
+                // Further optimize statement after substitution.
+                stat.reset_opt_flags(compressor);
+
+                compressor.info("Collapsing " + (is_constant ? "constant" : "variable") +
+                    " " + var_name + " [{file}:{line},{col}]", node.start);
+                CHANGED = true;
+                return value;
+            }
+        }
+
+        function process_for_angular(statements) {
+            function has_inject(comment) {
+                return /@ngInject/.test(comment.value);
+            }
+            function make_arguments_names_list(func) {
+                return func.argnames.map(function(sym){
+                    return make_node(AST_String, sym, { value: sym.name });
+                });
+            }
+            function make_array(orig, elements) {
+                return make_node(AST_Array, orig, { elements: elements });
+            }
+            function make_injector(func, name) {
+                return make_node(AST_SimpleStatement, func, {
+                    body: make_node(AST_Assign, func, {
+                        operator: "=",
+                        left: make_node(AST_Dot, name, {
+                            expression: make_node(AST_SymbolRef, name, name),
+                            property: "$inject"
+                        }),
+                        right: make_array(func, make_arguments_names_list(func))
+                    })
+                });
+            }
+            function check_expression(body) {
+                if (body && body.args) {
+                    // if this is a function call check all of arguments passed
+                    body.args.forEach(function(argument, index, array) {
+                        var comments = argument.start.comments_before;
+                        // if the argument is function preceded by @ngInject
+                        if (argument instanceof AST_Lambda && comments.length && has_inject(comments[0])) {
+                            // replace the function with an array of names of its parameters and function at the end
+                            array[index] = make_array(argument, make_arguments_names_list(argument).concat(argument));
+                        }
+                    });
+                    // if this is chained call check previous one recursively
+                    if (body.expression && body.expression.expression) {
+                        check_expression(body.expression.expression);
+                    }
+                }
+            }
+            return statements.reduce(function(a, stat){
+                a.push(stat);
+
+                if (stat.body && stat.body.args) {
+                    check_expression(stat.body);
+                } else {
+                    var token = stat.start;
+                    var comments = token.comments_before;
+                    if (comments && comments.length > 0) {
+                        var last = comments.pop();
+                        if (has_inject(last)) {
+                            // case 1: defun
+                            if (stat instanceof AST_Defun) {
+                                a.push(make_injector(stat, stat.name));
+                            }
+                            else if (stat instanceof AST_Definitions) {
+                                stat.definitions.forEach(function(def) {
+                                    if (def.value && def.value instanceof AST_Lambda) {
+                                        a.push(make_injector(def.value, def.name));
+                                    }
+                                });
+                            }
+                            else {
+                                compressor.warn("Unknown statement marked with @ngInject [{file}:{line},{col}]", token);
+                            }
+                        }
+                    }
+                }
+
+                return a;
+            }, []);
+        }
+
+        function eliminate_spurious_blocks(statements) {
+            var seen_dirs = [];
+            return statements.reduce(function(a, stat){
+                if (stat instanceof AST_BlockStatement) {
+                    CHANGED = true;
+                    a.push.apply(a, eliminate_spurious_blocks(stat.body));
+                } else if (stat instanceof AST_EmptyStatement) {
+                    CHANGED = true;
+                } else if (stat instanceof AST_Directive) {
+                    if (seen_dirs.indexOf(stat.value) < 0) {
+                        a.push(stat);
+                        seen_dirs.push(stat.value);
+                    } else {
+                        CHANGED = true;
+                    }
+                } else {
+                    a.push(stat);
+                }
+                return a;
+            }, []);
+        };
+
+        function handle_if_return(statements, compressor) {
+            var self = compressor.self();
+            var multiple_if_returns = has_multiple_if_returns(statements);
+            var in_lambda = self instanceof AST_Lambda;
+            var ret = []; // Optimized statements, build from tail to front
+            loop: for (var i = statements.length; --i >= 0;) {
+                var stat = statements[i];
+                switch (true) {
+                  case (in_lambda && stat instanceof AST_Return && !stat.value && ret.length == 0):
+                    CHANGED = true;
+                    // note, ret.length is probably always zero
+                    // because we drop unreachable code before this
+                    // step.  nevertheless, it's good to check.
+                    continue loop;
+                  case stat instanceof AST_If:
+                    if (stat.body instanceof AST_Return) {
+                        //---
+                        // pretty silly case, but:
+                        // if (foo()) return; return; ==> foo(); return;
+                        if (((in_lambda && ret.length == 0)
+                             || (ret[0] instanceof AST_Return && !ret[0].value))
+                            && !stat.body.value && !stat.alternative) {
+                            CHANGED = true;
+                            var cond = make_node(AST_SimpleStatement, stat.condition, {
+                                body: stat.condition
+                            });
+                            ret.unshift(cond);
+                            continue loop;
+                        }
+                        //---
+                        // if (foo()) return x; return y; ==> return foo() ? x : y;
+                        if (ret[0] instanceof AST_Return && stat.body.value && ret[0].value && !stat.alternative) {
+                            CHANGED = true;
+                            stat = stat.clone();
+                            stat.alternative = ret[0];
+                            ret[0] = stat.transform(compressor);
+                            continue loop;
+                        }
+                        //---
+                        // if (foo()) return x; [ return ; ] ==> return foo() ? x : undefined;
+                        if (multiple_if_returns && (ret.length == 0 || ret[0] instanceof AST_Return)
+                            && stat.body.value && !stat.alternative && in_lambda) {
+                            CHANGED = true;
+                            stat = stat.clone();
+                            stat.alternative = ret[0] || make_node(AST_Return, stat, {
+                                value: null
+                            });
+                            ret[0] = stat.transform(compressor);
+                            continue loop;
+                        }
+                        //---
+                        // if (foo()) return; [ else x... ]; y... ==> if (!foo()) { x...; y... }
+                        if (!stat.body.value && in_lambda) {
+                            CHANGED = true;
+                            stat = stat.clone();
+                            stat.condition = stat.condition.negate(compressor);
+                            var body = as_statement_array(stat.alternative).concat(ret);
+                            var funs = extract_functions_from_statement_array(body);
+                            stat.body = make_node(AST_BlockStatement, stat, {
+                                body: body
+                            });
+                            stat.alternative = null;
+                            ret = funs.concat([ stat.transform(compressor) ]);
+                            continue loop;
+                        }
+
+                        //---
+                        // if (a) return b; if (c) return d; e; ==> return a ? b : c ? d : void e;
+                        //
+                        // if sequences is not enabled, this can lead to an endless loop (issue #866).
+                        // however, with sequences on this helps producing slightly better output for
+                        // the example code.
+                        if (compressor.option("sequences")
+                            && i > 0 && statements[i - 1] instanceof AST_If && statements[i - 1].body instanceof AST_Return
+                            && ret.length == 1 && in_lambda && ret[0] instanceof AST_SimpleStatement
+                            && !stat.alternative) {
+                            CHANGED = true;
+                            ret.push(make_node(AST_Return, ret[0], {
+                                value: null
+                            }).transform(compressor));
+                            ret.unshift(stat);
+                            continue loop;
+                        }
+                    }
+
+                    var ab = aborts(stat.body);
+                    var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab) : null;
+                    if (ab && ((ab instanceof AST_Return && !ab.value && in_lambda)
+                               || (ab instanceof AST_Continue && self === loop_body(lct))
+                               || (ab instanceof AST_Break && lct instanceof AST_BlockStatement && self === lct))) {
+                        if (ab.label) {
+                            remove(ab.label.thedef.references, ab);
+                        }
+                        CHANGED = true;
+                        var body = as_statement_array(stat.body).slice(0, -1);
+                        stat = stat.clone();
+                        stat.condition = stat.condition.negate(compressor);
+                        stat.body = make_node(AST_BlockStatement, stat, {
+                            body: as_statement_array(stat.alternative).concat(ret)
+                        });
+                        stat.alternative = make_node(AST_BlockStatement, stat, {
+                            body: body
+                        });
+                        ret = [ stat.transform(compressor) ];
+                        continue loop;
+                    }
+
+                    var ab = aborts(stat.alternative);
+                    var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab) : null;
+                    if (ab && ((ab instanceof AST_Return && !ab.value && in_lambda)
+                               || (ab instanceof AST_Continue && self === loop_body(lct))
+                               || (ab instanceof AST_Break && lct instanceof AST_BlockStatement && self === lct))) {
+                        if (ab.label) {
+                            remove(ab.label.thedef.references, ab);
+                        }
+                        CHANGED = true;
+                        stat = stat.clone();
+                        stat.body = make_node(AST_BlockStatement, stat.body, {
+                            body: as_statement_array(stat.body).concat(ret)
+                        });
+                        stat.alternative = make_node(AST_BlockStatement, stat.alternative, {
+                            body: as_statement_array(stat.alternative).slice(0, -1)
+                        });
+                        ret = [ stat.transform(compressor) ];
+                        continue loop;
+                    }
+
+                    ret.unshift(stat);
+                    break;
+                  default:
+                    ret.unshift(stat);
+                    break;
+                }
+            }
+            return ret;
+
+            function has_multiple_if_returns(statements) {
+                var n = 0;
+                for (var i = statements.length; --i >= 0;) {
+                    var stat = statements[i];
+                    if (stat instanceof AST_If && stat.body instanceof AST_Return) {
+                        if (++n > 1) return true;
+                    }
+                }
+                return false;
+            }
+        };
+
+        function eliminate_dead_code(statements, compressor) {
+            var has_quit = false;
+            var orig = statements.length;
+            var self = compressor.self();
+            statements = statements.reduce(function(a, stat){
+                if (has_quit) {
+                    extract_declarations_from_unreachable_code(compressor, stat, a);
+                } else {
+                    if (stat instanceof AST_LoopControl) {
+                        var lct = compressor.loopcontrol_target(stat);
+                        if ((stat instanceof AST_Break
+                             && !(lct instanceof AST_IterationStatement)
+                             && loop_body(lct) === self) || (stat instanceof AST_Continue
+                                                             && loop_body(lct) === self)) {
+                            if (stat.label) {
+                                remove(stat.label.thedef.references, stat);
+                            }
+                        } else {
+                            a.push(stat);
+                        }
+                    } else {
+                        a.push(stat);
+                    }
+                    if (aborts(stat)) has_quit = true;
+                }
+                return a;
+            }, []);
+            CHANGED = statements.length != orig;
+            return statements;
+        };
+
+        function sequencesize(statements, compressor) {
+            if (statements.length < 2) return statements;
+            var seq = [], ret = [];
+            function push_seq() {
+                seq = AST_Seq.from_array(seq);
+                if (seq) ret.push(make_node(AST_SimpleStatement, seq, {
+                    body: seq
+                }));
+                seq = [];
+            };
+            statements.forEach(function(stat){
+                if (stat instanceof AST_SimpleStatement) {
+                    if (seqLength(seq) >= compressor.sequences_limit) push_seq();
+                    var body = stat.body;
+                    if (seq.length > 0) body = body.drop_side_effect_free(compressor);
+                    if (body) seq.push(body);
+                } else {
+                    push_seq();
+                    ret.push(stat);
+                }
+            });
+            push_seq();
+            ret = sequencesize_2(ret, compressor);
+            CHANGED = ret.length != statements.length;
+            return ret;
+        };
+
+        function seqLength(a) {
+            for (var len = 0, i = 0; i < a.length; ++i) {
+                var stat = a[i];
+                if (stat instanceof AST_Seq) {
+                    len += stat.len();
+                } else {
+                    len++;
+                }
+            }
+            return len;
+        };
+
+        function sequencesize_2(statements, compressor) {
+            function cons_seq(right) {
+                ret.pop();
+                var left = prev.body;
+                if (left instanceof AST_Seq) {
+                    left.add(right);
+                } else {
+                    left = AST_Seq.cons(left, right);
+                }
+                return left.transform(compressor);
+            };
+            var ret = [], prev = null;
+            statements.forEach(function(stat){
+                if (prev) {
+                    if (stat instanceof AST_For) {
+                        var opera = {};
+                        try {
+                            prev.body.walk(new TreeWalker(function(node){
+                                if (node instanceof AST_Binary && node.operator == "in")
+                                    throw opera;
+                            }));
+                            if (stat.init && !(stat.init instanceof AST_Definitions)) {
+                                stat.init = cons_seq(stat.init);
+                            }
+                            else if (!stat.init) {
+                                stat.init = prev.body.drop_side_effect_free(compressor);
+                                ret.pop();
+                            }
+                        } catch(ex) {
+                            if (ex !== opera) throw ex;
+                        }
+                    }
+                    else if (stat instanceof AST_If) {
+                        stat.condition = cons_seq(stat.condition);
+                    }
+                    else if (stat instanceof AST_With) {
+                        stat.expression = cons_seq(stat.expression);
+                    }
+                    else if (stat instanceof AST_Exit && stat.value) {
+                        stat.value = cons_seq(stat.value);
+                    }
+                    else if (stat instanceof AST_Exit) {
+                        stat.value = cons_seq(make_node(AST_Undefined, stat).transform(compressor));
+                    }
+                    else if (stat instanceof AST_Switch) {
+                        stat.expression = cons_seq(stat.expression);
+                    }
+                }
+                ret.push(stat);
+                prev = stat instanceof AST_SimpleStatement ? stat : null;
+            });
+            return ret;
+        };
+
+        function join_consecutive_vars(statements, compressor) {
+            var prev = null;
+            return statements.reduce(function(a, stat){
+                if (stat instanceof AST_Definitions && prev && prev.TYPE == stat.TYPE) {
+                    prev.definitions = prev.definitions.concat(stat.definitions);
+                    CHANGED = true;
+                }
+                else if (stat instanceof AST_For
+                         && prev instanceof AST_Var
+                         && (!stat.init || stat.init.TYPE == prev.TYPE)) {
+                    CHANGED = true;
+                    a.pop();
+                    if (stat.init) {
+                        stat.init.definitions = prev.definitions.concat(stat.init.definitions);
+                    } else {
+                        stat.init = prev;
+                    }
+                    a.push(stat);
+                    prev = stat;
+                }
+                else {
+                    prev = stat;
+                    a.push(stat);
+                }
+                return a;
+            }, []);
+        };
+
+    };
+
+    function extract_functions_from_statement_array(statements) {
+        var funs = [];
+        for (var i = statements.length - 1; i >= 0; --i) {
+            var stat = statements[i];
+            if (stat instanceof AST_Defun) {
+                statements.splice(i, 1);
+                funs.unshift(stat);
+            }
+        }
+        return funs;
+    }
+
+    function extract_declarations_from_unreachable_code(compressor, stat, target) {
+        if (!(stat instanceof AST_Defun)) {
+            compressor.warn("Dropping unreachable code [{file}:{line},{col}]", stat.start);
+        }
+        stat.walk(new TreeWalker(function(node){
+            if (node instanceof AST_Definitions) {
+                compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]", node.start);
+                node.remove_initializers();
+                target.push(node);
+                return true;
+            }
+            if (node instanceof AST_Defun) {
+                target.push(node);
+                return true;
+            }
+            if (node instanceof AST_Scope) {
+                return true;
+            }
+        }));
+    };
+
+    function is_undefined(node, compressor) {
+        return node.is_undefined
+            || node instanceof AST_Undefined
+            || node instanceof AST_UnaryPrefix
+                && node.operator == "void"
+                && !node.expression.has_side_effects(compressor);
+    }
+
+    // may_eq_null()
+    // returns true if this node may evaluate to null or undefined
+    (function(def) {
+        AST_Node.DEFMETHOD("may_eq_null", function(compressor) {
+            var pure_getters = compressor.option("pure_getters");
+            return !pure_getters || this._eq_null(pure_getters);
+        });
+
+        function is_strict(pure_getters) {
+            return /strict/.test(pure_getters);
+        }
+
+        def(AST_Node, is_strict);
+        def(AST_Null, return_true);
+        def(AST_Undefined, return_true);
+        def(AST_Constant, return_false);
+        def(AST_Array, return_false);
+        def(AST_Object, return_false);
+        def(AST_Function, return_false);
+        def(AST_UnaryPostfix, return_false);
+        def(AST_UnaryPrefix, function() {
+            return this.operator == "void";
+        });
+        def(AST_Binary, function(pure_getters) {
+            switch (this.operator) {
+              case "&&":
+                return this.left._eq_null(pure_getters);
+              case "||":
+                return this.left._eq_null(pure_getters)
+                    && this.right._eq_null(pure_getters);
+              default:
+                return false;
+            }
+        })
+        def(AST_Assign, function(pure_getters) {
+            return this.operator == "="
+                && this.right._eq_null(pure_getters);
+        })
+        def(AST_Conditional, function(pure_getters) {
+            return this.consequent._eq_null(pure_getters)
+                || this.alternative._eq_null(pure_getters);
+        })
+        def(AST_Seq, function(pure_getters) {
+            return this.cdr._eq_null(pure_getters);
+        });
+        def(AST_SymbolRef, function(pure_getters) {
+            if (this.is_undefined) return true;
+            if (!is_strict(pure_getters)) return false;
+            var fixed = this.fixed_value();
+            return !fixed || fixed._eq_null(pure_getters);
+        });
+    })(function(node, func) {
+        node.DEFMETHOD("_eq_null", func);
+    });
+
+    /* -----[ boolean/negation helpers ]----- */
+
+    // methods to determine whether an expression has a boolean result type
+    (function (def){
+        var unary_bool = [ "!", "delete" ];
+        var binary_bool = [ "in", "instanceof", "==", "!=", "===", "!==", "<", "<=", ">=", ">" ];
+        def(AST_Node, return_false);
+        def(AST_UnaryPrefix, function(){
+            return member(this.operator, unary_bool);
+        });
+        def(AST_Binary, function(){
+            return member(this.operator, binary_bool) ||
+                ( (this.operator == "&&" || this.operator == "||") &&
+                  this.left.is_boolean() && this.right.is_boolean() );
+        });
+        def(AST_Conditional, function(){
+            return this.consequent.is_boolean() && this.alternative.is_boolean();
+        });
+        def(AST_Assign, function(){
+            return this.operator == "=" && this.right.is_boolean();
+        });
+        def(AST_Seq, function(){
+            return this.cdr.is_boolean();
+        });
+        def(AST_True, return_true);
+        def(AST_False, return_true);
+    })(function(node, func){
+        node.DEFMETHOD("is_boolean", func);
+    });
+
+    // methods to determine if an expression has a numeric result type
+    (function (def){
+        def(AST_Node, return_false);
+        def(AST_Number, return_true);
+        var unary = makePredicate("+ - ~ ++ --");
+        def(AST_Unary, function(){
+            return unary(this.operator);
+        });
+        var binary = makePredicate("- * / % & | ^ << >> >>>");
+        def(AST_Binary, function(compressor){
+            return binary(this.operator) || this.operator == "+"
+                && this.left.is_number(compressor)
+                && this.right.is_number(compressor);
+        });
+        def(AST_Assign, function(compressor){
+            return binary(this.operator.slice(0, -1))
+                || this.operator == "=" && this.right.is_number(compressor);
+        });
+        def(AST_Seq, function(compressor){
+            return this.cdr.is_number(compressor);
+        });
+        def(AST_Conditional, function(compressor){
+            return this.consequent.is_number(compressor) && this.alternative.is_number(compressor);
+        });
+    })(function(node, func){
+        node.DEFMETHOD("is_number", func);
+    });
+
+    // methods to determine if an expression has a string result type
+    (function (def){
+        def(AST_Node, return_false);
+        def(AST_String, return_true);
+        def(AST_UnaryPrefix, function(){
+            return this.operator == "typeof";
+        });
+        def(AST_Binary, function(compressor){
+            return this.operator == "+" &&
+                (this.left.is_string(compressor) || this.right.is_string(compressor));
+        });
+        def(AST_Assign, function(compressor){
+            return (this.operator == "=" || this.operator == "+=") && this.right.is_string(compressor);
+        });
+        def(AST_Seq, function(compressor){
+            return this.cdr.is_string(compressor);
+        });
+        def(AST_Conditional, function(compressor){
+            return this.consequent.is_string(compressor) && this.alternative.is_string(compressor);
+        });
+    })(function(node, func){
+        node.DEFMETHOD("is_string", func);
+    });
+
+    var unary_side_effects = makePredicate("delete ++ --");
+
+    function is_lhs(node, parent) {
+        if (parent instanceof AST_Unary && unary_side_effects(parent.operator)) return parent.expression;
+        if (parent instanceof AST_Assign && parent.left === node) return node;
+    }
+
+    (function (def){
+        AST_Node.DEFMETHOD("resolve_defines", function(compressor) {
+            if (!compressor.option("global_defs")) return;
+            var def = this._find_defs(compressor, "");
+            if (def) {
+                var node, parent = this, level = 0;
+                do {
+                    node = parent;
+                    parent = compressor.parent(level++);
+                } while (parent instanceof AST_PropAccess && parent.expression === node);
+                if (is_lhs(node, parent)) {
+                    compressor.warn('global_defs ' + this.print_to_string() + ' redefined [{file}:{line},{col}]', this.start);
+                } else {
+                    return def;
+                }
+            }
+        });
+        function to_node(value, orig) {
+            if (value instanceof AST_Node) return make_node(value.CTOR, orig, value);
+            if (Array.isArray(value)) return make_node(AST_Array, orig, {
+                elements: value.map(function(value) {
+                    return to_node(value, orig);
+                })
+            });
+            if (value && typeof value == "object") {
+                var props = [];
+                for (var key in value) {
+                    props.push(make_node(AST_ObjectKeyVal, orig, {
+                        key: key,
+                        value: to_node(value[key], orig)
+                    }));
+                }
+                return make_node(AST_Object, orig, {
+                    properties: props
+                });
+            }
+            return make_node_from_constant(value, orig);
+        }
+        def(AST_Node, noop);
+        def(AST_Dot, function(compressor, suffix){
+            return this.expression._find_defs(compressor, "." + this.property + suffix);
+        });
+        def(AST_SymbolRef, function(compressor, suffix){
+            if (!this.global()) return;
+            var name;
+            var defines = compressor.option("global_defs");
+            if (defines && HOP(defines, (name = this.name + suffix))) {
+                var node = to_node(defines[name], this);
+                var top = compressor.find_parent(AST_Toplevel);
+                node.walk(new TreeWalker(function(node) {
+                    if (node instanceof AST_SymbolRef) {
+                        node.scope = top;
+                        node.thedef = top.def_global(node);
+                    }
+                }));
+                return node;
+            }
+        });
+    })(function(node, func){
+        node.DEFMETHOD("_find_defs", func);
+    });
+
+    function best_of_expression(ast1, ast2) {
+        return ast1.print_to_string().length >
+            ast2.print_to_string().length
+            ? ast2 : ast1;
+    }
+
+    function best_of_statement(ast1, ast2) {
+        return best_of_expression(make_node(AST_SimpleStatement, ast1, {
+            body: ast1
+        }), make_node(AST_SimpleStatement, ast2, {
+            body: ast2
+        })).body;
+    }
+
+    function best_of(compressor, ast1, ast2) {
+        return (first_in_statement(compressor) ? best_of_statement : best_of_expression)(ast1, ast2);
+    }
+
+    // methods to evaluate a constant expression
+    (function (def){
+        // If the node has been successfully reduced to a constant,
+        // then its value is returned; otherwise the element itself
+        // is returned.
+        // They can be distinguished as constant value is never a
+        // descendant of AST_Node.
+        AST_Node.DEFMETHOD("evaluate", function(compressor){
+            if (!compressor.option("evaluate")) return this;
+            try {
+                var val = this._eval(compressor);
+                return !val || val instanceof RegExp || typeof val != "object" ? val : this;
+            } catch(ex) {
+                if (ex !== def) throw ex;
+                return this;
+            }
+        });
+        var unaryPrefix = makePredicate("! ~ - + void");
+        AST_Node.DEFMETHOD("is_constant", function(){
+            // Accomodate when compress option evaluate=false
+            // as well as the common constant expressions !0 and -1
+            if (this instanceof AST_Constant) {
+                return !(this instanceof AST_RegExp);
+            } else {
+                return this instanceof AST_UnaryPrefix
+                    && this.expression instanceof AST_Constant
+                    && unaryPrefix(this.operator);
+            }
+        });
+        // Obtain the constant value of an expression already known to be constant.
+        // Result only valid iff this.is_constant() is true.
+        AST_Node.DEFMETHOD("constant_value", function(compressor){
+            // Accomodate when option evaluate=false.
+            if (this instanceof AST_Constant && !(this instanceof AST_RegExp)) {
+                return this.value;
+            }
+            // Accomodate the common constant expressions !0 and -1 when option evaluate=false.
+            if (this instanceof AST_UnaryPrefix
+                && this.expression instanceof AST_Constant) switch (this.operator) {
+              case "!":
+                return !this.expression.value;
+              case "~":
+                return ~this.expression.value;
+              case "-":
+                return -this.expression.value;
+              case "+":
+                return +this.expression.value;
+              default:
+                throw new Error(string_template("Cannot evaluate unary expression {value}", {
+                    value: this.print_to_string()
+                }));
+            }
+            var result = this.evaluate(compressor);
+            if (result !== this) {
+                return result;
+            }
+            throw new Error(string_template("Cannot evaluate constant [{file}:{line},{col}]", this.start));
+        });
+        def(AST_Statement, function(){
+            throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]", this.start));
+        });
+        def(AST_Lambda, function(){
+            throw def;
+        });
+        function ev(node, compressor) {
+            if (!compressor) throw new Error("Compressor must be passed");
+
+            return node._eval(compressor);
+        };
+        def(AST_Node, function(){
+            throw def;          // not constant
+        });
+        def(AST_Constant, function(){
+            return this.getValue();
+        });
+        def(AST_Array, function(compressor){
+            if (compressor.option("unsafe")) {
+                return this.elements.map(function(element) {
+                    return ev(element, compressor);
+                });
+            }
+            throw def;
+        });
+        def(AST_Object, function(compressor){
+            if (compressor.option("unsafe")) {
+                var val = {};
+                for (var i = 0, len = this.properties.length; i < len; i++) {
+                    var prop = this.properties[i];
+                    var key = prop.key;
+                    if (key instanceof AST_Symbol) {
+                        key = key.name;
+                    } else if (key instanceof AST_Node) {
+                        key = ev(key, compressor);
+                    }
+                    if (typeof Object.prototype[key] === 'function') {
+                        throw def;
+                    }
+                    val[key] = ev(prop.value, compressor);
+                }
+                return val;
+            }
+            throw def;
+        });
+        def(AST_UnaryPrefix, function(compressor){
+            var e = this.expression;
+            switch (this.operator) {
+              case "!": return !ev(e, compressor);
+              case "typeof":
+                // Function would be evaluated to an array and so typeof would
+                // incorrectly return 'object'. Hence making is a special case.
+                if (e instanceof AST_Function) return typeof function(){};
+
+                e = ev(e, compressor);
+
+                // typeof <RegExp> returns "object" or "function" on different platforms
+                // so cannot evaluate reliably
+                if (e instanceof RegExp) throw def;
+
+                return typeof e;
+              case "void": return void ev(e, compressor);
+              case "~": return ~ev(e, compressor);
+              case "-": return -ev(e, compressor);
+              case "+": return +ev(e, compressor);
+            }
+            throw def;
+        });
+        def(AST_Binary, function(c){
+            var left = this.left, right = this.right, result;
+            switch (this.operator) {
+              case "&&"  : result = ev(left, c) &&  ev(right, c); break;
+              case "||"  : result = ev(left, c) ||  ev(right, c); break;
+              case "|"   : result = ev(left, c) |   ev(right, c); break;
+              case "&"   : result = ev(left, c) &   ev(right, c); break;
+              case "^"   : result = ev(left, c) ^   ev(right, c); break;
+              case "+"   : result = ev(left, c) +   ev(right, c); break;
+              case "*"   : result = ev(left, c) *   ev(right, c); break;
+              case "/"   : result = ev(left, c) /   ev(right, c); break;
+              case "%"   : result = ev(left, c) %   ev(right, c); break;
+              case "-"   : result = ev(left, c) -   ev(right, c); break;
+              case "<<"  : result = ev(left, c) <<  ev(right, c); break;
+              case ">>"  : result = ev(left, c) >>  ev(right, c); break;
+              case ">>>" : result = ev(left, c) >>> ev(right, c); break;
+              case "=="  : result = ev(left, c) ==  ev(right, c); break;
+              case "===" : result = ev(left, c) === ev(right, c); break;
+              case "!="  : result = ev(left, c) !=  ev(right, c); break;
+              case "!==" : result = ev(left, c) !== ev(right, c); break;
+              case "<"   : result = ev(left, c) <   ev(right, c); break;
+              case "<="  : result = ev(left, c) <=  ev(right, c); break;
+              case ">"   : result = ev(left, c) >   ev(right, c); break;
+              case ">="  : result = ev(left, c) >=  ev(right, c); break;
+              default:
+                  throw def;
+            }
+            if (isNaN(result) && c.find_parent(AST_With)) {
+                // leave original expression as is
+                throw def;
+            }
+            return result;
+        });
+        def(AST_Conditional, function(compressor){
+            return ev(this.condition, compressor)
+                ? ev(this.consequent, compressor)
+                : ev(this.alternative, compressor);
+        });
+        def(AST_SymbolRef, function(compressor){
+            if (this._evaluating) throw def;
+            this._evaluating = true;
+            try {
+                var fixed = this.fixed_value();
+                if (compressor.option("reduce_vars") && fixed) {
+                    if (compressor.option("unsafe")) {
+                        if (!HOP(fixed, "_evaluated")) {
+                            fixed._evaluated = ev(fixed, compressor);
+                        }
+                        return fixed._evaluated;
+                    }
+                    return ev(fixed, compressor);
+                }
+            } finally {
+                this._evaluating = false;
+            }
+            throw def;
+        });
+        def(AST_PropAccess, function(compressor){
+            if (compressor.option("unsafe")) {
+                var key = this.property;
+                if (key instanceof AST_Node) {
+                    key = ev(key, compressor);
+                }
+                var val = ev(this.expression, compressor);
+                if (val && HOP(val, key)) {
+                    return val[key];
+                }
+            }
+            throw def;
+        });
+    })(function(node, func){
+        node.DEFMETHOD("_eval", func);
+    });
+
+    // method to negate an expression
+    (function(def){
+        function basic_negation(exp) {
+            return make_node(AST_UnaryPrefix, exp, {
+                operator: "!",
+                expression: exp
+            });
+        }
+        function best(orig, alt, first_in_statement) {
+            var negated = basic_negation(orig);
+            if (first_in_statement) {
+                var stat = make_node(AST_SimpleStatement, alt, {
+                    body: alt
+                });
+                return best_of_expression(negated, stat) === stat ? alt : negated;
+            }
+            return best_of_expression(negated, alt);
+        }
+        def(AST_Node, function(){
+            return basic_negation(this);
+        });
+        def(AST_Statement, function(){
+            throw new Error("Cannot negate a statement");
+        });
+        def(AST_Function, function(){
+            return basic_negation(this);
+        });
+        def(AST_UnaryPrefix, function(){
+            if (this.operator == "!")
+                return this.expression;
+            return basic_negation(this);
+        });
+        def(AST_Seq, function(compressor){
+            var self = this.clone();
+            self.cdr = self.cdr.negate(compressor);
+            return self;
+        });
+        def(AST_Conditional, function(compressor, first_in_statement){
+            var self = this.clone();
+            self.consequent = self.consequent.negate(compressor);
+            self.alternative = self.alternative.negate(compressor);
+            return best(this, self, first_in_statement);
+        });
+        def(AST_Binary, function(compressor, first_in_statement){
+            var self = this.clone(), op = this.operator;
+            if (compressor.option("unsafe_comps")) {
+                switch (op) {
+                  case "<=" : self.operator = ">"  ; return self;
+                  case "<"  : self.operator = ">=" ; return self;
+                  case ">=" : self.operator = "<"  ; return self;
+                  case ">"  : self.operator = "<=" ; return self;
+                }
+            }
+            switch (op) {
+              case "==" : self.operator = "!="; return self;
+              case "!=" : self.operator = "=="; return self;
+              case "===": self.operator = "!=="; return self;
+              case "!==": self.operator = "==="; return self;
+              case "&&":
+                self.operator = "||";
+                self.left = self.left.negate(compressor, first_in_statement);
+                self.right = self.right.negate(compressor);
+                return best(this, self, first_in_statement);
+              case "||":
+                self.operator = "&&";
+                self.left = self.left.negate(compressor, first_in_statement);
+                self.right = self.right.negate(compressor);
+                return best(this, self, first_in_statement);
+            }
+            return basic_negation(this);
+        });
+    })(function(node, func){
+        node.DEFMETHOD("negate", function(compressor, first_in_statement){
+            return func.call(this, compressor, first_in_statement);
+        });
+    });
+
+    AST_Call.DEFMETHOD("has_pure_annotation", function(compressor) {
+        if (!compressor.option("side_effects")) return false;
+        if (this.pure !== undefined) return this.pure;
+        var pure = false;
+        var comments, last_comment;
+        if (this.start
+            && (comments = this.start.comments_before)
+            && comments.length
+            && /[@#]__PURE__/.test((last_comment = comments[comments.length - 1]).value)) {
+            pure = last_comment;
+        }
+        return this.pure = pure;
+    });
+
+    // determine if expression has side effects
+    (function(def){
+        def(AST_Node, return_true);
+
+        def(AST_EmptyStatement, return_false);
+        def(AST_Constant, return_false);
+        def(AST_This, return_false);
+
+        def(AST_Call, function(compressor){
+            if (!this.has_pure_annotation(compressor) && compressor.pure_funcs(this)) return true;
+            for (var i = this.args.length; --i >= 0;) {
+                if (this.args[i].has_side_effects(compressor))
+                    return true;
+            }
+            return false;
+        });
+
+        function any(list, compressor) {
+            for (var i = list.length; --i >= 0;)
+                if (list[i].has_side_effects(compressor))
+                    return true;
+            return false;
+        }
+
+        def(AST_Block, function(compressor){
+            return any(this.body, compressor);
+        });
+        def(AST_Switch, function(compressor){
+            return this.expression.has_side_effects(compressor)
+                || any(this.body, compressor);
+        });
+        def(AST_Case, function(compressor){
+            return this.expression.has_side_effects(compressor)
+                || any(this.body, compressor);
+        });
+        def(AST_Try, function(compressor){
+            return any(this.body, compressor)
+                || this.bcatch && this.bcatch.has_side_effects(compressor)
+                || this.bfinally && this.bfinally.has_side_effects(compressor);
+        });
+        def(AST_If, function(compressor){
+            return this.condition.has_side_effects(compressor)
+                || this.body && this.body.has_side_effects(compressor)
+                || this.alternative && this.alternative.has_side_effects(compressor);
+        });
+        def(AST_LabeledStatement, function(compressor){
+            return this.body.has_side_effects(compressor);
+        });
+        def(AST_SimpleStatement, function(compressor){
+            return this.body.has_side_effects(compressor);
+        });
+        def(AST_Defun, return_true);
+        def(AST_Function, return_false);
+        def(AST_Binary, function(compressor){
+            return this.left.has_side_effects(compressor)
+                || this.right.has_side_effects(compressor);
+        });
+        def(AST_Assign, return_true);
+        def(AST_Conditional, function(compressor){
+            return this.condition.has_side_effects(compressor)
+                || this.consequent.has_side_effects(compressor)
+                || this.alternative.has_side_effects(compressor);
+        });
+        def(AST_Unary, function(compressor){
+            return unary_side_effects(this.operator)
+                || this.expression.has_side_effects(compressor);
+        });
+        def(AST_SymbolRef, function(compressor){
+            return this.undeclared();
+        });
+        def(AST_Object, function(compressor){
+            return any(this.properties, compressor);
+        });
+        def(AST_ObjectProperty, function(compressor){
+            return this.value.has_side_effects(compressor);
+        });
+        def(AST_Array, function(compressor){
+            return any(this.elements, compressor);
+        });
+        def(AST_Dot, function(compressor){
+            return this.expression.may_eq_null(compressor)
+                || this.expression.has_side_effects(compressor);
+        });
+        def(AST_Sub, function(compressor){
+            return this.expression.may_eq_null(compressor)
+                || this.expression.has_side_effects(compressor)
+                || this.property.has_side_effects(compressor);
+        });
+        def(AST_Seq, function(compressor){
+            return this.car.has_side_effects(compressor)
+                || this.cdr.has_side_effects(compressor);
+        });
+    })(function(node, func){
+        node.DEFMETHOD("has_side_effects", func);
+    });
+
+    // tell me if a statement aborts
+    function aborts(thing) {
+        return thing && thing.aborts();
+    };
+    (function(def){
+        def(AST_Statement, return_null);
+        def(AST_Jump, return_this);
+        function block_aborts(){
+            var n = this.body.length;
+            return n > 0 && aborts(this.body[n - 1]);
+        };
+        def(AST_BlockStatement, block_aborts);
+        def(AST_SwitchBranch, block_aborts);
+        def(AST_If, function(){
+            return this.alternative && aborts(this.body) && aborts(this.alternative) && this;
+        });
+    })(function(node, func){
+        node.DEFMETHOD("aborts", func);
+    });
+
+    /* -----[ optimizers ]----- */
+
+    OPT(AST_Directive, function(self, compressor){
+        if (compressor.has_directive(self.value) !== self) {
+            return make_node(AST_EmptyStatement, self);
+        }
+        return self;
+    });
+
+    OPT(AST_Debugger, function(self, compressor){
+        if (compressor.option("drop_debugger"))
+            return make_node(AST_EmptyStatement, self);
+        return self;
+    });
+
+    OPT(AST_LabeledStatement, function(self, compressor){
+        if (self.body instanceof AST_Break
+            && compressor.loopcontrol_target(self.body) === self.body) {
+            return make_node(AST_EmptyStatement, self);
+        }
+        return self.label.references.length == 0 ? self.body : self;
+    });
+
+    OPT(AST_Block, function(self, compressor){
+        self.body = tighten_body(self.body, compressor);
+        return self;
+    });
+
+    OPT(AST_BlockStatement, function(self, compressor){
+        self.body = tighten_body(self.body, compressor);
+        switch (self.body.length) {
+          case 1: return self.body[0];
+          case 0: return make_node(AST_EmptyStatement, self);
+        }
+        return self;
+    });
+
+    AST_Scope.DEFMETHOD("drop_unused", function(compressor){
+        var self = this;
+        if (compressor.has_directive("use asm")) return self;
+        var toplevel = compressor.option("toplevel");
+        if (compressor.option("unused")
+            && (!(self instanceof AST_Toplevel) || toplevel)
+            && !self.uses_eval
+            && !self.uses_with) {
+            var assign_as_unused = !/keep_assign/.test(compressor.option("unused"));
+            var drop_funcs = /funcs/.test(toplevel);
+            var drop_vars = /vars/.test(toplevel);
+            if (!(self instanceof AST_Toplevel) || toplevel == true) {
+                drop_funcs = drop_vars = true;
+            }
+            var in_use = [];
+            var in_use_ids = Object.create(null); // avoid expensive linear scans of in_use
+            if (self instanceof AST_Toplevel && compressor.top_retain) {
+                self.variables.each(function(def) {
+                    if (compressor.top_retain(def) && !(def.id in in_use_ids)) {
+                        in_use_ids[def.id] = true;
+                        in_use.push(def);
+                    }
+                });
+            }
+            var initializations = new Dictionary();
+            // pass 1: find out which symbols are directly used in
+            // this scope (not in nested scopes).
+            var scope = this;
+            var tw = new TreeWalker(function(node, descend){
+                if (node !== self) {
+                    if (node instanceof AST_Defun) {
+                        if (!drop_funcs && scope === self) {
+                            var node_def = node.name.definition();
+                            if (!(node_def.id in in_use_ids)) {
+                                in_use_ids[node_def.id] = true;
+                                in_use.push(node_def);
+                            }
+                        }
+                        initializations.add(node.name.name, node);
+                        return true; // don't go in nested scopes
+                    }
+                    if (node instanceof AST_Definitions && scope === self) {
+                        node.definitions.forEach(function(def){
+                            if (!drop_vars) {
+                                var node_def = def.name.definition();
+                                if (!(node_def.id in in_use_ids)) {
+                                    in_use_ids[node_def.id] = true;
+                                    in_use.push(node_def);
+                                }
+                            }
+                            if (def.value) {
+                                initializations.add(def.name.name, def.value);
+                                if (def.value.has_side_effects(compressor)) {
+                                    def.value.walk(tw);
+                                }
+                            }
+                        });
+                        return true;
+                    }
+                    if (assign_as_unused
+                        && node instanceof AST_Assign
+                        && node.operator == "="
+                        && node.left instanceof AST_SymbolRef
+                        && scope === self) {
+                        node.right.walk(tw);
+                        return true;
+                    }
+                    if (node instanceof AST_SymbolRef) {
+                        var node_def = node.definition();
+                        if (!(node_def.id in in_use_ids)) {
+                            in_use_ids[node_def.id] = true;
+                            in_use.push(node_def);
+                        }
+                        return true;
+                    }
+                    if (node instanceof AST_Scope) {
+                        var save_scope = scope;
+                        scope = node;
+                        descend();
+                        scope = save_scope;
+                        return true;
+                    }
+                }
+            });
+            self.walk(tw);
+            // pass 2: for every used symbol we need to walk its
+            // initialization code to figure out if it uses other
+            // symbols (that may not be in_use).
+            for (var i = 0; i < in_use.length; ++i) {
+                in_use[i].orig.forEach(function(decl){
+                    // undeclared globals will be instanceof AST_SymbolRef
+                    var init = initializations.get(decl.name);
+                    if (init) init.forEach(function(init){
+                        var tw = new TreeWalker(function(node){
+                            if (node instanceof AST_SymbolRef) {
+                                var node_def = node.definition();
+                                if (!(node_def.id in in_use_ids)) {
+                                    in_use_ids[node_def.id] = true;
+                                    in_use.push(node_def);
+                                }
+                            }
+                        });
+                        init.walk(tw);
+                    });
+                });
+            }
+            // pass 3: we should drop declarations not in_use
+            var tt = new TreeTransformer(
+                function before(node, descend, in_list) {
+                    if (node instanceof AST_Function
+                        && node.name
+                        && !compressor.option("keep_fnames")) {
+                        var def = node.name.definition();
+                        // any declarations with same name will overshadow
+                        // name of this anonymous function and can therefore
+                        // never be used anywhere
+                        if (!(def.id in in_use_ids) || def.orig.length > 1)
+                            node.name = null;
+                    }
+                    if (node instanceof AST_Lambda && !(node instanceof AST_Accessor)) {
+                        var trim = !compressor.option("keep_fargs");
+                        for (var a = node.argnames, i = a.length; --i >= 0;) {
+                            var sym = a[i];
+                            if (!(sym.definition().id in in_use_ids)) {
+                                sym.__unused = true;
+                                if (trim) {
+                                    a.pop();
+                                    compressor[sym.unreferenced() ? "warn" : "info"]("Dropping unused function argument {name} [{file}:{line},{col}]", {
+                                        name : sym.name,
+                                        file : sym.start.file,
+                                        line : sym.start.line,
+                                        col  : sym.start.col
+                                    });
+                                }
+                            }
+                            else {
+                                trim = false;
+                            }
+                        }
+                    }
+                    if (drop_funcs && node instanceof AST_Defun && node !== self) {
+                        if (!(node.name.definition().id in in_use_ids)) {
+                            compressor[node.name.unreferenced() ? "warn" : "info"]("Dropping unused function {name} [{file}:{line},{col}]", {
+                                name : node.name.name,
+                                file : node.name.start.file,
+                                line : node.name.start.line,
+                                col  : node.name.start.col
+                            });
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        return node;
+                    }
+                    if (drop_vars && node instanceof AST_Definitions && !(tt.parent() instanceof AST_ForIn)) {
+                        var def = node.definitions.filter(function(def){
+                            if (def.value) def.value = def.value.transform(tt);
+                            var sym = def.name.definition();
+                            if (sym.id in in_use_ids) return true;
+                            if (sym.orig[0] instanceof AST_SymbolCatch) {
+                                def.value = def.value && def.value.drop_side_effect_free(compressor);
+                                return true;
+                            }
+                            var w = {
+                                name : def.name.name,
+                                file : def.name.start.file,
+                                line : def.name.start.line,
+                                col  : def.name.start.col
+                            };
+                            if (def.value && (def._unused_side_effects = def.value.drop_side_effect_free(compressor))) {
+                                compressor.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]", w);
+                                return true;
+                            }
+                            compressor[def.name.unreferenced() ? "warn" : "info"]("Dropping unused variable {name} [{file}:{line},{col}]", w);
+                            return false;
+                        });
+                        // place uninitialized names at the start
+                        def = mergeSort(def, function(a, b){
+                            if (!a.value && b.value) return -1;
+                            if (!b.value && a.value) return 1;
+                            return 0;
+                        });
+                        // for unused names whose initialization has
+                        // side effects, we can cascade the init. code
+                        // into the next one, or next statement.
+                        var side_effects = [];
+                        for (var i = 0; i < def.length;) {
+                            var x = def[i];
+                            if (x._unused_side_effects) {
+                                side_effects.push(x._unused_side_effects);
+                                def.splice(i, 1);
+                            } else {
+                                if (side_effects.length > 0) {
+                                    side_effects.push(x.value);
+                                    x.value = AST_Seq.from_array(side_effects);
+                                    side_effects = [];
+                                }
+                                ++i;
+                            }
+                        }
+                        if (side_effects.length > 0) {
+                            side_effects = make_node(AST_BlockStatement, node, {
+                                body: [ make_node(AST_SimpleStatement, node, {
+                                    body: AST_Seq.from_array(side_effects)
+                                }) ]
+                            });
+                        } else {
+                            side_effects = null;
+                        }
+                        if (def.length == 0 && !side_effects) {
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        if (def.length == 0) {
+                            return in_list ? MAP.splice(side_effects.body) : side_effects;
+                        }
+                        node.definitions = def;
+                        if (side_effects) {
+                            side_effects.body.unshift(node);
+                            return in_list ? MAP.splice(side_effects.body) : side_effects;
+                        }
+                        return node;
+                    }
+                    if (drop_vars && assign_as_unused
+                        && node instanceof AST_Assign
+                        && node.operator == "="
+                        && node.left instanceof AST_SymbolRef) {
+                        var def = node.left.definition();
+                        if (!(def.id in in_use_ids)
+                            && self.variables.get(def.name) === def) {
+                            return maintain_this_binding(tt.parent(), node, node.right.transform(tt));
+                        }
+                    }
+                    if (node instanceof AST_For) {
+                        descend(node, this);
+
+                        if (node.init instanceof AST_BlockStatement) {
+                            // certain combination of unused name + side effect leads to:
+                            //    https://github.com/mishoo/UglifyJS2/issues/44
+                            // that's an invalid AST.
+                            // We fix it at this stage by moving the `var` outside the `for`.
+
+                            var body = node.init.body.slice(0, -1);
+                            node.init = node.init.body.slice(-1)[0].body;
+                            body.push(node);
+
+                            return in_list ? MAP.splice(body) : make_node(AST_BlockStatement, node, {
+                                body: body
+                            });
+                        } else if (is_empty(node.init)) {
+                            node.init = null;
+                            return node;
+                        }
+                    }
+                    if (node instanceof AST_Scope && node !== self)
+                        return node;
+                }
+            );
+            self.transform(tt);
+        }
+    });
+
+    AST_Scope.DEFMETHOD("hoist_declarations", function(compressor){
+        var self = this;
+        if (compressor.has_directive("use asm")) return self;
+        var hoist_funs = compressor.option("hoist_funs");
+        var hoist_vars = compressor.option("hoist_vars");
+        if (hoist_funs || hoist_vars) {
+            var dirs = [];
+            var hoisted = [];
+            var vars = new Dictionary(), vars_found = 0, var_decl = 0;
+            // let's count var_decl first, we seem to waste a lot of
+            // space if we hoist `var` when there's only one.
+            self.walk(new TreeWalker(function(node){
+                if (node instanceof AST_Scope && node !== self)
+                    return true;
+                if (node instanceof AST_Var) {
+                    ++var_decl;
+                    return true;
+                }
+            }));
+            hoist_vars = hoist_vars && var_decl > 1;
+            var tt = new TreeTransformer(
+                function before(node) {
+                    if (node !== self) {
+                        if (node instanceof AST_Directive) {
+                            dirs.push(node);
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        if (node instanceof AST_Defun && hoist_funs) {
+                            hoisted.push(node);
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        if (node instanceof AST_Var && hoist_vars) {
+                            node.definitions.forEach(function(def){
+                                vars.set(def.name.name, def);
+                                ++vars_found;
+                            });
+                            var seq = node.to_assignments(compressor);
+                            var p = tt.parent();
+                            if (p instanceof AST_ForIn && p.init === node) {
+                                if (seq == null) {
+                                    var def = node.definitions[0].name;
+                                    return make_node(AST_SymbolRef, def, def);
+                                }
+                                return seq;
+                            }
+                            if (p instanceof AST_For && p.init === node) {
+                                return seq;
+                            }
+                            if (!seq) return make_node(AST_EmptyStatement, node);
+                            return make_node(AST_SimpleStatement, node, {
+                                body: seq
+                            });
+                        }
+                        if (node instanceof AST_Scope)
+                            return node; // to avoid descending in nested scopes
+                    }
+                }
+            );
+            self = self.transform(tt);
+            if (vars_found > 0) {
+                // collect only vars which don't show up in self's arguments list
+                var defs = [];
+                vars.each(function(def, name){
+                    if (self instanceof AST_Lambda
+                        && find_if(function(x){ return x.name == def.name.name },
+                                   self.argnames)) {
+                        vars.del(name);
+                    } else {
+                        def = def.clone();
+                        def.value = null;
+                        defs.push(def);
+                        vars.set(name, def);
+                    }
+                });
+                if (defs.length > 0) {
+                    // try to merge in assignments
+                    for (var i = 0; i < self.body.length;) {
+                        if (self.body[i] instanceof AST_SimpleStatement) {
+                            var expr = self.body[i].body, sym, assign;
+                            if (expr instanceof AST_Assign
+                                && expr.operator == "="
+                                && (sym = expr.left) instanceof AST_Symbol
+                                && vars.has(sym.name))
+                            {
+                                var def = vars.get(sym.name);
+                                if (def.value) break;
+                                def.value = expr.right;
+                                remove(defs, def);
+                                defs.push(def);
+                                self.body.splice(i, 1);
+                                continue;
+                            }
+                            if (expr instanceof AST_Seq
+                                && (assign = expr.car) instanceof AST_Assign
+                                && assign.operator == "="
+                                && (sym = assign.left) instanceof AST_Symbol
+                                && vars.has(sym.name))
+                            {
+                                var def = vars.get(sym.name);
+                                if (def.value) break;
+                                def.value = assign.right;
+                                remove(defs, def);
+                                defs.push(def);
+                                self.body[i].body = expr.cdr;
+                                continue;
+                            }
+                        }
+                        if (self.body[i] instanceof AST_EmptyStatement) {
+                            self.body.splice(i, 1);
+                            continue;
+                        }
+                        if (self.body[i] instanceof AST_BlockStatement) {
+                            var tmp = [ i, 1 ].concat(self.body[i].body);
+                            self.body.splice.apply(self.body, tmp);
+                            continue;
+                        }
+                        break;
+                    }
+                    defs = make_node(AST_Var, self, {
+                        definitions: defs
+                    });
+                    hoisted.push(defs);
+                };
+            }
+            self.body = dirs.concat(hoisted, self.body);
+        }
+        return self;
+    });
+
+    // drop_side_effect_free()
+    // remove side-effect-free parts which only affects return value
+    (function(def){
+        // Drop side-effect-free elements from an array of expressions.
+        // Returns an array of expressions with side-effects or null
+        // if all elements were dropped. Note: original array may be
+        // returned if nothing changed.
+        function trim(nodes, compressor, first_in_statement) {
+            var ret = [], changed = false;
+            for (var i = 0, len = nodes.length; i < len; i++) {
+                var node = nodes[i].drop_side_effect_free(compressor, first_in_statement);
+                changed |= node !== nodes[i];
+                if (node) {
+                    ret.push(node);
+                    first_in_statement = false;
+                }
+            }
+            return changed ? ret.length ? ret : null : nodes;
+        }
+
+        def(AST_Node, return_this);
+        def(AST_Constant, return_null);
+        def(AST_This, return_null);
+        def(AST_Call, function(compressor, first_in_statement){
+            if (!this.has_pure_annotation(compressor) && compressor.pure_funcs(this)) {
+                if (this.expression instanceof AST_Function
+                    && (!this.expression.name || !this.expression.name.definition().references.length)) {
+                    var node = this.clone();
+                    node.expression = node.expression.process_expression(false, compressor);
+                    return node;
+                }
+                return this;
+            }
+            if (this.pure) {
+                compressor.warn("Dropping __PURE__ call [{file}:{line},{col}]", this.start);
+                this.pure.value = this.pure.value.replace(/[@#]__PURE__/g, ' ');
+            }
+            var args = trim(this.args, compressor, first_in_statement);
+            return args && AST_Seq.from_array(args);
+        });
+        def(AST_Function, return_null);
+        def(AST_Binary, function(compressor, first_in_statement){
+            var right = this.right.drop_side_effect_free(compressor);
+            if (!right) return this.left.drop_side_effect_free(compressor, first_in_statement);
+            switch (this.operator) {
+              case "&&":
+              case "||":
+                if (right === this.right) return this;
+                var node = this.clone();
+                node.right = right;
+                return node;
+              default:
+                var left = this.left.drop_side_effect_free(compressor, first_in_statement);
+                if (!left) return this.right.drop_side_effect_free(compressor, first_in_statement);
+                return make_node(AST_Seq, this, {
+                    car: left,
+                    cdr: right
+                });
+            }
+        });
+        def(AST_Assign, return_this);
+        def(AST_Conditional, function(compressor){
+            var consequent = this.consequent.drop_side_effect_free(compressor);
+            var alternative = this.alternative.drop_side_effect_free(compressor);
+            if (consequent === this.consequent && alternative === this.alternative) return this;
+            if (!consequent) return alternative ? make_node(AST_Binary, this, {
+                operator: "||",
+                left: this.condition,
+                right: alternative
+            }) : this.condition.drop_side_effect_free(compressor);
+            if (!alternative) return make_node(AST_Binary, this, {
+                operator: "&&",
+                left: this.condition,
+                right: consequent
+            });
+            var node = this.clone();
+            node.consequent = consequent;
+            node.alternative = alternative;
+            return node;
+        });
+        def(AST_Unary, function(compressor, first_in_statement){
+            if (unary_side_effects(this.operator)) return this;
+            if (this.operator == "typeof" && this.expression instanceof AST_SymbolRef) return null;
+            var expression = this.expression.drop_side_effect_free(compressor, first_in_statement);
+            if (first_in_statement
+                && this instanceof AST_UnaryPrefix
+                && is_iife_call(expression)) {
+                if (expression === this.expression && this.operator.length === 1) return this;
+                return make_node(AST_UnaryPrefix, this, {
+                    operator: this.operator.length === 1 ? this.operator : "!",
+                    expression: expression
+                });
+            }
+            return expression;
+        });
+        def(AST_SymbolRef, function() {
+            return this.undeclared() ? this : null;
+        });
+        def(AST_Object, function(compressor, first_in_statement){
+            var values = trim(this.properties, compressor, first_in_statement);
+            return values && AST_Seq.from_array(values);
+        });
+        def(AST_ObjectProperty, function(compressor, first_in_statement){
+            return this.value.drop_side_effect_free(compressor, first_in_statement);
+        });
+        def(AST_Array, function(compressor, first_in_statement){
+            var values = trim(this.elements, compressor, first_in_statement);
+            return values && AST_Seq.from_array(values);
+        });
+        def(AST_Dot, function(compressor, first_in_statement){
+            if (this.expression.may_eq_null(compressor)) return this;
+            return this.expression.drop_side_effect_free(compressor, first_in_statement);
+        });
+        def(AST_Sub, function(compressor, first_in_statement){
+            if (this.expression.may_eq_null(compressor)) return this;
+            var expression = this.expression.drop_side_effect_free(compressor, first_in_statement);
+            if (!expression) return this.property.drop_side_effect_free(compressor, first_in_statement);
+            var property = this.property.drop_side_effect_free(compressor);
+            if (!property) return expression;
+            return make_node(AST_Seq, this, {
+                car: expression,
+                cdr: property
+            });
+        });
+        def(AST_Seq, function(compressor){
+            var cdr = this.cdr.drop_side_effect_free(compressor);
+            if (cdr === this.cdr) return this;
+            if (!cdr) return this.car;
+            return make_node(AST_Seq, this, {
+                car: this.car,
+                cdr: cdr
+            });
+        });
+    })(function(node, func){
+        node.DEFMETHOD("drop_side_effect_free", func);
+    });
+
+    OPT(AST_SimpleStatement, function(self, compressor){
+        if (compressor.option("side_effects")) {
+            var body = self.body;
+            var node = body.drop_side_effect_free(compressor, true);
+            if (!node) {
+                compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]", self.start);
+                return make_node(AST_EmptyStatement, self);
+            }
+            if (node !== body) {
+                return make_node(AST_SimpleStatement, self, { body: node });
+            }
+        }
+        return self;
+    });
+
+    OPT(AST_DWLoop, function(self, compressor){
+        if (!compressor.option("loops")) return self;
+        var cond = self.condition.evaluate(compressor);
+        if (cond !== self.condition) {
+            if (cond) {
+                return make_node(AST_For, self, {
+                    body: self.body
+                });
+            }
+            if (compressor.option("dead_code") && self instanceof AST_While) {
+                var a = [];
+                extract_declarations_from_unreachable_code(compressor, self.body, a);
+                return make_node(AST_BlockStatement, self, { body: a });
+            }
+            if (self instanceof AST_Do) {
+                var has_loop_control = false;
+                var tw = new TreeWalker(function(node) {
+                    if (node instanceof AST_Scope || has_loop_control) return true;
+                    if (node instanceof AST_LoopControl && tw.loopcontrol_target(node) === self)
+                        return has_loop_control = true;
+                });
+                self.walk(tw);
+                if (!has_loop_control) return self.body;
+            }
+        }
+        if (self instanceof AST_While) {
+            return make_node(AST_For, self, self).optimize(compressor);
+        }
+        return self;
+    });
+
+    function if_break_in_loop(self, compressor) {
+        function drop_it(rest) {
+            rest = as_statement_array(rest);
+            if (self.body instanceof AST_BlockStatement) {
+                self.body = self.body.clone();
+                self.body.body = rest.concat(self.body.body.slice(1));
+                self.body = self.body.transform(compressor);
+            } else {
+                self.body = make_node(AST_BlockStatement, self.body, {
+                    body: rest
+                }).transform(compressor);
+            }
+            if_break_in_loop(self, compressor);
+        }
+        var first = self.body instanceof AST_BlockStatement ? self.body.body[0] : self.body;
+        if (first instanceof AST_If) {
+            if (first.body instanceof AST_Break
+                && compressor.loopcontrol_target(first.body) === compressor.self()) {
+                if (self.condition) {
+                    self.condition = make_node(AST_Binary, self.condition, {
+                        left: self.condition,
+                        operator: "&&",
+                        right: first.condition.negate(compressor),
+                    });
+                } else {
+                    self.condition = first.condition.negate(compressor);
+                }
+                drop_it(first.alternative);
+            }
+            else if (first.alternative instanceof AST_Break
+                     && compressor.loopcontrol_target(first.alternative) === compressor.self()) {
+                if (self.condition) {
+                    self.condition = make_node(AST_Binary, self.condition, {
+                        left: self.condition,
+                        operator: "&&",
+                        right: first.condition,
+                    });
+                } else {
+                    self.condition = first.condition;
+                }
+                drop_it(first.body);
+            }
+        }
+    };
+
+    OPT(AST_For, function(self, compressor){
+        if (!compressor.option("loops")) return self;
+        if (self.condition) {
+            var cond = self.condition.evaluate(compressor);
+            if (compressor.option("dead_code") && !cond) {
+                var a = [];
+                if (self.init instanceof AST_Statement) {
+                    a.push(self.init);
+                }
+                else if (self.init) {
+                    a.push(make_node(AST_SimpleStatement, self.init, {
+                        body: self.init
+                    }));
+                }
+                extract_declarations_from_unreachable_code(compressor, self.body, a);
+                return make_node(AST_BlockStatement, self, { body: a });
+            }
+            if (cond !== self.condition) {
+                cond = make_node_from_constant(cond, self.condition).transform(compressor);
+                self.condition = best_of_expression(cond, self.condition);
+            }
+        }
+        if_break_in_loop(self, compressor);
+        return self;
+    });
+
+    OPT(AST_If, function(self, compressor){
+        if (is_empty(self.alternative)) self.alternative = null;
+
+        if (!compressor.option("conditionals")) return self;
+        // if condition can be statically determined, warn and drop
+        // one of the blocks.  note, statically determined implies
+        // “has no side effects”; also it doesn't work for cases like
+        // `x && true`, though it probably should.
+        var cond = self.condition.evaluate(compressor);
+        if (cond !== self.condition) {
+            if (cond) {
+                compressor.warn("Condition always true [{file}:{line},{col}]", self.condition.start);
+                if (compressor.option("dead_code")) {
+                    var a = [];
+                    if (self.alternative) {
+                        extract_declarations_from_unreachable_code(compressor, self.alternative, a);
+                    }
+                    a.push(self.body);
+                    return make_node(AST_BlockStatement, self, { body: a }).optimize(compressor);
+                }
+            } else {
+                compressor.warn("Condition always false [{file}:{line},{col}]", self.condition.start);
+                if (compressor.option("dead_code")) {
+                    var a = [];
+                    extract_declarations_from_unreachable_code(compressor, self.body, a);
+                    if (self.alternative) a.push(self.alternative);
+                    return make_node(AST_BlockStatement, self, { body: a }).optimize(compressor);
+                }
+            }
+            cond = make_node_from_constant(cond, self.condition).transform(compressor);
+            self.condition = best_of_expression(cond, self.condition);
+        }
+        var negated = self.condition.negate(compressor);
+        var self_condition_length = self.condition.print_to_string().length;
+        var negated_length = negated.print_to_string().length;
+        var negated_is_best = negated_length < self_condition_length;
+        if (self.alternative && negated_is_best) {
+            negated_is_best = false; // because we already do the switch here.
+            // no need to swap values of self_condition_length and negated_length
+            // here because they are only used in an equality comparison later on.
+            self.condition = negated;
+            var tmp = self.body;
+            self.body = self.alternative || make_node(AST_EmptyStatement, self);
+            self.alternative = tmp;
+        }
+        if (is_empty(self.body) && is_empty(self.alternative)) {
+            return make_node(AST_SimpleStatement, self.condition, {
+                body: self.condition.clone()
+            }).optimize(compressor);
+        }
+        if (self.body instanceof AST_SimpleStatement
+            && self.alternative instanceof AST_SimpleStatement) {
+            return make_node(AST_SimpleStatement, self, {
+                body: make_node(AST_Conditional, self, {
+                    condition   : self.condition,
+                    consequent  : self.body.body,
+                    alternative : self.alternative.body
+                })
+            }).optimize(compressor);
+        }
+        if (is_empty(self.alternative) && self.body instanceof AST_SimpleStatement) {
+            if (self_condition_length === negated_length && !negated_is_best
+                && self.condition instanceof AST_Binary && self.condition.operator == "||") {
+                // although the code length of self.condition and negated are the same,
+                // negated does not require additional surrounding parentheses.
+                // see https://github.com/mishoo/UglifyJS2/issues/979
+                negated_is_best = true;
+            }
+            if (negated_is_best) return make_node(AST_SimpleStatement, self, {
+                body: make_node(AST_Binary, self, {
+                    operator : "||",
+                    left     : negated,
+                    right    : self.body.body
+                })
+            }).optimize(compressor);
+            return make_node(AST_SimpleStatement, self, {
+                body: make_node(AST_Binary, self, {
+                    operator : "&&",
+                    left     : self.condition,
+                    right    : self.body.body
+                })
+            }).optimize(compressor);
+        }
+        if (self.body instanceof AST_EmptyStatement
+            && self.alternative instanceof AST_SimpleStatement) {
+            return make_node(AST_SimpleStatement, self, {
+                body: make_node(AST_Binary, self, {
+                    operator : "||",
+                    left     : self.condition,
+                    right    : self.alternative.body
+                })
+            }).optimize(compressor);
+        }
+        if (self.body instanceof AST_Exit
+            && self.alternative instanceof AST_Exit
+            && self.body.TYPE == self.alternative.TYPE) {
+            return make_node(self.body.CTOR, self, {
+                value: make_node(AST_Conditional, self, {
+                    condition   : self.condition,
+                    consequent  : self.body.value || make_node(AST_Undefined, self.body),
+                    alternative : self.alternative.value || make_node(AST_Undefined, self.alternative)
+                }).transform(compressor)
+            }).optimize(compressor);
+        }
+        if (self.body instanceof AST_If
+            && !self.body.alternative
+            && !self.alternative) {
+            self = make_node(AST_If, self, {
+                condition: make_node(AST_Binary, self.condition, {
+                    operator: "&&",
+                    left: self.condition,
+                    right: self.body.condition
+                }),
+                body: self.body.body,
+                alternative: null
+            });
+        }
+        if (aborts(self.body)) {
+            if (self.alternative) {
+                var alt = self.alternative;
+                self.alternative = null;
+                return make_node(AST_BlockStatement, self, {
+                    body: [ self, alt ]
+                }).optimize(compressor);
+            }
+        }
+        if (aborts(self.alternative)) {
+            var body = self.body;
+            self.body = self.alternative;
+            self.condition = negated_is_best ? negated : self.condition.negate(compressor);
+            self.alternative = null;
+            return make_node(AST_BlockStatement, self, {
+                body: [ self, body ]
+            }).optimize(compressor);
+        }
+        return self;
+    });
+
+    OPT(AST_Switch, function(self, compressor){
+        if (!compressor.option("switches")) return self;
+        var branch;
+        var value = self.expression.evaluate(compressor);
+        if (value !== self.expression) {
+            var expression = make_node_from_constant(value, self.expression).transform(compressor);
+            self.expression = best_of_expression(expression, self.expression);
+        }
+        if (!compressor.option("dead_code")) return self;
+        var decl = [];
+        var body = [];
+        var default_branch;
+        var exact_match;
+        for (var i = 0, len = self.body.length; i < len && !exact_match; i++) {
+            branch = self.body[i];
+            if (branch instanceof AST_Default) {
+                if (!default_branch) {
+                    default_branch = branch;
+                } else {
+                    eliminate_branch(branch, body[body.length - 1]);
+                }
+            } else if (value !== self.expression) {
+                var exp = branch.expression.evaluate(compressor);
+                if (exp === value) {
+                    exact_match = branch;
+                    if (default_branch) {
+                        var default_index = body.indexOf(default_branch);
+                        body.splice(default_index, 1);
+                        eliminate_branch(default_branch, body[default_index - 1]);
+                        default_branch = null;
+                    }
+                } else if (exp !== branch.expression) {
+                    eliminate_branch(branch, body[body.length - 1]);
+                    continue;
+                }
+            }
+            if (aborts(branch)) {
+                var prev = body[body.length - 1];
+                if (aborts(prev) && prev.body.length == branch.body.length
+                    && make_node(AST_BlockStatement, prev, prev).equivalent_to(make_node(AST_BlockStatement, branch, branch))) {
+                    prev.body = [];
+                }
+            }
+            body.push(branch);
+        }
+        while (i < len) eliminate_branch(self.body[i++], body[body.length - 1]);
+        if (body.length > 0) {
+            body[0].body = decl.concat(body[0].body);
+        }
+        self.body = body;
+        while (branch = body[body.length - 1]) {
+            var stat = branch.body[branch.body.length - 1];
+            if (stat instanceof AST_Break && compressor.loopcontrol_target(stat) === self)
+                branch.body.pop();
+            if (branch.body.length || branch instanceof AST_Case
+                && (default_branch || branch.expression.has_side_effects(compressor))) break;
+            if (body.pop() === default_branch) default_branch = null;
+        }
+        if (body.length == 0) {
+            return make_node(AST_BlockStatement, self, {
+                body: decl.concat(make_node(AST_SimpleStatement, self.expression, {
+                    body: self.expression
+                }))
+            }).optimize(compressor);
+        }
+        if (body.length == 1 && (body[0] === exact_match || body[0] === default_branch)) {
+            var has_break = false;
+            var tw = new TreeWalker(function(node) {
+                if (has_break
+                    || node instanceof AST_Lambda
+                    || node instanceof AST_SimpleStatement) return true;
+                if (node instanceof AST_Break && tw.loopcontrol_target(node) === self)
+                    has_break = true;
+            });
+            self.walk(tw);
+            if (!has_break) {
+                body = body[0].body.slice();
+                body.unshift(make_node(AST_SimpleStatement, self.expression, {
+                    body: self.expression
+                }));
+                return make_node(AST_BlockStatement, self, {
+                    body: body
+                }).optimize(compressor);
+            }
+        }
+        return self;
+
+        function eliminate_branch(branch, prev) {
+            if (prev && !aborts(prev)) {
+                prev.body = prev.body.concat(branch.body);
+            } else {
+                extract_declarations_from_unreachable_code(compressor, branch, decl);
+            }
+        }
+    });
+
+    OPT(AST_Try, function(self, compressor){
+        self.body = tighten_body(self.body, compressor);
+        if (self.bcatch && self.bfinally && all(self.bfinally.body, is_empty)) self.bfinally = null;
+        if (all(self.body, is_empty)) {
+            var body = [];
+            if (self.bcatch) extract_declarations_from_unreachable_code(compressor, self.bcatch, body);
+            if (self.bfinally) body = body.concat(self.bfinally.body);
+            return body.length > 0 ? make_node(AST_BlockStatement, self, {
+                body: body
+            }).optimize(compressor) : make_node(AST_EmptyStatement, self);
+        }
+        return self;
+    });
+
+    AST_Definitions.DEFMETHOD("remove_initializers", function(){
+        this.definitions.forEach(function(def){ def.value = null });
+    });
+
+    AST_Definitions.DEFMETHOD("to_assignments", function(compressor){
+        var reduce_vars = compressor.option("reduce_vars");
+        var assignments = this.definitions.reduce(function(a, def){
+            if (def.value) {
+                var name = make_node(AST_SymbolRef, def.name, def.name);
+                a.push(make_node(AST_Assign, def, {
+                    operator : "=",
+                    left     : name,
+                    right    : def.value
+                }));
+                if (reduce_vars) name.definition().fixed = false;
+            }
+            return a;
+        }, []);
+        if (assignments.length == 0) return null;
+        return AST_Seq.from_array(assignments);
+    });
+
+    OPT(AST_Definitions, function(self, compressor){
+        if (self.definitions.length == 0)
+            return make_node(AST_EmptyStatement, self);
+        return self;
+    });
+
+    OPT(AST_Call, function(self, compressor){
+        var exp = self.expression;
+        if (compressor.option("reduce_vars")
+            && exp instanceof AST_SymbolRef) {
+            var def = exp.definition();
+            var fixed = exp.fixed_value();
+            if (fixed instanceof AST_Defun) {
+                def.fixed = fixed = make_node(AST_Function, fixed, fixed).clone(true);
+            }
+            if (fixed instanceof AST_Function) {
+                exp = fixed;
+                if (compressor.option("unused")
+                    && def.references.length == 1
+                    && !(def.scope.uses_arguments
+                        && def.orig[0] instanceof AST_SymbolFunarg)
+                    && !def.scope.uses_eval
+                    && compressor.find_parent(AST_Scope) === def.scope) {
+                    self.expression = exp;
+                }
+            }
+        }
+        if (compressor.option("unused")
+            && exp instanceof AST_Function
+            && !exp.uses_arguments
+            && !exp.uses_eval) {
+            var pos = 0, last = 0;
+            for (var i = 0, len = self.args.length; i < len; i++) {
+                var trim = i >= exp.argnames.length;
+                if (trim || exp.argnames[i].__unused) {
+                    var node = self.args[i].drop_side_effect_free(compressor);
+                    if (node) {
+                        self.args[pos++] = node;
+                    } else if (!trim) {
+                        self.args[pos++] = make_node(AST_Number, self.args[i], {
+                            value: 0
+                        });
+                        continue;
+                    }
+                } else {
+                    self.args[pos++] = self.args[i];
+                }
+                last = pos;
+            }
+            self.args.length = last;
+        }
+        if (compressor.option("unsafe")) {
+            if (exp instanceof AST_SymbolRef && exp.undeclared()) {
+                switch (exp.name) {
+                  case "Array":
+                    if (self.args.length != 1) {
+                        return make_node(AST_Array, self, {
+                            elements: self.args
+                        }).optimize(compressor);
+                    }
+                    break;
+                  case "Object":
+                    if (self.args.length == 0) {
+                        return make_node(AST_Object, self, {
+                            properties: []
+                        });
+                    }
+                    break;
+                  case "String":
+                    if (self.args.length == 0) return make_node(AST_String, self, {
+                        value: ""
+                    });
+                    if (self.args.length <= 1) return make_node(AST_Binary, self, {
+                        left: self.args[0],
+                        operator: "+",
+                        right: make_node(AST_String, self, { value: "" })
+                    }).optimize(compressor);
+                    break;
+                  case "Number":
+                    if (self.args.length == 0) return make_node(AST_Number, self, {
+                        value: 0
+                    });
+                    if (self.args.length == 1) return make_node(AST_UnaryPrefix, self, {
+                        expression: self.args[0],
+                        operator: "+"
+                    }).optimize(compressor);
+                  case "Boolean":
+                    if (self.args.length == 0) return make_node(AST_False, self);
+                    if (self.args.length == 1) return make_node(AST_UnaryPrefix, self, {
+                        expression: make_node(AST_UnaryPrefix, self, {
+                            expression: self.args[0],
+                            operator: "!"
+                        }),
+                        operator: "!"
+                    }).optimize(compressor);
+                    break;
+                  case "Function":
+                    // new Function() => function(){}
+                    if (self.args.length == 0) return make_node(AST_Function, self, {
+                        argnames: [],
+                        body: []
+                    });
+                    if (all(self.args, function(x){ return x instanceof AST_String })) {
+                        // quite a corner-case, but we can handle it:
+                        //   https://github.com/mishoo/UglifyJS2/issues/203
+                        // if the code argument is a constant, then we can minify it.
+                        try {
+                            var code = "(function(" + self.args.slice(0, -1).map(function(arg){
+                                return arg.value;
+                            }).join(",") + "){" + self.args[self.args.length - 1].value + "})()";
+                            var ast = parse(code);
+                            ast.figure_out_scope({ screw_ie8: compressor.option("screw_ie8") });
+                            var comp = new Compressor(compressor.options);
+                            ast = ast.transform(comp);
+                            ast.figure_out_scope({ screw_ie8: compressor.option("screw_ie8") });
+                            ast.mangle_names();
+                            var fun;
+                            try {
+                                ast.walk(new TreeWalker(function(node){
+                                    if (node instanceof AST_Lambda) {
+                                        fun = node;
+                                        throw ast;
+                                    }
+                                }));
+                            } catch(ex) {
+                                if (ex !== ast) throw ex;
+                            };
+                            if (!fun) return self;
+                            var args = fun.argnames.map(function(arg, i){
+                                return make_node(AST_String, self.args[i], {
+                                    value: arg.print_to_string()
+                                });
+                            });
+                            var code = OutputStream();
+                            AST_BlockStatement.prototype._codegen.call(fun, fun, code);
+                            code = code.toString().replace(/^\{|\}$/g, "");
+                            args.push(make_node(AST_String, self.args[self.args.length - 1], {
+                                value: code
+                            }));
+                            self.args = args;
+                            return self;
+                        } catch(ex) {
+                            if (ex instanceof JS_Parse_Error) {
+                                compressor.warn("Error parsing code passed to new Function [{file}:{line},{col}]", self.args[self.args.length - 1].start);
+                                compressor.warn(ex.toString());
+                            } else {
+                                console.log(ex);
+                                throw ex;
+                            }
+                        }
+                    }
+                    break;
+                }
+            }
+            else if (exp instanceof AST_Dot && exp.property == "toString" && self.args.length == 0) {
+                return make_node(AST_Binary, self, {
+                    left: make_node(AST_String, self, { value: "" }),
+                    operator: "+",
+                    right: exp.expression
+                }).optimize(compressor);
+            }
+            else if (exp instanceof AST_Dot && exp.expression instanceof AST_Array && exp.property == "join") EXIT: {
+                var separator;
+                if (self.args.length > 0) {
+                    separator = self.args[0].evaluate(compressor);
+                    if (separator === self.args[0]) break EXIT; // not a constant
+                }
+                var elements = [];
+                var consts = [];
+                exp.expression.elements.forEach(function(el) {
+                    var value = el.evaluate(compressor);
+                    if (value !== el) {
+                        consts.push(value);
+                    } else {
+                        if (consts.length > 0) {
+                            elements.push(make_node(AST_String, self, {
+                                value: consts.join(separator)
+                            }));
+                            consts.length = 0;
+                        }
+                        elements.push(el);
+                    }
+                });
+                if (consts.length > 0) {
+                    elements.push(make_node(AST_String, self, {
+                        value: consts.join(separator)
+                    }));
+                }
+                if (elements.length == 0) return make_node(AST_String, self, { value: "" });
+                if (elements.length == 1) {
+                    if (elements[0].is_string(compressor)) {
+                        return elements[0];
+                    }
+                    return make_node(AST_Binary, elements[0], {
+                        operator : "+",
+                        left     : make_node(AST_String, self, { value: "" }),
+                        right    : elements[0]
+                    });
+                }
+                if (separator == "") {
+                    var first;
+                    if (elements[0].is_string(compressor)
+                        || elements[1].is_string(compressor)) {
+                        first = elements.shift();
+                    } else {
+                        first = make_node(AST_String, self, { value: "" });
+                    }
+                    return elements.reduce(function(prev, el){
+                        return make_node(AST_Binary, el, {
+                            operator : "+",
+                            left     : prev,
+                            right    : el
+                        });
+                    }, first).optimize(compressor);
+                }
+                // need this awkward cloning to not affect original element
+                // best_of will decide which one to get through.
+                var node = self.clone();
+                node.expression = node.expression.clone();
+                node.expression.expression = node.expression.expression.clone();
+                node.expression.expression.elements = elements;
+                return best_of(compressor, self, node);
+            }
+            else if (exp instanceof AST_Dot && exp.expression.is_string(compressor) && exp.property == "charAt") {
+                var arg = self.args[0];
+                var index = arg ? arg.evaluate(compressor) : 0;
+                if (index !== arg) {
+                    return make_node(AST_Sub, exp, {
+                        expression: exp.expression,
+                        property: make_node_from_constant(index | 0, arg || exp)
+                    }).optimize(compressor);
+                }
+            }
+        }
+        if (exp instanceof AST_Function) {
+            if (exp.body[0] instanceof AST_Return) {
+                var value = exp.body[0].value;
+                if (!value || value.is_constant()) {
+                    var args = self.args.concat(value || make_node(AST_Undefined, self));
+                    return AST_Seq.from_array(args).transform(compressor);
+                }
+            }
+            if (compressor.option("side_effects") && all(exp.body, is_empty)) {
+                var args = self.args.concat(make_node(AST_Undefined, self));
+                return AST_Seq.from_array(args).transform(compressor);
+            }
+        }
+        if (compressor.option("drop_console")) {
+            if (exp instanceof AST_PropAccess) {
+                var name = exp.expression;
+                while (name.expression) {
+                    name = name.expression;
+                }
+                if (name instanceof AST_SymbolRef
+                    && name.name == "console"
+                    && name.undeclared()) {
+                    return make_node(AST_Undefined, self).optimize(compressor);
+                }
+            }
+        }
+        if (compressor.option("negate_iife")
+            && compressor.parent() instanceof AST_SimpleStatement
+            && is_iife_call(self)) {
+            return self.negate(compressor, true);
+        }
+        return self;
+    });
+
+    OPT(AST_New, function(self, compressor){
+        if (compressor.option("unsafe")) {
+            var exp = self.expression;
+            if (exp instanceof AST_SymbolRef && exp.undeclared()) {
+                switch (exp.name) {
+                  case "Object":
+                  case "RegExp":
+                  case "Function":
+                  case "Error":
+                  case "Array":
+                    return make_node(AST_Call, self, self).transform(compressor);
+                }
+            }
+        }
+        return self;
+    });
+
+    OPT(AST_Seq, function(self, compressor){
+        if (!compressor.option("side_effects"))
+            return self;
+        self.car = self.car.drop_side_effect_free(compressor, first_in_statement(compressor));
+        if (!self.car) return maintain_this_binding(compressor.parent(), self, self.cdr);
+        if (compressor.option("cascade")) {
+            var left;
+            if (self.car instanceof AST_Assign
+                && !self.car.left.has_side_effects(compressor)) {
+                left = self.car.left;
+            } else if (self.car instanceof AST_Unary
+                && (self.car.operator == "++" || self.car.operator == "--")) {
+                left = self.car.expression;
+            }
+            if (left
+                && !(left instanceof AST_SymbolRef
+                    && left.definition().orig[0] instanceof AST_SymbolLambda)) {
+                var parent, field;
+                var cdr = self.cdr;
+                while (true) {
+                    if (cdr.equivalent_to(left)) {
+                        var car = self.car instanceof AST_UnaryPostfix ? make_node(AST_UnaryPrefix, self.car, {
+                            operator: self.car.operator,
+                            expression: left
+                        }) : self.car;
+                        if (parent) {
+                            parent[field] = car;
+                            return self.cdr;
+                        }
+                        return car;
+                    }
+                    if (cdr instanceof AST_Binary && !(cdr instanceof AST_Assign)) {
+                        if (cdr.left.is_constant()) {
+                            if (cdr.operator == "||" || cdr.operator == "&&") break;
+                            field = "right";
+                        } else {
+                            field = "left";
+                        }
+                    } else if (cdr instanceof AST_Call
+                        || cdr instanceof AST_Unary && !unary_side_effects(cdr.operator)) {
+                        field = "expression";
+                    } else break;
+                    parent = cdr;
+                    cdr = cdr[field];
+                }
+            }
+        }
+        if (is_undefined(self.cdr, compressor)) {
+            return make_node(AST_UnaryPrefix, self, {
+                operator   : "void",
+                expression : self.car
+            });
+        }
+        return self;
+    });
+
+    AST_Unary.DEFMETHOD("lift_sequences", function(compressor){
+        if (compressor.option("sequences")) {
+            if (this.expression instanceof AST_Seq) {
+                var seq = this.expression;
+                var x = seq.to_array();
+                var e = this.clone();
+                e.expression = x.pop();
+                x.push(e);
+                seq = AST_Seq.from_array(x).transform(compressor);
+                return seq;
+            }
+        }
+        return this;
+    });
+
+    OPT(AST_UnaryPostfix, function(self, compressor){
+        return self.lift_sequences(compressor);
+    });
+
+    OPT(AST_UnaryPrefix, function(self, compressor){
+        var e = self.expression;
+        if (self.operator == "delete"
+            && !(e instanceof AST_SymbolRef
+                || e instanceof AST_PropAccess
+                || e instanceof AST_NaN
+                || e instanceof AST_Infinity
+                || e instanceof AST_Undefined)) {
+            if (e instanceof AST_Seq) {
+                e = e.to_array();
+                e.push(make_node(AST_True, self));
+                return AST_Seq.from_array(e).optimize(compressor);
+            }
+            return make_node(AST_Seq, self, {
+                car: e,
+                cdr: make_node(AST_True, self)
+            }).optimize(compressor);
+        }
+        var seq = self.lift_sequences(compressor);
+        if (seq !== self) {
+            return seq;
+        }
+        if (compressor.option("side_effects") && self.operator == "void") {
+            e = e.drop_side_effect_free(compressor);
+            if (e) {
+                self.expression = e;
+                return self;
+            } else {
+                return make_node(AST_Undefined, self).optimize(compressor);
+            }
+        }
+        if (compressor.option("booleans") && compressor.in_boolean_context()) {
+            switch (self.operator) {
+              case "!":
+                if (e instanceof AST_UnaryPrefix && e.operator == "!") {
+                    // !!foo ==> foo, if we're in boolean context
+                    return e.expression;
+                }
+                if (e instanceof AST_Binary) {
+                    self = best_of(compressor, self, e.negate(compressor, first_in_statement(compressor)));
+                }
+                break;
+              case "typeof":
+                // typeof always returns a non-empty string, thus it's
+                // always true in booleans
+                compressor.warn("Boolean expression always true [{file}:{line},{col}]", self.start);
+                return (e instanceof AST_SymbolRef ? make_node(AST_True, self) : make_node(AST_Seq, self, {
+                    car: e,
+                    cdr: make_node(AST_True, self)
+                })).optimize(compressor);
+            }
+        }
+        if (self.operator == "-" && e instanceof AST_Infinity) {
+            e = e.transform(compressor);
+        }
+        if (e instanceof AST_Binary
+            && (self.operator == "+" || self.operator == "-")
+            && (e.operator == "*" || e.operator == "/" || e.operator == "%")) {
+            return make_node(AST_Binary, self, {
+                operator: e.operator,
+                left: make_node(AST_UnaryPrefix, e.left, {
+                    operator: self.operator,
+                    expression: e.left
+                }),
+                right: e.right
+            });
+        }
+        // avoids infinite recursion of numerals
+        if (self.operator != "-"
+            || !(e instanceof AST_Number || e instanceof AST_Infinity)) {
+            var ev = self.evaluate(compressor);
+            if (ev !== self) {
+                ev = make_node_from_constant(ev, self).optimize(compressor);
+                return best_of(compressor, ev, self);
+            }
+        }
+        return self;
+    });
+
+    AST_Binary.DEFMETHOD("lift_sequences", function(compressor){
+        if (compressor.option("sequences")) {
+            if (this.left instanceof AST_Seq) {
+                var seq = this.left;
+                var x = seq.to_array();
+                var e = this.clone();
+                e.left = x.pop();
+                x.push(e);
+                return AST_Seq.from_array(x).optimize(compressor);
+            }
+            if (this.right instanceof AST_Seq && !this.left.has_side_effects(compressor)) {
+                var assign = this.operator == "=" && this.left instanceof AST_SymbolRef;
+                var root = this.right.clone();
+                var cursor, seq = root;
+                while (assign || !seq.car.has_side_effects(compressor)) {
+                    cursor = seq;
+                    if (seq.cdr instanceof AST_Seq) {
+                        seq = seq.cdr = seq.cdr.clone();
+                    } else break;
+                }
+                if (cursor) {
+                    var e = this.clone();
+                    e.right = cursor.cdr;
+                    cursor.cdr = e;
+                    return root.optimize(compressor);
+                }
+            }
+        }
+        return this;
+    });
+
+    var commutativeOperators = makePredicate("== === != !== * & | ^");
+
+    OPT(AST_Binary, function(self, compressor){
+        function reversible() {
+            return self.left.is_constant()
+                || self.right.is_constant()
+                || !self.left.has_side_effects(compressor)
+                    && !self.right.has_side_effects(compressor);
+        }
+        function reverse(op) {
+            if (reversible()) {
+                if (op) self.operator = op;
+                var tmp = self.left;
+                self.left = self.right;
+                self.right = tmp;
+            }
+        }
+        if (commutativeOperators(self.operator)) {
+            if (self.right.is_constant()
+                && !self.left.is_constant()) {
+                // if right is a constant, whatever side effects the
+                // left side might have could not influence the
+                // result.  hence, force switch.
+
+                if (!(self.left instanceof AST_Binary
+                      && PRECEDENCE[self.left.operator] >= PRECEDENCE[self.operator])) {
+                    reverse();
+                }
+            }
+        }
+        self = self.lift_sequences(compressor);
+        if (compressor.option("comparisons")) switch (self.operator) {
+          case "===":
+          case "!==":
+            if ((self.left.is_string(compressor) && self.right.is_string(compressor)) ||
+                (self.left.is_number(compressor) && self.right.is_number(compressor)) ||
+                (self.left.is_boolean() && self.right.is_boolean())) {
+                self.operator = self.operator.substr(0, 2);
+            }
+            // XXX: intentionally falling down to the next case
+          case "==":
+          case "!=":
+            // "undefined" == typeof x => undefined === x
+            if (self.left instanceof AST_String
+                && self.left.value == "undefined"
+                && self.right instanceof AST_UnaryPrefix
+                && self.right.operator == "typeof") {
+                var expr = self.right.expression;
+                if (expr instanceof AST_SymbolRef ? !expr.undeclared()
+                    : !(expr instanceof AST_PropAccess) || compressor.option("screw_ie8")) {
+                    self.right = expr;
+                    self.left = make_node(AST_Undefined, self.left).optimize(compressor);
+                    if (self.operator.length == 2) self.operator += "=";
+                }
+            }
+            break;
+        }
+        if (compressor.option("booleans") && self.operator == "+" && compressor.in_boolean_context()) {
+            var ll = self.left.evaluate(compressor);
+            var rr = self.right.evaluate(compressor);
+            if (ll && typeof ll == "string") {
+                compressor.warn("+ in boolean context always true [{file}:{line},{col}]", self.start);
+                return make_node(AST_Seq, self, {
+                    car: self.right,
+                    cdr: make_node(AST_True, self)
+                }).optimize(compressor);
+            }
+            if (rr && typeof rr == "string") {
+                compressor.warn("+ in boolean context always true [{file}:{line},{col}]", self.start);
+                return make_node(AST_Seq, self, {
+                    car: self.left,
+                    cdr: make_node(AST_True, self)
+                }).optimize(compressor);
+            }
+        }
+        if (compressor.option("comparisons") && self.is_boolean()) {
+            if (!(compressor.parent() instanceof AST_Binary)
+                || compressor.parent() instanceof AST_Assign) {
+                var negated = make_node(AST_UnaryPrefix, self, {
+                    operator: "!",
+                    expression: self.negate(compressor, first_in_statement(compressor))
+                });
+                self = best_of(compressor, self, negated);
+            }
+            if (compressor.option("unsafe_comps")) {
+                switch (self.operator) {
+                  case "<": reverse(">"); break;
+                  case "<=": reverse(">="); break;
+                }
+            }
+        }
+        if (self.operator == "+") {
+            if (self.right instanceof AST_String
+                && self.right.getValue() == ""
+                && self.left.is_string(compressor)) {
+                return self.left;
+            }
+            if (self.left instanceof AST_String
+                && self.left.getValue() == ""
+                && self.right.is_string(compressor)) {
+                return self.right;
+            }
+            if (self.left instanceof AST_Binary
+                && self.left.operator == "+"
+                && self.left.left instanceof AST_String
+                && self.left.left.getValue() == ""
+                && self.right.is_string(compressor)) {
+                self.left = self.left.right;
+                return self.transform(compressor);
+            }
+        }
+        if (compressor.option("evaluate")) {
+            switch (self.operator) {
+              case "&&":
+                var ll = self.left.evaluate(compressor);
+                if (!ll) {
+                    compressor.warn("Condition left of && always false [{file}:{line},{col}]", self.start);
+                    return maintain_this_binding(compressor.parent(), self, self.left).optimize(compressor);
+                } else if (ll !== self.left) {
+                    compressor.warn("Condition left of && always true [{file}:{line},{col}]", self.start);
+                    return maintain_this_binding(compressor.parent(), self, self.right).optimize(compressor);
+                }
+                if (compressor.option("booleans") && compressor.in_boolean_context()) {
+                    var rr = self.right.evaluate(compressor);
+                    if (!rr) {
+                        compressor.warn("Boolean && always false [{file}:{line},{col}]", self.start);
+                        return make_node(AST_Seq, self, {
+                            car: self.left,
+                            cdr: make_node(AST_False, self)
+                        }).optimize(compressor);
+                    } else if (rr !== self.right) {
+                        compressor.warn("Dropping side-effect-free && in boolean context [{file}:{line},{col}]", self.start);
+                        return self.left.optimize(compressor);
+                    }
+                }
+                break;
+              case "||":
+                var ll = self.left.evaluate(compressor);
+                if (!ll) {
+                    compressor.warn("Condition left of || always false [{file}:{line},{col}]", self.start);
+                    return maintain_this_binding(compressor.parent(), self, self.right).optimize(compressor);
+                } else if (ll !== self.left) {
+                    compressor.warn("Condition left of || always true [{file}:{line},{col}]", self.start);
+                    return maintain_this_binding(compressor.parent(), self, self.left).optimize(compressor);
+                }
+                if (compressor.option("booleans") && compressor.in_boolean_context()) {
+                    var rr = self.right.evaluate(compressor);
+                    if (!rr) {
+                        compressor.warn("Dropping side-effect-free || in boolean context [{file}:{line},{col}]", self.start);
+                        return self.left.optimize(compressor);
+                    } else if (rr !== self.right) {
+                        compressor.warn("Boolean || always true [{file}:{line},{col}]", self.start);
+                        return make_node(AST_Seq, self, {
+                            car: self.left,
+                            cdr: make_node(AST_True, self)
+                        }).optimize(compressor);
+                    }
+                }
+                break;
+            }
+            var associative = true;
+            switch (self.operator) {
+              case "+":
+                // "foo" + ("bar" + x) => "foobar" + x
+                if (self.left instanceof AST_Constant
+                    && self.right instanceof AST_Binary
+                    && self.right.operator == "+"
+                    && self.right.left instanceof AST_Constant
+                    && self.right.is_string(compressor)) {
+                    self = make_node(AST_Binary, self, {
+                        operator: "+",
+                        left: make_node(AST_String, self.left, {
+                            value: "" + self.left.getValue() + self.right.left.getValue(),
+                            start: self.left.start,
+                            end: self.right.left.end
+                        }),
+                        right: self.right.right
+                    });
+                }
+                // (x + "foo") + "bar" => x + "foobar"
+                if (self.right instanceof AST_Constant
+                    && self.left instanceof AST_Binary
+                    && self.left.operator == "+"
+                    && self.left.right instanceof AST_Constant
+                    && self.left.is_string(compressor)) {
+                    self = make_node(AST_Binary, self, {
+                        operator: "+",
+                        left: self.left.left,
+                        right: make_node(AST_String, self.right, {
+                            value: "" + self.left.right.getValue() + self.right.getValue(),
+                            start: self.left.right.start,
+                            end: self.right.end
+                        })
+                    });
+                }
+                // (x + "foo") + ("bar" + y) => (x + "foobar") + y
+                if (self.left instanceof AST_Binary
+                    && self.left.operator == "+"
+                    && self.left.is_string(compressor)
+                    && self.left.right instanceof AST_Constant
+                    && self.right instanceof AST_Binary
+                    && self.right.operator == "+"
+                    && self.right.left instanceof AST_Constant
+                    && self.right.is_string(compressor)) {
+                    self = make_node(AST_Binary, self, {
+                        operator: "+",
+                        left: make_node(AST_Binary, self.left, {
+                            operator: "+",
+                            left: self.left.left,
+                            right: make_node(AST_String, self.left.right, {
+                                value: "" + self.left.right.getValue() + self.right.left.getValue(),
+                                start: self.left.right.start,
+                                end: self.right.left.end
+                            })
+                        }),
+                        right: self.right.right
+                    });
+                }
+                // a + -b => a - b
+                if (self.right instanceof AST_UnaryPrefix
+                    && self.right.operator == "-"
+                    && self.left.is_number(compressor)) {
+                    self = make_node(AST_Binary, self, {
+                        operator: "-",
+                        left: self.left,
+                        right: self.right.expression
+                    });
+                    break;
+                }
+                // -a + b => b - a
+                if (self.left instanceof AST_UnaryPrefix
+                    && self.left.operator == "-"
+                    && reversible()
+                    && self.right.is_number(compressor)) {
+                    self = make_node(AST_Binary, self, {
+                        operator: "-",
+                        left: self.right,
+                        right: self.left.expression
+                    });
+                    break;
+                }
+              case "*":
+                associative = compressor.option("unsafe_math");
+              case "&":
+              case "|":
+              case "^":
+                // a + +b => +b + a
+                if (self.left.is_number(compressor)
+                    && self.right.is_number(compressor)
+                    && reversible()
+                    && !(self.left instanceof AST_Binary
+                        && self.left.operator != self.operator
+                        && PRECEDENCE[self.left.operator] >= PRECEDENCE[self.operator])) {
+                    var reversed = make_node(AST_Binary, self, {
+                        operator: self.operator,
+                        left: self.right,
+                        right: self.left
+                    });
+                    if (self.right instanceof AST_Constant
+                        && !(self.left instanceof AST_Constant)) {
+                        self = best_of(compressor, reversed, self);
+                    } else {
+                        self = best_of(compressor, self, reversed);
+                    }
+                }
+                if (associative && self.is_number(compressor)) {
+                    // a + (b + c) => (a + b) + c
+                    if (self.right instanceof AST_Binary
+                        && self.right.operator == self.operator) {
+                        self = make_node(AST_Binary, self, {
+                            operator: self.operator,
+                            left: make_node(AST_Binary, self.left, {
+                                operator: self.operator,
+                                left: self.left,
+                                right: self.right.left,
+                                start: self.left.start,
+                                end: self.right.left.end
+                            }),
+                            right: self.right.right
+                        });
+                    }
+                    // (n + 2) + 3 => 5 + n
+                    // (2 * n) * 3 => 6 + n
+                    if (self.right instanceof AST_Constant
+                        && self.left instanceof AST_Binary
+                        && self.left.operator == self.operator) {
+                        if (self.left.left instanceof AST_Constant) {
+                            self = make_node(AST_Binary, self, {
+                                operator: self.operator,
+                                left: make_node(AST_Binary, self.left, {
+                                    operator: self.operator,
+                                    left: self.left.left,
+                                    right: self.right,
+                                    start: self.left.left.start,
+                                    end: self.right.end
+                                }),
+                                right: self.left.right
+                            });
+                        } else if (self.left.right instanceof AST_Constant) {
+                            self = make_node(AST_Binary, self, {
+                                operator: self.operator,
+                                left: make_node(AST_Binary, self.left, {
+                                    operator: self.operator,
+                                    left: self.left.right,
+                                    right: self.right,
+                                    start: self.left.right.start,
+                                    end: self.right.end
+                                }),
+                                right: self.left.left
+                            });
+                        }
+                    }
+                    // (a | 1) | (2 | d) => (3 | a) | b
+                    if (self.left instanceof AST_Binary
+                        && self.left.operator == self.operator
+                        && self.left.right instanceof AST_Constant
+                        && self.right instanceof AST_Binary
+                        && self.right.operator == self.operator
+                        && self.right.left instanceof AST_Constant) {
+                        self = make_node(AST_Binary, self, {
+                            operator: self.operator,
+                            left: make_node(AST_Binary, self.left, {
+                                operator: self.operator,
+                                left: make_node(AST_Binary, self.left.left, {
+                                    operator: self.operator,
+                                    left: self.left.right,
+                                    right: self.right.left,
+                                    start: self.left.right.start,
+                                    end: self.right.left.end
+                                }),
+                                right: self.left.left
+                            }),
+                            right: self.right.right
+                        });
+                    }
+                }
+            }
+        }
+        // x && (y && z)  ==>  x && y && z
+        // x || (y || z)  ==>  x || y || z
+        // x + ("y" + z)  ==>  x + "y" + z
+        // "x" + (y + "z")==>  "x" + y + "z"
+        if (self.right instanceof AST_Binary
+            && self.right.operator == self.operator
+            && (self.operator == "&&"
+                || self.operator == "||"
+                || (self.operator == "+"
+                    && (self.right.left.is_string(compressor)
+                        || (self.left.is_string(compressor)
+                            && self.right.right.is_string(compressor))))))
+        {
+            self.left = make_node(AST_Binary, self.left, {
+                operator : self.operator,
+                left     : self.left,
+                right    : self.right.left
+            });
+            self.right = self.right.right;
+            return self.transform(compressor);
+        }
+        var ev = self.evaluate(compressor);
+        if (ev !== self) {
+            ev = make_node_from_constant(ev, self).optimize(compressor);
+            return best_of(compressor, ev, self);
+        }
+        return self;
+    });
+
+    OPT(AST_SymbolRef, function(self, compressor){
+        var def = self.resolve_defines(compressor);
+        if (def) {
+            return def.optimize(compressor);
+        }
+        // testing against !self.scope.uses_with first is an optimization
+        if (compressor.option("screw_ie8")
+            && self.undeclared()
+            && (!self.scope.uses_with || !compressor.find_parent(AST_With))) {
+            switch (self.name) {
+              case "undefined":
+                return make_node(AST_Undefined, self).optimize(compressor);
+              case "NaN":
+                return make_node(AST_NaN, self).optimize(compressor);
+              case "Infinity":
+                return make_node(AST_Infinity, self).optimize(compressor);
+            }
+        }
+        if (compressor.option("evaluate") && compressor.option("reduce_vars")) {
+            var d = self.definition();
+            var fixed = self.fixed_value();
+            if (fixed) {
+                if (d.should_replace === undefined) {
+                    var init = fixed.evaluate(compressor);
+                    if (init !== fixed) {
+                        init = make_node_from_constant(init, fixed);
+                        var value = best_of_expression(init.optimize(compressor), fixed).print_to_string().length;
+                        var name = d.name.length;
+                        var freq = d.references.length;
+                        var overhead = d.global || !freq ? 0 : (name + 2 + value) / freq;
+                        d.should_replace = value <= name + overhead ? init : false;
+                    } else {
+                        d.should_replace = false;
+                    }
+                }
+                if (d.should_replace) {
+                    return best_of_expression(d.should_replace.optimize(compressor), fixed).clone(true);
+                }
+            }
+        }
+        return self;
+    });
+
+    function is_atomic(lhs, self) {
+        return lhs instanceof AST_SymbolRef || lhs.TYPE === self.TYPE;
+    }
+
+    OPT(AST_Undefined, function(self, compressor){
+        if (compressor.option("unsafe")) {
+            var undef = find_variable(compressor, "undefined");
+            if (undef) {
+                var ref = make_node(AST_SymbolRef, self, {
+                    name   : "undefined",
+                    scope  : undef.scope,
+                    thedef : undef
+                });
+                ref.is_undefined = true;
+                return ref;
+            }
+        }
+        var lhs = is_lhs(compressor.self(), compressor.parent());
+        if (lhs && is_atomic(lhs, self)) return self;
+        return make_node(AST_UnaryPrefix, self, {
+            operator: "void",
+            expression: make_node(AST_Number, self, {
+                value: 0
+            })
+        });
+    });
+
+    OPT(AST_Infinity, function(self, compressor){
+        var lhs = is_lhs(compressor.self(), compressor.parent());
+        if (lhs && is_atomic(lhs, self)) return self;
+        if (compressor.option("keep_infinity")
+            && !(lhs && !is_atomic(lhs, self))
+            && !find_variable(compressor, "Infinity"))
+            return self;
+        return make_node(AST_Binary, self, {
+            operator: "/",
+            left: make_node(AST_Number, self, {
+                value: 1
+            }),
+            right: make_node(AST_Number, self, {
+                value: 0
+            })
+        });
+    });
+
+    OPT(AST_NaN, function(self, compressor){
+        var lhs = is_lhs(compressor.self(), compressor.parent());
+        if (lhs && !is_atomic(lhs, self)
+            || find_variable(compressor, "NaN")) {
+            return make_node(AST_Binary, self, {
+                operator: "/",
+                left: make_node(AST_Number, self, {
+                    value: 0
+                }),
+                right: make_node(AST_Number, self, {
+                    value: 0
+                })
+            });
+        }
+        return self;
+    });
+
+    var ASSIGN_OPS = [ '+', '-', '/', '*', '%', '>>', '<<', '>>>', '|', '^', '&' ];
+    var ASSIGN_OPS_COMMUTATIVE = [ '*', '|', '^', '&' ];
+    OPT(AST_Assign, function(self, compressor){
+        self = self.lift_sequences(compressor);
+        if (self.operator == "=" && self.left instanceof AST_SymbolRef && self.right instanceof AST_Binary) {
+            // x = expr1 OP expr2
+            if (self.right.left instanceof AST_SymbolRef
+                && self.right.left.name == self.left.name
+                && member(self.right.operator, ASSIGN_OPS)) {
+                // x = x - 2  --->  x -= 2
+                self.operator = self.right.operator + "=";
+                self.right = self.right.right;
+            }
+            else if (self.right.right instanceof AST_SymbolRef
+                && self.right.right.name == self.left.name
+                && member(self.right.operator, ASSIGN_OPS_COMMUTATIVE)
+                && !self.right.left.has_side_effects(compressor)) {
+                // x = 2 & x  --->  x &= 2
+                self.operator = self.right.operator + "=";
+                self.right = self.right.left;
+            }
+        }
+        return self;
+    });
+
+    OPT(AST_Conditional, function(self, compressor){
+        if (!compressor.option("conditionals")) return self;
+        if (self.condition instanceof AST_Seq) {
+            var car = self.condition.car;
+            self.condition = self.condition.cdr;
+            return AST_Seq.cons(car, self);
+        }
+        var cond = self.condition.evaluate(compressor);
+        if (cond !== self.condition) {
+            if (cond) {
+                compressor.warn("Condition always true [{file}:{line},{col}]", self.start);
+                return maintain_this_binding(compressor.parent(), self, self.consequent);
+            } else {
+                compressor.warn("Condition always false [{file}:{line},{col}]", self.start);
+                return maintain_this_binding(compressor.parent(), self, self.alternative);
+            }
+        }
+        var negated = cond.negate(compressor, first_in_statement(compressor));
+        if (best_of(compressor, cond, negated) === negated) {
+            self = make_node(AST_Conditional, self, {
+                condition: negated,
+                consequent: self.alternative,
+                alternative: self.consequent
+            });
+        }
+        var condition = self.condition;
+        var consequent = self.consequent;
+        var alternative = self.alternative;
+        // x?x:y --> x||y
+        if (condition instanceof AST_SymbolRef
+            && consequent instanceof AST_SymbolRef
+            && condition.definition() === consequent.definition()) {
+            return make_node(AST_Binary, self, {
+                operator: "||",
+                left: condition,
+                right: alternative
+            });
+        }
+        // if (foo) exp = something; else exp = something_else;
+        //                   |
+        //                   v
+        // exp = foo ? something : something_else;
+        if (consequent instanceof AST_Assign
+            && alternative instanceof AST_Assign
+            && consequent.operator == alternative.operator
+            && consequent.left.equivalent_to(alternative.left)
+            && (!self.condition.has_side_effects(compressor)
+                || consequent.operator == "="
+                    && !consequent.left.has_side_effects(compressor))) {
+            return make_node(AST_Assign, self, {
+                operator: consequent.operator,
+                left: consequent.left,
+                right: make_node(AST_Conditional, self, {
+                    condition: self.condition,
+                    consequent: consequent.right,
+                    alternative: alternative.right
+                })
+            });
+        }
+        // x ? y(a) : y(b) --> y(x ? a : b)
+        if (consequent instanceof AST_Call
+            && alternative.TYPE === consequent.TYPE
+            && consequent.args.length == 1
+            && alternative.args.length == 1
+            && consequent.expression.equivalent_to(alternative.expression)
+            && !consequent.expression.has_side_effects(compressor)) {
+            consequent.args[0] = make_node(AST_Conditional, self, {
+                condition: self.condition,
+                consequent: consequent.args[0],
+                alternative: alternative.args[0]
+            });
+            return consequent;
+        }
+        // x?y?z:a:a --> x&&y?z:a
+        if (consequent instanceof AST_Conditional
+            && consequent.alternative.equivalent_to(alternative)) {
+            return make_node(AST_Conditional, self, {
+                condition: make_node(AST_Binary, self, {
+                    left: self.condition,
+                    operator: "&&",
+                    right: consequent.condition
+                }),
+                consequent: consequent.consequent,
+                alternative: alternative
+            });
+        }
+        // x ? y : y --> x, y
+        if (consequent.equivalent_to(alternative)) {
+            return make_node(AST_Seq, self, {
+                car: self.condition,
+                cdr: consequent
+            }).optimize(compressor);
+        }
+
+        if (is_true(self.consequent)) {
+            if (is_false(self.alternative)) {
+                // c ? true : false ---> !!c
+                return booleanize(self.condition);
+            }
+            // c ? true : x ---> !!c || x
+            return make_node(AST_Binary, self, {
+                operator: "||",
+                left: booleanize(self.condition),
+                right: self.alternative
+            });
+        }
+        if (is_false(self.consequent)) {
+            if (is_true(self.alternative)) {
+                // c ? false : true ---> !c
+                return booleanize(self.condition.negate(compressor));
+            }
+            // c ? false : x ---> !c && x
+            return make_node(AST_Binary, self, {
+                operator: "&&",
+                left: booleanize(self.condition.negate(compressor)),
+                right: self.alternative
+            });
+        }
+        if (is_true(self.alternative)) {
+            // c ? x : true ---> !c || x
+            return make_node(AST_Binary, self, {
+                operator: "||",
+                left: booleanize(self.condition.negate(compressor)),
+                right: self.consequent
+            });
+        }
+        if (is_false(self.alternative)) {
+            // c ? x : false ---> !!c && x
+            return make_node(AST_Binary, self, {
+                operator: "&&",
+                left: booleanize(self.condition),
+                right: self.consequent
+            });
+        }
+
+        return self;
+
+        function booleanize(node) {
+            if (node.is_boolean()) return node;
+            // !!expression
+            return make_node(AST_UnaryPrefix, node, {
+                operator: "!",
+                expression: node.negate(compressor)
+            });
+        }
+
+        // AST_True or !0
+        function is_true(node) {
+            return node instanceof AST_True
+                || (node instanceof AST_UnaryPrefix
+                    && node.operator == "!"
+                    && node.expression instanceof AST_Constant
+                    && !node.expression.value);
+        }
+        // AST_False or !1
+        function is_false(node) {
+            return node instanceof AST_False
+                || (node instanceof AST_UnaryPrefix
+                    && node.operator == "!"
+                    && node.expression instanceof AST_Constant
+                    && !!node.expression.value);
+        }
+    });
+
+    OPT(AST_Boolean, function(self, compressor){
+        if (compressor.option("booleans")) {
+            var p = compressor.parent();
+            if (p instanceof AST_Binary && (p.operator == "=="
+                                            || p.operator == "!=")) {
+                compressor.warn("Non-strict equality against boolean: {operator} {value} [{file}:{line},{col}]", {
+                    operator : p.operator,
+                    value    : self.value,
+                    file     : p.start.file,
+                    line     : p.start.line,
+                    col      : p.start.col,
+                });
+                return make_node(AST_Number, self, {
+                    value: +self.value
+                });
+            }
+            return make_node(AST_UnaryPrefix, self, {
+                operator: "!",
+                expression: make_node(AST_Number, self, {
+                    value: 1 - self.value
+                })
+            });
+        }
+        return self;
+    });
+
+    OPT(AST_Sub, function(self, compressor){
+        var prop = self.property;
+        if (prop instanceof AST_String && compressor.option("properties")) {
+            prop = prop.getValue();
+            if (RESERVED_WORDS(prop) ? compressor.option("screw_ie8") : is_identifier_string(prop)) {
+                return make_node(AST_Dot, self, {
+                    expression : self.expression,
+                    property   : prop
+                }).optimize(compressor);
+            }
+            var v = parseFloat(prop);
+            if (!isNaN(v) && v.toString() == prop) {
+                self.property = make_node(AST_Number, self.property, {
+                    value: v
+                });
+            }
+        }
+        var ev = self.evaluate(compressor);
+        if (ev !== self) {
+            ev = make_node_from_constant(ev, self).optimize(compressor);
+            return best_of(compressor, ev, self);
+        }
+        return self;
+    });
+
+    OPT(AST_Dot, function(self, compressor){
+        var def = self.resolve_defines(compressor);
+        if (def) {
+            return def.optimize(compressor);
+        }
+        var prop = self.property;
+        if (RESERVED_WORDS(prop) && !compressor.option("screw_ie8")) {
+            return make_node(AST_Sub, self, {
+                expression : self.expression,
+                property   : make_node(AST_String, self, {
+                    value: prop
+                })
+            }).optimize(compressor);
+        }
+        if (compressor.option("unsafe_proto")
+            && self.expression instanceof AST_Dot
+            && self.expression.property == "prototype") {
+            var exp = self.expression.expression;
+            if (exp instanceof AST_SymbolRef && exp.undeclared()) switch (exp.name) {
+              case "Array":
+                self.expression = make_node(AST_Array, self.expression, {
+                    elements: []
+                });
+                break;
+              case "Object":
+                self.expression = make_node(AST_Object, self.expression, {
+                    properties: []
+                });
+                break;
+              case "String":
+                self.expression = make_node(AST_String, self.expression, {
+                    value: ""
+                });
+                break;
+            }
+        }
+        var ev = self.evaluate(compressor);
+        if (ev !== self) {
+            ev = make_node_from_constant(ev, self).optimize(compressor);
+            return best_of(compressor, ev, self);
+        }
+        return self;
+    });
+
+    function literals_in_boolean_context(self, compressor) {
+        if (compressor.option("booleans") && compressor.in_boolean_context()) {
+            return best_of(compressor, self, make_node(AST_Seq, self, {
+                car: self,
+                cdr: make_node(AST_True, self)
+            }).optimize(compressor));
+        }
+        return self;
+    };
+    OPT(AST_Array, literals_in_boolean_context);
+    OPT(AST_Object, literals_in_boolean_context);
+    OPT(AST_RegExp, literals_in_boolean_context);
+
+    OPT(AST_Return, function(self, compressor){
+        if (self.value && is_undefined(self.value, compressor)) {
+            self.value = null;
+        }
+        return self;
+    });
+
+    OPT(AST_VarDef, function(self, compressor){
+        var defines = compressor.option("global_defs");
+        if (defines && HOP(defines, self.name.name)) {
+            compressor.warn('global_defs ' + self.name.name + ' redefined [{file}:{line},{col}]', self.start);
+        }
+        return self;
+    });
+
+})();
diff --git a/node_modules/uglify-js/lib/mozilla-ast.js b/node_modules/uglify-js/lib/mozilla-ast.js
new file mode 100644
index 000000000..12b55dc5b
--- /dev/null
+++ b/node_modules/uglify-js/lib/mozilla-ast.js
@@ -0,0 +1,609 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+(function(){
+
+    var normalize_directives = function(body) {
+        var in_directive = true;
+
+        for (var i = 0; i < body.length; i++) {
+            if (in_directive && body[i] instanceof AST_Statement && body[i].body instanceof AST_String) {
+                body[i] = new AST_Directive({
+                    start: body[i].start,
+                    end: body[i].end,
+                    value: body[i].body.value
+                });
+            } else if (in_directive && !(body[i] instanceof AST_Statement && body[i].body instanceof AST_String)) {
+                in_directive = false;
+            }
+        }
+
+        return body;
+    };
+
+    var MOZ_TO_ME = {
+        Program: function(M) {
+            return new AST_Toplevel({
+                start: my_start_token(M),
+                end: my_end_token(M),
+                body: normalize_directives(M.body.map(from_moz))
+            });
+        },
+        FunctionDeclaration: function(M) {
+            return new AST_Defun({
+                start: my_start_token(M),
+                end: my_end_token(M),
+                name: from_moz(M.id),
+                argnames: M.params.map(from_moz),
+                body: normalize_directives(from_moz(M.body).body)
+            });
+        },
+        FunctionExpression: function(M) {
+            return new AST_Function({
+                start: my_start_token(M),
+                end: my_end_token(M),
+                name: from_moz(M.id),
+                argnames: M.params.map(from_moz),
+                body: normalize_directives(from_moz(M.body).body)
+            });
+        },
+        ExpressionStatement: function(M) {
+            return new AST_SimpleStatement({
+                start: my_start_token(M),
+                end: my_end_token(M),
+                body: from_moz(M.expression)
+            });
+        },
+        TryStatement: function(M) {
+            var handlers = M.handlers || [M.handler];
+            if (handlers.length > 1 || M.guardedHandlers && M.guardedHandlers.length) {
+                throw new Error("Multiple catch clauses are not supported.");
+            }
+            return new AST_Try({
+                start    : my_start_token(M),
+                end      : my_end_token(M),
+                body     : from_moz(M.block).body,
+                bcatch   : from_moz(handlers[0]),
+                bfinally : M.finalizer ? new AST_Finally(from_moz(M.finalizer)) : null
+            });
+        },
+        Property: function(M) {
+            var key = M.key;
+            var name = key.type == "Identifier" ? key.name : key.value;
+            var args = {
+                start    : my_start_token(key),
+                end      : my_end_token(M.value),
+                key      : name,
+                value    : from_moz(M.value)
+            };
+            switch (M.kind) {
+              case "init":
+                return new AST_ObjectKeyVal(args);
+              case "set":
+                args.value.name = from_moz(key);
+                return new AST_ObjectSetter(args);
+              case "get":
+                args.value.name = from_moz(key);
+                return new AST_ObjectGetter(args);
+            }
+        },
+        ArrayExpression: function(M) {
+            return new AST_Array({
+                start    : my_start_token(M),
+                end      : my_end_token(M),
+                elements : M.elements.map(function(elem){
+                    return elem === null ? new AST_Hole() : from_moz(elem);
+                })
+            });
+        },
+        ObjectExpression: function(M) {
+            return new AST_Object({
+                start      : my_start_token(M),
+                end        : my_end_token(M),
+                properties : M.properties.map(function(prop){
+                    prop.type = "Property";
+                    return from_moz(prop)
+                })
+            });
+        },
+        SequenceExpression: function(M) {
+            return AST_Seq.from_array(M.expressions.map(from_moz));
+        },
+        MemberExpression: function(M) {
+            return new (M.computed ? AST_Sub : AST_Dot)({
+                start      : my_start_token(M),
+                end        : my_end_token(M),
+                property   : M.computed ? from_moz(M.property) : M.property.name,
+                expression : from_moz(M.object)
+            });
+        },
+        SwitchCase: function(M) {
+            return new (M.test ? AST_Case : AST_Default)({
+                start      : my_start_token(M),
+                end        : my_end_token(M),
+                expression : from_moz(M.test),
+                body       : M.consequent.map(from_moz)
+            });
+        },
+        VariableDeclaration: function(M) {
+            return new (M.kind === "const" ? AST_Const : AST_Var)({
+                start       : my_start_token(M),
+                end         : my_end_token(M),
+                definitions : M.declarations.map(from_moz)
+            });
+        },
+        Literal: function(M) {
+            var val = M.value, args = {
+                start  : my_start_token(M),
+                end    : my_end_token(M)
+            };
+            if (val === null) return new AST_Null(args);
+            switch (typeof val) {
+              case "string":
+                args.value = val;
+                return new AST_String(args);
+              case "number":
+                args.value = val;
+                return new AST_Number(args);
+              case "boolean":
+                return new (val ? AST_True : AST_False)(args);
+              default:
+                var rx = M.regex;
+                if (rx && rx.pattern) {
+                    // RegExpLiteral as per ESTree AST spec
+                    args.value = new RegExp(rx.pattern, rx.flags).toString();
+                } else {
+                    // support legacy RegExp
+                    args.value = M.regex && M.raw ? M.raw : val;
+                }
+                return new AST_RegExp(args);
+            }
+        },
+        Identifier: function(M) {
+            var p = FROM_MOZ_STACK[FROM_MOZ_STACK.length - 2];
+            return new (  p.type == "LabeledStatement" ? AST_Label
+                        : p.type == "VariableDeclarator" && p.id === M ? (p.kind == "const" ? AST_SymbolConst : AST_SymbolVar)
+                        : p.type == "FunctionExpression" ? (p.id === M ? AST_SymbolLambda : AST_SymbolFunarg)
+                        : p.type == "FunctionDeclaration" ? (p.id === M ? AST_SymbolDefun : AST_SymbolFunarg)
+                        : p.type == "CatchClause" ? AST_SymbolCatch
+                        : p.type == "BreakStatement" || p.type == "ContinueStatement" ? AST_LabelRef
+                        : AST_SymbolRef)({
+                            start : my_start_token(M),
+                            end   : my_end_token(M),
+                            name  : M.name
+                        });
+        }
+    };
+
+    MOZ_TO_ME.UpdateExpression =
+    MOZ_TO_ME.UnaryExpression = function To_Moz_Unary(M) {
+        var prefix = "prefix" in M ? M.prefix
+            : M.type == "UnaryExpression" ? true : false;
+        return new (prefix ? AST_UnaryPrefix : AST_UnaryPostfix)({
+            start      : my_start_token(M),
+            end        : my_end_token(M),
+            operator   : M.operator,
+            expression : from_moz(M.argument)
+        });
+    };
+
+    map("EmptyStatement", AST_EmptyStatement);
+    map("BlockStatement", AST_BlockStatement, "body@body");
+    map("IfStatement", AST_If, "test>condition, consequent>body, alternate>alternative");
+    map("LabeledStatement", AST_LabeledStatement, "label>label, body>body");
+    map("BreakStatement", AST_Break, "label>label");
+    map("ContinueStatement", AST_Continue, "label>label");
+    map("WithStatement", AST_With, "object>expression, body>body");
+    map("SwitchStatement", AST_Switch, "discriminant>expression, cases@body");
+    map("ReturnStatement", AST_Return, "argument>value");
+    map("ThrowStatement", AST_Throw, "argument>value");
+    map("WhileStatement", AST_While, "test>condition, body>body");
+    map("DoWhileStatement", AST_Do, "test>condition, body>body");
+    map("ForStatement", AST_For, "init>init, test>condition, update>step, body>body");
+    map("ForInStatement", AST_ForIn, "left>init, right>object, body>body");
+    map("DebuggerStatement", AST_Debugger);
+    map("VariableDeclarator", AST_VarDef, "id>name, init>value");
+    map("CatchClause", AST_Catch, "param>argname, body%body");
+
+    map("ThisExpression", AST_This);
+    map("BinaryExpression", AST_Binary, "operator=operator, left>left, right>right");
+    map("LogicalExpression", AST_Binary, "operator=operator, left>left, right>right");
+    map("AssignmentExpression", AST_Assign, "operator=operator, left>left, right>right");
+    map("ConditionalExpression", AST_Conditional, "test>condition, consequent>consequent, alternate>alternative");
+    map("NewExpression", AST_New, "callee>expression, arguments@args");
+    map("CallExpression", AST_Call, "callee>expression, arguments@args");
+
+    def_to_moz(AST_Toplevel, function To_Moz_Program(M) {
+        return {
+            type: "Program",
+            body: M.body.map(to_moz)
+        };
+    });
+
+    def_to_moz(AST_Defun, function To_Moz_FunctionDeclaration(M) {
+        return {
+            type: "FunctionDeclaration",
+            id: to_moz(M.name),
+            params: M.argnames.map(to_moz),
+            body: to_moz_block(M)
+        }
+    });
+
+    def_to_moz(AST_Function, function To_Moz_FunctionExpression(M) {
+        return {
+            type: "FunctionExpression",
+            id: to_moz(M.name),
+            params: M.argnames.map(to_moz),
+            body: to_moz_block(M)
+        }
+    });
+
+    def_to_moz(AST_Directive, function To_Moz_Directive(M) {
+        return {
+            type: "ExpressionStatement",
+            expression: {
+                type: "Literal",
+                value: M.value
+            }
+        };
+    });
+
+    def_to_moz(AST_SimpleStatement, function To_Moz_ExpressionStatement(M) {
+        return {
+            type: "ExpressionStatement",
+            expression: to_moz(M.body)
+        };
+    });
+
+    def_to_moz(AST_SwitchBranch, function To_Moz_SwitchCase(M) {
+        return {
+            type: "SwitchCase",
+            test: to_moz(M.expression),
+            consequent: M.body.map(to_moz)
+        };
+    });
+
+    def_to_moz(AST_Try, function To_Moz_TryStatement(M) {
+        return {
+            type: "TryStatement",
+            block: to_moz_block(M),
+            handler: to_moz(M.bcatch),
+            guardedHandlers: [],
+            finalizer: to_moz(M.bfinally)
+        };
+    });
+
+    def_to_moz(AST_Catch, function To_Moz_CatchClause(M) {
+        return {
+            type: "CatchClause",
+            param: to_moz(M.argname),
+            guard: null,
+            body: to_moz_block(M)
+        };
+    });
+
+    def_to_moz(AST_Definitions, function To_Moz_VariableDeclaration(M) {
+        return {
+            type: "VariableDeclaration",
+            kind: M instanceof AST_Const ? "const" : "var",
+            declarations: M.definitions.map(to_moz)
+        };
+    });
+
+    def_to_moz(AST_Seq, function To_Moz_SequenceExpression(M) {
+        return {
+            type: "SequenceExpression",
+            expressions: M.to_array().map(to_moz)
+        };
+    });
+
+    def_to_moz(AST_PropAccess, function To_Moz_MemberExpression(M) {
+        var isComputed = M instanceof AST_Sub;
+        return {
+            type: "MemberExpression",
+            object: to_moz(M.expression),
+            computed: isComputed,
+            property: isComputed ? to_moz(M.property) : {type: "Identifier", name: M.property}
+        };
+    });
+
+    def_to_moz(AST_Unary, function To_Moz_Unary(M) {
+        return {
+            type: M.operator == "++" || M.operator == "--" ? "UpdateExpression" : "UnaryExpression",
+            operator: M.operator,
+            prefix: M instanceof AST_UnaryPrefix,
+            argument: to_moz(M.expression)
+        };
+    });
+
+    def_to_moz(AST_Binary, function To_Moz_BinaryExpression(M) {
+        return {
+            type: M.operator == "&&" || M.operator == "||" ? "LogicalExpression" : "BinaryExpression",
+            left: to_moz(M.left),
+            operator: M.operator,
+            right: to_moz(M.right)
+        };
+    });
+
+    def_to_moz(AST_Array, function To_Moz_ArrayExpression(M) {
+        return {
+            type: "ArrayExpression",
+            elements: M.elements.map(to_moz)
+        };
+    });
+
+    def_to_moz(AST_Object, function To_Moz_ObjectExpression(M) {
+        return {
+            type: "ObjectExpression",
+            properties: M.properties.map(to_moz)
+        };
+    });
+
+    def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) {
+        var key = (
+            is_identifier(M.key)
+            ? {type: "Identifier", name: M.key}
+            : {type: "Literal", value: M.key}
+        );
+        var kind;
+        if (M instanceof AST_ObjectKeyVal) {
+            kind = "init";
+        } else
+        if (M instanceof AST_ObjectGetter) {
+            kind = "get";
+        } else
+        if (M instanceof AST_ObjectSetter) {
+            kind = "set";
+        }
+        return {
+            type: "Property",
+            kind: kind,
+            key: key,
+            value: to_moz(M.value)
+        };
+    });
+
+    def_to_moz(AST_Symbol, function To_Moz_Identifier(M) {
+        var def = M.definition();
+        return {
+            type: "Identifier",
+            name: def ? def.mangled_name || def.name : M.name
+        };
+    });
+
+    def_to_moz(AST_RegExp, function To_Moz_RegExpLiteral(M) {
+        var value = M.value;
+        return {
+            type: "Literal",
+            value: value,
+            raw: value.toString(),
+            regex: {
+                pattern: value.source,
+                flags: value.toString().match(/[gimuy]*$/)[0]
+            }
+        };
+    });
+
+    def_to_moz(AST_Constant, function To_Moz_Literal(M) {
+        var value = M.value;
+        if (typeof value === 'number' && (value < 0 || (value === 0 && 1 / value < 0))) {
+            return {
+                type: "UnaryExpression",
+                operator: "-",
+                prefix: true,
+                argument: {
+                    type: "Literal",
+                    value: -value,
+                    raw: M.start.raw
+                }
+            };
+        }
+        return {
+            type: "Literal",
+            value: value,
+            raw: M.start.raw
+        };
+    });
+
+    def_to_moz(AST_Atom, function To_Moz_Atom(M) {
+        return {
+            type: "Identifier",
+            name: String(M.value)
+        };
+    });
+
+    AST_Boolean.DEFMETHOD("to_mozilla_ast", AST_Constant.prototype.to_mozilla_ast);
+    AST_Null.DEFMETHOD("to_mozilla_ast", AST_Constant.prototype.to_mozilla_ast);
+    AST_Hole.DEFMETHOD("to_mozilla_ast", function To_Moz_ArrayHole() { return null });
+
+    AST_Block.DEFMETHOD("to_mozilla_ast", AST_BlockStatement.prototype.to_mozilla_ast);
+    AST_Lambda.DEFMETHOD("to_mozilla_ast", AST_Function.prototype.to_mozilla_ast);
+
+    /* -----[ tools ]----- */
+
+    function raw_token(moznode) {
+        if (moznode.type == "Literal") {
+            return moznode.raw != null ? moznode.raw : moznode.value + "";
+        }
+    }
+
+    function my_start_token(moznode) {
+        var loc = moznode.loc, start = loc && loc.start;
+        var range = moznode.range;
+        return new AST_Token({
+            file    : loc && loc.source,
+            line    : start && start.line,
+            col     : start && start.column,
+            pos     : range ? range[0] : moznode.start,
+            endline : start && start.line,
+            endcol  : start && start.column,
+            endpos  : range ? range[0] : moznode.start,
+            raw     : raw_token(moznode),
+        });
+    };
+
+    function my_end_token(moznode) {
+        var loc = moznode.loc, end = loc && loc.end;
+        var range = moznode.range;
+        return new AST_Token({
+            file    : loc && loc.source,
+            line    : end && end.line,
+            col     : end && end.column,
+            pos     : range ? range[1] : moznode.end,
+            endline : end && end.line,
+            endcol  : end && end.column,
+            endpos  : range ? range[1] : moznode.end,
+            raw     : raw_token(moznode),
+        });
+    };
+
+    function map(moztype, mytype, propmap) {
+        var moz_to_me = "function From_Moz_" + moztype + "(M){\n";
+        moz_to_me += "return new U2." + mytype.name + "({\n" +
+            "start: my_start_token(M),\n" +
+            "end: my_end_token(M)";
+
+        var me_to_moz = "function To_Moz_" + moztype + "(M){\n";
+        me_to_moz += "return {\n" +
+            "type: " + JSON.stringify(moztype);
+
+        if (propmap) propmap.split(/\s*,\s*/).forEach(function(prop){
+            var m = /([a-z0-9$_]+)(=|@|>|%)([a-z0-9$_]+)/i.exec(prop);
+            if (!m) throw new Error("Can't understand property map: " + prop);
+            var moz = m[1], how = m[2], my = m[3];
+            moz_to_me += ",\n" + my + ": ";
+            me_to_moz += ",\n" + moz + ": ";
+            switch (how) {
+                case "@":
+                    moz_to_me += "M." + moz + ".map(from_moz)";
+                    me_to_moz += "M." +  my + ".map(to_moz)";
+                    break;
+                case ">":
+                    moz_to_me += "from_moz(M." + moz + ")";
+                    me_to_moz += "to_moz(M." + my + ")";
+                    break;
+                case "=":
+                    moz_to_me += "M." + moz;
+                    me_to_moz += "M." + my;
+                    break;
+                case "%":
+                    moz_to_me += "from_moz(M." + moz + ").body";
+                    me_to_moz += "to_moz_block(M)";
+                    break;
+                default:
+                    throw new Error("Can't understand operator in propmap: " + prop);
+            }
+        });
+
+        moz_to_me += "\n})\n}";
+        me_to_moz += "\n}\n}";
+
+        //moz_to_me = parse(moz_to_me).print_to_string({ beautify: true });
+        //me_to_moz = parse(me_to_moz).print_to_string({ beautify: true });
+        //console.log(moz_to_me);
+
+        moz_to_me = new Function("U2", "my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")(
+            exports, my_start_token, my_end_token, from_moz
+        );
+        me_to_moz = new Function("to_moz", "to_moz_block", "return(" + me_to_moz + ")")(
+            to_moz, to_moz_block
+        );
+        MOZ_TO_ME[moztype] = moz_to_me;
+        def_to_moz(mytype, me_to_moz);
+    };
+
+    var FROM_MOZ_STACK = null;
+
+    function from_moz(node) {
+        FROM_MOZ_STACK.push(node);
+        var ret = node != null ? MOZ_TO_ME[node.type](node) : null;
+        FROM_MOZ_STACK.pop();
+        return ret;
+    };
+
+    AST_Node.from_mozilla_ast = function(node){
+        var save_stack = FROM_MOZ_STACK;
+        FROM_MOZ_STACK = [];
+        var ast = from_moz(node);
+        FROM_MOZ_STACK = save_stack;
+        return ast;
+    };
+
+    function set_moz_loc(mynode, moznode, myparent) {
+        var start = mynode.start;
+        var end = mynode.end;
+        if (start.pos != null && end.endpos != null) {
+            moznode.range = [start.pos, end.endpos];
+        }
+        if (start.line) {
+            moznode.loc = {
+                start: {line: start.line, column: start.col},
+                end: end.endline ? {line: end.endline, column: end.endcol} : null
+            };
+            if (start.file) {
+                moznode.loc.source = start.file;
+            }
+        }
+        return moznode;
+    };
+
+    function def_to_moz(mytype, handler) {
+        mytype.DEFMETHOD("to_mozilla_ast", function() {
+            return set_moz_loc(this, handler(this));
+        });
+    };
+
+    function to_moz(node) {
+        return node != null ? node.to_mozilla_ast() : null;
+    };
+
+    function to_moz_block(node) {
+        return {
+            type: "BlockStatement",
+            body: node.body.map(to_moz)
+        };
+    };
+
+})();
diff --git a/node_modules/uglify-js/lib/output.js b/node_modules/uglify-js/lib/output.js
new file mode 100644
index 000000000..9ac50c08a
--- /dev/null
+++ b/node_modules/uglify-js/lib/output.js
@@ -0,0 +1,1424 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+var EXPECT_DIRECTIVE = /^$|[;{][\s\n]*$/;
+
+function is_some_comments(comment) {
+    // multiline comment
+    return comment.type == "comment2" && /@preserve|@license|@cc_on/i.test(comment.value);
+}
+
+function OutputStream(options) {
+
+    options = defaults(options, {
+        ascii_only       : false,
+        beautify         : false,
+        bracketize       : false,
+        comments         : false,
+        indent_level     : 4,
+        indent_start     : 0,
+        inline_script    : true,
+        keep_quoted_props: false,
+        max_line_len     : false,
+        preamble         : null,
+        preserve_line    : false,
+        quote_keys       : false,
+        quote_style      : 0,
+        screw_ie8        : true,
+        semicolons       : true,
+        shebang          : true,
+        source_map       : null,
+        space_colon      : true,
+        unescape_regexps : false,
+        width            : 80,
+        wrap_iife        : false,
+    }, true);
+
+    // Convert comment option to RegExp if neccessary and set up comments filter
+    var comment_filter = return_false; // Default case, throw all comments away
+    if (options.comments) {
+        var comments = options.comments;
+        if (typeof options.comments === "string" && /^\/.*\/[a-zA-Z]*$/.test(options.comments)) {
+            var regex_pos = options.comments.lastIndexOf("/");
+            comments = new RegExp(
+                options.comments.substr(1, regex_pos - 1),
+                options.comments.substr(regex_pos + 1)
+            );
+        }
+        if (comments instanceof RegExp) {
+            comment_filter = function(comment) {
+                return comment.type != "comment5" && comments.test(comment.value);
+            };
+        }
+        else if (typeof comments === "function") {
+            comment_filter = function(comment) {
+                return comment.type != "comment5" && comments(this, comment);
+            };
+        }
+        else if (comments === "some") {
+            comment_filter = is_some_comments;
+        } else { // NOTE includes "all" option
+            comment_filter = return_true;
+        }
+    }
+
+    var indentation = 0;
+    var current_col = 0;
+    var current_line = 1;
+    var current_pos = 0;
+    var OUTPUT = "";
+
+    function to_ascii(str, identifier) {
+        return str.replace(/[\u0000-\u001f\u007f-\uffff]/g, function(ch) {
+            var code = ch.charCodeAt(0).toString(16);
+            if (code.length <= 2 && !identifier) {
+                while (code.length < 2) code = "0" + code;
+                return "\\x" + code;
+            } else {
+                while (code.length < 4) code = "0" + code;
+                return "\\u" + code;
+            }
+        });
+    };
+
+    function make_string(str, quote) {
+        var dq = 0, sq = 0;
+        str = str.replace(/[\\\b\f\n\r\v\t\x22\x27\u2028\u2029\0\ufeff]/g,
+          function(s, i){
+            switch (s) {
+              case '"': ++dq; return '"';
+              case "'": ++sq; return "'";
+              case "\\": return "\\\\";
+              case "\n": return "\\n";
+              case "\r": return "\\r";
+              case "\t": return "\\t";
+              case "\b": return "\\b";
+              case "\f": return "\\f";
+              case "\x0B": return options.screw_ie8 ? "\\v" : "\\x0B";
+              case "\u2028": return "\\u2028";
+              case "\u2029": return "\\u2029";
+              case "\ufeff": return "\\ufeff";
+              case "\0":
+                  return /[0-7]/.test(str.charAt(i+1)) ? "\\x00" : "\\0";
+            }
+            return s;
+        });
+        function quote_single() {
+            return "'" + str.replace(/\x27/g, "\\'") + "'";
+        }
+        function quote_double() {
+            return '"' + str.replace(/\x22/g, '\\"') + '"';
+        }
+        if (options.ascii_only) str = to_ascii(str);
+        switch (options.quote_style) {
+          case 1:
+            return quote_single();
+          case 2:
+            return quote_double();
+          case 3:
+            return quote == "'" ? quote_single() : quote_double();
+          default:
+            return dq > sq ? quote_single() : quote_double();
+        }
+    };
+
+    function encode_string(str, quote) {
+        var ret = make_string(str, quote);
+        if (options.inline_script) {
+            ret = ret.replace(/<\x2fscript([>\/\t\n\f\r ])/gi, "<\\/script$1");
+            ret = ret.replace(/\x3c!--/g, "\\x3c!--");
+            ret = ret.replace(/--\x3e/g, "--\\x3e");
+        }
+        return ret;
+    };
+
+    function make_name(name) {
+        name = name.toString();
+        if (options.ascii_only)
+            name = to_ascii(name, true);
+        return name;
+    };
+
+    function make_indent(back) {
+        return repeat_string(" ", options.indent_start + indentation - back * options.indent_level);
+    };
+
+    /* -----[ beautification/minification ]----- */
+
+    var might_need_space = false;
+    var might_need_semicolon = false;
+    var might_add_newline = 0;
+    var last = null;
+
+    function last_char() {
+        return last.charAt(last.length - 1);
+    };
+
+    var ensure_line_len = options.max_line_len ? function() {
+        if (current_col > options.max_line_len) {
+            if (might_add_newline) {
+                var left = OUTPUT.slice(0, might_add_newline);
+                var right = OUTPUT.slice(might_add_newline);
+                OUTPUT = left + "\n" + right;
+                current_line++;
+                current_pos++;
+                current_col = right.length;
+            }
+            if (current_col > options.max_line_len) {
+                AST_Node.warn("Output exceeds {max_line_len} characters", options);
+            }
+        }
+        might_add_newline = 0;
+    } : noop;
+
+    var requireSemicolonChars = makePredicate("( [ + * / - , .");
+
+    function print(str) {
+        str = String(str);
+        var ch = str.charAt(0);
+        if (might_need_semicolon) {
+            might_need_semicolon = false;
+
+            if ((!ch || ";}".indexOf(ch) < 0) && !/[;]$/.test(last)) {
+                if (options.semicolons || requireSemicolonChars(ch)) {
+                    OUTPUT += ";";
+                    current_col++;
+                    current_pos++;
+                } else {
+                    ensure_line_len();
+                    OUTPUT += "\n";
+                    current_pos++;
+                    current_line++;
+                    current_col = 0;
+
+                    if (/^\s+$/.test(str)) {
+                        // reset the semicolon flag, since we didn't print one
+                        // now and might still have to later
+                        might_need_semicolon = true;
+                    }
+                }
+
+                if (!options.beautify)
+                    might_need_space = false;
+            }
+        }
+
+        if (!options.beautify && options.preserve_line && stack[stack.length - 1]) {
+            var target_line = stack[stack.length - 1].start.line;
+            while (current_line < target_line) {
+                ensure_line_len();
+                OUTPUT += "\n";
+                current_pos++;
+                current_line++;
+                current_col = 0;
+                might_need_space = false;
+            }
+        }
+
+        if (might_need_space) {
+            var prev = last_char();
+            if ((is_identifier_char(prev)
+                    && (is_identifier_char(ch) || ch == "\\"))
+                || (ch == "/" && ch == prev)
+                || ((ch == "+" || ch == "-") && ch == last))
+            {
+                OUTPUT += " ";
+                current_col++;
+                current_pos++;
+            }
+            might_need_space = false;
+        }
+        OUTPUT += str;
+        current_pos += str.length;
+        var a = str.split(/\r?\n/), n = a.length - 1;
+        current_line += n;
+        current_col += a[0].length;
+        if (n > 0) {
+            ensure_line_len();
+            current_col = a[n].length;
+        }
+        last = str;
+    };
+
+    var space = options.beautify ? function() {
+        print(" ");
+    } : function() {
+        might_need_space = true;
+    };
+
+    var indent = options.beautify ? function(half) {
+        if (options.beautify) {
+            print(make_indent(half ? 0.5 : 0));
+        }
+    } : noop;
+
+    var with_indent = options.beautify ? function(col, cont) {
+        if (col === true) col = next_indent();
+        var save_indentation = indentation;
+        indentation = col;
+        var ret = cont();
+        indentation = save_indentation;
+        return ret;
+    } : function(col, cont) { return cont() };
+
+    var newline = options.beautify ? function() {
+        print("\n");
+    } : options.max_line_len ? function() {
+        ensure_line_len();
+        might_add_newline = OUTPUT.length;
+    } : noop;
+
+    var semicolon = options.beautify ? function() {
+        print(";");
+    } : function() {
+        might_need_semicolon = true;
+    };
+
+    function force_semicolon() {
+        might_need_semicolon = false;
+        print(";");
+    };
+
+    function next_indent() {
+        return indentation + options.indent_level;
+    };
+
+    function with_block(cont) {
+        var ret;
+        print("{");
+        newline();
+        with_indent(next_indent(), function(){
+            ret = cont();
+        });
+        indent();
+        print("}");
+        return ret;
+    };
+
+    function with_parens(cont) {
+        print("(");
+        //XXX: still nice to have that for argument lists
+        //var ret = with_indent(current_col, cont);
+        var ret = cont();
+        print(")");
+        return ret;
+    };
+
+    function with_square(cont) {
+        print("[");
+        //var ret = with_indent(current_col, cont);
+        var ret = cont();
+        print("]");
+        return ret;
+    };
+
+    function comma() {
+        print(",");
+        space();
+    };
+
+    function colon() {
+        print(":");
+        if (options.space_colon) space();
+    };
+
+    var add_mapping = options.source_map ? function(token, name) {
+        try {
+            if (token) options.source_map.add(
+                token.file || "?",
+                current_line, current_col,
+                token.line, token.col,
+                (!name && token.type == "name") ? token.value : name
+            );
+        } catch(ex) {
+            AST_Node.warn("Couldn't figure out mapping for {file}:{line},{col} → {cline},{ccol} [{name}]", {
+                file: token.file,
+                line: token.line,
+                col: token.col,
+                cline: current_line,
+                ccol: current_col,
+                name: name || ""
+            })
+        }
+    } : noop;
+
+    function get() {
+        if (might_add_newline) {
+            ensure_line_len();
+        }
+        return OUTPUT;
+    };
+
+    var stack = [];
+    return {
+        get             : get,
+        toString        : get,
+        indent          : indent,
+        indentation     : function() { return indentation },
+        current_width   : function() { return current_col - indentation },
+        should_break    : function() { return options.width && this.current_width() >= options.width },
+        newline         : newline,
+        print           : print,
+        space           : space,
+        comma           : comma,
+        colon           : colon,
+        last            : function() { return last },
+        semicolon       : semicolon,
+        force_semicolon : force_semicolon,
+        to_ascii        : to_ascii,
+        print_name      : function(name) { print(make_name(name)) },
+        print_string    : function(str, quote, escape_directive) {
+            var encoded = encode_string(str, quote);
+            if (escape_directive === true && encoded.indexOf("\\") === -1) {
+                // Insert semicolons to break directive prologue
+                if (!EXPECT_DIRECTIVE.test(OUTPUT)) {
+                    force_semicolon();
+                }
+                force_semicolon();
+            }
+            print(encoded);
+        },
+        encode_string   : encode_string,
+        next_indent     : next_indent,
+        with_indent     : with_indent,
+        with_block      : with_block,
+        with_parens     : with_parens,
+        with_square     : with_square,
+        add_mapping     : add_mapping,
+        option          : function(opt) { return options[opt] },
+        comment_filter  : comment_filter,
+        line            : function() { return current_line },
+        col             : function() { return current_col },
+        pos             : function() { return current_pos },
+        push_node       : function(node) { stack.push(node) },
+        pop_node        : function() { return stack.pop() },
+        parent          : function(n) {
+            return stack[stack.length - 2 - (n || 0)];
+        }
+    };
+
+};
+
+/* -----[ code generators ]----- */
+
+(function(){
+
+    /* -----[ utils ]----- */
+
+    function DEFPRINT(nodetype, generator) {
+        nodetype.DEFMETHOD("_codegen", generator);
+    };
+
+    var use_asm = false;
+    var in_directive = false;
+
+    AST_Node.DEFMETHOD("print", function(stream, force_parens){
+        var self = this, generator = self._codegen, prev_use_asm = use_asm;
+        if (self instanceof AST_Directive && self.value == "use asm" && stream.parent() instanceof AST_Scope) {
+            use_asm = true;
+        }
+        function doit() {
+            self.add_comments(stream);
+            self.add_source_map(stream);
+            generator(self, stream);
+        }
+        stream.push_node(self);
+        if (force_parens || self.needs_parens(stream)) {
+            stream.with_parens(doit);
+        } else {
+            doit();
+        }
+        stream.pop_node();
+        if (self instanceof AST_Scope) {
+            use_asm = prev_use_asm;
+        }
+    });
+
+    AST_Node.DEFMETHOD("print_to_string", function(options){
+        var s = OutputStream(options);
+        if (!options) s._readonly = true;
+        this.print(s);
+        return s.get();
+    });
+
+    /* -----[ comments ]----- */
+
+    AST_Node.DEFMETHOD("add_comments", function(output){
+        if (output._readonly) return;
+        var self = this;
+        var start = self.start;
+        if (start && !start._comments_dumped) {
+            start._comments_dumped = true;
+            var comments = start.comments_before || [];
+
+            // XXX: ugly fix for https://github.com/mishoo/UglifyJS2/issues/112
+            //               and https://github.com/mishoo/UglifyJS2/issues/372
+            if (self instanceof AST_Exit && self.value) {
+                self.value.walk(new TreeWalker(function(node){
+                    if (node.start && node.start.comments_before) {
+                        comments = comments.concat(node.start.comments_before);
+                        node.start.comments_before = [];
+                    }
+                    if (node instanceof AST_Function ||
+                        node instanceof AST_Array ||
+                        node instanceof AST_Object)
+                    {
+                        return true; // don't go inside.
+                    }
+                }));
+            }
+
+            if (output.pos() == 0) {
+                if (comments.length > 0 && output.option("shebang") && comments[0].type == "comment5") {
+                    output.print("#!" + comments.shift().value + "\n");
+                    output.indent();
+                }
+                var preamble = output.option("preamble");
+                if (preamble) {
+                    output.print(preamble.replace(/\r\n?|[\n\u2028\u2029]|\s*$/g, "\n"));
+                }
+            }
+
+            comments = comments.filter(output.comment_filter, self);
+
+            // Keep single line comments after nlb, after nlb
+            if (!output.option("beautify") && comments.length > 0 &&
+                /comment[134]/.test(comments[0].type) &&
+                output.col() !== 0 && comments[0].nlb)
+            {
+                output.print("\n");
+            }
+
+            comments.forEach(function(c){
+                if (/comment[134]/.test(c.type)) {
+                    output.print("//" + c.value + "\n");
+                    output.indent();
+                }
+                else if (c.type == "comment2") {
+                    output.print("/*" + c.value + "*/");
+                    if (start.nlb) {
+                        output.print("\n");
+                        output.indent();
+                    } else {
+                        output.space();
+                    }
+                }
+            });
+        }
+    });
+
+    /* -----[ PARENTHESES ]----- */
+
+    function PARENS(nodetype, func) {
+        if (Array.isArray(nodetype)) {
+            nodetype.forEach(function(nodetype){
+                PARENS(nodetype, func);
+            });
+        } else {
+            nodetype.DEFMETHOD("needs_parens", func);
+        }
+    };
+
+    PARENS(AST_Node, function(){
+        return false;
+    });
+
+    // a function expression needs parens around it when it's provably
+    // the first token to appear in a statement.
+    PARENS(AST_Function, function(output){
+        if (first_in_statement(output)) {
+            return true;
+        }
+
+        if (output.option('wrap_iife')) {
+            var p = output.parent();
+            return p instanceof AST_Call && p.expression === this;
+        }
+
+        return false;
+    });
+
+    // same goes for an object literal, because otherwise it would be
+    // interpreted as a block of code.
+    PARENS(AST_Object, function(output){
+        return first_in_statement(output);
+    });
+
+    PARENS(AST_Unary, function(output){
+        var p = output.parent();
+        return p instanceof AST_PropAccess && p.expression === this
+            || p instanceof AST_Call && p.expression === this;
+    });
+
+    PARENS(AST_Seq, function(output){
+        var p = output.parent();
+        return p instanceof AST_Call             // (foo, bar)() or foo(1, (2, 3), 4)
+            || p instanceof AST_Unary            // !(foo, bar, baz)
+            || p instanceof AST_Binary           // 1 + (2, 3) + 4 ==> 8
+            || p instanceof AST_VarDef           // var a = (1, 2), b = a + a; ==> b == 4
+            || p instanceof AST_PropAccess       // (1, {foo:2}).foo or (1, {foo:2})["foo"] ==> 2
+            || p instanceof AST_Array            // [ 1, (2, 3), 4 ] ==> [ 1, 3, 4 ]
+            || p instanceof AST_ObjectProperty   // { foo: (1, 2) }.foo ==> 2
+            || p instanceof AST_Conditional      /* (false, true) ? (a = 10, b = 20) : (c = 30)
+                                                  * ==> 20 (side effect, set a := 10 and b := 20) */
+        ;
+    });
+
+    PARENS(AST_Binary, function(output){
+        var p = output.parent();
+        // (foo && bar)()
+        if (p instanceof AST_Call && p.expression === this)
+            return true;
+        // typeof (foo && bar)
+        if (p instanceof AST_Unary)
+            return true;
+        // (foo && bar)["prop"], (foo && bar).prop
+        if (p instanceof AST_PropAccess && p.expression === this)
+            return true;
+        // this deals with precedence: 3 * (2 + 1)
+        if (p instanceof AST_Binary) {
+            var po = p.operator, pp = PRECEDENCE[po];
+            var so = this.operator, sp = PRECEDENCE[so];
+            if (pp > sp
+                || (pp == sp
+                    && this === p.right)) {
+                return true;
+            }
+        }
+    });
+
+    PARENS(AST_PropAccess, function(output){
+        var p = output.parent();
+        if (p instanceof AST_New && p.expression === this) {
+            // i.e. new (foo.bar().baz)
+            //
+            // if there's one call into this subtree, then we need
+            // parens around it too, otherwise the call will be
+            // interpreted as passing the arguments to the upper New
+            // expression.
+            try {
+                this.walk(new TreeWalker(function(node){
+                    if (node instanceof AST_Call) throw p;
+                }));
+            } catch(ex) {
+                if (ex !== p) throw ex;
+                return true;
+            }
+        }
+    });
+
+    PARENS(AST_Call, function(output){
+        var p = output.parent(), p1;
+        if (p instanceof AST_New && p.expression === this)
+            return true;
+
+        // workaround for Safari bug.
+        // https://bugs.webkit.org/show_bug.cgi?id=123506
+        return this.expression instanceof AST_Function
+            && p instanceof AST_PropAccess
+            && p.expression === this
+            && (p1 = output.parent(1)) instanceof AST_Assign
+            && p1.left === p;
+    });
+
+    PARENS(AST_New, function(output){
+        var p = output.parent();
+        if (!need_constructor_parens(this, output)
+            && (p instanceof AST_PropAccess // (new Date).getTime(), (new Date)["getTime"]()
+                || p instanceof AST_Call && p.expression === this)) // (new foo)(bar)
+            return true;
+    });
+
+    PARENS(AST_Number, function(output){
+        var p = output.parent();
+        if (p instanceof AST_PropAccess && p.expression === this) {
+            var value = this.getValue();
+            if (value < 0 || /^0/.test(make_num(value))) {
+                return true;
+            }
+        }
+    });
+
+    PARENS([ AST_Assign, AST_Conditional ], function (output){
+        var p = output.parent();
+        // !(a = false) → true
+        if (p instanceof AST_Unary)
+            return true;
+        // 1 + (a = 2) + 3 → 6, side effect setting a = 2
+        if (p instanceof AST_Binary && !(p instanceof AST_Assign))
+            return true;
+        // (a = func)() —or— new (a = Object)()
+        if (p instanceof AST_Call && p.expression === this)
+            return true;
+        // (a = foo) ? bar : baz
+        if (p instanceof AST_Conditional && p.condition === this)
+            return true;
+        // (a = foo)["prop"] —or— (a = foo).prop
+        if (p instanceof AST_PropAccess && p.expression === this)
+            return true;
+    });
+
+    /* -----[ PRINTERS ]----- */
+
+    DEFPRINT(AST_Directive, function(self, output){
+        output.print_string(self.value, self.quote);
+        output.semicolon();
+    });
+    DEFPRINT(AST_Debugger, function(self, output){
+        output.print("debugger");
+        output.semicolon();
+    });
+
+    /* -----[ statements ]----- */
+
+    function display_body(body, is_toplevel, output, allow_directives) {
+        var last = body.length - 1;
+        in_directive = allow_directives;
+        body.forEach(function(stmt, i){
+            if (in_directive === true && !(stmt instanceof AST_Directive ||
+                stmt instanceof AST_EmptyStatement ||
+                (stmt instanceof AST_SimpleStatement && stmt.body instanceof AST_String)
+            )) {
+                in_directive = false;
+            }
+            if (!(stmt instanceof AST_EmptyStatement)) {
+                output.indent();
+                stmt.print(output);
+                if (!(i == last && is_toplevel)) {
+                    output.newline();
+                    if (is_toplevel) output.newline();
+                }
+            }
+            if (in_directive === true &&
+                stmt instanceof AST_SimpleStatement &&
+                stmt.body instanceof AST_String
+            ) {
+                in_directive = false;
+            }
+        });
+        in_directive = false;
+    };
+
+    AST_StatementWithBody.DEFMETHOD("_do_print_body", function(output){
+        force_statement(this.body, output);
+    });
+
+    DEFPRINT(AST_Statement, function(self, output){
+        self.body.print(output);
+        output.semicolon();
+    });
+    DEFPRINT(AST_Toplevel, function(self, output){
+        display_body(self.body, true, output, true);
+        output.print("");
+    });
+    DEFPRINT(AST_LabeledStatement, function(self, output){
+        self.label.print(output);
+        output.colon();
+        self.body.print(output);
+    });
+    DEFPRINT(AST_SimpleStatement, function(self, output){
+        self.body.print(output);
+        output.semicolon();
+    });
+    function print_bracketed(body, output, allow_directives) {
+        if (body.length > 0) output.with_block(function(){
+            display_body(body, false, output, allow_directives);
+        });
+        else output.print("{}");
+    };
+    DEFPRINT(AST_BlockStatement, function(self, output){
+        print_bracketed(self.body, output);
+    });
+    DEFPRINT(AST_EmptyStatement, function(self, output){
+        output.semicolon();
+    });
+    DEFPRINT(AST_Do, function(self, output){
+        output.print("do");
+        output.space();
+        make_block(self.body, output);
+        output.space();
+        output.print("while");
+        output.space();
+        output.with_parens(function(){
+            self.condition.print(output);
+        });
+        output.semicolon();
+    });
+    DEFPRINT(AST_While, function(self, output){
+        output.print("while");
+        output.space();
+        output.with_parens(function(){
+            self.condition.print(output);
+        });
+        output.space();
+        self._do_print_body(output);
+    });
+    DEFPRINT(AST_For, function(self, output){
+        output.print("for");
+        output.space();
+        output.with_parens(function(){
+            if (self.init) {
+                if (self.init instanceof AST_Definitions) {
+                    self.init.print(output);
+                } else {
+                    parenthesize_for_noin(self.init, output, true);
+                }
+                output.print(";");
+                output.space();
+            } else {
+                output.print(";");
+            }
+            if (self.condition) {
+                self.condition.print(output);
+                output.print(";");
+                output.space();
+            } else {
+                output.print(";");
+            }
+            if (self.step) {
+                self.step.print(output);
+            }
+        });
+        output.space();
+        self._do_print_body(output);
+    });
+    DEFPRINT(AST_ForIn, function(self, output){
+        output.print("for");
+        output.space();
+        output.with_parens(function(){
+            self.init.print(output);
+            output.space();
+            output.print("in");
+            output.space();
+            self.object.print(output);
+        });
+        output.space();
+        self._do_print_body(output);
+    });
+    DEFPRINT(AST_With, function(self, output){
+        output.print("with");
+        output.space();
+        output.with_parens(function(){
+            self.expression.print(output);
+        });
+        output.space();
+        self._do_print_body(output);
+    });
+
+    /* -----[ functions ]----- */
+    AST_Lambda.DEFMETHOD("_do_print", function(output, nokeyword){
+        var self = this;
+        if (!nokeyword) {
+            output.print("function");
+        }
+        if (self.name) {
+            output.space();
+            self.name.print(output);
+        }
+        output.with_parens(function(){
+            self.argnames.forEach(function(arg, i){
+                if (i) output.comma();
+                arg.print(output);
+            });
+        });
+        output.space();
+        print_bracketed(self.body, output, true);
+    });
+    DEFPRINT(AST_Lambda, function(self, output){
+        self._do_print(output);
+    });
+
+    /* -----[ exits ]----- */
+    AST_Exit.DEFMETHOD("_do_print", function(output, kind){
+        output.print(kind);
+        if (this.value) {
+            output.space();
+            this.value.print(output);
+        }
+        output.semicolon();
+    });
+    DEFPRINT(AST_Return, function(self, output){
+        self._do_print(output, "return");
+    });
+    DEFPRINT(AST_Throw, function(self, output){
+        self._do_print(output, "throw");
+    });
+
+    /* -----[ loop control ]----- */
+    AST_LoopControl.DEFMETHOD("_do_print", function(output, kind){
+        output.print(kind);
+        if (this.label) {
+            output.space();
+            this.label.print(output);
+        }
+        output.semicolon();
+    });
+    DEFPRINT(AST_Break, function(self, output){
+        self._do_print(output, "break");
+    });
+    DEFPRINT(AST_Continue, function(self, output){
+        self._do_print(output, "continue");
+    });
+
+    /* -----[ if ]----- */
+    function make_then(self, output) {
+        var b = self.body;
+        if (output.option("bracketize")
+            || !output.option("screw_ie8") && b instanceof AST_Do)
+            return make_block(b, output);
+        // The squeezer replaces "block"-s that contain only a single
+        // statement with the statement itself; technically, the AST
+        // is correct, but this can create problems when we output an
+        // IF having an ELSE clause where the THEN clause ends in an
+        // IF *without* an ELSE block (then the outer ELSE would refer
+        // to the inner IF).  This function checks for this case and
+        // adds the block brackets if needed.
+        if (!b) return output.force_semicolon();
+        while (true) {
+            if (b instanceof AST_If) {
+                if (!b.alternative) {
+                    make_block(self.body, output);
+                    return;
+                }
+                b = b.alternative;
+            }
+            else if (b instanceof AST_StatementWithBody) {
+                b = b.body;
+            }
+            else break;
+        }
+        force_statement(self.body, output);
+    };
+    DEFPRINT(AST_If, function(self, output){
+        output.print("if");
+        output.space();
+        output.with_parens(function(){
+            self.condition.print(output);
+        });
+        output.space();
+        if (self.alternative) {
+            make_then(self, output);
+            output.space();
+            output.print("else");
+            output.space();
+            if (self.alternative instanceof AST_If)
+                self.alternative.print(output);
+            else
+                force_statement(self.alternative, output);
+        } else {
+            self._do_print_body(output);
+        }
+    });
+
+    /* -----[ switch ]----- */
+    DEFPRINT(AST_Switch, function(self, output){
+        output.print("switch");
+        output.space();
+        output.with_parens(function(){
+            self.expression.print(output);
+        });
+        output.space();
+        var last = self.body.length - 1;
+        if (last < 0) output.print("{}");
+        else output.with_block(function(){
+            self.body.forEach(function(branch, i){
+                output.indent(true);
+                branch.print(output);
+                if (i < last && branch.body.length > 0)
+                    output.newline();
+            });
+        });
+    });
+    AST_SwitchBranch.DEFMETHOD("_do_print_body", function(output){
+        output.newline();
+        this.body.forEach(function(stmt){
+            output.indent();
+            stmt.print(output);
+            output.newline();
+        });
+    });
+    DEFPRINT(AST_Default, function(self, output){
+        output.print("default:");
+        self._do_print_body(output);
+    });
+    DEFPRINT(AST_Case, function(self, output){
+        output.print("case");
+        output.space();
+        self.expression.print(output);
+        output.print(":");
+        self._do_print_body(output);
+    });
+
+    /* -----[ exceptions ]----- */
+    DEFPRINT(AST_Try, function(self, output){
+        output.print("try");
+        output.space();
+        print_bracketed(self.body, output);
+        if (self.bcatch) {
+            output.space();
+            self.bcatch.print(output);
+        }
+        if (self.bfinally) {
+            output.space();
+            self.bfinally.print(output);
+        }
+    });
+    DEFPRINT(AST_Catch, function(self, output){
+        output.print("catch");
+        output.space();
+        output.with_parens(function(){
+            self.argname.print(output);
+        });
+        output.space();
+        print_bracketed(self.body, output);
+    });
+    DEFPRINT(AST_Finally, function(self, output){
+        output.print("finally");
+        output.space();
+        print_bracketed(self.body, output);
+    });
+
+    /* -----[ var/const ]----- */
+    AST_Definitions.DEFMETHOD("_do_print", function(output, kind){
+        output.print(kind);
+        output.space();
+        this.definitions.forEach(function(def, i){
+            if (i) output.comma();
+            def.print(output);
+        });
+        var p = output.parent();
+        var in_for = p instanceof AST_For || p instanceof AST_ForIn;
+        var avoid_semicolon = in_for && p.init === this;
+        if (!avoid_semicolon)
+            output.semicolon();
+    });
+    DEFPRINT(AST_Var, function(self, output){
+        self._do_print(output, "var");
+    });
+    DEFPRINT(AST_Const, function(self, output){
+        self._do_print(output, "const");
+    });
+
+    function parenthesize_for_noin(node, output, noin) {
+        if (!noin) node.print(output);
+        else try {
+            // need to take some precautions here:
+            //    https://github.com/mishoo/UglifyJS2/issues/60
+            node.walk(new TreeWalker(function(node){
+                if (node instanceof AST_Binary && node.operator == "in")
+                    throw output;
+            }));
+            node.print(output);
+        } catch(ex) {
+            if (ex !== output) throw ex;
+            node.print(output, true);
+        }
+    };
+
+    DEFPRINT(AST_VarDef, function(self, output){
+        self.name.print(output);
+        if (self.value) {
+            output.space();
+            output.print("=");
+            output.space();
+            var p = output.parent(1);
+            var noin = p instanceof AST_For || p instanceof AST_ForIn;
+            parenthesize_for_noin(self.value, output, noin);
+        }
+    });
+
+    /* -----[ other expressions ]----- */
+    DEFPRINT(AST_Call, function(self, output){
+        self.expression.print(output);
+        if (self instanceof AST_New && !need_constructor_parens(self, output))
+            return;
+        output.with_parens(function(){
+            self.args.forEach(function(expr, i){
+                if (i) output.comma();
+                expr.print(output);
+            });
+        });
+    });
+    DEFPRINT(AST_New, function(self, output){
+        output.print("new");
+        output.space();
+        AST_Call.prototype._codegen(self, output);
+    });
+
+    AST_Seq.DEFMETHOD("_do_print", function(output){
+        this.car.print(output);
+        if (this.cdr) {
+            output.comma();
+            if (output.should_break()) {
+                output.newline();
+                output.indent();
+            }
+            this.cdr.print(output);
+        }
+    });
+    DEFPRINT(AST_Seq, function(self, output){
+        self._do_print(output);
+        // var p = output.parent();
+        // if (p instanceof AST_Statement) {
+        //     output.with_indent(output.next_indent(), function(){
+        //         self._do_print(output);
+        //     });
+        // } else {
+        //     self._do_print(output);
+        // }
+    });
+    DEFPRINT(AST_Dot, function(self, output){
+        var expr = self.expression;
+        expr.print(output);
+        if (expr instanceof AST_Number && expr.getValue() >= 0) {
+            if (!/[xa-f.)]/i.test(output.last())) {
+                output.print(".");
+            }
+        }
+        output.print(".");
+        // the name after dot would be mapped about here.
+        output.add_mapping(self.end);
+        output.print_name(self.property);
+    });
+    DEFPRINT(AST_Sub, function(self, output){
+        self.expression.print(output);
+        output.print("[");
+        self.property.print(output);
+        output.print("]");
+    });
+    DEFPRINT(AST_UnaryPrefix, function(self, output){
+        var op = self.operator;
+        output.print(op);
+        if (/^[a-z]/i.test(op)
+            || (/[+-]$/.test(op)
+                && self.expression instanceof AST_UnaryPrefix
+                && /^[+-]/.test(self.expression.operator))) {
+            output.space();
+        }
+        self.expression.print(output);
+    });
+    DEFPRINT(AST_UnaryPostfix, function(self, output){
+        self.expression.print(output);
+        output.print(self.operator);
+    });
+    DEFPRINT(AST_Binary, function(self, output){
+        var op = self.operator;
+        self.left.print(output);
+        if (op[0] == ">" /* ">>" ">>>" ">" ">=" */
+            && self.left instanceof AST_UnaryPostfix
+            && self.left.operator == "--") {
+            // space is mandatory to avoid outputting -->
+            output.print(" ");
+        } else {
+            // the space is optional depending on "beautify"
+            output.space();
+        }
+        output.print(op);
+        if ((op == "<" || op == "<<")
+            && self.right instanceof AST_UnaryPrefix
+            && self.right.operator == "!"
+            && self.right.expression instanceof AST_UnaryPrefix
+            && self.right.expression.operator == "--") {
+            // space is mandatory to avoid outputting <!--
+            output.print(" ");
+        } else {
+            // the space is optional depending on "beautify"
+            output.space();
+        }
+        self.right.print(output);
+    });
+    DEFPRINT(AST_Conditional, function(self, output){
+        self.condition.print(output);
+        output.space();
+        output.print("?");
+        output.space();
+        self.consequent.print(output);
+        output.space();
+        output.colon();
+        self.alternative.print(output);
+    });
+
+    /* -----[ literals ]----- */
+    DEFPRINT(AST_Array, function(self, output){
+        output.with_square(function(){
+            var a = self.elements, len = a.length;
+            if (len > 0) output.space();
+            a.forEach(function(exp, i){
+                if (i) output.comma();
+                exp.print(output);
+                // If the final element is a hole, we need to make sure it
+                // doesn't look like a trailing comma, by inserting an actual
+                // trailing comma.
+                if (i === len - 1 && exp instanceof AST_Hole)
+                  output.comma();
+            });
+            if (len > 0) output.space();
+        });
+    });
+    DEFPRINT(AST_Object, function(self, output){
+        if (self.properties.length > 0) output.with_block(function(){
+            self.properties.forEach(function(prop, i){
+                if (i) {
+                    output.print(",");
+                    output.newline();
+                }
+                output.indent();
+                prop.print(output);
+            });
+            output.newline();
+        });
+        else output.print("{}");
+    });
+    DEFPRINT(AST_ObjectKeyVal, function(self, output){
+        var key = self.key;
+        var quote = self.quote;
+        if (output.option("quote_keys")) {
+            output.print_string(key + "");
+        } else if ((typeof key == "number"
+                    || !output.option("beautify")
+                    && +key + "" == key)
+                   && parseFloat(key) >= 0) {
+            output.print(make_num(key));
+        } else if (RESERVED_WORDS(key) ? output.option("screw_ie8") : is_identifier_string(key)) {
+            if (quote && output.option("keep_quoted_props")) {
+                output.print_string(key, quote);
+            } else {
+                output.print_name(key);
+            }
+        } else {
+            output.print_string(key, quote);
+        }
+        output.colon();
+        self.value.print(output);
+    });
+    DEFPRINT(AST_ObjectSetter, function(self, output){
+        output.print("set");
+        output.space();
+        self.key.print(output);
+        self.value._do_print(output, true);
+    });
+    DEFPRINT(AST_ObjectGetter, function(self, output){
+        output.print("get");
+        output.space();
+        self.key.print(output);
+        self.value._do_print(output, true);
+    });
+    DEFPRINT(AST_Symbol, function(self, output){
+        var def = self.definition();
+        output.print_name(def ? def.mangled_name || def.name : self.name);
+    });
+    DEFPRINT(AST_Hole, noop);
+    DEFPRINT(AST_This, function(self, output){
+        output.print("this");
+    });
+    DEFPRINT(AST_Constant, function(self, output){
+        output.print(self.getValue());
+    });
+    DEFPRINT(AST_String, function(self, output){
+        output.print_string(self.getValue(), self.quote, in_directive);
+    });
+    DEFPRINT(AST_Number, function(self, output){
+        if (use_asm && self.start && self.start.raw != null) {
+            output.print(self.start.raw);
+        } else {
+            output.print(make_num(self.getValue()));
+        }
+    });
+
+    function regexp_safe_literal(code) {
+        return [
+            0x5c   , // \
+            0x2f   , // /
+            0x2e   , // .
+            0x2b   , // +
+            0x2a   , // *
+            0x3f   , // ?
+            0x28   , // (
+            0x29   , // )
+            0x5b   , // [
+            0x5d   , // ]
+            0x7b   , // {
+            0x7d   , // }
+            0x24   , // $
+            0x5e   , // ^
+            0x3a   , // :
+            0x7c   , // |
+            0x21   , // !
+            0x0a   , // \n
+            0x0d   , // \r
+            0x00   , // \0
+            0xfeff , // Unicode BOM
+            0x2028 , // unicode "line separator"
+            0x2029 , // unicode "paragraph separator"
+        ].indexOf(code) < 0;
+    };
+
+    DEFPRINT(AST_RegExp, function(self, output){
+        var str = self.getValue().toString();
+        if (output.option("ascii_only")) {
+            str = output.to_ascii(str);
+        } else if (output.option("unescape_regexps")) {
+            str = str.split("\\\\").map(function(str){
+                return str.replace(/\\u[0-9a-fA-F]{4}|\\x[0-9a-fA-F]{2}/g, function(s){
+                    var code = parseInt(s.substr(2), 16);
+                    return regexp_safe_literal(code) ? String.fromCharCode(code) : s;
+                });
+            }).join("\\\\");
+        }
+        output.print(str);
+        var p = output.parent();
+        if (p instanceof AST_Binary && /^in/.test(p.operator) && p.left === self)
+            output.print(" ");
+    });
+
+    function force_statement(stat, output) {
+        if (output.option("bracketize")) {
+            make_block(stat, output);
+        } else {
+            if (!stat || stat instanceof AST_EmptyStatement)
+                output.force_semicolon();
+            else
+                stat.print(output);
+        }
+    };
+
+    // self should be AST_New.  decide if we want to show parens or not.
+    function need_constructor_parens(self, output) {
+        // Always print parentheses with arguments
+        if (self.args.length > 0) return true;
+
+        return output.option("beautify");
+    };
+
+    function best_of(a) {
+        var best = a[0], len = best.length;
+        for (var i = 1; i < a.length; ++i) {
+            if (a[i].length < len) {
+                best = a[i];
+                len = best.length;
+            }
+        }
+        return best;
+    };
+
+    function make_num(num) {
+        var str = num.toString(10), a = [ str.replace(/^0\./, ".").replace('e+', 'e') ], m;
+        if (Math.floor(num) === num) {
+            if (num >= 0) {
+                a.push("0x" + num.toString(16).toLowerCase(), // probably pointless
+                       "0" + num.toString(8)); // same.
+            } else {
+                a.push("-0x" + (-num).toString(16).toLowerCase(), // probably pointless
+                       "-0" + (-num).toString(8)); // same.
+            }
+            if ((m = /^(.*?)(0+)$/.exec(num))) {
+                a.push(m[1] + "e" + m[2].length);
+            }
+        } else if ((m = /^0?\.(0+)(.*)$/.exec(num))) {
+            a.push(m[2] + "e-" + (m[1].length + m[2].length),
+                   str.substr(str.indexOf(".")));
+        }
+        return best_of(a);
+    };
+
+    function make_block(stmt, output) {
+        if (!stmt || stmt instanceof AST_EmptyStatement)
+            output.print("{}");
+        else if (stmt instanceof AST_BlockStatement)
+            stmt.print(output);
+        else output.with_block(function(){
+            output.indent();
+            stmt.print(output);
+            output.newline();
+        });
+    };
+
+    /* -----[ source map generators ]----- */
+
+    function DEFMAP(nodetype, generator) {
+        nodetype.DEFMETHOD("add_source_map", function(stream){
+            generator(this, stream);
+        });
+    };
+
+    // We could easily add info for ALL nodes, but it seems to me that
+    // would be quite wasteful, hence this noop in the base class.
+    DEFMAP(AST_Node, noop);
+
+    function basic_sourcemap_gen(self, output) {
+        output.add_mapping(self.start);
+    };
+
+    // XXX: I'm not exactly sure if we need it for all of these nodes,
+    // or if we should add even more.
+
+    DEFMAP(AST_Directive, basic_sourcemap_gen);
+    DEFMAP(AST_Debugger, basic_sourcemap_gen);
+    DEFMAP(AST_Symbol, basic_sourcemap_gen);
+    DEFMAP(AST_Jump, basic_sourcemap_gen);
+    DEFMAP(AST_StatementWithBody, basic_sourcemap_gen);
+    DEFMAP(AST_LabeledStatement, noop); // since the label symbol will mark it
+    DEFMAP(AST_Lambda, basic_sourcemap_gen);
+    DEFMAP(AST_Switch, basic_sourcemap_gen);
+    DEFMAP(AST_SwitchBranch, basic_sourcemap_gen);
+    DEFMAP(AST_BlockStatement, basic_sourcemap_gen);
+    DEFMAP(AST_Toplevel, noop);
+    DEFMAP(AST_New, basic_sourcemap_gen);
+    DEFMAP(AST_Try, basic_sourcemap_gen);
+    DEFMAP(AST_Catch, basic_sourcemap_gen);
+    DEFMAP(AST_Finally, basic_sourcemap_gen);
+    DEFMAP(AST_Definitions, basic_sourcemap_gen);
+    DEFMAP(AST_Constant, basic_sourcemap_gen);
+    DEFMAP(AST_ObjectSetter, function(self, output){
+        output.add_mapping(self.start, self.key.name);
+    });
+    DEFMAP(AST_ObjectGetter, function(self, output){
+        output.add_mapping(self.start, self.key.name);
+    });
+    DEFMAP(AST_ObjectProperty, function(self, output){
+        output.add_mapping(self.start, self.key);
+    });
+
+})();
diff --git a/node_modules/uglify-js/lib/parse.js b/node_modules/uglify-js/lib/parse.js
new file mode 100644
index 000000000..c34e13db6
--- /dev/null
+++ b/node_modules/uglify-js/lib/parse.js
@@ -0,0 +1,1572 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+    Parser based on parse-js (http://marijn.haverbeke.nl/parse-js/).
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+var KEYWORDS = 'break case catch const continue debugger default delete do else finally for function if in instanceof new return switch throw try typeof var void while with';
+var KEYWORDS_ATOM = 'false null true';
+var RESERVED_WORDS = 'abstract boolean byte char class double enum export extends final float goto implements import int interface let long native package private protected public short static super synchronized this throws transient volatile yield'
+    + " " + KEYWORDS_ATOM + " " + KEYWORDS;
+var KEYWORDS_BEFORE_EXPRESSION = 'return new delete throw else case';
+
+KEYWORDS = makePredicate(KEYWORDS);
+RESERVED_WORDS = makePredicate(RESERVED_WORDS);
+KEYWORDS_BEFORE_EXPRESSION = makePredicate(KEYWORDS_BEFORE_EXPRESSION);
+KEYWORDS_ATOM = makePredicate(KEYWORDS_ATOM);
+
+var OPERATOR_CHARS = makePredicate(characters("+-*&%=<>!?|~^"));
+
+var RE_HEX_NUMBER = /^0x[0-9a-f]+$/i;
+var RE_OCT_NUMBER = /^0[0-7]+$/;
+
+var OPERATORS = makePredicate([
+    "in",
+    "instanceof",
+    "typeof",
+    "new",
+    "void",
+    "delete",
+    "++",
+    "--",
+    "+",
+    "-",
+    "!",
+    "~",
+    "&",
+    "|",
+    "^",
+    "*",
+    "/",
+    "%",
+    ">>",
+    "<<",
+    ">>>",
+    "<",
+    ">",
+    "<=",
+    ">=",
+    "==",
+    "===",
+    "!=",
+    "!==",
+    "?",
+    "=",
+    "+=",
+    "-=",
+    "/=",
+    "*=",
+    "%=",
+    ">>=",
+    "<<=",
+    ">>>=",
+    "|=",
+    "^=",
+    "&=",
+    "&&",
+    "||"
+]);
+
+var WHITESPACE_CHARS = makePredicate(characters(" \u00a0\n\r\t\f\u000b\u200b\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000\uFEFF"));
+
+var NEWLINE_CHARS = makePredicate(characters("\n\r\u2028\u2029"));
+
+var PUNC_BEFORE_EXPRESSION = makePredicate(characters("[{(,.;:"));
+
+var PUNC_CHARS = makePredicate(characters("[]{}(),;:"));
+
+var REGEXP_MODIFIERS = makePredicate(characters("gmsiy"));
+
+/* -----[ Tokenizer ]----- */
+
+// regexps adapted from http://xregexp.com/plugins/#unicode
+var UNICODE = {
+    letter: new RegExp("[\\u0041-\\u005A\\u0061-\\u007A\\u00AA\\u00B5\\u00BA\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02C1\\u02C6-\\u02D1\\u02E0-\\u02E4\\u02EC\\u02EE\\u0370-\\u0374\\u0376\\u0377\\u037A-\\u037D\\u037F\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03F5\\u03F7-\\u0481\\u048A-\\u052F\\u0531-\\u0556\\u0559\\u0561-\\u0587\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0620-\\u064A\\u066E\\u066F\\u0671-\\u06D3\\u06D5\\u06E5\\u06E6\\u06EE\\u06EF\\u06FA-\\u06FC\\u06FF\\u0710\\u0712-\\u072F\\u074D-\\u07A5\\u07B1\\u07CA-\\u07EA\\u07F4\\u07F5\\u07FA\\u0800-\\u0815\\u081A\\u0824\\u0828\\u0840-\\u0858\\u08A0-\\u08B2\\u0904-\\u0939\\u093D\\u0950\\u0958-\\u0961\\u0971-\\u0980\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BD\\u09CE\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AD0\\u0AE0\\u0AE1\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B71\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BD0\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C39\\u0C3D\\u0C58\\u0C59\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBD\\u0CDE\\u0CE0\\u0CE1\\u0CF1\\u0CF2\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D3A\\u0D3D\\u0D4E\\u0D60\\u0D61\\u0D7A-\\u0D7F\\u0D85-\\u0D96\\u0D9A-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0E01-\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E46\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD-\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0EDC-\\u0EDF\\u0F00\\u0F40-\\u0F47\\u0F49-\\u0F6C\\u0F88-\\u0F8C\\u1000-\\u102A\\u103F\\u1050-\\u1055\\u105A-\\u105D\\u1061\\u1065\\u1066\\u106E-\\u1070\\u1075-\\u1081\\u108E\\u10A0-\\u10C5\\u10C7\\u10CD\\u10D0-\\u10FA\\u10FC-\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u1380-\\u138F\\u13A0-\\u13F4\\u1401-\\u166C\\u166F-\\u167F\\u1681-\\u169A\\u16A0-\\u16EA\\u16EE-\\u16F8\\u1700-\\u170C\\u170E-\\u1711\\u1720-\\u1731\\u1740-\\u1751\\u1760-\\u176C\\u176E-\\u1770\\u1780-\\u17B3\\u17D7\\u17DC\\u1820-\\u1877\\u1880-\\u18A8\\u18AA\\u18B0-\\u18F5\\u1900-\\u191E\\u1950-\\u196D\\u1970-\\u1974\\u1980-\\u19AB\\u19C1-\\u19C7\\u1A00-\\u1A16\\u1A20-\\u1A54\\u1AA7\\u1B05-\\u1B33\\u1B45-\\u1B4B\\u1B83-\\u1BA0\\u1BAE\\u1BAF\\u1BBA-\\u1BE5\\u1C00-\\u1C23\\u1C4D-\\u1C4F\\u1C5A-\\u1C7D\\u1CE9-\\u1CEC\\u1CEE-\\u1CF1\\u1CF5\\u1CF6\\u1D00-\\u1DBF\\u1E00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2071\\u207F\\u2090-\\u209C\\u2102\\u2107\\u210A-\\u2113\\u2115\\u2119-\\u211D\\u2124\\u2126\\u2128\\u212A-\\u212D\\u212F-\\u2139\\u213C-\\u213F\\u2145-\\u2149\\u214E\\u2160-\\u2188\\u2C00-\\u2C2E\\u2C30-\\u2C5E\\u2C60-\\u2CE4\\u2CEB-\\u2CEE\\u2CF2\\u2CF3\\u2D00-\\u2D25\\u2D27\\u2D2D\\u2D30-\\u2D67\\u2D6F\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u2E2F\\u3005-\\u3007\\u3021-\\u3029\\u3031-\\u3035\\u3038-\\u303C\\u3041-\\u3096\\u309D-\\u309F\\u30A1-\\u30FA\\u30FC-\\u30FF\\u3105-\\u312D\\u3131-\\u318E\\u31A0-\\u31BA\\u31F0-\\u31FF\\u3400-\\u4DB5\\u4E00-\\u9FCC\\uA000-\\uA48C\\uA4D0-\\uA4FD\\uA500-\\uA60C\\uA610-\\uA61F\\uA62A\\uA62B\\uA640-\\uA66E\\uA67F-\\uA69D\\uA6A0-\\uA6EF\\uA717-\\uA71F\\uA722-\\uA788\\uA78B-\\uA78E\\uA790-\\uA7AD\\uA7B0\\uA7B1\\uA7F7-\\uA801\\uA803-\\uA805\\uA807-\\uA80A\\uA80C-\\uA822\\uA840-\\uA873\\uA882-\\uA8B3\\uA8F2-\\uA8F7\\uA8FB\\uA90A-\\uA925\\uA930-\\uA946\\uA960-\\uA97C\\uA984-\\uA9B2\\uA9CF\\uA9E0-\\uA9E4\\uA9E6-\\uA9EF\\uA9FA-\\uA9FE\\uAA00-\\uAA28\\uAA40-\\uAA42\\uAA44-\\uAA4B\\uAA60-\\uAA76\\uAA7A\\uAA7E-\\uAAAF\\uAAB1\\uAAB5\\uAAB6\\uAAB9-\\uAABD\\uAAC0\\uAAC2\\uAADB-\\uAADD\\uAAE0-\\uAAEA\\uAAF2-\\uAAF4\\uAB01-\\uAB06\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26\\uAB28-\\uAB2E\\uAB30-\\uAB5A\\uAB5C-\\uAB5F\\uAB64\\uAB65\\uABC0-\\uABE2\\uAC00-\\uD7A3\\uD7B0-\\uD7C6\\uD7CB-\\uD7FB\\uF900-\\uFA6D\\uFA70-\\uFAD9\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFB1D\\uFB1F-\\uFB28\\uFB2A-\\uFB36\\uFB38-\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46-\\uFBB1\\uFBD3-\\uFD3D\\uFD50-\\uFD8F\\uFD92-\\uFDC7\\uFDF0-\\uFDFB\\uFE70-\\uFE74\\uFE76-\\uFEFC\\uFF21-\\uFF3A\\uFF41-\\uFF5A\\uFF66-\\uFFBE\\uFFC2-\\uFFC7\\uFFCA-\\uFFCF\\uFFD2-\\uFFD7\\uFFDA-\\uFFDC]"),
+    digit: new RegExp("[\\u0030-\\u0039\\u0660-\\u0669\\u06F0-\\u06F9\\u07C0-\\u07C9\\u0966-\\u096F\\u09E6-\\u09EF\\u0A66-\\u0A6F\\u0AE6-\\u0AEF\\u0B66-\\u0B6F\\u0BE6-\\u0BEF\\u0C66-\\u0C6F\\u0CE6-\\u0CEF\\u0D66-\\u0D6F\\u0DE6-\\u0DEF\\u0E50-\\u0E59\\u0ED0-\\u0ED9\\u0F20-\\u0F29\\u1040-\\u1049\\u1090-\\u1099\\u17E0-\\u17E9\\u1810-\\u1819\\u1946-\\u194F\\u19D0-\\u19D9\\u1A80-\\u1A89\\u1A90-\\u1A99\\u1B50-\\u1B59\\u1BB0-\\u1BB9\\u1C40-\\u1C49\\u1C50-\\u1C59\\uA620-\\uA629\\uA8D0-\\uA8D9\\uA900-\\uA909\\uA9D0-\\uA9D9\\uA9F0-\\uA9F9\\uAA50-\\uAA59\\uABF0-\\uABF9\\uFF10-\\uFF19]"),
+    non_spacing_mark: new RegExp("[\\u0300-\\u036F\\u0483-\\u0487\\u0591-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u05C5\\u05C7\\u0610-\\u061A\\u064B-\\u065E\\u0670\\u06D6-\\u06DC\\u06DF-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0711\\u0730-\\u074A\\u07A6-\\u07B0\\u07EB-\\u07F3\\u0816-\\u0819\\u081B-\\u0823\\u0825-\\u0827\\u0829-\\u082D\\u0900-\\u0902\\u093C\\u0941-\\u0948\\u094D\\u0951-\\u0955\\u0962\\u0963\\u0981\\u09BC\\u09C1-\\u09C4\\u09CD\\u09E2\\u09E3\\u0A01\\u0A02\\u0A3C\\u0A41\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A51\\u0A70\\u0A71\\u0A75\\u0A81\\u0A82\\u0ABC\\u0AC1-\\u0AC5\\u0AC7\\u0AC8\\u0ACD\\u0AE2\\u0AE3\\u0B01\\u0B3C\\u0B3F\\u0B41-\\u0B44\\u0B4D\\u0B56\\u0B62\\u0B63\\u0B82\\u0BC0\\u0BCD\\u0C3E-\\u0C40\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C62\\u0C63\\u0CBC\\u0CBF\\u0CC6\\u0CCC\\u0CCD\\u0CE2\\u0CE3\\u0D41-\\u0D44\\u0D4D\\u0D62\\u0D63\\u0DCA\\u0DD2-\\u0DD4\\u0DD6\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F71-\\u0F7E\\u0F80-\\u0F84\\u0F86\\u0F87\\u0F90-\\u0F97\\u0F99-\\u0FBC\\u0FC6\\u102D-\\u1030\\u1032-\\u1037\\u1039\\u103A\\u103D\\u103E\\u1058\\u1059\\u105E-\\u1060\\u1071-\\u1074\\u1082\\u1085\\u1086\\u108D\\u109D\\u135F\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17B7-\\u17BD\\u17C6\\u17C9-\\u17D3\\u17DD\\u180B-\\u180D\\u18A9\\u1920-\\u1922\\u1927\\u1928\\u1932\\u1939-\\u193B\\u1A17\\u1A18\\u1A56\\u1A58-\\u1A5E\\u1A60\\u1A62\\u1A65-\\u1A6C\\u1A73-\\u1A7C\\u1A7F\\u1B00-\\u1B03\\u1B34\\u1B36-\\u1B3A\\u1B3C\\u1B42\\u1B6B-\\u1B73\\u1B80\\u1B81\\u1BA2-\\u1BA5\\u1BA8\\u1BA9\\u1C2C-\\u1C33\\u1C36\\u1C37\\u1CD0-\\u1CD2\\u1CD4-\\u1CE0\\u1CE2-\\u1CE8\\u1CED\\u1DC0-\\u1DE6\\u1DFD-\\u1DFF\\u20D0-\\u20DC\\u20E1\\u20E5-\\u20F0\\u2CEF-\\u2CF1\\u2DE0-\\u2DFF\\u302A-\\u302F\\u3099\\u309A\\uA66F\\uA67C\\uA67D\\uA6F0\\uA6F1\\uA802\\uA806\\uA80B\\uA825\\uA826\\uA8C4\\uA8E0-\\uA8F1\\uA926-\\uA92D\\uA947-\\uA951\\uA980-\\uA982\\uA9B3\\uA9B6-\\uA9B9\\uA9BC\\uAA29-\\uAA2E\\uAA31\\uAA32\\uAA35\\uAA36\\uAA43\\uAA4C\\uAAB0\\uAAB2-\\uAAB4\\uAAB7\\uAAB8\\uAABE\\uAABF\\uAAC1\\uABE5\\uABE8\\uABED\\uFB1E\\uFE00-\\uFE0F\\uFE20-\\uFE26]"),
+    space_combining_mark: new RegExp("[\\u0903\\u093E-\\u0940\\u0949-\\u094C\\u094E\\u0982\\u0983\\u09BE-\\u09C0\\u09C7\\u09C8\\u09CB\\u09CC\\u09D7\\u0A03\\u0A3E-\\u0A40\\u0A83\\u0ABE-\\u0AC0\\u0AC9\\u0ACB\\u0ACC\\u0B02\\u0B03\\u0B3E\\u0B40\\u0B47\\u0B48\\u0B4B\\u0B4C\\u0B57\\u0BBE\\u0BBF\\u0BC1\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCC\\u0BD7\\u0C01-\\u0C03\\u0C41-\\u0C44\\u0C82\\u0C83\\u0CBE\\u0CC0-\\u0CC4\\u0CC7\\u0CC8\\u0CCA\\u0CCB\\u0CD5\\u0CD6\\u0D02\\u0D03\\u0D3E-\\u0D40\\u0D46-\\u0D48\\u0D4A-\\u0D4C\\u0D57\\u0D82\\u0D83\\u0DCF-\\u0DD1\\u0DD8-\\u0DDF\\u0DF2\\u0DF3\\u0F3E\\u0F3F\\u0F7F\\u102B\\u102C\\u1031\\u1038\\u103B\\u103C\\u1056\\u1057\\u1062-\\u1064\\u1067-\\u106D\\u1083\\u1084\\u1087-\\u108C\\u108F\\u109A-\\u109C\\u17B6\\u17BE-\\u17C5\\u17C7\\u17C8\\u1923-\\u1926\\u1929-\\u192B\\u1930\\u1931\\u1933-\\u1938\\u19B0-\\u19C0\\u19C8\\u19C9\\u1A19-\\u1A1B\\u1A55\\u1A57\\u1A61\\u1A63\\u1A64\\u1A6D-\\u1A72\\u1B04\\u1B35\\u1B3B\\u1B3D-\\u1B41\\u1B43\\u1B44\\u1B82\\u1BA1\\u1BA6\\u1BA7\\u1BAA\\u1C24-\\u1C2B\\u1C34\\u1C35\\u1CE1\\u1CF2\\uA823\\uA824\\uA827\\uA880\\uA881\\uA8B4-\\uA8C3\\uA952\\uA953\\uA983\\uA9B4\\uA9B5\\uA9BA\\uA9BB\\uA9BD-\\uA9C0\\uAA2F\\uAA30\\uAA33\\uAA34\\uAA4D\\uAA7B\\uABE3\\uABE4\\uABE6\\uABE7\\uABE9\\uABEA\\uABEC]"),
+    connector_punctuation: new RegExp("[\\u005F\\u203F\\u2040\\u2054\\uFE33\\uFE34\\uFE4D-\\uFE4F\\uFF3F]")
+};
+
+function is_letter(code) {
+    return (code >= 97 && code <= 122)
+        || (code >= 65 && code <= 90)
+        || (code >= 0xaa && UNICODE.letter.test(String.fromCharCode(code)));
+};
+
+function is_digit(code) {
+    return code >= 48 && code <= 57;
+};
+
+function is_alphanumeric_char(code) {
+    return is_digit(code) || is_letter(code);
+};
+
+function is_unicode_digit(code) {
+    return UNICODE.digit.test(String.fromCharCode(code));
+}
+
+function is_unicode_combining_mark(ch) {
+    return UNICODE.non_spacing_mark.test(ch) || UNICODE.space_combining_mark.test(ch);
+};
+
+function is_unicode_connector_punctuation(ch) {
+    return UNICODE.connector_punctuation.test(ch);
+};
+
+function is_identifier(name) {
+    return !RESERVED_WORDS(name) && /^[a-z_$][a-z0-9_$]*$/i.test(name);
+};
+
+function is_identifier_start(code) {
+    return code == 36 || code == 95 || is_letter(code);
+};
+
+function is_identifier_char(ch) {
+    var code = ch.charCodeAt(0);
+    return is_identifier_start(code)
+        || is_digit(code)
+        || code == 8204 // \u200c: zero-width non-joiner <ZWNJ>
+        || code == 8205 // \u200d: zero-width joiner <ZWJ> (in my ECMA-262 PDF, this is also 200c)
+        || is_unicode_combining_mark(ch)
+        || is_unicode_connector_punctuation(ch)
+        || is_unicode_digit(code)
+    ;
+};
+
+function is_identifier_string(str){
+    return /^[a-z_$][a-z0-9_$]*$/i.test(str);
+};
+
+function parse_js_number(num) {
+    if (RE_HEX_NUMBER.test(num)) {
+        return parseInt(num.substr(2), 16);
+    } else if (RE_OCT_NUMBER.test(num)) {
+        return parseInt(num.substr(1), 8);
+    } else {
+        var val = parseFloat(num);
+        if (val == num) return val;
+    }
+};
+
+function JS_Parse_Error(message, filename, line, col, pos) {
+    this.message = message;
+    this.filename = filename;
+    this.line = line;
+    this.col = col;
+    this.pos = pos;
+};
+JS_Parse_Error.prototype = Object.create(Error.prototype);
+JS_Parse_Error.prototype.constructor = JS_Parse_Error;
+JS_Parse_Error.prototype.name = "SyntaxError";
+configure_error_stack(JS_Parse_Error);
+
+function js_error(message, filename, line, col, pos) {
+    throw new JS_Parse_Error(message, filename, line, col, pos);
+};
+
+function is_token(token, type, val) {
+    return token.type == type && (val == null || token.value == val);
+};
+
+var EX_EOF = {};
+
+function tokenizer($TEXT, filename, html5_comments, shebang) {
+
+    var S = {
+        text            : $TEXT,
+        filename        : filename,
+        pos             : 0,
+        tokpos          : 0,
+        line            : 1,
+        tokline         : 0,
+        col             : 0,
+        tokcol          : 0,
+        newline_before  : false,
+        regex_allowed   : false,
+        comments_before : [],
+        directives      : {},
+        directive_stack : []
+    };
+
+    function peek() { return S.text.charAt(S.pos); };
+
+    function next(signal_eof, in_string) {
+        var ch = S.text.charAt(S.pos++);
+        if (signal_eof && !ch)
+            throw EX_EOF;
+        if (NEWLINE_CHARS(ch)) {
+            S.newline_before = S.newline_before || !in_string;
+            ++S.line;
+            S.col = 0;
+            if (!in_string && ch == "\r" && peek() == "\n") {
+                // treat a \r\n sequence as a single \n
+                ++S.pos;
+                ch = "\n";
+            }
+        } else {
+            ++S.col;
+        }
+        return ch;
+    };
+
+    function forward(i) {
+        while (i-- > 0) next();
+    };
+
+    function looking_at(str) {
+        return S.text.substr(S.pos, str.length) == str;
+    };
+
+    function find_eol() {
+        var text = S.text;
+        for (var i = S.pos, n = S.text.length; i < n; ++i) {
+            var ch = text[i];
+            if (NEWLINE_CHARS(ch))
+                return i;
+        }
+        return -1;
+    };
+
+    function find(what, signal_eof) {
+        var pos = S.text.indexOf(what, S.pos);
+        if (signal_eof && pos == -1) throw EX_EOF;
+        return pos;
+    };
+
+    function start_token() {
+        S.tokline = S.line;
+        S.tokcol = S.col;
+        S.tokpos = S.pos;
+    };
+
+    var prev_was_dot = false;
+    function token(type, value, is_comment) {
+        S.regex_allowed = ((type == "operator" && !UNARY_POSTFIX(value)) ||
+                           (type == "keyword" && KEYWORDS_BEFORE_EXPRESSION(value)) ||
+                           (type == "punc" && PUNC_BEFORE_EXPRESSION(value)));
+        prev_was_dot = (type == "punc" && value == ".");
+        var ret = {
+            type    : type,
+            value   : value,
+            line    : S.tokline,
+            col     : S.tokcol,
+            pos     : S.tokpos,
+            endline : S.line,
+            endcol  : S.col,
+            endpos  : S.pos,
+            nlb     : S.newline_before,
+            file    : filename
+        };
+        if (/^(?:num|string|regexp)$/i.test(type)) {
+            ret.raw = $TEXT.substring(ret.pos, ret.endpos);
+        }
+        if (!is_comment) {
+            ret.comments_before = S.comments_before;
+            S.comments_before = [];
+            // make note of any newlines in the comments that came before
+            for (var i = 0, len = ret.comments_before.length; i < len; i++) {
+                ret.nlb = ret.nlb || ret.comments_before[i].nlb;
+            }
+        }
+        S.newline_before = false;
+        return new AST_Token(ret);
+    };
+
+    function skip_whitespace() {
+        while (WHITESPACE_CHARS(peek()))
+            next();
+    };
+
+    function read_while(pred) {
+        var ret = "", ch, i = 0;
+        while ((ch = peek()) && pred(ch, i++))
+            ret += next();
+        return ret;
+    };
+
+    function parse_error(err) {
+        js_error(err, filename, S.tokline, S.tokcol, S.tokpos);
+    };
+
+    function read_num(prefix) {
+        var has_e = false, after_e = false, has_x = false, has_dot = prefix == ".";
+        var num = read_while(function(ch, i){
+            var code = ch.charCodeAt(0);
+            switch (code) {
+              case 120: case 88: // xX
+                return has_x ? false : (has_x = true);
+              case 101: case 69: // eE
+                return has_x ? true : has_e ? false : (has_e = after_e = true);
+              case 45: // -
+                return after_e || (i == 0 && !prefix);
+              case 43: // +
+                return after_e;
+              case (after_e = false, 46): // .
+                return (!has_dot && !has_x && !has_e) ? (has_dot = true) : false;
+            }
+            return is_alphanumeric_char(code);
+        });
+        if (prefix) num = prefix + num;
+        if (RE_OCT_NUMBER.test(num) && next_token.has_directive("use strict")) {
+            parse_error("Legacy octal literals are not allowed in strict mode");
+        }
+        var valid = parse_js_number(num);
+        if (!isNaN(valid)) {
+            return token("num", valid);
+        } else {
+            parse_error("Invalid syntax: " + num);
+        }
+    };
+
+    function read_escaped_char(in_string) {
+        var ch = next(true, in_string);
+        switch (ch.charCodeAt(0)) {
+          case 110 : return "\n";
+          case 114 : return "\r";
+          case 116 : return "\t";
+          case 98  : return "\b";
+          case 118 : return "\u000b"; // \v
+          case 102 : return "\f";
+          case 120 : return String.fromCharCode(hex_bytes(2)); // \x
+          case 117 : return String.fromCharCode(hex_bytes(4)); // \u
+          case 10  : return ""; // newline
+          case 13  :            // \r
+            if (peek() == "\n") { // DOS newline
+                next(true, in_string);
+                return "";
+            }
+        }
+        if (ch >= "0" && ch <= "7")
+            return read_octal_escape_sequence(ch);
+        return ch;
+    };
+
+    function read_octal_escape_sequence(ch) {
+        // Read
+        var p = peek();
+        if (p >= "0" && p <= "7") {
+            ch += next(true);
+            if (ch[0] <= "3" && (p = peek()) >= "0" && p <= "7")
+                ch += next(true);
+        }
+
+        // Parse
+        if (ch === "0") return "\0";
+        if (ch.length > 0 && next_token.has_directive("use strict"))
+            parse_error("Legacy octal escape sequences are not allowed in strict mode");
+        return String.fromCharCode(parseInt(ch, 8));
+    }
+
+    function hex_bytes(n) {
+        var num = 0;
+        for (; n > 0; --n) {
+            var digit = parseInt(next(true), 16);
+            if (isNaN(digit))
+                parse_error("Invalid hex-character pattern in string");
+            num = (num << 4) | digit;
+        }
+        return num;
+    };
+
+    var read_string = with_eof_error("Unterminated string constant", function(quote_char){
+        var quote = next(), ret = "";
+        for (;;) {
+            var ch = next(true, true);
+            if (ch == "\\") ch = read_escaped_char(true);
+            else if (NEWLINE_CHARS(ch)) parse_error("Unterminated string constant");
+            else if (ch == quote) break;
+            ret += ch;
+        }
+        var tok = token("string", ret);
+        tok.quote = quote_char;
+        return tok;
+    });
+
+    function skip_line_comment(type) {
+        var regex_allowed = S.regex_allowed;
+        var i = find_eol(), ret;
+        if (i == -1) {
+            ret = S.text.substr(S.pos);
+            S.pos = S.text.length;
+        } else {
+            ret = S.text.substring(S.pos, i);
+            S.pos = i;
+        }
+        S.col = S.tokcol + (S.pos - S.tokpos);
+        S.comments_before.push(token(type, ret, true));
+        S.regex_allowed = regex_allowed;
+        return next_token;
+    };
+
+    var skip_multiline_comment = with_eof_error("Unterminated multiline comment", function(){
+        var regex_allowed = S.regex_allowed;
+        var i = find("*/", true);
+        var text = S.text.substring(S.pos, i).replace(/\r\n|\r|\u2028|\u2029/g, '\n');
+        // update stream position
+        forward(text.length /* doesn't count \r\n as 2 char while S.pos - i does */ + 2);
+        S.comments_before.push(token("comment2", text, true));
+        S.regex_allowed = regex_allowed;
+        return next_token;
+    });
+
+    function read_name() {
+        var backslash = false, name = "", ch, escaped = false, hex;
+        while ((ch = peek()) != null) {
+            if (!backslash) {
+                if (ch == "\\") escaped = backslash = true, next();
+                else if (is_identifier_char(ch)) name += next();
+                else break;
+            }
+            else {
+                if (ch != "u") parse_error("Expecting UnicodeEscapeSequence -- uXXXX");
+                ch = read_escaped_char();
+                if (!is_identifier_char(ch)) parse_error("Unicode char: " + ch.charCodeAt(0) + " is not valid in identifier");
+                name += ch;
+                backslash = false;
+            }
+        }
+        if (KEYWORDS(name) && escaped) {
+            hex = name.charCodeAt(0).toString(16).toUpperCase();
+            name = "\\u" + "0000".substr(hex.length) + hex + name.slice(1);
+        }
+        return name;
+    };
+
+    var read_regexp = with_eof_error("Unterminated regular expression", function(regexp){
+        var prev_backslash = false, ch, in_class = false;
+        while ((ch = next(true))) if (NEWLINE_CHARS(ch)) {
+            parse_error("Unexpected line terminator");
+        } else if (prev_backslash) {
+            regexp += "\\" + ch;
+            prev_backslash = false;
+        } else if (ch == "[") {
+            in_class = true;
+            regexp += ch;
+        } else if (ch == "]" && in_class) {
+            in_class = false;
+            regexp += ch;
+        } else if (ch == "/" && !in_class) {
+            break;
+        } else if (ch == "\\") {
+            prev_backslash = true;
+        } else {
+            regexp += ch;
+        }
+        var mods = read_name();
+        try {
+          return token("regexp", new RegExp(regexp, mods));
+        } catch(e) {
+          parse_error(e.message);
+        }
+    });
+
+    function read_operator(prefix) {
+        function grow(op) {
+            if (!peek()) return op;
+            var bigger = op + peek();
+            if (OPERATORS(bigger)) {
+                next();
+                return grow(bigger);
+            } else {
+                return op;
+            }
+        };
+        return token("operator", grow(prefix || next()));
+    };
+
+    function handle_slash() {
+        next();
+        switch (peek()) {
+          case "/":
+            next();
+            return skip_line_comment("comment1");
+          case "*":
+            next();
+            return skip_multiline_comment();
+        }
+        return S.regex_allowed ? read_regexp("") : read_operator("/");
+    };
+
+    function handle_dot() {
+        next();
+        return is_digit(peek().charCodeAt(0))
+            ? read_num(".")
+            : token("punc", ".");
+    };
+
+    function read_word() {
+        var word = read_name();
+        if (prev_was_dot) return token("name", word);
+        return KEYWORDS_ATOM(word) ? token("atom", word)
+            : !KEYWORDS(word) ? token("name", word)
+            : OPERATORS(word) ? token("operator", word)
+            : token("keyword", word);
+    };
+
+    function with_eof_error(eof_error, cont) {
+        return function(x) {
+            try {
+                return cont(x);
+            } catch(ex) {
+                if (ex === EX_EOF) parse_error(eof_error);
+                else throw ex;
+            }
+        };
+    };
+
+    function next_token(force_regexp) {
+        if (force_regexp != null)
+            return read_regexp(force_regexp);
+        if (shebang && S.pos == 0 && looking_at("#!")) {
+            start_token();
+            forward(2);
+            skip_line_comment("comment5");
+        }
+        for (;;) {
+            skip_whitespace();
+            start_token();
+            if (html5_comments) {
+                if (looking_at("<!--")) {
+                    forward(4);
+                    skip_line_comment("comment3");
+                    continue;
+                }
+                if (looking_at("-->") && S.newline_before) {
+                    forward(3);
+                    skip_line_comment("comment4");
+                    continue;
+                }
+            }
+            var ch = peek();
+            if (!ch) return token("eof");
+            var code = ch.charCodeAt(0);
+            switch (code) {
+              case 34: case 39: return read_string(ch);
+              case 46: return handle_dot();
+              case 47: {
+                  var tok = handle_slash();
+                  if (tok === next_token) continue;
+                  return tok;
+              }
+            }
+            if (is_digit(code)) return read_num();
+            if (PUNC_CHARS(ch)) return token("punc", next());
+            if (OPERATOR_CHARS(ch)) return read_operator();
+            if (code == 92 || is_identifier_start(code)) return read_word();
+            break;
+        }
+        parse_error("Unexpected character '" + ch + "'");
+    };
+
+    next_token.context = function(nc) {
+        if (nc) S = nc;
+        return S;
+    };
+
+    next_token.add_directive = function(directive) {
+        S.directive_stack[S.directive_stack.length - 1].push(directive);
+
+        if (S.directives[directive] === undefined) {
+            S.directives[directive] = 1;
+        } else {
+            S.directives[directive]++;
+        }
+    }
+
+    next_token.push_directives_stack = function() {
+        S.directive_stack.push([]);
+    }
+
+    next_token.pop_directives_stack = function() {
+        var directives = S.directive_stack[S.directive_stack.length - 1];
+
+        for (var i = 0; i < directives.length; i++) {
+            S.directives[directives[i]]--;
+        }
+
+        S.directive_stack.pop();
+    }
+
+    next_token.has_directive = function(directive) {
+        return S.directives[directive] !== undefined &&
+            S.directives[directive] > 0;
+    }
+
+    return next_token;
+
+};
+
+/* -----[ Parser (constants) ]----- */
+
+var UNARY_PREFIX = makePredicate([
+    "typeof",
+    "void",
+    "delete",
+    "--",
+    "++",
+    "!",
+    "~",
+    "-",
+    "+"
+]);
+
+var UNARY_POSTFIX = makePredicate([ "--", "++" ]);
+
+var ASSIGNMENT = makePredicate([ "=", "+=", "-=", "/=", "*=", "%=", ">>=", "<<=", ">>>=", "|=", "^=", "&=" ]);
+
+var PRECEDENCE = (function(a, ret){
+    for (var i = 0; i < a.length; ++i) {
+        var b = a[i];
+        for (var j = 0; j < b.length; ++j) {
+            ret[b[j]] = i + 1;
+        }
+    }
+    return ret;
+})(
+    [
+        ["||"],
+        ["&&"],
+        ["|"],
+        ["^"],
+        ["&"],
+        ["==", "===", "!=", "!=="],
+        ["<", ">", "<=", ">=", "in", "instanceof"],
+        [">>", "<<", ">>>"],
+        ["+", "-"],
+        ["*", "/", "%"]
+    ],
+    {}
+);
+
+var STATEMENTS_WITH_LABELS = array_to_hash([ "for", "do", "while", "switch" ]);
+
+var ATOMIC_START_TOKEN = array_to_hash([ "atom", "num", "string", "regexp", "name" ]);
+
+/* -----[ Parser ]----- */
+
+function parse($TEXT, options) {
+
+    options = defaults(options, {
+        bare_returns   : false,
+        cli            : false,
+        expression     : false,
+        filename       : null,
+        html5_comments : true,
+        shebang        : true,
+        strict         : false,
+        toplevel       : null,
+    });
+
+    var S = {
+        input         : (typeof $TEXT == "string"
+                         ? tokenizer($TEXT, options.filename,
+                                     options.html5_comments, options.shebang)
+                         : $TEXT),
+        token         : null,
+        prev          : null,
+        peeked        : null,
+        in_function   : 0,
+        in_directives : true,
+        in_loop       : 0,
+        labels        : []
+    };
+
+    S.token = next();
+
+    function is(type, value) {
+        return is_token(S.token, type, value);
+    };
+
+    function peek() { return S.peeked || (S.peeked = S.input()); };
+
+    function next() {
+        S.prev = S.token;
+        if (S.peeked) {
+            S.token = S.peeked;
+            S.peeked = null;
+        } else {
+            S.token = S.input();
+        }
+        S.in_directives = S.in_directives && (
+            S.token.type == "string" || is("punc", ";")
+        );
+        return S.token;
+    };
+
+    function prev() {
+        return S.prev;
+    };
+
+    function croak(msg, line, col, pos) {
+        var ctx = S.input.context();
+        js_error(msg,
+                 ctx.filename,
+                 line != null ? line : ctx.tokline,
+                 col != null ? col : ctx.tokcol,
+                 pos != null ? pos : ctx.tokpos);
+    };
+
+    function token_error(token, msg) {
+        croak(msg, token.line, token.col);
+    };
+
+    function unexpected(token) {
+        if (token == null)
+            token = S.token;
+        token_error(token, "Unexpected token: " + token.type + " (" + token.value + ")");
+    };
+
+    function expect_token(type, val) {
+        if (is(type, val)) {
+            return next();
+        }
+        token_error(S.token, "Unexpected token " + S.token.type + " «" + S.token.value + "»" + ", expected " + type + " «" + val + "»");
+    };
+
+    function expect(punc) { return expect_token("punc", punc); };
+
+    function can_insert_semicolon() {
+        return !options.strict && (
+            S.token.nlb || is("eof") || is("punc", "}")
+        );
+    };
+
+    function semicolon(optional) {
+        if (is("punc", ";")) next();
+        else if (!optional && !can_insert_semicolon()) unexpected();
+    };
+
+    function parenthesised() {
+        expect("(");
+        var exp = expression(true);
+        expect(")");
+        return exp;
+    };
+
+    function embed_tokens(parser) {
+        return function() {
+            var start = S.token;
+            var expr = parser();
+            var end = prev();
+            expr.start = start;
+            expr.end = end;
+            return expr;
+        };
+    };
+
+    function handle_regexp() {
+        if (is("operator", "/") || is("operator", "/=")) {
+            S.peeked = null;
+            S.token = S.input(S.token.value.substr(1)); // force regexp
+        }
+    };
+
+    var statement = embed_tokens(function() {
+        var tmp;
+        handle_regexp();
+        switch (S.token.type) {
+          case "string":
+            var dir = false;
+            if (S.in_directives === true) {
+                if ((is_token(peek(), "punc", ";") || peek().nlb) && S.token.raw.indexOf("\\") === -1) {
+                    S.input.add_directive(S.token.value);
+                } else {
+                    S.in_directives = false;
+                }
+            }
+            var dir = S.in_directives, stat = simple_statement();
+            if (dir) {
+                return new AST_Directive({
+                    start : stat.body.start,
+                    end   : stat.body.end,
+                    quote : stat.body.quote,
+                    value : stat.body.value,
+                });
+            }
+            return stat;
+          case "num":
+          case "regexp":
+          case "operator":
+          case "atom":
+            return simple_statement();
+
+          case "name":
+            return is_token(peek(), "punc", ":")
+                ? labeled_statement()
+                : simple_statement();
+
+          case "punc":
+            switch (S.token.value) {
+              case "{":
+                return new AST_BlockStatement({
+                    start : S.token,
+                    body  : block_(),
+                    end   : prev()
+                });
+              case "[":
+              case "(":
+                return simple_statement();
+              case ";":
+                S.in_directives = false;
+                next();
+                return new AST_EmptyStatement();
+              default:
+                unexpected();
+            }
+
+          case "keyword":
+            switch (tmp = S.token.value, next(), tmp) {
+              case "break":
+                return break_cont(AST_Break);
+
+              case "continue":
+                return break_cont(AST_Continue);
+
+              case "debugger":
+                semicolon();
+                return new AST_Debugger();
+
+              case "do":
+                return new AST_Do({
+                    body      : in_loop(statement),
+                    condition : (expect_token("keyword", "while"), tmp = parenthesised(), semicolon(true), tmp)
+                });
+
+              case "while":
+                return new AST_While({
+                    condition : parenthesised(),
+                    body      : in_loop(statement)
+                });
+
+              case "for":
+                return for_();
+
+              case "function":
+                return function_(AST_Defun);
+
+              case "if":
+                return if_();
+
+              case "return":
+                if (S.in_function == 0 && !options.bare_returns)
+                    croak("'return' outside of function");
+                return new AST_Return({
+                    value: ( is("punc", ";")
+                             ? (next(), null)
+                             : can_insert_semicolon()
+                             ? null
+                             : (tmp = expression(true), semicolon(), tmp) )
+                });
+
+              case "switch":
+                return new AST_Switch({
+                    expression : parenthesised(),
+                    body       : in_loop(switch_body_)
+                });
+
+              case "throw":
+                if (S.token.nlb)
+                    croak("Illegal newline after 'throw'");
+                return new AST_Throw({
+                    value: (tmp = expression(true), semicolon(), tmp)
+                });
+
+              case "try":
+                return try_();
+
+              case "var":
+                return tmp = var_(), semicolon(), tmp;
+
+              case "const":
+                return tmp = const_(), semicolon(), tmp;
+
+              case "with":
+                if (S.input.has_directive("use strict")) {
+                    croak("Strict mode may not include a with statement");
+                }
+                return new AST_With({
+                    expression : parenthesised(),
+                    body       : statement()
+                });
+            }
+        }
+        unexpected();
+    });
+
+    function labeled_statement() {
+        var label = as_symbol(AST_Label);
+        if (find_if(function(l){ return l.name == label.name }, S.labels)) {
+            // ECMA-262, 12.12: An ECMAScript program is considered
+            // syntactically incorrect if it contains a
+            // LabelledStatement that is enclosed by a
+            // LabelledStatement with the same Identifier as label.
+            croak("Label " + label.name + " defined twice");
+        }
+        expect(":");
+        S.labels.push(label);
+        var stat = statement();
+        S.labels.pop();
+        if (!(stat instanceof AST_IterationStatement)) {
+            // check for `continue` that refers to this label.
+            // those should be reported as syntax errors.
+            // https://github.com/mishoo/UglifyJS2/issues/287
+            label.references.forEach(function(ref){
+                if (ref instanceof AST_Continue) {
+                    ref = ref.label.start;
+                    croak("Continue label `" + label.name + "` refers to non-IterationStatement.",
+                          ref.line, ref.col, ref.pos);
+                }
+            });
+        }
+        return new AST_LabeledStatement({ body: stat, label: label });
+    };
+
+    function simple_statement(tmp) {
+        return new AST_SimpleStatement({ body: (tmp = expression(true), semicolon(), tmp) });
+    };
+
+    function break_cont(type) {
+        var label = null, ldef;
+        if (!can_insert_semicolon()) {
+            label = as_symbol(AST_LabelRef, true);
+        }
+        if (label != null) {
+            ldef = find_if(function(l){ return l.name == label.name }, S.labels);
+            if (!ldef)
+                croak("Undefined label " + label.name);
+            label.thedef = ldef;
+        }
+        else if (S.in_loop == 0)
+            croak(type.TYPE + " not inside a loop or switch");
+        semicolon();
+        var stat = new type({ label: label });
+        if (ldef) ldef.references.push(stat);
+        return stat;
+    };
+
+    function for_() {
+        expect("(");
+        var init = null;
+        if (!is("punc", ";")) {
+            init = is("keyword", "var")
+                ? (next(), var_(true))
+                : expression(true, true);
+            if (is("operator", "in")) {
+                if (init instanceof AST_Var && init.definitions.length > 1)
+                    croak("Only one variable declaration allowed in for..in loop");
+                next();
+                return for_in(init);
+            }
+        }
+        return regular_for(init);
+    };
+
+    function regular_for(init) {
+        expect(";");
+        var test = is("punc", ";") ? null : expression(true);
+        expect(";");
+        var step = is("punc", ")") ? null : expression(true);
+        expect(")");
+        return new AST_For({
+            init      : init,
+            condition : test,
+            step      : step,
+            body      : in_loop(statement)
+        });
+    };
+
+    function for_in(init) {
+        var lhs = init instanceof AST_Var ? init.definitions[0].name : null;
+        var obj = expression(true);
+        expect(")");
+        return new AST_ForIn({
+            init   : init,
+            name   : lhs,
+            object : obj,
+            body   : in_loop(statement)
+        });
+    };
+
+    var function_ = function(ctor) {
+        var in_statement = ctor === AST_Defun;
+        var name = is("name") ? as_symbol(in_statement ? AST_SymbolDefun : AST_SymbolLambda) : null;
+        if (in_statement && !name)
+            unexpected();
+        expect("(");
+        return new ctor({
+            name: name,
+            argnames: (function(first, a){
+                while (!is("punc", ")")) {
+                    if (first) first = false; else expect(",");
+                    a.push(as_symbol(AST_SymbolFunarg));
+                }
+                next();
+                return a;
+            })(true, []),
+            body: (function(loop, labels){
+                ++S.in_function;
+                S.in_directives = true;
+                S.input.push_directives_stack();
+                S.in_loop = 0;
+                S.labels = [];
+                var a = block_();
+                S.input.pop_directives_stack();
+                --S.in_function;
+                S.in_loop = loop;
+                S.labels = labels;
+                return a;
+            })(S.in_loop, S.labels)
+        });
+    };
+
+    function if_() {
+        var cond = parenthesised(), body = statement(), belse = null;
+        if (is("keyword", "else")) {
+            next();
+            belse = statement();
+        }
+        return new AST_If({
+            condition   : cond,
+            body        : body,
+            alternative : belse
+        });
+    };
+
+    function block_() {
+        expect("{");
+        var a = [];
+        while (!is("punc", "}")) {
+            if (is("eof")) unexpected();
+            a.push(statement());
+        }
+        next();
+        return a;
+    };
+
+    function switch_body_() {
+        expect("{");
+        var a = [], cur = null, branch = null, tmp;
+        while (!is("punc", "}")) {
+            if (is("eof")) unexpected();
+            if (is("keyword", "case")) {
+                if (branch) branch.end = prev();
+                cur = [];
+                branch = new AST_Case({
+                    start      : (tmp = S.token, next(), tmp),
+                    expression : expression(true),
+                    body       : cur
+                });
+                a.push(branch);
+                expect(":");
+            }
+            else if (is("keyword", "default")) {
+                if (branch) branch.end = prev();
+                cur = [];
+                branch = new AST_Default({
+                    start : (tmp = S.token, next(), expect(":"), tmp),
+                    body  : cur
+                });
+                a.push(branch);
+            }
+            else {
+                if (!cur) unexpected();
+                cur.push(statement());
+            }
+        }
+        if (branch) branch.end = prev();
+        next();
+        return a;
+    };
+
+    function try_() {
+        var body = block_(), bcatch = null, bfinally = null;
+        if (is("keyword", "catch")) {
+            var start = S.token;
+            next();
+            expect("(");
+            var name = as_symbol(AST_SymbolCatch);
+            expect(")");
+            bcatch = new AST_Catch({
+                start   : start,
+                argname : name,
+                body    : block_(),
+                end     : prev()
+            });
+        }
+        if (is("keyword", "finally")) {
+            var start = S.token;
+            next();
+            bfinally = new AST_Finally({
+                start : start,
+                body  : block_(),
+                end   : prev()
+            });
+        }
+        if (!bcatch && !bfinally)
+            croak("Missing catch/finally blocks");
+        return new AST_Try({
+            body     : body,
+            bcatch   : bcatch,
+            bfinally : bfinally
+        });
+    };
+
+    function vardefs(no_in, in_const) {
+        var a = [];
+        for (;;) {
+            a.push(new AST_VarDef({
+                start : S.token,
+                name  : as_symbol(in_const ? AST_SymbolConst : AST_SymbolVar),
+                value : is("operator", "=") ? (next(), expression(false, no_in)) : null,
+                end   : prev()
+            }));
+            if (!is("punc", ","))
+                break;
+            next();
+        }
+        return a;
+    };
+
+    var var_ = function(no_in) {
+        return new AST_Var({
+            start       : prev(),
+            definitions : vardefs(no_in, false),
+            end         : prev()
+        });
+    };
+
+    var const_ = function() {
+        return new AST_Const({
+            start       : prev(),
+            definitions : vardefs(false, true),
+            end         : prev()
+        });
+    };
+
+    var new_ = function(allow_calls) {
+        var start = S.token;
+        expect_token("operator", "new");
+        var newexp = expr_atom(false), args;
+        if (is("punc", "(")) {
+            next();
+            args = expr_list(")");
+        } else {
+            args = [];
+        }
+        return subscripts(new AST_New({
+            start      : start,
+            expression : newexp,
+            args       : args,
+            end        : prev()
+        }), allow_calls);
+    };
+
+    function as_atom_node() {
+        var tok = S.token, ret;
+        switch (tok.type) {
+          case "name":
+          case "keyword":
+            ret = _make_symbol(AST_SymbolRef);
+            break;
+          case "num":
+            ret = new AST_Number({ start: tok, end: tok, value: tok.value });
+            break;
+          case "string":
+            ret = new AST_String({
+                start : tok,
+                end   : tok,
+                value : tok.value,
+                quote : tok.quote
+            });
+            break;
+          case "regexp":
+            ret = new AST_RegExp({ start: tok, end: tok, value: tok.value });
+            break;
+          case "atom":
+            switch (tok.value) {
+              case "false":
+                ret = new AST_False({ start: tok, end: tok });
+                break;
+              case "true":
+                ret = new AST_True({ start: tok, end: tok });
+                break;
+              case "null":
+                ret = new AST_Null({ start: tok, end: tok });
+                break;
+            }
+            break;
+          case "operator":
+            if (!is_identifier_string(tok.value)) {
+                croak("Invalid getter/setter name: " + tok.value,
+                    tok.line, tok.col, tok.pos);
+            }
+            ret = _make_symbol(AST_SymbolRef);
+            break;
+        }
+        next();
+        return ret;
+    };
+
+    var expr_atom = function(allow_calls) {
+        if (is("operator", "new")) {
+            return new_(allow_calls);
+        }
+        var start = S.token;
+        if (is("punc")) {
+            switch (start.value) {
+              case "(":
+                next();
+                var ex = expression(true);
+                ex.start = start;
+                ex.end = S.token;
+                expect(")");
+                return subscripts(ex, allow_calls);
+              case "[":
+                return subscripts(array_(), allow_calls);
+              case "{":
+                return subscripts(object_(), allow_calls);
+            }
+            unexpected();
+        }
+        if (is("keyword", "function")) {
+            next();
+            var func = function_(AST_Function);
+            func.start = start;
+            func.end = prev();
+            return subscripts(func, allow_calls);
+        }
+        if (ATOMIC_START_TOKEN[S.token.type]) {
+            return subscripts(as_atom_node(), allow_calls);
+        }
+        unexpected();
+    };
+
+    function expr_list(closing, allow_trailing_comma, allow_empty) {
+        var first = true, a = [];
+        while (!is("punc", closing)) {
+            if (first) first = false; else expect(",");
+            if (allow_trailing_comma && is("punc", closing)) break;
+            if (is("punc", ",") && allow_empty) {
+                a.push(new AST_Hole({ start: S.token, end: S.token }));
+            } else {
+                a.push(expression(false));
+            }
+        }
+        next();
+        return a;
+    };
+
+    var array_ = embed_tokens(function() {
+        expect("[");
+        return new AST_Array({
+            elements: expr_list("]", !options.strict, true)
+        });
+    });
+
+    var create_accessor = embed_tokens(function() {
+        return function_(AST_Accessor);
+    });
+
+    var object_ = embed_tokens(function() {
+        expect("{");
+        var first = true, a = [];
+        while (!is("punc", "}")) {
+            if (first) first = false; else expect(",");
+            if (!options.strict && is("punc", "}"))
+                // allow trailing comma
+                break;
+            var start = S.token;
+            var type = start.type;
+            var name = as_property_name();
+            if (type == "name" && !is("punc", ":")) {
+                if (name == "get") {
+                    a.push(new AST_ObjectGetter({
+                        start : start,
+                        key   : as_atom_node(),
+                        value : create_accessor(),
+                        end   : prev()
+                    }));
+                    continue;
+                }
+                if (name == "set") {
+                    a.push(new AST_ObjectSetter({
+                        start : start,
+                        key   : as_atom_node(),
+                        value : create_accessor(),
+                        end   : prev()
+                    }));
+                    continue;
+                }
+            }
+            expect(":");
+            a.push(new AST_ObjectKeyVal({
+                start : start,
+                quote : start.quote,
+                key   : name,
+                value : expression(false),
+                end   : prev()
+            }));
+        }
+        next();
+        return new AST_Object({ properties: a });
+    });
+
+    function as_property_name() {
+        var tmp = S.token;
+        next();
+        switch (tmp.type) {
+          case "num":
+          case "string":
+          case "name":
+          case "operator":
+          case "keyword":
+          case "atom":
+            return tmp.value;
+          default:
+            unexpected();
+        }
+    };
+
+    function as_name() {
+        var tmp = S.token;
+        next();
+        switch (tmp.type) {
+          case "name":
+          case "operator":
+          case "keyword":
+          case "atom":
+            return tmp.value;
+          default:
+            unexpected();
+        }
+    };
+
+    function _make_symbol(type) {
+        var name = S.token.value;
+        return new (name == "this" ? AST_This : type)({
+            name  : String(name),
+            start : S.token,
+            end   : S.token
+        });
+    };
+
+    function as_symbol(type, noerror) {
+        if (!is("name")) {
+            if (!noerror) croak("Name expected");
+            return null;
+        }
+        var sym = _make_symbol(type);
+        next();
+        return sym;
+    };
+
+    var subscripts = function(expr, allow_calls) {
+        var start = expr.start;
+        if (is("punc", ".")) {
+            next();
+            return subscripts(new AST_Dot({
+                start      : start,
+                expression : expr,
+                property   : as_name(),
+                end        : prev()
+            }), allow_calls);
+        }
+        if (is("punc", "[")) {
+            next();
+            var prop = expression(true);
+            expect("]");
+            return subscripts(new AST_Sub({
+                start      : start,
+                expression : expr,
+                property   : prop,
+                end        : prev()
+            }), allow_calls);
+        }
+        if (allow_calls && is("punc", "(")) {
+            next();
+            return subscripts(new AST_Call({
+                start      : start,
+                expression : expr,
+                args       : expr_list(")"),
+                end        : prev()
+            }), true);
+        }
+        return expr;
+    };
+
+    var maybe_unary = function(allow_calls) {
+        var start = S.token;
+        if (is("operator") && UNARY_PREFIX(start.value)) {
+            next();
+            handle_regexp();
+            var ex = make_unary(AST_UnaryPrefix, start.value, maybe_unary(allow_calls));
+            ex.start = start;
+            ex.end = prev();
+            return ex;
+        }
+        var val = expr_atom(allow_calls);
+        while (is("operator") && UNARY_POSTFIX(S.token.value) && !S.token.nlb) {
+            val = make_unary(AST_UnaryPostfix, S.token.value, val);
+            val.start = start;
+            val.end = S.token;
+            next();
+        }
+        return val;
+    };
+
+    function make_unary(ctor, op, expr) {
+        if ((op == "++" || op == "--") && !is_assignable(expr))
+            croak("Invalid use of " + op + " operator", null, ctor === AST_UnaryPrefix ? expr.start.col - 1 : null);
+        return new ctor({ operator: op, expression: expr });
+    };
+
+    var expr_op = function(left, min_prec, no_in) {
+        var op = is("operator") ? S.token.value : null;
+        if (op == "in" && no_in) op = null;
+        var prec = op != null ? PRECEDENCE[op] : null;
+        if (prec != null && prec > min_prec) {
+            next();
+            var right = expr_op(maybe_unary(true), prec, no_in);
+            return expr_op(new AST_Binary({
+                start    : left.start,
+                left     : left,
+                operator : op,
+                right    : right,
+                end      : right.end
+            }), min_prec, no_in);
+        }
+        return left;
+    };
+
+    function expr_ops(no_in) {
+        return expr_op(maybe_unary(true), 0, no_in);
+    };
+
+    var maybe_conditional = function(no_in) {
+        var start = S.token;
+        var expr = expr_ops(no_in);
+        if (is("operator", "?")) {
+            next();
+            var yes = expression(false);
+            expect(":");
+            return new AST_Conditional({
+                start       : start,
+                condition   : expr,
+                consequent  : yes,
+                alternative : expression(false, no_in),
+                end         : prev()
+            });
+        }
+        return expr;
+    };
+
+    function is_assignable(expr) {
+        if (options.cli) return true;
+        return expr instanceof AST_PropAccess || expr instanceof AST_SymbolRef;
+    };
+
+    var maybe_assign = function(no_in) {
+        var start = S.token;
+        var left = maybe_conditional(no_in), val = S.token.value;
+        if (is("operator") && ASSIGNMENT(val)) {
+            if (is_assignable(left)) {
+                next();
+                return new AST_Assign({
+                    start    : start,
+                    left     : left,
+                    operator : val,
+                    right    : maybe_assign(no_in),
+                    end      : prev()
+                });
+            }
+            croak("Invalid assignment");
+        }
+        return left;
+    };
+
+    var expression = function(commas, no_in) {
+        var start = S.token;
+        var expr = maybe_assign(no_in);
+        if (commas && is("punc", ",")) {
+            next();
+            return new AST_Seq({
+                start  : start,
+                car    : expr,
+                cdr    : expression(true, no_in),
+                end    : peek()
+            });
+        }
+        return expr;
+    };
+
+    function in_loop(cont) {
+        ++S.in_loop;
+        var ret = cont();
+        --S.in_loop;
+        return ret;
+    };
+
+    if (options.expression) {
+        return expression(true);
+    }
+
+    return (function(){
+        var start = S.token;
+        var body = [];
+        S.input.push_directives_stack();
+        while (!is("eof"))
+            body.push(statement());
+        S.input.pop_directives_stack();
+        var end = prev();
+        var toplevel = options.toplevel;
+        if (toplevel) {
+            toplevel.body = toplevel.body.concat(body);
+            toplevel.end = end;
+        } else {
+            toplevel = new AST_Toplevel({ start: start, body: body, end: end });
+        }
+        return toplevel;
+    })();
+
+};
diff --git a/node_modules/uglify-js/lib/propmangle.js b/node_modules/uglify-js/lib/propmangle.js
new file mode 100644
index 000000000..b62229903
--- /dev/null
+++ b/node_modules/uglify-js/lib/propmangle.js
@@ -0,0 +1,264 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+function find_builtins() {
+    // NaN will be included due to Number.NaN
+    var a = [
+        "null",
+        "true",
+        "false",
+        "Infinity",
+        "-Infinity",
+        "undefined",
+    ];
+    [ Object, Array, Function, Number,
+      String, Boolean, Error, Math,
+      Date, RegExp
+    ].forEach(function(ctor){
+        Object.getOwnPropertyNames(ctor).map(add);
+        if (ctor.prototype) {
+            Object.getOwnPropertyNames(ctor.prototype).map(add);
+        }
+    });
+    function add(name) {
+        push_uniq(a, name);
+    }
+    return a;
+}
+
+function mangle_properties(ast, options) {
+    options = defaults(options, {
+        cache: null,
+        debug: false,
+        ignore_quoted: false,
+        only_cache: false,
+        regex: null,
+        reserved: null,
+    });
+
+    var reserved = options.reserved;
+    if (reserved == null)
+        reserved = find_builtins();
+
+    var cache = options.cache;
+    if (cache == null) {
+        cache = {
+            cname: -1,
+            props: new Dictionary()
+        };
+    }
+
+    var regex = options.regex;
+    var ignore_quoted = options.ignore_quoted;
+
+    // note debug is either false (disabled), or a string of the debug suffix to use (enabled).
+    // note debug may be enabled as an empty string, which is falsey. Also treat passing 'true'
+    // the same as passing an empty string.
+    var debug = (options.debug !== false);
+    var debug_name_suffix;
+    if (debug) {
+        debug_name_suffix = (options.debug === true ? "" : options.debug);
+    }
+
+    var names_to_mangle = [];
+    var unmangleable = [];
+    var ignored = {};
+
+    // step 1: find candidates to mangle
+    ast.walk(new TreeWalker(function(node){
+        if (node instanceof AST_ObjectKeyVal) {
+            add(node.key, ignore_quoted && node.quote);
+        }
+        else if (node instanceof AST_ObjectProperty) {
+            // setter or getter, since KeyVal is handled above
+            add(node.key.name);
+        }
+        else if (node instanceof AST_Dot) {
+            add(node.property);
+        }
+        else if (node instanceof AST_Sub) {
+            addStrings(node.property, ignore_quoted);
+        }
+    }));
+
+    // step 2: transform the tree, renaming properties
+    return ast.transform(new TreeTransformer(function(node){
+        if (node instanceof AST_ObjectKeyVal) {
+            if (!(ignore_quoted && node.quote))
+                node.key = mangle(node.key);
+        }
+        else if (node instanceof AST_ObjectProperty) {
+            // setter or getter
+            node.key.name = mangle(node.key.name);
+        }
+        else if (node instanceof AST_Dot) {
+            node.property = mangle(node.property);
+        }
+        else if (node instanceof AST_Sub) {
+            if (!ignore_quoted)
+                node.property = mangleStrings(node.property);
+        }
+        // else if (node instanceof AST_String) {
+        //     if (should_mangle(node.value)) {
+        //         AST_Node.warn(
+        //             "Found \"{prop}\" property candidate for mangling in an arbitrary string [{file}:{line},{col}]", {
+        //                 file : node.start.file,
+        //                 line : node.start.line,
+        //                 col  : node.start.col,
+        //                 prop : node.value
+        //             }
+        //         );
+        //     }
+        // }
+    }));
+
+    // only function declarations after this line
+
+    function can_mangle(name) {
+        if (unmangleable.indexOf(name) >= 0) return false;
+        if (reserved.indexOf(name) >= 0) return false;
+        if (options.only_cache) {
+            return cache.props.has(name);
+        }
+        if (/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name)) return false;
+        return true;
+    }
+
+    function should_mangle(name) {
+        if (ignore_quoted && name in ignored) return false;
+        if (regex && !regex.test(name)) return false;
+        if (reserved.indexOf(name) >= 0) return false;
+        return cache.props.has(name)
+            || names_to_mangle.indexOf(name) >= 0;
+    }
+
+    function add(name, ignore) {
+        if (ignore) {
+            ignored[name] = true;
+            return;
+        }
+
+        if (can_mangle(name))
+            push_uniq(names_to_mangle, name);
+
+        if (!should_mangle(name)) {
+            push_uniq(unmangleable, name);
+        }
+    }
+
+    function mangle(name) {
+        if (!should_mangle(name)) {
+            return name;
+        }
+
+        var mangled = cache.props.get(name);
+        if (!mangled) {
+            if (debug) {
+                // debug mode: use a prefix and suffix to preserve readability, e.g. o.foo -> o._$foo$NNN_.
+                var debug_mangled = "_$" + name + "$" + debug_name_suffix + "_";
+
+                if (can_mangle(debug_mangled) && !(ignore_quoted && debug_mangled in ignored)) {
+                    mangled = debug_mangled;
+                }
+            }
+
+            // either debug mode is off, or it is on and we could not use the mangled name
+            if (!mangled) {
+                // note can_mangle() does not check if the name collides with the 'ignored' set
+                // (filled with quoted properties when ignore_quoted set). Make sure we add this
+                // check so we don't collide with a quoted name.
+                do {
+                    mangled = base54(++cache.cname);
+                } while (!can_mangle(mangled) || (ignore_quoted && mangled in ignored));
+            }
+
+            cache.props.set(name, mangled);
+        }
+        return mangled;
+    }
+
+    function addStrings(node, ignore) {
+        var out = {};
+        try {
+            (function walk(node){
+                node.walk(new TreeWalker(function(node){
+                    if (node instanceof AST_Seq) {
+                        walk(node.cdr);
+                        return true;
+                    }
+                    if (node instanceof AST_String) {
+                        add(node.value, ignore);
+                        return true;
+                    }
+                    if (node instanceof AST_Conditional) {
+                        walk(node.consequent);
+                        walk(node.alternative);
+                        return true;
+                    }
+                    throw out;
+                }));
+            })(node);
+        } catch(ex) {
+            if (ex !== out) throw ex;
+        }
+    }
+
+    function mangleStrings(node) {
+        return node.transform(new TreeTransformer(function(node){
+            if (node instanceof AST_Seq) {
+                node.cdr = mangleStrings(node.cdr);
+            }
+            else if (node instanceof AST_String) {
+                node.value = mangle(node.value);
+            }
+            else if (node instanceof AST_Conditional) {
+                node.consequent = mangleStrings(node.consequent);
+                node.alternative = mangleStrings(node.alternative);
+            }
+            return node;
+        }));
+    }
+
+}
diff --git a/node_modules/uglify-js/lib/scope.js b/node_modules/uglify-js/lib/scope.js
new file mode 100644
index 000000000..74760e4f4
--- /dev/null
+++ b/node_modules/uglify-js/lib/scope.js
@@ -0,0 +1,661 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+function SymbolDef(scope, index, orig) {
+    this.name = orig.name;
+    this.orig = [ orig ];
+    this.scope = scope;
+    this.references = [];
+    this.global = false;
+    this.mangled_name = null;
+    this.undeclared = false;
+    this.index = index;
+    this.id = SymbolDef.next_id++;
+};
+
+SymbolDef.next_id = 1;
+
+SymbolDef.prototype = {
+    unmangleable: function(options) {
+        if (!options) options = {};
+
+        return (this.global && !options.toplevel)
+            || this.undeclared
+            || (!options.eval && (this.scope.uses_eval || this.scope.uses_with))
+            || (options.keep_fnames
+                && (this.orig[0] instanceof AST_SymbolLambda
+                    || this.orig[0] instanceof AST_SymbolDefun));
+    },
+    mangle: function(options) {
+        var cache = options.cache && options.cache.props;
+        if (this.global && cache && cache.has(this.name)) {
+            this.mangled_name = cache.get(this.name);
+        }
+        else if (!this.mangled_name && !this.unmangleable(options)) {
+            var s = this.scope;
+            var sym = this.orig[0];
+            if (!options.screw_ie8 && sym instanceof AST_SymbolLambda)
+                s = s.parent_scope;
+            var def;
+            if (this.defun && (def = this.defun.variables.get(this.name))) {
+                this.mangled_name = def.mangled_name || def.name;
+            } else
+                this.mangled_name = s.next_mangled(options, this);
+            if (this.global && cache) {
+                cache.set(this.name, this.mangled_name);
+            }
+        }
+    }
+};
+
+AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
+    options = defaults(options, {
+        cache: null,
+        screw_ie8: true,
+    });
+
+    // pass 1: setup scope chaining and handle definitions
+    var self = this;
+    var scope = self.parent_scope = null;
+    var labels = new Dictionary();
+    var defun = null;
+    var tw = new TreeWalker(function(node, descend){
+        if (node instanceof AST_Catch) {
+            var save_scope = scope;
+            scope = new AST_Scope(node);
+            scope.init_scope_vars(save_scope);
+            descend();
+            scope = save_scope;
+            return true;
+        }
+        if (node instanceof AST_Scope) {
+            node.init_scope_vars(scope);
+            var save_scope = scope;
+            var save_defun = defun;
+            var save_labels = labels;
+            defun = scope = node;
+            labels = new Dictionary();
+            descend();
+            scope = save_scope;
+            defun = save_defun;
+            labels = save_labels;
+            return true;        // don't descend again in TreeWalker
+        }
+        if (node instanceof AST_LabeledStatement) {
+            var l = node.label;
+            if (labels.has(l.name)) {
+                throw new Error(string_template("Label {name} defined twice", l));
+            }
+            labels.set(l.name, l);
+            descend();
+            labels.del(l.name);
+            return true;        // no descend again
+        }
+        if (node instanceof AST_With) {
+            for (var s = scope; s; s = s.parent_scope)
+                s.uses_with = true;
+            return;
+        }
+        if (node instanceof AST_Symbol) {
+            node.scope = scope;
+        }
+        if (node instanceof AST_Label) {
+            node.thedef = node;
+            node.references = [];
+        }
+        if (node instanceof AST_SymbolLambda) {
+            defun.def_function(node);
+        }
+        else if (node instanceof AST_SymbolDefun) {
+            // Careful here, the scope where this should be defined is
+            // the parent scope.  The reason is that we enter a new
+            // scope when we encounter the AST_Defun node (which is
+            // instanceof AST_Scope) but we get to the symbol a bit
+            // later.
+            (node.scope = defun.parent_scope).def_function(node);
+        }
+        else if (node instanceof AST_SymbolVar
+            || node instanceof AST_SymbolConst) {
+            defun.def_variable(node);
+            if (defun !== scope) {
+                node.mark_enclosed(options);
+                var def = scope.find_variable(node);
+                if (node.thedef !== def) {
+                    node.thedef = def;
+                    node.reference(options);
+                }
+            }
+        }
+        else if (node instanceof AST_SymbolCatch) {
+            scope.def_variable(node).defun = defun;
+        }
+        else if (node instanceof AST_LabelRef) {
+            var sym = labels.get(node.name);
+            if (!sym) throw new Error(string_template("Undefined label {name} [{line},{col}]", {
+                name: node.name,
+                line: node.start.line,
+                col: node.start.col
+            }));
+            node.thedef = sym;
+        }
+    });
+    self.walk(tw);
+
+    // pass 2: find back references and eval
+    var func = null;
+    var globals = self.globals = new Dictionary();
+    var tw = new TreeWalker(function(node, descend){
+        if (node instanceof AST_Lambda) {
+            var prev_func = func;
+            func = node;
+            descend();
+            func = prev_func;
+            return true;
+        }
+        if (node instanceof AST_LoopControl && node.label) {
+            node.label.thedef.references.push(node);
+            return true;
+        }
+        if (node instanceof AST_SymbolRef) {
+            var name = node.name;
+            if (name == "eval" && tw.parent() instanceof AST_Call) {
+                for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope) {
+                    s.uses_eval = true;
+                }
+            }
+            var sym = node.scope.find_variable(name);
+            if (node.scope instanceof AST_Lambda && name == "arguments") {
+                node.scope.uses_arguments = true;
+            }
+            if (!sym) {
+                sym = self.def_global(node);
+            }
+            node.thedef = sym;
+            node.reference(options);
+            return true;
+        }
+    });
+    self.walk(tw);
+
+    // pass 3: fix up any scoping issue with IE8
+    if (!options.screw_ie8) {
+        self.walk(new TreeWalker(function(node, descend) {
+            if (node instanceof AST_SymbolCatch) {
+                var name = node.name;
+                var refs = node.thedef.references;
+                var scope = node.thedef.defun;
+                var def = scope.find_variable(name) || self.globals.get(name) || scope.def_variable(node);
+                refs.forEach(function(ref) {
+                    ref.thedef = def;
+                    ref.reference(options);
+                });
+                node.thedef = def;
+                return true;
+            }
+        }));
+    }
+
+    if (options.cache) {
+        this.cname = options.cache.cname;
+    }
+});
+
+AST_Toplevel.DEFMETHOD("def_global", function(node){
+    var globals = this.globals, name = node.name;
+    if (globals.has(name)) {
+        return globals.get(name);
+    } else {
+        var g = new SymbolDef(this, globals.size(), node);
+        g.undeclared = true;
+        g.global = true;
+        globals.set(name, g);
+        return g;
+    }
+});
+
+AST_Scope.DEFMETHOD("init_scope_vars", function(parent_scope){
+    this.variables = new Dictionary();  // map name to AST_SymbolVar (variables defined in this scope; includes functions)
+    this.functions = new Dictionary();  // map name to AST_SymbolDefun (functions defined in this scope)
+    this.uses_with = false;             // will be set to true if this or some nested scope uses the `with` statement
+    this.uses_eval = false;             // will be set to true if this or nested scope uses the global `eval`
+    this.parent_scope = parent_scope;   // the parent scope
+    this.enclosed = [];                 // a list of variables from this or outer scope(s) that are referenced from this or inner scopes
+    this.cname = -1;                    // the current index for mangling functions/variables
+});
+
+AST_Lambda.DEFMETHOD("init_scope_vars", function(){
+    AST_Scope.prototype.init_scope_vars.apply(this, arguments);
+    this.uses_arguments = false;
+    this.def_variable(new AST_SymbolVar({
+        name: "arguments",
+        start: this.start,
+        end: this.end
+    }));
+});
+
+AST_Symbol.DEFMETHOD("mark_enclosed", function(options) {
+    var def = this.definition();
+    var s = this.scope;
+    while (s) {
+        push_uniq(s.enclosed, def);
+        if (options.keep_fnames) {
+            s.functions.each(function(d) {
+                push_uniq(def.scope.enclosed, d);
+            });
+        }
+        if (s === def.scope) break;
+        s = s.parent_scope;
+    }
+});
+
+AST_Symbol.DEFMETHOD("reference", function(options) {
+    this.definition().references.push(this);
+    this.mark_enclosed(options);
+});
+
+AST_Scope.DEFMETHOD("find_variable", function(name){
+    if (name instanceof AST_Symbol) name = name.name;
+    return this.variables.get(name)
+        || (this.parent_scope && this.parent_scope.find_variable(name));
+});
+
+AST_Scope.DEFMETHOD("def_function", function(symbol){
+    this.functions.set(symbol.name, this.def_variable(symbol));
+});
+
+AST_Scope.DEFMETHOD("def_variable", function(symbol){
+    var def;
+    if (!this.variables.has(symbol.name)) {
+        def = new SymbolDef(this, this.variables.size(), symbol);
+        this.variables.set(symbol.name, def);
+        def.global = !this.parent_scope;
+    } else {
+        def = this.variables.get(symbol.name);
+        def.orig.push(symbol);
+    }
+    return symbol.thedef = def;
+});
+
+AST_Scope.DEFMETHOD("next_mangled", function(options){
+    var ext = this.enclosed;
+    out: while (true) {
+        var m = base54(++this.cname);
+        if (!is_identifier(m)) continue; // skip over "do"
+
+        // https://github.com/mishoo/UglifyJS2/issues/242 -- do not
+        // shadow a name excepted from mangling.
+        if (options.except.indexOf(m) >= 0) continue;
+
+        // we must ensure that the mangled name does not shadow a name
+        // from some parent scope that is referenced in this or in
+        // inner scopes.
+        for (var i = ext.length; --i >= 0;) {
+            var sym = ext[i];
+            var name = sym.mangled_name || (sym.unmangleable(options) && sym.name);
+            if (m == name) continue out;
+        }
+        return m;
+    }
+});
+
+AST_Function.DEFMETHOD("next_mangled", function(options, def){
+    // #179, #326
+    // in Safari strict mode, something like (function x(x){...}) is a syntax error;
+    // a function expression's argument cannot shadow the function expression's name
+
+    var tricky_def = def.orig[0] instanceof AST_SymbolFunarg && this.name && this.name.definition();
+
+    // the function's mangled_name is null when keep_fnames is true
+    var tricky_name = tricky_def ? tricky_def.mangled_name || tricky_def.name : null;
+
+    while (true) {
+        var name = AST_Lambda.prototype.next_mangled.call(this, options, def);
+        if (!tricky_name || tricky_name != name)
+            return name;
+    }
+});
+
+AST_Symbol.DEFMETHOD("unmangleable", function(options){
+    return this.definition().unmangleable(options);
+});
+
+// property accessors are not mangleable
+AST_SymbolAccessor.DEFMETHOD("unmangleable", function(){
+    return true;
+});
+
+// labels are always mangleable
+AST_Label.DEFMETHOD("unmangleable", function(){
+    return false;
+});
+
+AST_Symbol.DEFMETHOD("unreferenced", function(){
+    return this.definition().references.length == 0
+        && !(this.scope.uses_eval || this.scope.uses_with);
+});
+
+AST_Symbol.DEFMETHOD("undeclared", function(){
+    return this.definition().undeclared;
+});
+
+AST_LabelRef.DEFMETHOD("undeclared", function(){
+    return false;
+});
+
+AST_Label.DEFMETHOD("undeclared", function(){
+    return false;
+});
+
+AST_Symbol.DEFMETHOD("definition", function(){
+    return this.thedef;
+});
+
+AST_Symbol.DEFMETHOD("global", function(){
+    return this.definition().global;
+});
+
+AST_Toplevel.DEFMETHOD("_default_mangler_options", function(options){
+    return defaults(options, {
+        eval        : false,
+        except      : [],
+        keep_fnames : false,
+        screw_ie8   : true,
+        sort        : false, // Ignored. Flag retained for backwards compatibility.
+        toplevel    : false,
+    });
+});
+
+AST_Toplevel.DEFMETHOD("mangle_names", function(options){
+    options = this._default_mangler_options(options);
+
+    // Never mangle arguments
+    options.except.push('arguments');
+
+    // We only need to mangle declaration nodes.  Special logic wired
+    // into the code generator will display the mangled name if it's
+    // present (and for AST_SymbolRef-s it'll use the mangled name of
+    // the AST_SymbolDeclaration that it points to).
+    var lname = -1;
+    var to_mangle = [];
+
+    if (options.cache) {
+        this.globals.each(function(symbol){
+            if (options.except.indexOf(symbol.name) < 0) {
+                to_mangle.push(symbol);
+            }
+        });
+    }
+
+    var tw = new TreeWalker(function(node, descend){
+        if (node instanceof AST_LabeledStatement) {
+            // lname is incremented when we get to the AST_Label
+            var save_nesting = lname;
+            descend();
+            lname = save_nesting;
+            return true;        // don't descend again in TreeWalker
+        }
+        if (node instanceof AST_Scope) {
+            var p = tw.parent(), a = [];
+            node.variables.each(function(symbol){
+                if (options.except.indexOf(symbol.name) < 0) {
+                    a.push(symbol);
+                }
+            });
+            to_mangle.push.apply(to_mangle, a);
+            return;
+        }
+        if (node instanceof AST_Label) {
+            var name;
+            do name = base54(++lname); while (!is_identifier(name));
+            node.mangled_name = name;
+            return true;
+        }
+        if (options.screw_ie8 && node instanceof AST_SymbolCatch) {
+            to_mangle.push(node.definition());
+            return;
+        }
+    });
+    this.walk(tw);
+    to_mangle.forEach(function(def){ def.mangle(options) });
+
+    if (options.cache) {
+        options.cache.cname = this.cname;
+    }
+});
+
+AST_Toplevel.DEFMETHOD("compute_char_frequency", function(options){
+    options = this._default_mangler_options(options);
+    var tw = new TreeWalker(function(node){
+        if (node instanceof AST_Constant)
+            base54.consider(node.print_to_string());
+        else if (node instanceof AST_Return)
+            base54.consider("return");
+        else if (node instanceof AST_Throw)
+            base54.consider("throw");
+        else if (node instanceof AST_Continue)
+            base54.consider("continue");
+        else if (node instanceof AST_Break)
+            base54.consider("break");
+        else if (node instanceof AST_Debugger)
+            base54.consider("debugger");
+        else if (node instanceof AST_Directive)
+            base54.consider(node.value);
+        else if (node instanceof AST_While)
+            base54.consider("while");
+        else if (node instanceof AST_Do)
+            base54.consider("do while");
+        else if (node instanceof AST_If) {
+            base54.consider("if");
+            if (node.alternative) base54.consider("else");
+        }
+        else if (node instanceof AST_Var)
+            base54.consider("var");
+        else if (node instanceof AST_Const)
+            base54.consider("const");
+        else if (node instanceof AST_Lambda)
+            base54.consider("function");
+        else if (node instanceof AST_For)
+            base54.consider("for");
+        else if (node instanceof AST_ForIn)
+            base54.consider("for in");
+        else if (node instanceof AST_Switch)
+            base54.consider("switch");
+        else if (node instanceof AST_Case)
+            base54.consider("case");
+        else if (node instanceof AST_Default)
+            base54.consider("default");
+        else if (node instanceof AST_With)
+            base54.consider("with");
+        else if (node instanceof AST_ObjectSetter)
+            base54.consider("set" + node.key);
+        else if (node instanceof AST_ObjectGetter)
+            base54.consider("get" + node.key);
+        else if (node instanceof AST_ObjectKeyVal)
+            base54.consider(node.key);
+        else if (node instanceof AST_New)
+            base54.consider("new");
+        else if (node instanceof AST_This)
+            base54.consider("this");
+        else if (node instanceof AST_Try)
+            base54.consider("try");
+        else if (node instanceof AST_Catch)
+            base54.consider("catch");
+        else if (node instanceof AST_Finally)
+            base54.consider("finally");
+        else if (node instanceof AST_Symbol && node.unmangleable(options))
+            base54.consider(node.name);
+        else if (node instanceof AST_Unary || node instanceof AST_Binary)
+            base54.consider(node.operator);
+        else if (node instanceof AST_Dot)
+            base54.consider(node.property);
+    });
+    this.walk(tw);
+    base54.sort();
+});
+
+var base54 = (function() {
+    var string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_0123456789";
+    var chars, frequency;
+    function reset() {
+        frequency = Object.create(null);
+        chars = string.split("").map(function(ch){ return ch.charCodeAt(0) });
+        chars.forEach(function(ch){ frequency[ch] = 0 });
+    }
+    base54.consider = function(str){
+        for (var i = str.length; --i >= 0;) {
+            var code = str.charCodeAt(i);
+            if (code in frequency) ++frequency[code];
+        }
+    };
+    base54.sort = function() {
+        chars = mergeSort(chars, function(a, b){
+            if (is_digit(a) && !is_digit(b)) return 1;
+            if (is_digit(b) && !is_digit(a)) return -1;
+            return frequency[b] - frequency[a];
+        });
+    };
+    base54.reset = reset;
+    reset();
+    base54.get = function(){ return chars };
+    base54.freq = function(){ return frequency };
+    function base54(num) {
+        var ret = "", base = 54;
+        num++;
+        do {
+            num--;
+            ret += String.fromCharCode(chars[num % base]);
+            num = Math.floor(num / base);
+            base = 64;
+        } while (num > 0);
+        return ret;
+    };
+    return base54;
+})();
+
+AST_Toplevel.DEFMETHOD("scope_warnings", function(options){
+    options = defaults(options, {
+        assign_to_global : true,
+        eval             : true,
+        func_arguments   : true,
+        nested_defuns    : true,
+        undeclared       : false, // this makes a lot of noise
+        unreferenced     : true,
+    });
+    var tw = new TreeWalker(function(node){
+        if (options.undeclared
+            && node instanceof AST_SymbolRef
+            && node.undeclared())
+        {
+            // XXX: this also warns about JS standard names,
+            // i.e. Object, Array, parseInt etc.  Should add a list of
+            // exceptions.
+            AST_Node.warn("Undeclared symbol: {name} [{file}:{line},{col}]", {
+                name: node.name,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.assign_to_global)
+        {
+            var sym = null;
+            if (node instanceof AST_Assign && node.left instanceof AST_SymbolRef)
+                sym = node.left;
+            else if (node instanceof AST_ForIn && node.init instanceof AST_SymbolRef)
+                sym = node.init;
+            if (sym
+                && (sym.undeclared()
+                    || (sym.global() && sym.scope !== sym.definition().scope))) {
+                AST_Node.warn("{msg}: {name} [{file}:{line},{col}]", {
+                    msg: sym.undeclared() ? "Accidental global?" : "Assignment to global",
+                    name: sym.name,
+                    file: sym.start.file,
+                    line: sym.start.line,
+                    col: sym.start.col
+                });
+            }
+        }
+        if (options.eval
+            && node instanceof AST_SymbolRef
+            && node.undeclared()
+            && node.name == "eval") {
+            AST_Node.warn("Eval is used [{file}:{line},{col}]", node.start);
+        }
+        if (options.unreferenced
+            && (node instanceof AST_SymbolDeclaration || node instanceof AST_Label)
+            && !(node instanceof AST_SymbolCatch)
+            && node.unreferenced()) {
+            AST_Node.warn("{type} {name} is declared but not referenced [{file}:{line},{col}]", {
+                type: node instanceof AST_Label ? "Label" : "Symbol",
+                name: node.name,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.func_arguments
+            && node instanceof AST_Lambda
+            && node.uses_arguments) {
+            AST_Node.warn("arguments used in function {name} [{file}:{line},{col}]", {
+                name: node.name ? node.name.name : "anonymous",
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.nested_defuns
+            && node instanceof AST_Defun
+            && !(tw.parent() instanceof AST_Scope)) {
+            AST_Node.warn("Function {name} declared in nested statement \"{type}\" [{file}:{line},{col}]", {
+                name: node.name.name,
+                type: tw.parent().TYPE,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+    });
+    this.walk(tw);
+});
diff --git a/node_modules/uglify-js/lib/sourcemap.js b/node_modules/uglify-js/lib/sourcemap.js
new file mode 100644
index 000000000..0be16bfc7
--- /dev/null
+++ b/node_modules/uglify-js/lib/sourcemap.js
@@ -0,0 +1,97 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+// a small wrapper around fitzgen's source-map library
+function SourceMap(options) {
+    options = defaults(options, {
+        file : null,
+        root : null,
+        orig : null,
+
+        orig_line_diff : 0,
+        dest_line_diff : 0,
+    });
+    var generator = new MOZ_SourceMap.SourceMapGenerator({
+        file       : options.file,
+        sourceRoot : options.root
+    });
+    var orig_map = options.orig && new MOZ_SourceMap.SourceMapConsumer(options.orig);
+
+    if (orig_map && Array.isArray(options.orig.sources)) {
+        orig_map._sources.toArray().forEach(function(source) {
+            var sourceContent = orig_map.sourceContentFor(source, true);
+            if (sourceContent) {
+                generator.setSourceContent(source, sourceContent);
+            }
+        });
+    }
+
+    function add(source, gen_line, gen_col, orig_line, orig_col, name) {
+        if (orig_map) {
+            var info = orig_map.originalPositionFor({
+                line: orig_line,
+                column: orig_col
+            });
+            if (info.source === null) {
+                return;
+            }
+            source = info.source;
+            orig_line = info.line;
+            orig_col = info.column;
+            name = info.name || name;
+        }
+        generator.addMapping({
+            generated : { line: gen_line + options.dest_line_diff, column: gen_col },
+            original  : { line: orig_line + options.orig_line_diff, column: orig_col },
+            source    : source,
+            name      : name
+        });
+    };
+    return {
+        add        : add,
+        get        : function() { return generator },
+        toString   : function() { return JSON.stringify(generator.toJSON()); }
+    };
+};
diff --git a/node_modules/uglify-js/lib/transform.js b/node_modules/uglify-js/lib/transform.js
new file mode 100644
index 000000000..3018e8ff0
--- /dev/null
+++ b/node_modules/uglify-js/lib/transform.js
@@ -0,0 +1,218 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+// Tree transformer helpers.
+
+function TreeTransformer(before, after) {
+    TreeWalker.call(this);
+    this.before = before;
+    this.after = after;
+}
+TreeTransformer.prototype = new TreeWalker;
+
+(function(undefined){
+
+    function _(node, descend) {
+        node.DEFMETHOD("transform", function(tw, in_list){
+            var x, y;
+            tw.push(this);
+            if (tw.before) x = tw.before(this, descend, in_list);
+            if (x === undefined) {
+                if (!tw.after) {
+                    x = this;
+                    descend(x, tw);
+                } else {
+                    tw.stack[tw.stack.length - 1] = x = this;
+                    descend(x, tw);
+                    y = tw.after(x, in_list);
+                    if (y !== undefined) x = y;
+                }
+            }
+            tw.pop(this);
+            return x;
+        });
+    };
+
+    function do_list(list, tw) {
+        return MAP(list, function(node){
+            return node.transform(tw, true);
+        });
+    };
+
+    _(AST_Node, noop);
+
+    _(AST_LabeledStatement, function(self, tw){
+        self.label = self.label.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+
+    _(AST_SimpleStatement, function(self, tw){
+        self.body = self.body.transform(tw);
+    });
+
+    _(AST_Block, function(self, tw){
+        self.body = do_list(self.body, tw);
+    });
+
+    _(AST_DWLoop, function(self, tw){
+        self.condition = self.condition.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+
+    _(AST_For, function(self, tw){
+        if (self.init) self.init = self.init.transform(tw);
+        if (self.condition) self.condition = self.condition.transform(tw);
+        if (self.step) self.step = self.step.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+
+    _(AST_ForIn, function(self, tw){
+        self.init = self.init.transform(tw);
+        self.object = self.object.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+
+    _(AST_With, function(self, tw){
+        self.expression = self.expression.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+
+    _(AST_Exit, function(self, tw){
+        if (self.value) self.value = self.value.transform(tw);
+    });
+
+    _(AST_LoopControl, function(self, tw){
+        if (self.label) self.label = self.label.transform(tw);
+    });
+
+    _(AST_If, function(self, tw){
+        self.condition = self.condition.transform(tw);
+        self.body = self.body.transform(tw);
+        if (self.alternative) self.alternative = self.alternative.transform(tw);
+    });
+
+    _(AST_Switch, function(self, tw){
+        self.expression = self.expression.transform(tw);
+        self.body = do_list(self.body, tw);
+    });
+
+    _(AST_Case, function(self, tw){
+        self.expression = self.expression.transform(tw);
+        self.body = do_list(self.body, tw);
+    });
+
+    _(AST_Try, function(self, tw){
+        self.body = do_list(self.body, tw);
+        if (self.bcatch) self.bcatch = self.bcatch.transform(tw);
+        if (self.bfinally) self.bfinally = self.bfinally.transform(tw);
+    });
+
+    _(AST_Catch, function(self, tw){
+        self.argname = self.argname.transform(tw);
+        self.body = do_list(self.body, tw);
+    });
+
+    _(AST_Definitions, function(self, tw){
+        self.definitions = do_list(self.definitions, tw);
+    });
+
+    _(AST_VarDef, function(self, tw){
+        self.name = self.name.transform(tw);
+        if (self.value) self.value = self.value.transform(tw);
+    });
+
+    _(AST_Lambda, function(self, tw){
+        if (self.name) self.name = self.name.transform(tw);
+        self.argnames = do_list(self.argnames, tw);
+        self.body = do_list(self.body, tw);
+    });
+
+    _(AST_Call, function(self, tw){
+        self.expression = self.expression.transform(tw);
+        self.args = do_list(self.args, tw);
+    });
+
+    _(AST_Seq, function(self, tw){
+        self.car = self.car.transform(tw);
+        self.cdr = self.cdr.transform(tw);
+    });
+
+    _(AST_Dot, function(self, tw){
+        self.expression = self.expression.transform(tw);
+    });
+
+    _(AST_Sub, function(self, tw){
+        self.expression = self.expression.transform(tw);
+        self.property = self.property.transform(tw);
+    });
+
+    _(AST_Unary, function(self, tw){
+        self.expression = self.expression.transform(tw);
+    });
+
+    _(AST_Binary, function(self, tw){
+        self.left = self.left.transform(tw);
+        self.right = self.right.transform(tw);
+    });
+
+    _(AST_Conditional, function(self, tw){
+        self.condition = self.condition.transform(tw);
+        self.consequent = self.consequent.transform(tw);
+        self.alternative = self.alternative.transform(tw);
+    });
+
+    _(AST_Array, function(self, tw){
+        self.elements = do_list(self.elements, tw);
+    });
+
+    _(AST_Object, function(self, tw){
+        self.properties = do_list(self.properties, tw);
+    });
+
+    _(AST_ObjectProperty, function(self, tw){
+        self.value = self.value.transform(tw);
+    });
+
+})();
diff --git a/node_modules/uglify-js/lib/utils.js b/node_modules/uglify-js/lib/utils.js
new file mode 100644
index 000000000..fdb204719
--- /dev/null
+++ b/node_modules/uglify-js/lib/utils.js
@@ -0,0 +1,362 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+function array_to_hash(a) {
+    var ret = Object.create(null);
+    for (var i = 0; i < a.length; ++i)
+        ret[a[i]] = true;
+    return ret;
+};
+
+function slice(a, start) {
+    return Array.prototype.slice.call(a, start || 0);
+};
+
+function characters(str) {
+    return str.split("");
+};
+
+function member(name, array) {
+    return array.indexOf(name) >= 0;
+};
+
+function find_if(func, array) {
+    for (var i = 0, n = array.length; i < n; ++i) {
+        if (func(array[i]))
+            return array[i];
+    }
+};
+
+function repeat_string(str, i) {
+    if (i <= 0) return "";
+    if (i == 1) return str;
+    var d = repeat_string(str, i >> 1);
+    d += d;
+    if (i & 1) d += str;
+    return d;
+};
+
+function configure_error_stack(fn) {
+    Object.defineProperty(fn.prototype, "stack", {
+        get: function() {
+            var err = new Error(this.message);
+            err.name = this.name;
+            try {
+                throw err;
+            } catch(e) {
+                return e.stack;
+            }
+        }
+    });
+}
+
+function DefaultsError(msg, defs) {
+    this.message = msg;
+    this.defs = defs;
+};
+DefaultsError.prototype = Object.create(Error.prototype);
+DefaultsError.prototype.constructor = DefaultsError;
+DefaultsError.prototype.name = "DefaultsError";
+configure_error_stack(DefaultsError);
+
+DefaultsError.croak = function(msg, defs) {
+    throw new DefaultsError(msg, defs);
+};
+
+function defaults(args, defs, croak) {
+    if (args === true)
+        args = {};
+    var ret = args || {};
+    if (croak) for (var i in ret) if (HOP(ret, i) && !HOP(defs, i))
+        DefaultsError.croak("`" + i + "` is not a supported option", defs);
+    for (var i in defs) if (HOP(defs, i)) {
+        ret[i] = (args && HOP(args, i)) ? args[i] : defs[i];
+    }
+    return ret;
+};
+
+function merge(obj, ext) {
+    var count = 0;
+    for (var i in ext) if (HOP(ext, i)) {
+        obj[i] = ext[i];
+        count++;
+    }
+    return count;
+};
+
+function noop() {}
+function return_false() { return false; }
+function return_true() { return true; }
+function return_this() { return this; }
+function return_null() { return null; }
+
+var MAP = (function(){
+    function MAP(a, f, backwards) {
+        var ret = [], top = [], i;
+        function doit() {
+            var val = f(a[i], i);
+            var is_last = val instanceof Last;
+            if (is_last) val = val.v;
+            if (val instanceof AtTop) {
+                val = val.v;
+                if (val instanceof Splice) {
+                    top.push.apply(top, backwards ? val.v.slice().reverse() : val.v);
+                } else {
+                    top.push(val);
+                }
+            }
+            else if (val !== skip) {
+                if (val instanceof Splice) {
+                    ret.push.apply(ret, backwards ? val.v.slice().reverse() : val.v);
+                } else {
+                    ret.push(val);
+                }
+            }
+            return is_last;
+        };
+        if (a instanceof Array) {
+            if (backwards) {
+                for (i = a.length; --i >= 0;) if (doit()) break;
+                ret.reverse();
+                top.reverse();
+            } else {
+                for (i = 0; i < a.length; ++i) if (doit()) break;
+            }
+        }
+        else {
+            for (i in a) if (HOP(a, i)) if (doit()) break;
+        }
+        return top.concat(ret);
+    };
+    MAP.at_top = function(val) { return new AtTop(val) };
+    MAP.splice = function(val) { return new Splice(val) };
+    MAP.last = function(val) { return new Last(val) };
+    var skip = MAP.skip = {};
+    function AtTop(val) { this.v = val };
+    function Splice(val) { this.v = val };
+    function Last(val) { this.v = val };
+    return MAP;
+})();
+
+function push_uniq(array, el) {
+    if (array.indexOf(el) < 0)
+        array.push(el);
+};
+
+function string_template(text, props) {
+    return text.replace(/\{(.+?)\}/g, function(str, p){
+        return props && props[p];
+    });
+};
+
+function remove(array, el) {
+    for (var i = array.length; --i >= 0;) {
+        if (array[i] === el) array.splice(i, 1);
+    }
+};
+
+function mergeSort(array, cmp) {
+    if (array.length < 2) return array.slice();
+    function merge(a, b) {
+        var r = [], ai = 0, bi = 0, i = 0;
+        while (ai < a.length && bi < b.length) {
+            cmp(a[ai], b[bi]) <= 0
+                ? r[i++] = a[ai++]
+                : r[i++] = b[bi++];
+        }
+        if (ai < a.length) r.push.apply(r, a.slice(ai));
+        if (bi < b.length) r.push.apply(r, b.slice(bi));
+        return r;
+    };
+    function _ms(a) {
+        if (a.length <= 1)
+            return a;
+        var m = Math.floor(a.length / 2), left = a.slice(0, m), right = a.slice(m);
+        left = _ms(left);
+        right = _ms(right);
+        return merge(left, right);
+    };
+    return _ms(array);
+};
+
+function set_difference(a, b) {
+    return a.filter(function(el){
+        return b.indexOf(el) < 0;
+    });
+};
+
+function set_intersection(a, b) {
+    return a.filter(function(el){
+        return b.indexOf(el) >= 0;
+    });
+};
+
+// this function is taken from Acorn [1], written by Marijn Haverbeke
+// [1] https://github.com/marijnh/acorn
+function makePredicate(words) {
+    if (!(words instanceof Array)) words = words.split(" ");
+    var f = "", cats = [];
+    out: for (var i = 0; i < words.length; ++i) {
+        for (var j = 0; j < cats.length; ++j)
+            if (cats[j][0].length == words[i].length) {
+                cats[j].push(words[i]);
+                continue out;
+            }
+        cats.push([words[i]]);
+    }
+    function quote(word) {
+        return JSON.stringify(word).replace(/[\u2028\u2029]/g, function(s) {
+            switch (s) {
+                case "\u2028": return "\\u2028";
+                case "\u2029": return "\\u2029";
+            }
+            return s;
+        });
+    }
+    function compareTo(arr) {
+        if (arr.length == 1) return f += "return str === " + quote(arr[0]) + ";";
+        f += "switch(str){";
+        for (var i = 0; i < arr.length; ++i) f += "case " + quote(arr[i]) + ":";
+        f += "return true}return false;";
+    }
+    // When there are more than three length categories, an outer
+    // switch first dispatches on the lengths, to save on comparisons.
+    if (cats.length > 3) {
+        cats.sort(function(a, b) {return b.length - a.length;});
+        f += "switch(str.length){";
+        for (var i = 0; i < cats.length; ++i) {
+            var cat = cats[i];
+            f += "case " + cat[0].length + ":";
+            compareTo(cat);
+        }
+        f += "}";
+        // Otherwise, simply generate a flat `switch` statement.
+    } else {
+        compareTo(words);
+    }
+    return new Function("str", f);
+};
+
+function all(array, predicate) {
+    for (var i = array.length; --i >= 0;)
+        if (!predicate(array[i]))
+            return false;
+    return true;
+};
+
+function Dictionary() {
+    this._values = Object.create(null);
+    this._size = 0;
+};
+Dictionary.prototype = {
+    set: function(key, val) {
+        if (!this.has(key)) ++this._size;
+        this._values["$" + key] = val;
+        return this;
+    },
+    add: function(key, val) {
+        if (this.has(key)) {
+            this.get(key).push(val);
+        } else {
+            this.set(key, [ val ]);
+        }
+        return this;
+    },
+    get: function(key) { return this._values["$" + key] },
+    del: function(key) {
+        if (this.has(key)) {
+            --this._size;
+            delete this._values["$" + key];
+        }
+        return this;
+    },
+    has: function(key) { return ("$" + key) in this._values },
+    each: function(f) {
+        for (var i in this._values)
+            f(this._values[i], i.substr(1));
+    },
+    size: function() {
+        return this._size;
+    },
+    map: function(f) {
+        var ret = [];
+        for (var i in this._values)
+            ret.push(f(this._values[i], i.substr(1)));
+        return ret;
+    },
+    toObject: function() { return this._values }
+};
+Dictionary.fromObject = function(obj) {
+    var dict = new Dictionary();
+    dict._size = merge(dict._values, obj);
+    return dict;
+};
+
+function HOP(obj, prop) {
+    return Object.prototype.hasOwnProperty.call(obj, prop);
+}
+
+// return true if the node at the top of the stack (that means the
+// innermost node in the current output) is lexically the first in
+// a statement.
+function first_in_statement(stack) {
+    var node = stack.parent(-1);
+    for (var i = 0, p; p = stack.parent(i); i++) {
+        if (p instanceof AST_Statement && p.body === node)
+            return true;
+        if ((p instanceof AST_Seq           && p.car === node        ) ||
+            (p instanceof AST_Call          && p.expression === node && !(p instanceof AST_New) ) ||
+            (p instanceof AST_Dot           && p.expression === node ) ||
+            (p instanceof AST_Sub           && p.expression === node ) ||
+            (p instanceof AST_Conditional   && p.condition === node  ) ||
+            (p instanceof AST_Binary        && p.left === node       ) ||
+            (p instanceof AST_UnaryPostfix  && p.expression === node ))
+        {
+            node = p;
+        } else {
+            return false;
+        }
+    }
+}
diff --git a/node_modules/uglify-js/node_modules/camelcase/index.js b/node_modules/uglify-js/node_modules/camelcase/index.js
new file mode 100644
index 000000000..b46e10094
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/camelcase/index.js
@@ -0,0 +1,27 @@
+'use strict';
+module.exports = function () {
+	var str = [].map.call(arguments, function (str) {
+		return str.trim();
+	}).filter(function (str) {
+		return str.length;
+	}).join('-');
+
+	if (!str.length) {
+		return '';
+	}
+
+	if (str.length === 1 || !(/[_.\- ]+/).test(str) ) {
+		if (str[0] === str[0].toLowerCase() && str.slice(1) !== str.slice(1).toLowerCase()) {
+			return str;
+		}
+
+		return str.toLowerCase();
+	}
+
+	return str
+	.replace(/^[_.\- ]+/, '')
+	.toLowerCase()
+	.replace(/[_.\- ]+(\w|$)/g, function (m, p1) {
+		return p1.toUpperCase();
+	});
+};
diff --git a/node_modules/uglify-js/node_modules/camelcase/license b/node_modules/uglify-js/node_modules/camelcase/license
new file mode 100644
index 000000000..654d0bfe9
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/camelcase/license
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/node_modules/uglify-js/node_modules/camelcase/package.json b/node_modules/uglify-js/node_modules/camelcase/package.json
new file mode 100644
index 000000000..34f75e745
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/camelcase/package.json
@@ -0,0 +1,38 @@
+{
+  "name": "camelcase",
+  "version": "1.2.1",
+  "description": "Convert a dash/dot/underscore/space separated string to camelCase: foo-bar → fooBar",
+  "license": "MIT",
+  "repository": "sindresorhus/camelcase",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "http://sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "scripts": {
+    "test": "node test.js"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "camelcase",
+    "camel-case",
+    "camel",
+    "case",
+    "dash",
+    "hyphen",
+    "dot",
+    "underscore",
+    "separator",
+    "string",
+    "text",
+    "convert"
+  ],
+  "devDependencies": {
+    "ava": "0.0.4"
+  }
+}
diff --git a/node_modules/uglify-js/node_modules/camelcase/readme.md b/node_modules/uglify-js/node_modules/camelcase/readme.md
new file mode 100644
index 000000000..516dc3984
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/camelcase/readme.md
@@ -0,0 +1,56 @@
+# camelcase [![Build Status](https://travis-ci.org/sindresorhus/camelcase.svg?branch=master)](https://travis-ci.org/sindresorhus/camelcase)
+
+> Convert a dash/dot/underscore/space separated string to camelCase: `foo-bar` → `fooBar`
+
+
+## Install
+
+```sh
+$ npm install --save camelcase
+```
+
+
+## Usage
+
+```js
+var camelCase = require('camelcase');
+
+camelCase('foo-bar');
+//=> fooBar
+
+camelCase('foo_bar');
+//=> fooBar
+
+camelCase('Foo-Bar');
+//=> fooBar
+
+camelCase('--foo.bar');
+//=> fooBar
+
+camelCase('__foo__bar__');
+//=> fooBar
+
+camelCase('foo bar');
+//=> fooBar
+
+console.log(process.argv[3]);
+//=> --foo-bar
+camelCase(process.argv[3]);
+//=> fooBar
+
+camelCase('foo', 'bar');
+//=> fooBar
+
+camelCase('__foo__', '--bar');
+//=> fooBar
+```
+
+
+## Related
+
+See [`decamelize`](https://github.com/sindresorhus/decamelize) for the inverse.
+
+
+## License
+
+MIT © [Sindre Sorhus](http://sindresorhus.com)
diff --git a/node_modules/uglify-js/node_modules/yargs/CHANGELOG.md b/node_modules/uglify-js/node_modules/yargs/CHANGELOG.md
new file mode 100644
index 000000000..9c3607831
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/CHANGELOG.md
@@ -0,0 +1,374 @@
+## Change Log
+
+### v3.10.0 (2015/05/29 04:25 +00:00)
+
+- [#165](https://github.com/bcoe/yargs/pull/165) expose yargs.terminalWidth() thanks @ensonic (@bcoe)
+- [#164](https://github.com/bcoe/yargs/pull/164) better array handling thanks @getify (@bcoe)
+
+### v3.9.1 (2015/05/20 05:14 +00:00)
+- [b6662b6](https://github.com/bcoe/yargs/commit/b6662b6774cfeab4876f41ec5e2f67b7698f4e2f) clarify .config() docs (@linclark)
+- [0291360](https://github.com/bcoe/yargs/commit/02913606285ce31ce81d7f12c48d8a3029776ec7) fixed tests, switched to nyc for coverage, fixed security issue, added Lin as collaborator (@bcoe)
+
+### v3.9.0 (2015/05/10 18:32 +00:00)
+- [#157](https://github.com/bcoe/yargs/pull/157) Merge pull request #157 from bcoe/command-yargs. allows handling of command specific arguments. Thanks for the suggestion @ohjames (@bcoe)
+- [#158](https://github.com/bcoe/yargs/pull/158) Merge pull request #158 from kemitchell/spdx-license. Update license format (@kemitchell)
+
+### v3.8.0 (2015/04/24 23:10 +00:00)
+- [#154](https://github.com/bcoe/yargs/pull/154) showHelp's method signature was misleading fixes #153 (@bcoe)
+- [#151](https://github.com/bcoe/yargs/pull/151) refactor yargs' table layout logic to use new helper library (@bcoe)
+- [#150](https://github.com/bcoe/yargs/pull/150) Fix README example in argument requirements (@annonymouse)
+
+### v3.7.2 (2015/04/13 11:52 -07:00)
+
+* [679fbbf](https://github.com/bcoe/yargs/commit/679fbbf55904030ccee8a2635e8e5f46551ab2f0) updated yargs to use the [standard](https://github.com/feross/standard) style guide (agokjr)
+* [22382ee](https://github.com/bcoe/yargs/commit/22382ee9f5b495bc2586c1758cd1091cec3647f9 various bug fixes for $0 (@nylen)
+
+### v3.7.1 (2015/04/10 11:06 -07:00)
+
+* [89e1992](https://github.com/bcoe/yargs/commit/89e1992a004ba73609b5f9ee6890c4060857aba4) detect iojs bin along with node bin. (@bcoe)
+* [755509e](https://github.com/bcoe/yargs/commit/755509ea90041e5f7833bba3b8c5deffe56f0aab) improvements to example documentation in README.md (@rstacruz)
+* [0d2dfc8](https://github.com/bcoe/yargs/commit/0d2dfc822a43418242908ad97ddd5291a1b35dc6) showHelp() no longer requires that .argv has been called (@bcoe)
+
+### v3.7.0 (2015/04/04 02:29 -07:00)
+
+* [56cbe2d](https://github.com/bcoe/yargs/commit/56cbe2ddd33dc176dcbf97ba40559864a9f114e4) make .requiresArg() work with type hints. (@bcoe).
+* [2f5d562](https://github.com/bcoe/yargs/commit/2f5d5624f736741deeedf6a664d57bc4d857bdd0) serialize arrays and objects in usage strings. (@bcoe).
+* [5126304](https://github.com/bcoe/yargs/commit/5126304dd18351fc28f10530616fdd9361e0af98) be more lenient about alias/primary key ordering in chaining API. (@bcoe)
+
+### v3.6.0 (2015/03/21 01:00 +00:00)
+- [4e24e22](https://github.com/bcoe/yargs/commit/4e24e22e6a195e55ab943ede704a0231ac33b99c) support for .js configuration files. (@pirxpilot)
+
+### v3.5.4 (2015/03/12 05:56 +00:00)
+- [c16cc08](https://github.com/bcoe/yargs/commit/c16cc085501155cf7fd853ccdf8584b05ab92b78) message for non-option arguments is now optional, thanks to (@raine)
+
+### v3.5.3 (2015/03/09 06:14 +00:00)
+- [870b428](https://github.com/bcoe/yargs/commit/870b428cf515d560926ca392555b7ad57dba9e3d) completion script was missing in package.json (@bcoe)
+
+### v3.5.2 (2015/03/09 06:11 +00:00)
+- [58a4b24](https://github.com/bcoe/yargs/commit/58a4b2473ebbb326713d522be53e32d3aabb08d2) parse was being called multiple times, resulting in strange behavior (@bcoe)
+
+### v3.5.1 (2015/03/09 04:55 +00:00)
+- [4e588e0](https://github.com/bcoe/yargs/commit/4e588e055afbeb9336533095f051496e3977f515) accidentally left testing logic in (@bcoe)
+
+### v3.5.0 (2015/03/09 04:49 +00:00)
+- [718bacd](https://github.com/bcoe/yargs/commit/718bacd81b9b44f786af76b2afe491fe06274f19) added support for bash completions see #4 (@bcoe)
+- [a192882](https://github.com/bcoe/yargs/commit/a19288270fc431396c42af01125eeb4443664528) downgrade to mocha 2.1.0 until https://github.com/mochajs/mocha/issues/1585 can be sorted out (@bcoe)
+
+### v3.4.7 (2015/03/09 04:09 +00:00)
+- [9845e5c](https://github.com/bcoe/yargs/commit/9845e5c1a9c684ba0be3f0bfb40e7b62ab49d9c8) the Argv singleton was not being updated when manually parsing arguments, fixes #114 (@bcoe)
+
+### v3.4.6 (2015/03/09 04:01 +00:00)
+- [45b4c80](https://github.com/bcoe/yargs/commit/45b4c80b890d02770b0a94f326695a8a566e8fe9) set placeholders for all keys fixes #115 (@bcoe)
+
+### v3.4.5 (2015/03/01 20:31 +00:00)
+- [a758e0b](https://github.com/bcoe/yargs/commit/a758e0b2556184f067cf3d9c4ef886d39817ebd2) fix for count consuming too many arguments (@bcoe)
+
+### v3.4.4 (2015/02/28 04:52 +00:00)
+- [0476af7](https://github.com/bcoe/yargs/commit/0476af757966acf980d998b45108221d4888cfcb) added nargs feature, allowing you to specify the number of arguments after an option (@bcoe)
+- [092477d](https://github.com/bcoe/yargs/commit/092477d7ab3efbf0ba11cede57f7d8cfc70b024f) updated README with full example of v3.0 API (@bcoe)
+
+### v3.3.3 (2015/02/28 04:23 +00:00)
+- [0c4b769](https://github.com/bcoe/yargs/commit/0c4b769516cd8d93a7c4e5e675628ae0049aa9a8) remove string dependency, which conflicted with other libraries see #106 (@bcoe)
+
+### v3.3.2 (2015/02/28 04:11 +00:00)
+- [2a98906](https://github.com/bcoe/yargs/commit/2a9890675821c0e7a12f146ce008b0562cb8ec9a) add $0 to epilog (@schnittstabil)
+
+### v3.3.1 (2015/02/24 03:28 +00:00)
+- [ad485ce](https://github.com/bcoe/yargs/commit/ad485ce748ebdfce25b88ef9d6e83d97a2f68987) fix for applying defaults to camel-case args (@bcoe)
+
+### v3.3.0 (2015/02/24 00:49 +00:00)
+- [8bfe36d](https://github.com/bcoe/yargs/commit/8bfe36d7fb0f93a799ea3f4c756a7467c320f8c0) fix and document restart() command, as a tool for building nested CLIs (@bcoe)
+
+### v3.2.1 (2015/02/22 05:45 +00:00)
+- [49a6d18](https://github.com/bcoe/yargs/commit/49a6d1822a4ef9b1ea6f90cc366be60912628885) you can now provide a function that generates a default value (@bcoe)
+
+### v3.2.0 (2015/02/22 05:24 +00:00)
+- [7a55886](https://github.com/bcoe/yargs/commit/7a55886c9343cf71a20744ca5cdd56d2ea7412d5) improvements to yargs two-column text layout (@bcoe)
+- [b6ab513](https://github.com/bcoe/yargs/commit/b6ab5136a4c3fa6aa496f6b6360382e403183989) Tweak NPM version badge (@nylen)
+
+### v3.1.0 (2015/02/19 19:37 +00:00)
+- [9bd2379](https://github.com/bcoe/yargs/commit/9bd237921cf1b61fd9f32c0e6d23f572fc225861) version now accepts a function, making it easy to load version #s from a package.json (@bcoe)
+
+### v3.0.4 (2015/02/14 01:40 +00:00)
+- [0b7c19b](https://github.com/bcoe/yargs/commit/0b7c19beaecb747267ca4cc10e5cb2a8550bc4b7) various fixes for dot-notation handling (@bcoe)
+
+### v3.0.3 (2015/02/14 00:59 +00:00)
+- [c3f35e9](https://github.com/bcoe/yargs/commit/c3f35e99bd5a0d278073fcadd95e2d778616cc17) make sure dot-notation is applied to aliases (@bcoe)
+
+### 3.0.2 (2015/02/13 16:50 +00:00)
+- [74c8967](https://github.com/bcoe/yargs/commit/74c8967c340c204a0a7edf8a702b6f46c2705435) document epilog shorthand of epilogue. (@bcoe)
+- [670110f](https://github.com/bcoe/yargs/commit/670110fc01bedc4831b6fec6afac54517d5a71bc) any non-truthy value now causes check to fail see #76 (@bcoe)
+- [0d8f791](https://github.com/bcoe/yargs/commit/0d8f791a33c11ced4cd431ea8d3d3a337d456b56) finished implementing my wish-list of fetures for yargs 3.0. see #88 (@bcoe)
+- [5768447](https://github.com/bcoe/yargs/commit/5768447447c4c8e8304f178846206ce86540f063) fix coverage. (@bcoe)
+- [82e793f](https://github.com/bcoe/yargs/commit/82e793f3f61c41259eaacb67f0796aea2cf2aaa0) detect console width and perform word-wrapping. (@bcoe)
+- [67476b3](https://github.com/bcoe/yargs/commit/67476b37eea07fee55f23f35b9e0c7d76682b86d) refactor two-column table layout so that we can use it for examples and usage (@bcoe)
+- [4724cdf](https://github.com/bcoe/yargs/commit/4724cdfcc8e37ae1ca3dcce9d762f476e9ef4bb4) major refactor of index.js, in prep for 3.x release. (@bcoe)
+
+### v2.3.0 (2015/02/08 20:41 +00:00)
+- [d824620](https://github.com/bcoe/yargs/commit/d824620493df4e63664af1fe320764dd1a9244e6) allow for undefined boolean defaults (@ashi009)
+
+### v2.2.0 (2015/02/08 20:07 +00:00)
+- [d6edd98](https://github.com/bcoe/yargs/commit/d6edd9848826e7389ed1393858c45d03961365fd) in-prep for further refactoring, and a 3.x release I've shuffled some things around and gotten test-coverage to 100%. (@bcoe)
+
+### v2.1.2 (2015/02/08 06:05 +00:00)
+- [d640745](https://github.com/bcoe/yargs/commit/d640745a7b9f8d476e0223879d056d18d9c265c4) switch to path.relative (@bcoe)
+- [3bfd41f](https://github.com/bcoe/yargs/commit/3bfd41ff262a041f29d828b88936a79c63cad594) remove mocha.opts. (@bcoe)
+- [47a2f35](https://github.com/bcoe/yargs/commit/47a2f357091db70903a402d6765501c1d63f15fe) document using .string('_') for string ids. see #56 (@bcoe)
+- [#57](https://github.com/bcoe/yargs/pull/57) Merge pull request #57 from eush77/option-readme (@eush77)
+
+### v2.1.1 (2015/02/06 08:08 +00:00)
+- [01c6c61](https://github.com/bcoe/yargs/commit/01c6c61d67b4ebf88f41f0b32a345ec67f0ac17d) fix for #71, 'newAliases' of undefined (@bcoe)
+
+### v2.1.0 (2015/02/06 07:59 +00:00)
+- [6a1a3fa](https://github.com/bcoe/yargs/commit/6a1a3fa731958e26ccd56885f183dd8985cc828f) try to guess argument types, and apply sensible defaults see #73 (@bcoe)
+
+### v2.0.1 (2015/02/06 07:54 +00:00)
+- [96a06b2](https://github.com/bcoe/yargs/commit/96a06b2650ff1d085a52b7328d8bba614c20cc12) Fix for strange behavior with --sort option, see #51 (@bcoe)
+
+### v2.0.0 (2015/02/06 07:45 +00:00)
+- [0250517](https://github.com/bcoe/yargs/commit/0250517c9643e53f431b824e8ccfa54937414011) - [108fb84](https://github.com/bcoe/yargs/commit/108fb8409a3a63dcaf99d917fe4dfcfaa1de236d) fixed bug with boolean parsing, when bools separated by = see #66 (@bcoe)
+- [a465a59](https://github.com/bcoe/yargs/commit/a465a5915f912715738de890982e4f8395958b10) Add `files` field to the package.json (@shinnn)
+- [31043de](https://github.com/bcoe/yargs/commit/31043de7a38a17c4c97711f1099f5fb164334db3) fix for yargs.argv having the same keys added multiple times see #63 (@bcoe)
+- [2d68c5b](https://github.com/bcoe/yargs/commit/2d68c5b91c976431001c4863ce47c9297850f1ad) Disable process.exit calls using .exitProcess(false) (@cianclarke)
+- [45da9ec](https://github.com/bcoe/yargs/commit/45da9ec4c55a7bd394721bc6a1db0dabad7bc52a) Mention .option in README (@eush77)
+
+### v1.3.2 (2014/10/06 21:56 +00:00)
+- [b8d3472](https://github.com/bcoe/yargs/commit/b8d34725482e5821a3cc809c0df71378f282f526) 1.3.2 (@chevex)
+
+### list (2014/08/30 18:41 +00:00)
+- [fbc777f](https://github.com/bcoe/yargs/commit/fbc777f416eeefd37c84e44d27d7dfc7c1925721) Now that yargs is the successor to optimist, I'm changing the README language to be more universal. Pirate speak isn't very accessible to non-native speakers. (@chevex)
+- [a54d068](https://github.com/bcoe/yargs/commit/a54d0682ae2efc2394d407ab171cc8a8bbd135ea) version output will not print extra newline (@boneskull)
+- [1cef5d6](https://github.com/bcoe/yargs/commit/1cef5d62a9d6d61a3948a49574892e01932cc6ae) Added contributors section to package.json (@chrisn)
+- [cc295c0](https://github.com/bcoe/yargs/commit/cc295c0a80a2de267e0155b60d315fc4b6f7c709) Added 'require' and 'required' as synonyms for 'demand' (@chrisn)
+- [d0bf951](https://github.com/bcoe/yargs/commit/d0bf951d949066b6280101ed606593d079ee15c8) Updating minimist. (@chevex)
+- [c15f8e7](https://github.com/bcoe/yargs/commit/c15f8e7f245b261e542cf205ce4f4313630cbdb4) Fix #31 (bad interaction between camelCase options and strict mode) (@nylen)
+- [d991b9b](https://github.com/bcoe/yargs/commit/d991b9be687a68812dee1e3b185ba64b7778b82d) Added .help() and .version() methods (@chrisn)
+- [e8c8aa4](https://github.com/bcoe/yargs/commit/e8c8aa46268379357cb11e9fc34b8c403037724b) Added .showHelpOnFail() method (@chrisn)
+- [e855af4](https://github.com/bcoe/yargs/commit/e855af4a933ea966b5bbdd3c4c6397a4bac1a053) Allow boolean flag with .demand() (@chrisn)
+- [14dbec2](https://github.com/bcoe/yargs/commit/14dbec24fb7380683198e2b20c4deb8423e64bea) Fixes issue #22. Arguments are no longer printed to the console when using .config. (@chevex)
+- [bef74fc](https://github.com/bcoe/yargs/commit/bef74fcddc1544598a804f80d0a3728459f196bf) Informing users that Yargs is the official optimist successor. (@chevex)
+- [#24](https://github.com/bcoe/yargs/pull/24) Merge pull request #24 from chrisn/strict (@chrisn)
+- [889a2b2](https://github.com/bcoe/yargs/commit/889a2b28eb9768801b05163360a470d0fd6c8b79) Added requiresArg option, for options that require values (@chrisn)
+- [eb16369](https://github.com/bcoe/yargs/commit/eb163692262be1fe80b992fd8803d5923c5a9b18) Added .strict() method, to report error if unknown arguments are given (@chrisn)
+- [0471c3f](https://github.com/bcoe/yargs/commit/0471c3fd999e1ad4e6cded88b8aa02013b66d14f) Changed optimist to yargs in usage-options.js example (@chrisn)
+- [5c88f74](https://github.com/bcoe/yargs/commit/5c88f74e3cf031b17c54b4b6606c83e485ff520e) Change optimist to yargs in examples (@chrisn)
+- [66f12c8](https://github.com/bcoe/yargs/commit/66f12c82ba3c943e4de8ca862980e835da8ecb3a) Fix a couple of bad interactions between aliases and defaults (@nylen)
+- [8fa1d80](https://github.com/bcoe/yargs/commit/8fa1d80f14b03eb1f2898863a61f1d1615bceb50) Document second argument of usage(message, opts) (@Gobie)
+- [56e6528](https://github.com/bcoe/yargs/commit/56e6528cf674ff70d63083fb044ff240f608448e) For "--some-option", also set argv.someOption (@nylen)
+- [ed5f6d3](https://github.com/bcoe/yargs/commit/ed5f6d33f57ad1086b11c91b51100f7c6c7fa8ee) Finished porting unit tests to Mocha. (@chevex)
+
+### v1.0.15 (2014/02/05 23:18 +00:00)
+- [e2b1fc0](https://github.com/bcoe/yargs/commit/e2b1fc0c4a59cf532ae9b01b275e1ef57eeb64d2) 1.0.15 update to badges (@chevex)
+
+### v1.0.14 (2014/02/05 23:17 +00:00)
+- [f33bbb0](https://github.com/bcoe/yargs/commit/f33bbb0f00fe18960f849cc8e15a7428a4cd59b8) Revert "Fixed issue which caused .demand function not to work correctly." (@chevex)
+
+### v1.0.13 (2014/02/05 22:13 +00:00)
+- [6509e5e](https://github.com/bcoe/yargs/commit/6509e5e7dee6ef1a1f60eea104be0faa1a045075) Fixed issue which caused .demand function not to work correctly. (@chevex)
+
+### v1.0.12 (2013/12/13 00:09 +00:00)
+- [05eb267](https://github.com/bcoe/yargs/commit/05eb26741c9ce446b33ff006e5d33221f53eaceb) 1.0.12 (@chevex)
+
+### v1.0.11 (2013/12/13 00:07 +00:00)
+- [c1bde46](https://github.com/bcoe/yargs/commit/c1bde46e37318a68b87d17a50c130c861d6ce4a9) 1.0.11 (@chevex)
+
+### v1.0.10 (2013/12/12 23:57 +00:00)
+- [dfebf81](https://github.com/bcoe/yargs/commit/dfebf8164c25c650701528ee581ca483a99dc21c) Fixed formatting in README (@chevex)
+
+### v1.0.9 (2013/12/12 23:47 +00:00)
+- [0b4e34a](https://github.com/bcoe/yargs/commit/0b4e34af5e6d84a9dbb3bb6d02cd87588031c182) Update README.md (@chevex)
+
+### v1.0.8 (2013/12/06 16:36 +00:00)
+- [#1](https://github.com/bcoe/yargs/pull/1) fix error caused by check() see #1 (@martinheidegger)
+
+### v1.0.7 (2013/11/24 18:01 +00:00)
+- [a247d88](https://github.com/bcoe/yargs/commit/a247d88d6e46644cbb7303c18b1bb678fc132d72) Modified Pirate Joe image. (@chevex)
+
+### v1.0.6 (2013/11/23 19:21 +00:00)
+- [d7f69e1](https://github.com/bcoe/yargs/commit/d7f69e1d34bc929736a8bdccdc724583e21b7eab) Updated Pirate Joe image. (@chevex)
+
+### v1.0.5 (2013/11/23 19:09 +00:00)
+- [ece809c](https://github.com/bcoe/yargs/commit/ece809cf317cc659175e1d66d87f3ca68c2760be) Updated readme notice again. (@chevex)
+
+### v1.0.4 (2013/11/23 19:05 +00:00)
+- [9e81e81](https://github.com/bcoe/yargs/commit/9e81e81654028f83ba86ffc3ac772a0476084e5e) Updated README with a notice about yargs being a fork of optimist and what that implies. (@chevex)
+
+### v1.0.3 (2013/11/23 17:43 +00:00)
+- [65e7a78](https://github.com/bcoe/yargs/commit/65e7a782c86764944d63d084416aba9ee6019c5f) Changed some small wording in README.md. (@chevex)
+- [459e20e](https://github.com/bcoe/yargs/commit/459e20e539b366b85128dd281ccd42221e96c7da) Fix a bug in the options function, when string and boolean options weren't applied to aliases. (@shockone)
+
+### v1.0.2 (2013/11/23 09:46 +00:00)
+- [3d80ebe](https://github.com/bcoe/yargs/commit/3d80ebed866d3799224b6f7d596247186a3898a9) 1.0.2 (@chevex)
+
+### v1.0.1 (2013/11/23 09:39 +00:00)
+- [f80ff36](https://github.com/bcoe/yargs/commit/f80ff3642d580d4b68bf9f5a94277481bd027142) Updated image. (@chevex)
+
+### v1.0.0 (2013/11/23 09:33 +00:00)
+- [54e31d5](https://github.com/bcoe/yargs/commit/54e31d505f820b80af13644e460894b320bf25a3) Rebranded from optimist to yargs in the spirit of the fork :D (@chevex)
+- [4ebb6c5](https://github.com/bcoe/yargs/commit/4ebb6c59f44787db7c24c5b8fe2680f01a23f498) Added documentation for demandCount(). (@chevex)
+- [4561ce6](https://github.com/bcoe/yargs/commit/4561ce66dcffa95f49e8b4449b25b94cd68acb25) Simplified the error messages returned by .check(). (@chevex)
+- [661c678](https://github.com/bcoe/yargs/commit/661c67886f479b16254a830b7e1db3be29e6b7a6) Fixed an issue with demand not accepting a zero value. (@chevex)
+- [731dd3c](https://github.com/bcoe/yargs/commit/731dd3c37624790490bd6df4d5f1da8f4348279e) Add .fail(fn) so death isn't the only option. Should fix issue #39. (@chevex)
+- [fa15417](https://github.com/bcoe/yargs/commit/fa15417ff9e70dace0d726627a5818654824c1d8) Added a few missing 'return self' (@chevex)
+- [e655e4d](https://github.com/bcoe/yargs/commit/e655e4d99d1ae1d3695ef755d51c2de08d669761) Fix showing help in certain JS environments. (@chevex)
+- [a746a31](https://github.com/bcoe/yargs/commit/a746a31cd47c87327028e6ea33762d6187ec5c87) Better string representation of default values. (@chevex)
+- [6134619](https://github.com/bcoe/yargs/commit/6134619a7e90b911d5443230b644c5d447c1a68c) Implies: conditional demands (@chevex)
+- [046b93b](https://github.com/bcoe/yargs/commit/046b93b5d40a27367af4cb29726e4d781d934639) Added support for JSON config files. (@chevex)
+- [a677ec0](https://github.com/bcoe/yargs/commit/a677ec0a0ecccd99c75e571d03323f950688da03) Add .example(cmd, desc) feature. (@chevex)
+- [1bd4375](https://github.com/bcoe/yargs/commit/1bd4375e11327ba1687d4bb6e5e9f3c30c1be2af) Added 'defaults' as alias to 'default' so as to avoid usage of a reserved keyword. (@chevex)
+- [6b753c1](https://github.com/bcoe/yargs/commit/6b753c16ca09e723060e70b773b430323b29c45c) add .normalize(args..) support for normalizing paths (@chevex)
+- [33d7d59](https://github.com/bcoe/yargs/commit/33d7d59341d364f03d3a25f0a55cb99004dbbe4b) Customize error messages with demand(key, msg) (@chevex)
+- [647d37f](https://github.com/bcoe/yargs/commit/647d37f164c20f4bafbf67dd9db6cd6e2cd3b49f) Merge branch 'rewrite-duplicate-test' of github.com:isbadawi/node-optimist (@chevex)
+- [9059d1a](https://github.com/bcoe/yargs/commit/9059d1ad5e8aea686c2a01c89a23efdf929fff2e) Pass aliases object to check functions for greater versatility. (@chevex)
+- [623dc26](https://github.com/bcoe/yargs/commit/623dc26c7331abff2465ef8532e3418996d42fe6) Added ability to count boolean options and rolled minimist library back into project. (@chevex)
+- [49f0dce](https://github.com/bcoe/yargs/commit/49f0dcef35de4db544c3966350d36eb5838703f6) Fixed small typo. (@chevex)
+- [79ec980](https://github.com/bcoe/yargs/commit/79ec9806d9ca6eb0014cfa4b6d1849f4f004baf2) Removed dependency on wordwrap module. (@chevex)
+- [ea14630](https://github.com/bcoe/yargs/commit/ea14630feddd69d1de99dd8c0e08948f4c91f00a) Merge branch 'master' of github.com:chbrown/node-optimist (@chevex)
+- [2b75da2](https://github.com/bcoe/yargs/commit/2b75da2624061e0f4f3107d20303c06ec9054906) Merge branch 'master' of github.com:seanzhou1023/node-optimist (@chevex)
+- [d9bda11](https://github.com/bcoe/yargs/commit/d9bda1116e26f3b40e833ca9ca19263afea53565) Merge branch 'patch-1' of github.com:thefourtheye/node-optimist (@chevex)
+- [d6cc606](https://github.com/bcoe/yargs/commit/d6cc6064a4f1bea38a16a4430b8a1334832fbeff) Renamed README. (@chevex)
+- [9498d3f](https://github.com/bcoe/yargs/commit/9498d3f59acfb5e102826503e681623c3a64b178) Renamed readme and added .gitignore. (@chevex)
+- [bbd1fe3](https://github.com/bcoe/yargs/commit/bbd1fe37fefa366dde0fb3dc44d91fe8b28f57f5) Included examples for ```help``` and ```showHelp``` functions and fixed few formatting issues (@thefourtheye)
+- [37fea04](https://github.com/bcoe/yargs/commit/37fea0470a5796a0294c1dcfff68d8041650e622) .alias({}) behaves differently based on mapping direction when generating descriptions (@chbrown)
+- [855b20d](https://github.com/bcoe/yargs/commit/855b20d0be567ca121d06b30bea64001b74f3d6d) Documented function signatures are useful for dynamically typed languages. (@chbrown)
+
+### 0.6.0 (2013/06/25 08:48 +00:00)
+- [d37bfe0](https://github.com/bcoe/yargs/commit/d37bfe05ae6d295a0ab481efe4881222412791f4) all tests passing using minimist (@substack)
+- [76f1352](https://github.com/bcoe/yargs/commit/76f135270399d01f2bbc621e524a5966e5c422fd) all parse tests now passing (@substack)
+- [a7b6754](https://github.com/bcoe/yargs/commit/a7b6754276c38d1565479a5685c3781aeb947816) using minimist, some tests passing (@substack)
+- [6655688](https://github.com/bcoe/yargs/commit/66556882aa731cbbbe16cc4d42c85740a2e98099) Give credit where its due (@DeadAlready)
+- [602a2a9](https://github.com/bcoe/yargs/commit/602a2a92a459f93704794ad51b115bbb08b535ce) v0.5.3 - Remove wordwrap as dependency (@DeadAlready)
+
+### 0.5.2 (2013/05/31 03:46 +00:00)
+- [4497ca5](https://github.com/bcoe/yargs/commit/4497ca55e332760a37b866ec119ded347ca27a87) fixed the whitespace bug without breaking anything else (@substack)
+- [5a3dd1a](https://github.com/bcoe/yargs/commit/5a3dd1a4e0211a38613c6e02f61328e1031953fa) failing test for whitespace arg (@substack)
+
+### 0.5.1 (2013/05/30 07:17 +00:00)
+- [a20228f](https://github.com/bcoe/yargs/commit/a20228f62a454755dd07f628a7c5759113918327) fix parse() to work with functions before it (@substack)
+- [b13bd4c](https://github.com/bcoe/yargs/commit/b13bd4cac856a9821d42fa173bdb58f089365a7d) failing test for parse() with modifiers (@substack)
+
+### 0.5.0 (2013/05/18 21:59 +00:00)
+- [c474a64](https://github.com/bcoe/yargs/commit/c474a649231527915c222156e3b40806d365a87c) fixes for dash (@substack)
+
+### 0.4.0 (2013/04/13 19:03 +00:00)
+- [dafe3e1](https://github.com/bcoe/yargs/commit/dafe3e18d7c6e7c2d68e06559df0e5cbea3adb14) failing short test (@substack)
+
+### 0.3.7 (2013/04/04 04:07 +00:00)
+- [6c7a0ec](https://github.com/bcoe/yargs/commit/6c7a0ec94ce4199a505f0518b4d6635d4e47cc81) Fix for windows. On windows there is no _ in environment. (@hdf)
+
+### 0.3.6 (2013/04/04 04:04 +00:00)
+- [e72346a](https://github.com/bcoe/yargs/commit/e72346a727b7267af5aa008b418db89970873f05) Add support for newlines in -a="" arguments (@danielbeardsley)
+- [71e1fb5](https://github.com/bcoe/yargs/commit/71e1fb55ea9987110a669ac6ec12338cfff3821c) drop 0.4, add 0.8 to travis (@substack)
+
+### 0.3.5 (2012/10/10 11:09 +00:00)
+- [ee692b3](https://github.com/bcoe/yargs/commit/ee692b37554c70a0bb16389a50a26b66745cbbea) Fix parsing booleans (@vojtajina)
+- [5045122](https://github.com/bcoe/yargs/commit/5045122664c3f5b4805addf1be2148d5856f7ce8) set $0 properly in the tests (@substack)
+
+### 0.3.4 (2012/04/30 06:54 +00:00)
+- [f28c0e6](https://github.com/bcoe/yargs/commit/f28c0e62ca94f6e0bb2e6d82fc3d91a55e69b903) bump for string "true" params (@substack)
+- [8f44aeb](https://github.com/bcoe/yargs/commit/8f44aeb74121ddd689580e2bf74ef86a605e9bf2) Fix failing test for aliased booleans. (@coderarity)
+- [b9f7b61](https://github.com/bcoe/yargs/commit/b9f7b613b1e68e11e6c23fbda9e555a517dcc976) Add failing test for short aliased booleans. (@coderarity)
+
+### 0.3.3 (2012/04/30 06:45 +00:00)
+- [541bac8](https://github.com/bcoe/yargs/commit/541bac8dd787a5f1a5d28f6d8deb1627871705e7) Fixes #37.
+
+### 0.3.2 (2012/04/12 20:28 +00:00)
+- [3a0f014](https://github.com/bcoe/yargs/commit/3a0f014c1451280ac1c9caa1f639d31675586eec) travis badge (@substack)
+- [4fb60bf](https://github.com/bcoe/yargs/commit/4fb60bf17845f4ce3293f8ca49c9a1a7c736cfce) Fix boolean aliases. (@coderarity)
+- [f14dda5](https://github.com/bcoe/yargs/commit/f14dda546efc4fe06ace04d36919bfbb7634f79b) Adjusted package.json to use tap (@jfhbrook)
+- [88e5d32](https://github.com/bcoe/yargs/commit/88e5d32295be6e544c8d355ff84e355af38a1c74) test/usage.js no longer hangs (@jfhbrook)
+- [e1e740c](https://github.com/bcoe/yargs/commit/e1e740c27082f3ce84deca2093d9db2ef735d0e5) two tests for combined boolean/alias opts parsing (@jfhbrook)
+
+### 0.3.1 (2011/12/31 08:44 +00:00)
+- [d09b719](https://github.com/bcoe/yargs/commit/d09b71980ef711b6cf3918cd19beec8257e40e82) If "default" is set to false it was not passed on, fixed. (@wolframkriesing)
+
+### 0.3.0 (2011/12/09 06:03 +00:00)
+- [6e74aa7](https://github.com/bcoe/yargs/commit/6e74aa7b46a65773e20c0cb68d2d336d4a0d553d) bump and documented dot notation (@substack)
+
+### 0.2.7 (2011/10/20 02:25 +00:00)
+- [94adee2](https://github.com/bcoe/yargs/commit/94adee20e17b58d0836f80e8b9cdbe9813800916) argv._ can be told 'Hey! argv._! Don't be messing with my args.', and it WILL obey (@colinta)
+- [c46fdd5](https://github.com/bcoe/yargs/commit/c46fdd56a05410ae4a1e724a4820c82e77ff5469) optimistic critter image (@substack)
+- [5c95c73](https://github.com/bcoe/yargs/commit/5c95c73aedf4c7482bd423e10c545e86d7c8a125) alias options() to option() (@substack)
+- [f7692ea](https://github.com/bcoe/yargs/commit/f7692ea8da342850af819367833abb685fde41d8) [fix] Fix for parsing boolean edge case (@indexzero)
+- [d1f92d1](https://github.com/bcoe/yargs/commit/d1f92d1425bd7f356055e78621b30cdf9741a3c2)
+- [b01bda8](https://github.com/bcoe/yargs/commit/b01bda8d86e455bbf74ce497864cb8ab5b9fb847) [fix test] Update to ensure optimist is aware of default booleans. Associated tests included (@indexzero)
+- [aa753e7](https://github.com/bcoe/yargs/commit/aa753e7c54fb3a12f513769a0ff6d54aa0f63943) [dist test] Update devDependencies in package.json. Update test pathing to be more npm and require.paths future-proof (@indexzero)
+- [7bfce2f](https://github.com/bcoe/yargs/commit/7bfce2f3b3c98e6539e7549d35fbabced7e9341e) s/sys/util/ (@substack)
+- [d420a7a](https://github.com/bcoe/yargs/commit/d420a7a9c890d2cdb11acfaf3ea3f43bc3e39f41) update usage output (@substack)
+- [cf86eed](https://github.com/bcoe/yargs/commit/cf86eede2e5fc7495b6ec15e6d137d9ac814f075) some sage readme protips about parsing rules (@substack)
+- [5da9f7a](https://github.com/bcoe/yargs/commit/5da9f7a5c0e1758ec7c5801fb3e94d3f6e970513) documented all the methods finally (@substack)
+- [8ca6879](https://github.com/bcoe/yargs/commit/8ca6879311224b25933642987300f6a29de5c21b) fenced syntax highlighting (@substack)
+- [b72bacf](https://github.com/bcoe/yargs/commit/b72bacf1d02594778c1935405bc8137eb61761dc) right-alignment of wrapped extra params (@substack)
+- [2b980bf](https://github.com/bcoe/yargs/commit/2b980bf2656b4ee8fc5134dc5f56a48855c35198) now with .wrap() (@substack)
+- [d614f63](https://github.com/bcoe/yargs/commit/d614f639654057d1b7e35e3f5a306e88ec2ad1e4) don't show 'Options:' when there aren't any (@substack)
+- [691eda3](https://github.com/bcoe/yargs/commit/691eda354df97b5a86168317abcbcaabdc08a0fb) failing test for multi-aliasing (@substack)
+- [0826c9f](https://github.com/bcoe/yargs/commit/0826c9f462109feab2bc7a99346d22e72bf774b7) "Options:" > "options:" (@substack)
+- [72f7490](https://github.com/bcoe/yargs/commit/72f749025d01b7f295738ed370a669d885fbada0) [minor] Update formatting for `.showHelp()` (@indexzero)
+- [75aecce](https://github.com/bcoe/yargs/commit/75aeccea74329094072f95800e02c275e7d999aa) options works again, too lazy to write a proper test right now (@substack)
+- [f742e54](https://github.com/bcoe/yargs/commit/f742e5439817c662dc3bd8734ddd6467e6018cfd) line_count_options example, which breaks (@substack)
+- [4ca06b8](https://github.com/bcoe/yargs/commit/4ca06b8b4ea99b5d5714b315a2a8576bee6e5537) line count example (@substack)
+- [eeb8423](https://github.com/bcoe/yargs/commit/eeb8423e0a5ecc9dc3eb1e6df9f3f8c1c88f920b) remove self.argv setting in boolean (@substack)
+- [6903412](https://github.com/bcoe/yargs/commit/69034126804660af9cc20ea7f4457b50338ee3d7) removed camel case for now (@substack)
+- [5a0d88b](https://github.com/bcoe/yargs/commit/5a0d88bf23e9fa79635dd034e2a1aa992acc83cd) remove dead longest checking code (@substack)
+- [d782170](https://github.com/bcoe/yargs/commit/d782170babf7284b1aa34f5350df0dd49c373fa8) .help() too (@substack)
+- [622ec17](https://github.com/bcoe/yargs/commit/622ec17379bb5374fdbb190404c82bc600975791) rm old help generator (@substack)
+- [7c8baac](https://github.com/bcoe/yargs/commit/7c8baac4d66195e9f5158503ea9ebfb61153dab7) nub keys (@substack)
+- [8197785](https://github.com/bcoe/yargs/commit/8197785ad4762465084485b041abd722f69bf344) generate help message based on the previous calls, todo: nub (@substack)
+- [3ffbdc3](https://github.com/bcoe/yargs/commit/3ffbdc33c8f5e83d4ea2ac60575ce119570c7ede) stub out new showHelp, better checks (@substack)
+- [d4e21f5](https://github.com/bcoe/yargs/commit/d4e21f56a4830f7de841900d3c79756fb9886184) let .options() take single options too (@substack)
+- [3c4cf29](https://github.com/bcoe/yargs/commit/3c4cf2901a29bac119cca8e983028d8669230ec6) .options() is now heaps simpler (@substack)
+- [89f0d04](https://github.com/bcoe/yargs/commit/89f0d043cbccd302f10ab30c2069e05d2bf817c9) defaults work again, all tests pass (@substack)
+- [dd87333](https://github.com/bcoe/yargs/commit/dd8733365423006a6e4156372ebb55f98323af58) update test error messages, down to 2 failing tests (@substack)
+- [53f7bc6](https://github.com/bcoe/yargs/commit/53f7bc626b9875f2abdfc5dd7a80bde7f14143a3) fix for bools doubling up, passes the parse test again, others fail (@substack)
+- [2213e2d](https://github.com/bcoe/yargs/commit/2213e2ddc7263226fba717fb041dc3fde9bc2ee4) refactored for an argv getter, failing several tests (@substack)
+- [d1e7379](https://github.com/bcoe/yargs/commit/d1e737970f15c6c006bebdd8917706827ff2f0f2) just rescan for now, alias test passes (@substack)
+- [b2f8c99](https://github.com/bcoe/yargs/commit/b2f8c99cc477a8eb0fdf4cf178e1785b63185cfd) failing alias test (@substack)
+- [d0c0174](https://github.com/bcoe/yargs/commit/d0c0174daa144bfb6dc7290fdc448c393c475e15) .alias() (@substack)
+- [d85f431](https://github.com/bcoe/yargs/commit/d85f431ad7d07b058af3f2a57daa51495576c164) [api] Remove `.describe()` in favor of building upon the existing `.usage()` API (@indexzero)
+- [edbd527](https://github.com/bcoe/yargs/commit/edbd5272a8e213e71acd802782135c7f9699913a) [doc api] Add `.describe()`, `.options()`, and `.showHelp()` methods along with example. (@indexzero)
+- [be4902f](https://github.com/bcoe/yargs/commit/be4902ff0961ae8feb9093f2c0a4066463ded2cf) updates for coffee since it now does argv the node way (@substack)
+- [e24cb23](https://github.com/bcoe/yargs/commit/e24cb23798ee64e53b60815e7fda78b87f42390c) more general coffeescript detection (@substack)
+- [78ac753](https://github.com/bcoe/yargs/commit/78ac753e5d0ec32a96d39d893272afe989e42a4d) Don't trigger the CoffeeScript hack when running under node_g. (@papandreou)
+- [bcfe973](https://github.com/bcoe/yargs/commit/bcfe9731d7f90d4632281b8a52e8d76eb0195ae6) .string() but failing test (@substack)
+- [1987aca](https://github.com/bcoe/yargs/commit/1987aca28c7ba4e8796c07bbc547cb984804c826) test hex strings (@substack)
+- [ef36db3](https://github.com/bcoe/yargs/commit/ef36db32259b0b0d62448dc907c760e5554fb7e7) more keywords (@substack)
+- [cc53c56](https://github.com/bcoe/yargs/commit/cc53c56329960bed6ab077a79798e991711ba01d) Added camelCase function that converts --multi-word-option to camel case (so it becomes argv.multiWordOption). (@papandreou)
+- [60b57da](https://github.com/bcoe/yargs/commit/60b57da36797716e5783a633c6d5c79099016d45) fixed boolean bug by rescanning (@substack)
+- [dff6d07](https://github.com/bcoe/yargs/commit/dff6d078d97f8ac503c7d18dcc7b7a8c364c2883) boolean examples (@substack)
+- [0e380b9](https://github.com/bcoe/yargs/commit/0e380b92c4ef4e3c8dac1da18b5c31d85b1d02c9) boolean() with passing test (@substack)
+- [62644d4](https://github.com/bcoe/yargs/commit/62644d4bffbb8d1bbf0c2baf58a1d14a6359ef07) coffee compatibility with node regex for versions too (@substack)
+- [430fafc](https://github.com/bcoe/yargs/commit/430fafcf1683d23774772826581acff84b456827) argv._ fixed by fixing the coffee detection (@substack)
+- [343b8af](https://github.com/bcoe/yargs/commit/343b8afefd98af274ebe21b5a16b3a949ec5429f) whichNodeArgs test fails too (@substack)
+- [63df2f3](https://github.com/bcoe/yargs/commit/63df2f371f31e63d7f1dec2cbf0022a5f08da9d2) replicated mnot's bug in whichNodeEmpty test (@substack)
+- [35473a4](https://github.com/bcoe/yargs/commit/35473a4d93a45e5e7e512af8bb54ebb532997ae1) test for ./bin usage (@substack)
+- [13df151](https://github.com/bcoe/yargs/commit/13df151e44228eed10e5441c7cd163e086c458a4) don't coerce booleans to numbers (@substack)
+- [85f8007](https://github.com/bcoe/yargs/commit/85f8007e93b8be7124feea64b1f1916d8ba1894a) package bump for automatic number conversion (@substack)
+- [8f17014](https://github.com/bcoe/yargs/commit/8f170141cded4ccc0c6d67a849c5bf996aa29643) updated readme and examples with new auto-numberification goodness (@substack)
+- [73dc901](https://github.com/bcoe/yargs/commit/73dc9011ac968e39b55e19e916084a839391b506) auto number conversion works yay (@substack)
+- [bcec56b](https://github.com/bcoe/yargs/commit/bcec56b3d031e018064cbb691539ccc4f28c14ad) failing test for not-implemented auto numification (@substack)
+- [ebd2844](https://github.com/bcoe/yargs/commit/ebd2844d683feeac583df79af0e5124a7a7db04e) odd that eql doesn't check types careflly (@substack)
+- [fd854b0](https://github.com/bcoe/yargs/commit/fd854b02e512ce854b76386d395672a7969c1bc4) package author + keywords (@substack)
+- [656a1d5](https://github.com/bcoe/yargs/commit/656a1d5a1b7c0e49d72e80cb13f20671d56f76c6) updated readme with .default() stuff (@substack)
+- [cd7f8c5](https://github.com/bcoe/yargs/commit/cd7f8c55f0b82b79b690d14c5f806851236998a1) passing tests for new .default() behavior (@substack)
+- [932725e](https://github.com/bcoe/yargs/commit/932725e39ce65bc91a0385a5fab659a5fa976ac2) new default() thing for setting default key/values (@substack)
+- [4e6c7ab](https://github.com/bcoe/yargs/commit/4e6c7aba6374ac9ebc6259ecf91f13af7bce40e3) test for coffee usage (@substack)
+- [d54ffcc](https://github.com/bcoe/yargs/commit/d54ffccf2a5a905f51ed5108f7c647f35d64ae23) new --key value style with passing tests. NOTE: changes existing behavior (@substack)
+- [ed2a2d5](https://github.com/bcoe/yargs/commit/ed2a2d5d828100ebeef6385c0fb88d146a5cfe9b) package bump for summatix's coffee script fix (@substack)
+- [75a975e](https://github.com/bcoe/yargs/commit/75a975eed8430d28e2a79dc9e6d819ad545f4587) Added support for CoffeeScript (@summatix)
+- [56b2b1d](https://github.com/bcoe/yargs/commit/56b2b1de8d11f8a2b91979d8ae2d6db02d8fe64d) test coverage for the falsy check() usage (@substack)
+- [a4843a9](https://github.com/bcoe/yargs/commit/a4843a9f0e69ffb4afdf6a671d89eb6f218be35d) check bug fixed plus a handy string (@substack)
+- [857bd2d](https://github.com/bcoe/yargs/commit/857bd2db933a5aaa9cfecba0ced2dc9b415f8111) tests for demandCount, back up to 100% coverage (@substack)
+- [073b776](https://github.com/bcoe/yargs/commit/073b7768ebd781668ef05c13f9003aceca2f5c35) call demandCount from demand (@substack)
+- [4bd4b7a](https://github.com/bcoe/yargs/commit/4bd4b7a085c8b6ce1d885a0f486cc9865cee2db1) add demandCount to check for the number of arguments in the _ list (@marshall)
+- [b8689ac](https://github.com/bcoe/yargs/commit/b8689ac68dacf248119d242bba39a41cb0adfa07) Rebase checks. That will be its own module eventually. (@substack)
+- [e688370](https://github.com/bcoe/yargs/commit/e688370b576f0aa733c3f46183df69e1b561668e) a $0 like in perl (@substack)
+- [2e5e196](https://github.com/bcoe/yargs/commit/2e5e1960fc19afb21fb3293752316eaa8bcd3609) usage test hacking around process and console (@substack)
+- [fcc3521](https://github.com/bcoe/yargs/commit/fcc352163fbec6a1dfe8caf47a0df39de24fe016) description pun (@substack)
+- [87a1fe2](https://github.com/bcoe/yargs/commit/87a1fe29037ca2ca5fefda85141aaeb13e8ce761) mit/x11 license (@substack)
+- [8d089d2](https://github.com/bcoe/yargs/commit/8d089d24cd687c0bde3640a96c09b78f884900dd) bool example is more consistent and also shows off short option grouping (@substack)
+- [448d747](https://github.com/bcoe/yargs/commit/448d7473ac68e8e03d8befc9457b0d9e21725be0) start of the readme and examples (@substack)
+- [da74dea](https://github.com/bcoe/yargs/commit/da74dea799a9b59dbf022cbb8001bfdb0d52eec9) more tests for long and short captures (@substack)
+- [ab6387e](https://github.com/bcoe/yargs/commit/ab6387e6769ca4af82ca94c4c67c7319f0d9fcfa) silly bug in the tests with s/not/no/, all tests pass now (@substack)
+- [102496a](https://github.com/bcoe/yargs/commit/102496a319e8e06f6550d828fc2f72992c7d9ecc) hack an instance for process.argv onto Argv so the export can be called to create an instance or used for argv, which is the most common case (@substack)
+- [a01caeb](https://github.com/bcoe/yargs/commit/a01caeb532546d19f68f2b2b87f7036cfe1aaedd) divide example (@substack)
+- [443da55](https://github.com/bcoe/yargs/commit/443da55736acbaf8ff8b04d1b9ce19ab016ddda2) start of the lib with a package.json (@substack)
diff --git a/node_modules/uglify-js/node_modules/yargs/LICENSE b/node_modules/uglify-js/node_modules/yargs/LICENSE
new file mode 100644
index 000000000..432d1aeb0
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/LICENSE
@@ -0,0 +1,21 @@
+Copyright 2010 James Halliday (mail@substack.net)
+
+This project is free software released under the MIT/X11 license:
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/node_modules/uglify-js/node_modules/yargs/README.md b/node_modules/uglify-js/node_modules/yargs/README.md
new file mode 100644
index 000000000..99086e6e9
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/README.md
@@ -0,0 +1,926 @@
+yargs
+========
+
+Yargs be a node.js library fer hearties tryin' ter parse optstrings.
+
+With yargs, ye be havin' a map that leads straight to yer treasure! Treasure of course, being a simple option hash.
+
+[![Build Status](https://travis-ci.org/bcoe/yargs.png)](https://travis-ci.org/bcoe/yargs)
+[![Dependency Status](https://gemnasium.com/bcoe/yargs.png)](https://gemnasium.com/bcoe/yargs)
+[![Coverage Status](https://coveralls.io/repos/bcoe/yargs/badge.svg?branch=)](https://coveralls.io/r/bcoe/yargs?branch=)
+[![NPM version](https://img.shields.io/npm/v/yargs.svg)](https://www.npmjs.com/package/yargs)
+
+> Yargs is the official successor to optimist. Please feel free to submit issues and pull requests. If you'd like to contribute and don't know where to start, have a look at [the issue list](https://github.com/bcoe/yargs/issues) :)
+
+examples
+========
+
+With yargs, the options be just a hash!
+-------------------------------------------------------------------
+
+plunder.js:
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs').argv;
+
+if (argv.ships > 3 && argv.distance < 53.5) {
+    console.log('Plunder more riffiwobbles!');
+}
+else {
+    console.log('Retreat from the xupptumblers!');
+}
+````
+
+***
+
+    $ ./plunder.js --ships=4 --distance=22
+    Plunder more riffiwobbles!
+
+    $ ./plunder.js --ships 12 --distance 98.7
+    Retreat from the xupptumblers!
+
+![Joe was one optimistic pirate.](http://i.imgur.com/4WFGVJ9.png)
+
+But don't walk the plank just yet! There be more! You can do short options:
+-------------------------------------------------
+
+short.js:
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs').argv;
+console.log('(%d,%d)', argv.x, argv.y);
+````
+
+***
+
+    $ ./short.js -x 10 -y 21
+    (10,21)
+
+And booleans, both long, short, and even grouped:
+----------------------------------
+
+bool.js:
+
+````javascript
+#!/usr/bin/env node
+var util = require('util');
+var argv = require('yargs').argv;
+
+if (argv.s) {
+    util.print(argv.fr ? 'Le perroquet dit: ' : 'The parrot says: ');
+}
+console.log(
+    (argv.fr ? 'couac' : 'squawk') + (argv.p ? '!' : '')
+);
+````
+
+***
+
+    $ ./bool.js -s
+    The parrot says: squawk
+
+    $ ./bool.js -sp
+    The parrot says: squawk!
+
+    $ ./bool.js -sp --fr
+    Le perroquet dit: couac!
+
+And non-hyphenated options too! Just use `argv._`!
+-------------------------------------------------
+
+nonopt.js:
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs').argv;
+console.log('(%d,%d)', argv.x, argv.y);
+console.log(argv._);
+````
+
+***
+
+    $ ./nonopt.js -x 6.82 -y 3.35 rum
+    (6.82,3.35)
+    [ 'rum' ]
+
+    $ ./nonopt.js "me hearties" -x 0.54 yo -y 1.12 ho
+    (0.54,1.12)
+    [ 'me hearties', 'yo', 'ho' ]
+
+Yargs even counts your booleans!
+----------------------------------------------------------------------
+
+count.js
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .count('verbose')
+    .alias('v', 'verbose')
+    .argv;
+
+VERBOSE_LEVEL = argv.verbose;
+
+function WARN()  { VERBOSE_LEVEL >= 0 && console.log.apply(console, arguments); }
+function INFO()  { VERBOSE_LEVEL >= 1 && console.log.apply(console, arguments); }
+function DEBUG() { VERBOSE_LEVEL >= 2 && console.log.apply(console, arguments); }
+
+WARN("Showing only important stuff");
+INFO("Showing semi-mportant stuff too");
+DEBUG("Extra chatty mode");
+````
+
+***
+    $ node count.js
+    Showing only important stuff
+
+    $ node count.js -v
+    Showing only important stuff
+    Showing semi-important stuff too
+
+    $ node count.js -vv
+    Showing only important stuff
+    Showing semi-important stuff too
+    Extra chatty mode
+
+    $ node count.js -v --verbose
+    Showing only important stuff
+    Showing semi-important stuff too
+    Extra chatty mode
+
+Tell users how to use yer options and make demands.
+-------------------------------------------------
+
+area.js:
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .usage('Usage: $0 -w [num] -yh[num]')
+    .demand(['w','h'])
+    .argv;
+
+console.log("The area is:", argv.w * argv.h);
+````
+
+***
+
+    $ ./area.js -w 55 -h 11
+    605
+
+    $ node ./area.js -w 4.91 -w 2.51
+    Usage: node ./area.js -w [num] -h [num]
+
+    Options:
+      -w  [required]
+      -h  [required]
+
+    Missing required arguments: h
+
+After yer demands have been met, demand more! Ask for non-hypenated arguments!
+-----------------------------------------
+
+demand_count.js:
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .demand(2)
+    .argv;
+console.dir(argv)
+````
+
+***
+
+	$ ./demand_count.js a
+	Not enough arguments, expected 2, but only found 1
+	$ ./demand_count.js a b
+	{ _: [ 'a', 'b' ], '$0': 'node ./demand_count.js' }
+	$ ./demand_count.js a b c
+	{ _: [ 'a', 'b', 'c' ], '$0': 'node ./demand_count.js' }
+
+EVEN MORE SHIVER ME TIMBERS!
+------------------
+
+default_singles.js:
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .default('x', 10)
+    .default('y', 10)
+    .argv
+;
+console.log(argv.x + argv.y);
+````
+
+***
+
+    $ ./default_singles.js -x 5
+    15
+
+default_hash.js:
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .default({ x : 10, y : 10 })
+    .argv
+;
+console.log(argv.x + argv.y);
+````
+
+***
+
+    $ ./default_hash.js -y 7
+    17
+
+And if you really want to get all descriptive about it...
+---------------------------------------------------------
+
+boolean_single.js
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .boolean('v')
+    .argv
+;
+console.dir(argv.v);
+console.dir(argv._);
+````
+
+***
+
+    $ ./boolean_single.js -v "me hearties" yo ho
+    true
+    [ 'me hearties', 'yo', 'ho' ]
+
+
+boolean_double.js
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .boolean(['x','y','z'])
+    .argv
+;
+console.dir([ argv.x, argv.y, argv.z ]);
+console.dir(argv._);
+````
+
+***
+
+    $ ./boolean_double.js -x -z one two three
+    [ true, false, true ]
+    [ 'one', 'two', 'three' ]
+
+Yargs is here to help you...
+---------------------------
+
+Ye can describe parameters fer help messages and set aliases. Yargs figures
+out how ter format a handy help string automatically.
+
+line_count.js
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .usage('Usage: $0 <command> [options]')
+    .command('count', 'Count the lines in a file')
+    .demand(1)
+    .example('$0 count -f foo.js', 'count the lines in the given file')
+    .demand('f')
+    .alias('f', 'file')
+    .nargs('f', 1)
+    .describe('f', 'Load a file')
+    .help('h')
+    .alias('h', 'help')
+    .epilog('copyright 2015')
+    .argv;
+
+var fs = require('fs');
+var s = fs.createReadStream(argv.file);
+
+var lines = 0;
+s.on('data', function (buf) {
+    lines += buf.toString().match(/\n/g).length;
+});
+
+s.on('end', function () {
+    console.log(lines);
+});
+````
+
+***
+    $ node line_count.js count
+    Usage: node test.js <command> [options]
+
+    Commands:
+      count    Count the lines in a file
+
+    Options:
+      -f, --file  Load a file        [required]
+      -h, --help  Show help
+
+    Examples:
+      node test.js count -f foo.js    count the lines in the given file
+
+    copyright 2015
+
+    Missing required arguments: f
+
+    $ node line_count.js count --file line_count.js
+    20
+
+    $ node line_count.js count -f line_count.js
+    20
+
+methods
+=======
+
+By itself,
+
+````javascript
+require('yargs').argv
+`````
+
+will use `process.argv` array to construct the `argv` object.
+
+You can pass in the `process.argv` yourself:
+
+````javascript
+require('yargs')([ '-x', '1', '-y', '2' ]).argv
+````
+
+or use .parse() to do the same thing:
+
+````javascript
+require('yargs').parse([ '-x', '1', '-y', '2' ])
+````
+
+The rest of these methods below come in just before the terminating `.argv`.
+
+.alias(key, alias)
+------------------
+
+Set key names as equivalent such that updates to a key will propagate to aliases
+and vice-versa.
+
+Optionally `.alias()` can take an object that maps keys to aliases.
+Each key of this object should be the canonical version of the option, and each
+value should be a string or an array of strings.
+
+.default(key, value, [description])
+--------------------
+
+Set `argv[key]` to `value` if no option was specified on `process.argv`.
+
+Optionally `.default()` can take an object that maps keys to default values.
+
+But wait, there's more! the default value can be a `function` which returns
+a value. The name of the function will be used in the usage string:
+
+```js
+var argv = require('yargs')
+  .default('random', function randomValue() {
+    return Math.random() * 256;
+  }).argv;
+```
+
+Optionally, `description` can also be provided and will take precedence over
+displaying the value in the usage instructions:
+
+```js
+.default('timeout', 60000, '(one-minute)');
+```
+
+.demand(key, [msg | boolean])
+-----------------------------
+.require(key, [msg | boolean])
+------------------------------
+.required(key, [msg | boolean])
+-------------------------------
+
+If `key` is a string, show the usage information and exit if `key` wasn't
+specified in `process.argv`.
+
+If `key` is a number, demand at least as many non-option arguments, which show
+up in `argv._`.
+
+If `key` is an Array, demand each element.
+
+If a `msg` string is given, it will be printed when the argument is missing,
+instead of the standard error message. This is especially helpful for the non-option arguments in `argv._`.
+
+If a `boolean` value is given, it controls whether the option is demanded;
+this is useful when using `.options()` to specify command line parameters.
+
+.requiresArg(key)
+-----------------
+
+Specifies either a single option key (string), or an array of options that
+must be followed by option values. If any option value is missing, show the
+usage information and exit.
+
+The default behaviour is to set the value of any key not followed by an
+option value to `true`.
+
+.implies(x, y)
+--------------
+
+Given the key `x` is set, it is required that the key `y` is set.
+
+implies can also accept an object specifying multiple implications.
+
+.describe(key, desc)
+--------------------
+
+Describe a `key` for the generated usage information.
+
+Optionally `.describe()` can take an object that maps keys to descriptions.
+
+.option(key, opt)
+-----------------
+.options(key, opt)
+------------------
+
+Instead of chaining together `.alias().demand().default().describe().string()`, you can specify
+keys in `opt` for each of the chainable methods.
+
+For example:
+
+````javascript
+var argv = require('yargs')
+    .option('f', {
+        alias : 'file',
+        demand: true,
+        default: '/etc/passwd',
+        describe: 'x marks the spot',
+        type: 'string'
+    })
+    .argv
+;
+````
+
+is the same as
+
+````javascript
+var argv = require('yargs')
+    .alias('f', 'file')
+    .default('f', '/etc/passwd')
+    .argv
+;
+````
+
+Optionally `.options()` can take an object that maps keys to `opt` parameters.
+
+````javascript
+var argv = require('yargs')
+    .options({
+      'f': {
+        alias: 'file',
+        demand: true,
+        default: '/etc/passwd',
+        describe: 'x marks the spot',
+        type: 'string'
+      }
+    })
+    .argv
+;
+````
+
+.usage(message, opts)
+---------------------
+
+Set a usage message to show which commands to use. Inside `message`, the string
+`$0` will get interpolated to the current script name or node command for the
+present script similar to how `$0` works in bash or perl.
+
+`opts` is optional and acts like calling `.options(opts)`.
+
+.command(cmd, desc, [fn])
+-------------------
+
+Document the commands exposed by your application.
+
+use `desc` to provide a description for each command your application accepts (the
+values stored in `argv._`).
+
+Optionally, you can provide a handler `fn` which will be executed when
+a given command is provided. The handler will be executed with an instance
+of `yargs`, which can be used to compose nested commands.
+
+Here's an example of top-level and nested commands in action:
+
+```js
+var argv = require('yargs')
+  .usage('npm <command>')
+  .command('install', 'tis a mighty fine package to install')
+  .command('publish', 'shiver me timbers, should you be sharing all that', function (yargs) {
+    argv = yargs.option('f', {
+      alias: 'force',
+      description: 'yar, it usually be a bad idea'
+    })
+    .help('help')
+    .argv
+  })
+  .help('help')
+  .argv;
+```
+
+.example(cmd, desc)
+-------------------
+
+Give some example invocations of your program. Inside `cmd`, the string
+`$0` will get interpolated to the current script name or node command for the
+present script similar to how `$0` works in bash or perl.
+Examples will be printed out as part of the help message.
+
+
+.epilogue(str)
+--------------
+.epilog(str)
+------------
+
+A message to print at the end of the usage instructions, e.g.,
+
+```js
+var argv = require('yargs')
+  .epilogue('for more information, find our manual at http://example.com');
+```
+
+.check(fn)
+----------
+
+Check that certain conditions are met in the provided arguments.
+
+`fn` is called with two arguments, the parsed `argv` hash and an array of options and their aliases.
+
+If `fn` throws or returns a non-truthy value, show the thrown error, usage information, and
+exit.
+
+.fail(fn)
+---------
+
+Method to execute when a failure occurs, rather then printing the failure message.
+
+`fn` is called with the failure message that would have been printed.
+
+.boolean(key)
+-------------
+
+Interpret `key` as a boolean. If a non-flag option follows `key` in
+`process.argv`, that string won't get set as the value of `key`.
+
+`key` will default to `false`, unless an `default(key, undefined)` is
+explicitly set.
+
+If `key` is an Array, interpret all the elements as booleans.
+
+.string(key)
+------------
+
+Tell the parser logic not to interpret `key` as a number or boolean.
+This can be useful if you need to preserve leading zeros in an input.
+
+If `key` is an Array, interpret all the elements as strings.
+
+`.string('_')` will result in non-hyphenated arguments being interpreted as strings,
+regardless of whether they resemble numbers.
+
+.array(key)
+----------
+
+Tell the parser to interpret `key` as an array. If `.array('foo')` is set,
+`--foo foo bar` will be parsed as `['foo', 'bar']` rather than as `'bar'`.
+
+.nargs(key, count)
+-----------
+
+The number of arguments that should be consumed after a key. This can be a
+useful hint to prevent parsing ambiguity:
+
+```js
+var argv = require('yargs')
+  .nargs('token', 1)
+  .parse(['--token', '-my-token']);
+```
+
+parses as:
+
+`{ _: [], token: '-my-token', '$0': 'node test' }`
+
+Optionally `.nargs()` can take an object of `key`/`narg` pairs.
+
+.config(key)
+------------
+
+Tells the parser that if the option specified by `key` is passed in, it
+should be interpreted as a path to a JSON config file. The file is loaded
+and parsed, and its properties are set as arguments.
+
+.wrap(columns)
+--------------
+
+Format usage output to wrap at `columns` many columns.
+
+By default wrap will be set to `Math.min(80, windowWidth)`. Use `.wrap(null)` to
+specify no column limit.
+
+`yargs.wrap(yargs.terminalWidth())` can be used to maximize the width
+of yargs' usage instructions.
+
+.strict()
+---------
+
+Any command-line argument given that is not demanded, or does not have a
+corresponding description, will be reported as an error.
+
+.help([option, [description]])
+------------------------------
+
+Add an option (e.g., `--help`) that displays the usage string and exits the
+process. If present, the `description` parameter customises the description of
+the help option in the usage string.
+
+If invoked without parameters, `.help` returns the generated usage string.
+
+Example:
+
+```
+var yargs = require("yargs")
+       .usage("$0 -operand1 number -operand2 number -operation [add|subtract]");
+console.log(yargs.help());
+```
+
+Later on, ```argv``` can be retrived with ```yargs.argv```
+
+.version(version, [option], [description])
+----------------------------------------
+
+Add an option (e.g., `--version`) that displays the version number (given by the
+`version` parameter) and exits the process. If present, the `description`
+parameter customizes the description of the version option in the usage string.
+
+You can provide a `function` for version, rather than a string.
+This is useful if you want to use the version from your package.json:
+
+```js
+var argv = require('yargs')
+  .version(function() {
+    return require('../package').version;
+  })
+  .argv;
+```
+
+.showHelpOnFail(enable, [message])
+----------------------------------
+
+By default, yargs outputs a usage string if any error is detected. Use the
+`.showHelpOnFail` method to customize this behaviour. if `enable` is `false`,
+the usage string is not output. If the `message` parameter is present, this
+message is output after the error message.
+
+line_count.js
+
+````javascript
+#!/usr/bin/env node
+var argv = require('yargs')
+    .usage('Count the lines in a file.\nUsage: $0')
+    .demand('f')
+    .alias('f', 'file')
+    .describe('f', 'Load a file')
+    .showHelpOnFail(false, "Specify --help for available options")
+    .argv;
+
+// etc.
+````
+
+***
+
+    $ node line_count.js --file
+    Missing argument value: f
+
+    Specify --help for available options
+
+.showHelp(consoleLevel='error')
+---------------------------
+
+Print the usage data using the [`console`](https://nodejs.org/api/console.html) function `consoleLevel` for printing.
+
+Example:
+
+```
+var yargs = require("yargs")
+       .usage("$0 -operand1 number -operand2 number -operation [add|subtract]");
+yargs.showHelp();
+```
+
+Or, to print the usage data to `stdout` instead, you can specify the use of `console.log`:
+
+```
+yargs.showHelp("log");
+```
+
+Later on, ```argv``` can be retrived with ```yargs.argv```
+
+.completion(cmd, [description], [fn]);
+-------------
+
+Enable bash-completion shortcuts for commands and options.
+
+`cmd`: when present in `argv._`, will result in the `.bashrc` completion script
+being outputted. To enable bash completions, concat the generated script to your
+`.bashrc`, or `.bash_profile`.
+
+`description`: provide a description in your usage instructions for the command
+that generates bash completion scripts.
+
+`fn`, rather than relying on yargs' default completion functionlity, which
+shiver me timbers is pretty awesome, you can provide your own completion
+method.
+
+```js
+var argv = require('yargs')
+  .completion('completion', function(current, argv) {
+    // 'current' is the current command being completed.
+    // 'argv' is the parsed arguments so far.
+    // simply return an array of completions.
+    return [
+      'foo',
+      'bar'
+    ];
+  })
+  .argv;
+```
+
+But wait, there's more! you can provide asynchronous completions.
+
+```js
+var argv = require('yargs')
+  .completion('completion', function(current, argv, done) {
+    setTimeout(function() {
+      done([
+        'apple',
+        'banana'
+      ]);
+    }, 500);
+  })
+  .argv;
+```
+
+.showCompletionScript()
+----------------------
+
+Generate a bash completion script. Users of your application can install this
+script in their `.bashrc`, and yargs will provide completion shortcuts for
+commands and options.
+
+.exitProcess(enable)
+----------------------------------
+
+By default, yargs exits the process when the user passes a help flag, uses the `.version` functionality or when validation fails. Calling `.exitProcess(false)` disables this behavior, enabling further actions after yargs have been validated.
+
+.parse(args)
+------------
+
+Parse `args` instead of `process.argv`. Returns the `argv` object.
+
+.reset()
+--------
+
+Reset the argument object built up so far. This is useful for
+creating nested command line interfaces.
+
+```js
+var yargs = require('./yargs')
+  .usage('$0 command')
+  .command('hello', 'hello command')
+  .command('world', 'world command')
+  .demand(1, 'must provide a valid command'),
+  argv = yargs.argv,
+  command = argv._[0];
+
+if (command === 'hello') {
+  yargs.reset()
+    .usage('$0 hello')
+    .help('h')
+    .example('$0 hello', 'print the hello message!')
+    .argv
+
+  console.log('hello!');
+} else if (command === 'world'){
+  yargs.reset()
+    .usage('$0 world')
+    .help('h')
+    .example('$0 world', 'print the world message!')
+    .argv
+
+  console.log('world!');
+} else {
+  yargs.showHelp();
+}
+```
+
+.argv
+-----
+
+Get the arguments as a plain old object.
+
+Arguments without a corresponding flag show up in the `argv._` array.
+
+The script name or node command is available at `argv.$0` similarly to how `$0`
+works in bash or perl.
+
+parsing tricks
+==============
+
+stop parsing
+------------
+
+Use `--` to stop parsing flags and stuff the remainder into `argv._`.
+
+    $ node examples/reflect.js -a 1 -b 2 -- -c 3 -d 4
+    { _: [ '-c', '3', '-d', '4' ],
+      '$0': 'node ./examples/reflect.js',
+      a: 1,
+      b: 2 }
+
+negate fields
+-------------
+
+If you want to explicity set a field to false instead of just leaving it
+undefined or to override a default you can do `--no-key`.
+
+    $ node examples/reflect.js -a --no-b
+    { _: [],
+      '$0': 'node ./examples/reflect.js',
+      a: true,
+      b: false }
+
+numbers
+-------
+
+Every argument that looks like a number (`!isNaN(Number(arg))`) is converted to
+one. This way you can just `net.createConnection(argv.port)` and you can add
+numbers out of `argv` with `+` without having that mean concatenation,
+which is super frustrating.
+
+duplicates
+----------
+
+If you specify a flag multiple times it will get turned into an array containing
+all the values in order.
+
+    $ node examples/reflect.js -x 5 -x 8 -x 0
+    { _: [],
+      '$0': 'node ./examples/reflect.js',
+        x: [ 5, 8, 0 ] }
+
+dot notation
+------------
+
+When you use dots (`.`s) in argument names, an implicit object path is assumed.
+This lets you organize arguments into nested objects.
+
+     $ node examples/reflect.js --foo.bar.baz=33 --foo.quux=5
+     { _: [],
+       '$0': 'node ./examples/reflect.js',
+         foo: { bar: { baz: 33 }, quux: 5 } }
+
+short numbers
+-------------
+
+Short numeric `head -n5` style argument work too:
+
+    $ node reflect.js -n123 -m456
+    { '3': true,
+      '6': true,
+      _: [],
+      '$0': 'node ./reflect.js',
+      n: 123,
+      m: 456 }
+
+installation
+============
+
+With [npm](http://github.com/isaacs/npm), just do:
+
+    npm install yargs
+
+or clone this project on github:
+
+    git clone http://github.com/bcoe/yargs.git
+
+To run the tests with npm, just do:
+
+    npm test
+
+inspired by
+===========
+
+This module is loosely inspired by Perl's
+[Getopt::Casual](http://search.cpan.org/~photo/Getopt-Casual-0.13.1/Casual.pm).
diff --git a/node_modules/uglify-js/node_modules/yargs/completion.sh.hbs b/node_modules/uglify-js/node_modules/yargs/completion.sh.hbs
new file mode 100644
index 000000000..c52e49914
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/completion.sh.hbs
@@ -0,0 +1,22 @@
+###-begin-{{app_name}}-completions-###
+#
+# yargs command completion script
+#
+# Installation: {{app_path}} completion >> ~/.bashrc
+#    or {{app_path}} completion >> ~/.bash_profile on OSX.
+#
+_yargs_completions()
+{
+    local cur_word args type_list
+
+    cur_word="${COMP_WORDS[COMP_CWORD]}"
+    args=$(printf "%s " "${COMP_WORDS[@]}")
+
+    # ask yargs to generate completions.
+    type_list=`{{app_path}} --get-yargs-completions $args`
+
+    COMPREPLY=( $(compgen -W "${type_list}" -- ${cur_word}) )
+    return 0
+}
+complete -F _yargs_completions {{app_name}}
+###-end-{{app_name}}-completions-###
diff --git a/node_modules/uglify-js/node_modules/yargs/index.js b/node_modules/uglify-js/node_modules/yargs/index.js
new file mode 100644
index 000000000..96539b08d
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/index.js
@@ -0,0 +1,504 @@
+var assert = require('assert'),
+  path = require('path'),
+  Completion = require('./lib/completion'),
+  Parser = require('./lib/parser'),
+  Usage = require('./lib/usage'),
+  Validation = require('./lib/validation')
+
+Argv(process.argv.slice(2))
+
+var exports = module.exports = Argv
+function Argv (processArgs, cwd) {
+  processArgs = processArgs || [] // handle calling yargs().
+
+  var self = {}
+  var completion = null
+  var usage = null
+  var validation = null
+
+  if (!cwd) cwd = process.cwd()
+
+  self.$0 = process.argv
+    .slice(0, 2)
+    .map(function (x, i) {
+      // ignore the node bin, specify this in your
+      // bin file with #!/usr/bin/env node
+      if (i === 0 && /\b(node|iojs)$/.test(x)) return
+      var b = rebase(cwd, x)
+      return x.match(/^\//) && b.length < x.length
+      ? b : x
+    })
+    .join(' ').trim()
+
+  if (process.env._ !== undefined && process.argv[1] === process.env._) {
+    self.$0 = process.env._.replace(
+      path.dirname(process.execPath) + '/', ''
+    )
+  }
+
+  var options
+  self.resetOptions = self.reset = function () {
+    // put yargs back into its initial
+    // state, this is useful for creating a
+    // nested CLI.
+    options = {
+      array: [],
+      boolean: [],
+      string: [],
+      narg: {},
+      key: {},
+      alias: {},
+      default: {},
+      defaultDescription: {},
+      requiresArg: [],
+      count: [],
+      normalize: [],
+      config: []
+    }
+
+    usage = Usage(self) // handle usage output.
+    validation = Validation(self, usage) // handle arg validation.
+    completion = Completion(self, usage)
+
+    demanded = {}
+
+    exitProcess = true
+    strict = false
+    helpOpt = null
+    versionOpt = null
+    completionOpt = null
+    commandHandlers = {}
+    self.parsed = false
+
+    return self
+  }
+  self.resetOptions()
+
+  self.boolean = function (bools) {
+    options.boolean.push.apply(options.boolean, [].concat(bools))
+    return self
+  }
+
+  self.array = function (arrays) {
+    options.array.push.apply(options.array, [].concat(arrays))
+    return self
+  }
+
+  self.nargs = function (key, n) {
+    if (typeof key === 'object') {
+      Object.keys(key).forEach(function (k) {
+        self.nargs(k, key[k])
+      })
+    } else {
+      options.narg[key] = n
+    }
+    return self
+  }
+
+  self.normalize = function (strings) {
+    options.normalize.push.apply(options.normalize, [].concat(strings))
+    return self
+  }
+
+  self.config = function (configs) {
+    options.config.push.apply(options.config, [].concat(configs))
+    return self
+  }
+
+  self.example = function (cmd, description) {
+    usage.example(cmd, description)
+    return self
+  }
+
+  self.command = function (cmd, description, fn) {
+    usage.command(cmd, description)
+    if (fn) commandHandlers[cmd] = fn
+    return self
+  }
+
+  var commandHandlers = {}
+  self.getCommandHandlers = function () {
+    return commandHandlers
+  }
+
+  self.string = function (strings) {
+    options.string.push.apply(options.string, [].concat(strings))
+    return self
+  }
+
+  self.default = function (key, value, defaultDescription) {
+    if (typeof key === 'object') {
+      Object.keys(key).forEach(function (k) {
+        self.default(k, key[k])
+      })
+    } else {
+      if (typeof value === 'function') {
+        defaultDescription = usage.functionDescription(value, defaultDescription)
+        value = value.call()
+      }
+      options.defaultDescription[key] = defaultDescription
+      options.default[key] = value
+    }
+    return self
+  }
+
+  self.alias = function (x, y) {
+    if (typeof x === 'object') {
+      Object.keys(x).forEach(function (key) {
+        self.alias(key, x[key])
+      })
+    } else {
+      options.alias[x] = (options.alias[x] || []).concat(y)
+    }
+    return self
+  }
+
+  self.count = function (counts) {
+    options.count.push.apply(options.count, [].concat(counts))
+    return self
+  }
+
+  var demanded = {}
+  self.demand = self.required = self.require = function (keys, msg) {
+    if (typeof keys === 'number') {
+      if (!demanded._) demanded._ = { count: 0, msg: null }
+      demanded._.count += keys
+      demanded._.msg = msg
+    } else if (Array.isArray(keys)) {
+      keys.forEach(function (key) {
+        self.demand(key, msg)
+      })
+    } else {
+      if (typeof msg === 'string') {
+        demanded[keys] = { msg: msg }
+      } else if (msg === true || typeof msg === 'undefined') {
+        demanded[keys] = { msg: undefined }
+      }
+    }
+
+    return self
+  }
+  self.getDemanded = function () {
+    return demanded
+  }
+
+  self.requiresArg = function (requiresArgs) {
+    options.requiresArg.push.apply(options.requiresArg, [].concat(requiresArgs))
+    return self
+  }
+
+  self.implies = function (key, value) {
+    validation.implies(key, value)
+    return self
+  }
+
+  self.usage = function (msg, opts) {
+    if (!opts && typeof msg === 'object') {
+      opts = msg
+      msg = null
+    }
+
+    usage.usage(msg)
+
+    if (opts) self.options(opts)
+
+    return self
+  }
+
+  self.epilogue = self.epilog = function (msg) {
+    usage.epilog(msg)
+    return self
+  }
+
+  self.fail = function (f) {
+    usage.failFn(f)
+    return self
+  }
+
+  self.check = function (f) {
+    validation.check(f)
+    return self
+  }
+
+  self.defaults = self.default
+
+  self.describe = function (key, desc) {
+    options.key[key] = true
+    usage.describe(key, desc)
+    return self
+  }
+
+  self.parse = function (args) {
+    return parseArgs(args)
+  }
+
+  self.option = self.options = function (key, opt) {
+    if (typeof key === 'object') {
+      Object.keys(key).forEach(function (k) {
+        self.options(k, key[k])
+      })
+    } else {
+      assert(typeof opt === 'object', 'second argument to option must be an object')
+
+      options.key[key] = true // track manually set keys.
+
+      if (opt.alias) self.alias(key, opt.alias)
+
+      var demand = opt.demand || opt.required || opt.require
+
+      if (demand) {
+        self.demand(key, demand)
+      } if ('default' in opt) {
+        self.default(key, opt.default)
+      } if ('nargs' in opt) {
+        self.nargs(key, opt.nargs)
+      } if (opt.boolean || opt.type === 'boolean') {
+        self.boolean(key)
+        if (opt.alias) self.boolean(opt.alias)
+      } if (opt.array || opt.type === 'array') {
+        self.array(key)
+        if (opt.alias) self.array(opt.alias)
+      } if (opt.string || opt.type === 'string') {
+        self.string(key)
+        if (opt.alias) self.string(opt.alias)
+      } if (opt.count || opt.type === 'count') {
+        self.count(key)
+      }
+
+      var desc = opt.describe || opt.description || opt.desc
+      if (desc) {
+        self.describe(key, desc)
+      }
+
+      if (opt.requiresArg) {
+        self.requiresArg(key)
+      }
+    }
+
+    return self
+  }
+  self.getOptions = function () {
+    return options
+  }
+
+  self.wrap = function (cols) {
+    usage.wrap(cols)
+    return self
+  }
+
+  var strict = false
+  self.strict = function () {
+    strict = true
+    return self
+  }
+  self.getStrict = function () {
+    return strict
+  }
+
+  self.showHelp = function (level) {
+    if (!self.parsed) parseArgs(processArgs) // run parser, if it has not already been executed.
+    usage.showHelp(level)
+    return self
+  }
+
+  var versionOpt = null
+  self.version = function (ver, opt, msg) {
+    versionOpt = opt || 'version'
+    usage.version(ver)
+    self.boolean(versionOpt)
+    self.describe(versionOpt, msg || 'Show version number')
+    return self
+  }
+
+  var helpOpt = null
+  self.addHelpOpt = function (opt, msg) {
+    helpOpt = opt
+    self.boolean(opt)
+    self.describe(opt, msg || 'Show help')
+    return self
+  }
+
+  self.showHelpOnFail = function (enabled, message) {
+    usage.showHelpOnFail(enabled, message)
+    return self
+  }
+
+  var exitProcess = true
+  self.exitProcess = function (enabled) {
+    if (typeof enabled !== 'boolean') {
+      enabled = true
+    }
+    exitProcess = enabled
+    return self
+  }
+  self.getExitProcess = function () {
+    return exitProcess
+  }
+
+  self.help = function () {
+    if (arguments.length > 0) return self.addHelpOpt.apply(self, arguments)
+
+    if (!self.parsed) parseArgs(processArgs) // run parser, if it has not already been executed.
+
+    return usage.help()
+  }
+
+  var completionOpt = null,
+  completionCommand = null
+  self.completion = function (cmd, desc, fn) {
+    // a function to execute when generating
+    // completions can be provided as the second
+    // or third argument to completion.
+    if (typeof desc === 'function') {
+      fn = desc
+      desc = null
+    }
+
+    // register the completion command.
+    completionCommand = cmd
+    completionOpt = completion.completionKey
+    self.command(completionCommand, desc || 'generate bash completion script')
+
+    // a function can be provided
+    if (fn) completion.registerFunction(fn)
+
+    return self
+  }
+
+  self.showCompletionScript = function ($0) {
+    $0 = $0 || self.$0
+    console.log(completion.generateCompletionScript($0))
+    return self
+  }
+
+  self.getUsageInstance = function () {
+    return usage
+  }
+
+  self.getValidationInstance = function () {
+    return validation
+  }
+
+  self.terminalWidth = function () {
+    return require('window-size').width
+  }
+
+  Object.defineProperty(self, 'argv', {
+    get: function () {
+      var args = null
+
+      try {
+        args = parseArgs(processArgs)
+      } catch (err) {
+        usage.fail(err.message)
+      }
+
+      return args
+    },
+    enumerable: true
+  })
+
+  function parseArgs (args) {
+    var parsed = Parser(args, options),
+      argv = parsed.argv,
+      aliases = parsed.aliases
+
+    argv.$0 = self.$0
+
+    self.parsed = parsed
+
+    // generate a completion script for adding to ~/.bashrc.
+    if (completionCommand && ~argv._.indexOf(completionCommand)) {
+      self.showCompletionScript()
+      if (exitProcess) {
+        process.exit(0)
+      }
+    }
+
+    // if there's a handler associated with a
+    // command defer processing to it.
+    var handlerKeys = Object.keys(self.getCommandHandlers())
+    for (var i = 0, command; (command = handlerKeys[i]) !== undefined; i++) {
+      if (~argv._.indexOf(command)) {
+        self.getCommandHandlers()[command](self.reset())
+        return self.argv
+      }
+    }
+
+    Object.keys(argv).forEach(function (key) {
+      if (key === helpOpt && argv[key]) {
+        self.showHelp('log')
+        if (exitProcess) {
+          process.exit(0)
+        }
+      } else if (key === versionOpt && argv[key]) {
+        usage.showVersion()
+        if (exitProcess) {
+          process.exit(0)
+        }
+      } else if (key === completionOpt) {
+        // we allow for asynchronous completions,
+        // e.g., loading in a list of commands from an API.
+        completion.getCompletion(function (completions) {
+          ;(completions || []).forEach(function (completion) {
+            console.log(completion)
+          })
+
+          if (exitProcess) {
+            process.exit(0)
+          }
+        })
+        return
+      }
+    })
+
+    validation.nonOptionCount(argv)
+    validation.missingArgumentValue(argv)
+    validation.requiredArguments(argv)
+
+    if (strict) {
+      validation.unknownArguments(argv, aliases)
+    }
+
+    validation.customChecks(argv, aliases)
+    validation.implications(argv)
+    setPlaceholderKeys(argv)
+
+    return argv
+  }
+
+  function setPlaceholderKeys (argv) {
+    Object.keys(options.key).forEach(function (key) {
+      if (typeof argv[key] === 'undefined') argv[key] = undefined
+    })
+  }
+
+  sigletonify(self)
+  return self
+}
+
+// rebase an absolute path to a relative one with respect to a base directory
+// exported for tests
+exports.rebase = rebase
+function rebase (base, dir) {
+  return path.relative(base, dir)
+}
+
+/*  Hack an instance of Argv with process.argv into Argv
+    so people can do
+    require('yargs')(['--beeble=1','-z','zizzle']).argv
+    to parse a list of args and
+    require('yargs').argv
+    to get a parsed version of process.argv.
+*/
+function sigletonify (inst) {
+  Object.keys(inst).forEach(function (key) {
+    if (key === 'argv') {
+      Argv.__defineGetter__(key, inst.__lookupGetter__(key))
+    } else {
+      Argv[key] = typeof inst[key] === 'function'
+      ? inst[key].bind(inst)
+      : inst[key]
+    }
+  })
+}
diff --git a/node_modules/uglify-js/node_modules/yargs/lib/completion.js b/node_modules/uglify-js/node_modules/yargs/lib/completion.js
new file mode 100644
index 000000000..32387be27
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/lib/completion.js
@@ -0,0 +1,71 @@
+var fs = require('fs'),
+  path = require('path')
+
+// add bash completions to your
+//  yargs-powered applications.
+module.exports = function (yargs, usage) {
+  var self = {
+    completionKey: 'get-yargs-completions'
+  }
+
+  // get a list of completion commands.
+  self.getCompletion = function (done) {
+    var completions = [],
+    current = process.argv[process.argv.length - 1],
+    previous = process.argv.slice(process.argv.indexOf('--' + self.completionKey) + 1),
+    argv = yargs.parse(previous)
+
+    // a custom completion function can be provided
+    // to completion().
+    if (completionFunction) {
+      if (completionFunction.length < 3) {
+        // synchronous completion function.
+        return done(completionFunction(current, argv))
+      } else {
+        // asynchronous completion function
+        return completionFunction(current, argv, function (completions) {
+          done(completions)
+        })
+      }
+    }
+
+    if (!current.match(/^-/)) {
+      usage.getCommands().forEach(function (command) {
+        completions.push(command[0])
+      })
+    }
+
+    if (current.match(/^-/)) {
+      Object.keys(yargs.getOptions().key).forEach(function (key) {
+        completions.push('--' + key)
+      })
+    }
+
+    done(completions)
+  }
+
+  // generate the completion script to add to your .bashrc.
+  self.generateCompletionScript = function ($0) {
+    var script = fs.readFileSync(
+      path.resolve(__dirname, '../completion.sh.hbs'),
+      'utf-8'
+    ),
+    name = path.basename($0)
+
+    // add ./to applications not yet installed as bin.
+    if ($0.match(/\.js$/)) $0 = './' + $0
+
+    script = script.replace(/{{app_name}}/g, name)
+    return script.replace(/{{app_path}}/g, $0)
+  }
+
+  // register a function to perform your own custom
+  // completions., this function can be either
+  // synchrnous or asynchronous.
+  var completionFunction = null
+  self.registerFunction = function (fn) {
+    completionFunction = fn
+  }
+
+  return self
+}
diff --git a/node_modules/uglify-js/node_modules/yargs/lib/parser.js b/node_modules/uglify-js/node_modules/yargs/lib/parser.js
new file mode 100644
index 000000000..5e4618cb5
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/lib/parser.js
@@ -0,0 +1,448 @@
+// fancy-pants parsing of argv, originally forked
+// from minimist: https://www.npmjs.com/package/minimist
+var camelCase = require('camelcase'),
+  path = require('path')
+
+function increment (orig) {
+  return orig !== undefined ? orig + 1 : 0
+}
+
+module.exports = function (args, opts) {
+  if (!opts) opts = {}
+  var flags = { arrays: {}, bools: {}, strings: {}, counts: {}, normalize: {}, configs: {} }
+
+  ;[].concat(opts['array']).filter(Boolean).forEach(function (key) {
+    flags.arrays[key] = true
+  })
+
+  ;[].concat(opts['boolean']).filter(Boolean).forEach(function (key) {
+    flags.bools[key] = true
+  })
+
+  ;[].concat(opts.string).filter(Boolean).forEach(function (key) {
+    flags.strings[key] = true
+  })
+
+  ;[].concat(opts.count).filter(Boolean).forEach(function (key) {
+    flags.counts[key] = true
+  })
+
+  ;[].concat(opts.normalize).filter(Boolean).forEach(function (key) {
+    flags.normalize[key] = true
+  })
+
+  ;[].concat(opts.config).filter(Boolean).forEach(function (key) {
+    flags.configs[key] = true
+  })
+
+  var aliases = {},
+  newAliases = {}
+
+  extendAliases(opts.key)
+  extendAliases(opts.alias)
+
+  var defaults = opts['default'] || {}
+  Object.keys(defaults).forEach(function (key) {
+    if (/-/.test(key) && !opts.alias[key]) {
+      aliases[key] = aliases[key] || []
+    }
+    (aliases[key] || []).forEach(function (alias) {
+      defaults[alias] = defaults[key]
+    })
+  })
+
+  var argv = { _: [] }
+
+  Object.keys(flags.bools).forEach(function (key) {
+    setArg(key, !(key in defaults) ? false : defaults[key])
+  })
+
+  var notFlags = []
+  if (args.indexOf('--') !== -1) {
+    notFlags = args.slice(args.indexOf('--') + 1)
+    args = args.slice(0, args.indexOf('--'))
+  }
+
+  for (var i = 0; i < args.length; i++) {
+    var arg = args[i],
+      broken,
+      key,
+      letters,
+      m,
+      next,
+      value
+
+    // -- seperated by =
+    if (arg.match(/^--.+=/)) {
+      // Using [\s\S] instead of . because js doesn't support the
+      // 'dotall' regex modifier. See:
+      // http://stackoverflow.com/a/1068308/13216
+      m = arg.match(/^--([^=]+)=([\s\S]*)$/)
+
+      // nargs format = '--f=monkey washing cat'
+      if (checkAllAliases(m[1], opts.narg)) {
+        args.splice(i + 1, m[1], m[2])
+        i = eatNargs(i, m[1], args)
+      // arrays format = '--f=a b c'
+      } else if (checkAllAliases(m[1], flags.arrays) && args.length > i + 1) {
+        args.splice(i + 1, m[1], m[2])
+        i = eatArray(i, m[1], args)
+      } else {
+        setArg(m[1], m[2])
+      }
+    } else if (arg.match(/^--no-.+/)) {
+      key = arg.match(/^--no-(.+)/)[1]
+      setArg(key, false)
+
+    // -- seperated by space.
+    } else if (arg.match(/^--.+/)) {
+      key = arg.match(/^--(.+)/)[1]
+
+      // nargs format = '--foo a b c'
+      if (checkAllAliases(key, opts.narg)) {
+        i = eatNargs(i, key, args)
+      // array format = '--foo a b c'
+      } else if (checkAllAliases(key, flags.arrays) && args.length > i + 1) {
+        i = eatArray(i, key, args)
+      } else {
+        next = args[i + 1]
+
+        if (next !== undefined && !next.match(/^-/)
+        && !checkAllAliases(key, flags.bools)
+        && !checkAllAliases(key, flags.counts)) {
+          setArg(key, next)
+          i++
+        } else if (/^(true|false)$/.test(next)) {
+          setArg(key, next)
+          i++
+        } else {
+          setArg(key, defaultForType(guessType(key, flags)))
+        }
+      }
+
+    // dot-notation flag seperated by '='.
+    } else if (arg.match(/^-.\..+=/)) {
+      m = arg.match(/^-([^=]+)=([\s\S]*)$/)
+      setArg(m[1], m[2])
+
+    // dot-notation flag seperated by space.
+    } else if (arg.match(/^-.\..+/)) {
+      next = args[i + 1]
+      key = arg.match(/^-(.\..+)/)[1]
+
+      if (next !== undefined && !next.match(/^-/)
+        && !checkAllAliases(key, flags.bools)
+        && !checkAllAliases(key, flags.counts)) {
+        setArg(key, next)
+        i++
+      } else {
+        setArg(key, defaultForType(guessType(key, flags)))
+      }
+    } else if (arg.match(/^-[^-]+/)) {
+      letters = arg.slice(1, -1).split('')
+      broken = false
+
+      for (var j = 0; j < letters.length; j++) {
+        next = arg.slice(j + 2)
+
+        if (letters[j + 1] && letters[j + 1] === '=') {
+          value = arg.slice(j + 3)
+          key = letters[j]
+
+          // nargs format = '-f=monkey washing cat'
+          if (checkAllAliases(letters[j], opts.narg)) {
+            args.splice(i + 1, 0, value)
+            i = eatNargs(i, key, args)
+          // array format = '-f=a b c'
+          } else if (checkAllAliases(key, flags.arrays) && args.length > i + 1) {
+            args.splice(i + 1, 0, value)
+            i = eatArray(i, key, args)
+          } else {
+            setArg(key, value)
+          }
+
+          broken = true
+          break
+        }
+
+        if (next === '-') {
+          setArg(letters[j], next)
+          continue
+        }
+
+        if (/[A-Za-z]/.test(letters[j])
+        && /-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) {
+          setArg(letters[j], next)
+          broken = true
+          break
+        }
+
+        if (letters[j + 1] && letters[j + 1].match(/\W/)) {
+          setArg(letters[j], arg.slice(j + 2))
+          broken = true
+          break
+        } else {
+          setArg(letters[j], defaultForType(guessType(letters[j], flags)))
+        }
+      }
+
+      key = arg.slice(-1)[0]
+
+      if (!broken && key !== '-') {
+        // nargs format = '-f a b c'
+        if (checkAllAliases(key, opts.narg)) {
+          i = eatNargs(i, key, args)
+        // array format = '-f a b c'
+        } else if (checkAllAliases(key, flags.arrays) && args.length > i + 1) {
+          i = eatArray(i, key, args)
+        } else {
+          if (args[i + 1] && !/^(-|--)[^-]/.test(args[i + 1])
+          && !checkAllAliases(key, flags.bools)
+          && !checkAllAliases(key, flags.counts)) {
+            setArg(key, args[i + 1])
+            i++
+          } else if (args[i + 1] && /true|false/.test(args[i + 1])) {
+            setArg(key, args[i + 1])
+            i++
+          } else {
+            setArg(key, defaultForType(guessType(key, flags)))
+          }
+        }
+      }
+    } else {
+      argv._.push(
+        flags.strings['_'] || !isNumber(arg) ? arg : Number(arg)
+      )
+    }
+  }
+
+  setConfig(argv)
+  applyDefaultsAndAliases(argv, aliases, defaults)
+
+  Object.keys(flags.counts).forEach(function (key) {
+    setArg(key, defaults[key])
+  })
+
+  notFlags.forEach(function (key) {
+    argv._.push(key)
+  })
+
+  // how many arguments should we consume, based
+  // on the nargs option?
+  function eatNargs (i, key, args) {
+    var toEat = checkAllAliases(key, opts.narg)
+
+    if (args.length - (i + 1) < toEat) throw Error('not enough arguments following: ' + key)
+
+    for (var ii = i + 1; ii < (toEat + i + 1); ii++) {
+      setArg(key, args[ii])
+    }
+
+    return (i + toEat)
+  }
+
+  // if an option is an array, eat all non-hyphenated arguments
+  // following it... YUM!
+  // e.g., --foo apple banana cat becomes ["apple", "banana", "cat"]
+  function eatArray (i, key, args) {
+    for (var ii = i + 1; ii < args.length; ii++) {
+      if (/^-/.test(args[ii])) break
+      i = ii
+      setArg(key, args[ii])
+    }
+
+    return i
+  }
+
+  function setArg (key, val) {
+    // handle parsing boolean arguments --foo=true --bar false.
+    if (checkAllAliases(key, flags.bools) || checkAllAliases(key, flags.counts)) {
+      if (typeof val === 'string') val = val === 'true'
+    }
+
+    if (/-/.test(key) && !(aliases[key] && aliases[key].length)) {
+      var c = camelCase(key)
+      aliases[key] = [c]
+      newAliases[c] = true
+    }
+
+    var value = !checkAllAliases(key, flags.strings) && isNumber(val) ? Number(val) : val
+
+    if (checkAllAliases(key, flags.counts)) {
+      value = increment
+    }
+
+    var splitKey = key.split('.')
+    setKey(argv, splitKey, value)
+
+    ;(aliases[splitKey[0]] || []).forEach(function (x) {
+      x = x.split('.')
+
+      // handle populating dot notation for both
+      // the key and its aliases.
+      if (splitKey.length > 1) {
+        var a = [].concat(splitKey)
+        a.shift() // nuke the old key.
+        x = x.concat(a)
+      }
+
+      setKey(argv, x, value)
+    })
+
+    var keys = [key].concat(aliases[key] || [])
+    for (var i = 0, l = keys.length; i < l; i++) {
+      if (flags.normalize[keys[i]]) {
+        keys.forEach(function (key) {
+          argv.__defineSetter__(key, function (v) {
+            val = path.normalize(v)
+          })
+
+          argv.__defineGetter__(key, function () {
+            return typeof val === 'string' ?
+            path.normalize(val) : val
+          })
+        })
+        break
+      }
+    }
+  }
+
+  // set args from config.json file, this should be
+  // applied last so that defaults can be applied.
+  function setConfig (argv) {
+    var configLookup = {}
+
+    // expand defaults/aliases, in-case any happen to reference
+    // the config.json file.
+    applyDefaultsAndAliases(configLookup, aliases, defaults)
+
+    Object.keys(flags.configs).forEach(function (configKey) {
+      var configPath = argv[configKey] || configLookup[configKey]
+      if (configPath) {
+        try {
+          var config = require(path.resolve(process.cwd(), configPath))
+
+          Object.keys(config).forEach(function (key) {
+            // setting arguments via CLI takes precedence over
+            // values within the config file.
+            if (argv[key] === undefined) {
+              delete argv[key]
+              setArg(key, config[key])
+            }
+          })
+        } catch (ex) {
+          throw Error('invalid json config file: ' + configPath)
+        }
+      }
+    })
+  }
+
+  function applyDefaultsAndAliases (obj, aliases, defaults) {
+    Object.keys(defaults).forEach(function (key) {
+      if (!hasKey(obj, key.split('.'))) {
+        setKey(obj, key.split('.'), defaults[key])
+
+        ;(aliases[key] || []).forEach(function (x) {
+          setKey(obj, x.split('.'), defaults[key])
+        })
+      }
+    })
+  }
+
+  function hasKey (obj, keys) {
+    var o = obj
+    keys.slice(0, -1).forEach(function (key) {
+      o = (o[key] || {})
+    })
+
+    var key = keys[keys.length - 1]
+    return key in o
+  }
+
+  function setKey (obj, keys, value) {
+    var o = obj
+    keys.slice(0, -1).forEach(function (key) {
+      if (o[key] === undefined) o[key] = {}
+      o = o[key]
+    })
+
+    var key = keys[keys.length - 1]
+    if (value === increment) {
+      o[key] = increment(o[key])
+    } else if (o[key] === undefined && checkAllAliases(key, flags.arrays)) {
+      o[key] = Array.isArray(value) ? value : [value]
+    } else if (o[key] === undefined || typeof o[key] === 'boolean') {
+      o[key] = value
+    } else if (Array.isArray(o[key])) {
+      o[key].push(value)
+    } else {
+      o[key] = [ o[key], value ]
+    }
+  }
+
+  // extend the aliases list with inferred aliases.
+  function extendAliases (obj) {
+    Object.keys(obj || {}).forEach(function (key) {
+      aliases[key] = [].concat(opts.alias[key] || [])
+      // For "--option-name", also set argv.optionName
+      aliases[key].concat(key).forEach(function (x) {
+        if (/-/.test(x)) {
+          var c = camelCase(x)
+          aliases[key].push(c)
+          newAliases[c] = true
+        }
+      })
+      aliases[key].forEach(function (x) {
+        aliases[x] = [key].concat(aliases[key].filter(function (y) {
+          return x !== y
+        }))
+      })
+    })
+  }
+
+  // check if a flag is set for any of a key's aliases.
+  function checkAllAliases (key, flag) {
+    var isSet = false,
+    toCheck = [].concat(aliases[key] || [], key)
+
+    toCheck.forEach(function (key) {
+      if (flag[key]) isSet = flag[key]
+    })
+
+    return isSet
+  }
+
+  // return a default value, given the type of a flag.,
+  // e.g., key of type 'string' will default to '', rather than 'true'.
+  function defaultForType (type) {
+    var def = {
+      boolean: true,
+      string: '',
+      array: []
+    }
+
+    return def[type]
+  }
+
+  // given a flag, enforce a default type.
+  function guessType (key, flags) {
+    var type = 'boolean'
+
+    if (flags.strings && flags.strings[key]) type = 'string'
+    else if (flags.arrays && flags.arrays[key]) type = 'array'
+
+    return type
+  }
+
+  function isNumber (x) {
+    if (typeof x === 'number') return true
+    if (/^0x[0-9a-f]+$/i.test(x)) return true
+    return /^[-+]?(?:\d+(?:\.\d*)?|\.\d+)(e[-+]?\d+)?$/.test(x)
+  }
+
+  return {
+    argv: argv,
+    aliases: aliases,
+    newAliases: newAliases
+  }
+}
diff --git a/node_modules/uglify-js/node_modules/yargs/lib/usage.js b/node_modules/uglify-js/node_modules/yargs/lib/usage.js
new file mode 100644
index 000000000..8cfe9dd0c
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/lib/usage.js
@@ -0,0 +1,314 @@
+// this file handles outputting usage instructions,
+// failures, etc. keeps logging in one place.
+var cliui = require('cliui'),
+  decamelize = require('decamelize'),
+  wsize = require('window-size')
+
+module.exports = function (yargs) {
+  var self = {}
+
+  // methods for ouputting/building failure message.
+  var fails = []
+  self.failFn = function (f) {
+    fails.push(f)
+  }
+
+  var failMessage = null
+  var showHelpOnFail = true
+  self.showHelpOnFail = function (enabled, message) {
+    if (typeof enabled === 'string') {
+      message = enabled
+      enabled = true
+    } else if (typeof enabled === 'undefined') {
+      enabled = true
+    }
+    failMessage = message
+    showHelpOnFail = enabled
+    return self
+  }
+
+  self.fail = function (msg) {
+    if (fails.length) {
+      fails.forEach(function (f) {
+        f(msg)
+      })
+    } else {
+      if (showHelpOnFail) yargs.showHelp('error')
+      if (msg) console.error(msg)
+      if (failMessage) {
+        if (msg) console.error('')
+        console.error(failMessage)
+      }
+      if (yargs.getExitProcess()) {
+        process.exit(1)
+      } else {
+        throw new Error(msg)
+      }
+    }
+  }
+
+  // methods for ouputting/building help (usage) message.
+  var usage
+  self.usage = function (msg) {
+    usage = msg
+  }
+
+  var examples = []
+  self.example = function (cmd, description) {
+    examples.push([cmd, description || ''])
+  }
+
+  var commands = []
+  self.command = function (cmd, description) {
+    commands.push([cmd, description || ''])
+  }
+  self.getCommands = function () {
+    return commands
+  }
+
+  var descriptions = {}
+  self.describe = function (key, desc) {
+    if (typeof key === 'object') {
+      Object.keys(key).forEach(function (k) {
+        self.describe(k, key[k])
+      })
+    } else {
+      descriptions[key] = desc
+    }
+  }
+  self.getDescriptions = function () {
+    return descriptions
+  }
+
+  var epilog
+  self.epilog = function (msg) {
+    epilog = msg
+  }
+
+  var wrap = windowWidth()
+  self.wrap = function (cols) {
+    wrap = cols
+  }
+
+  self.help = function () {
+    normalizeAliases()
+
+    var demanded = yargs.getDemanded(),
+      options = yargs.getOptions(),
+      keys = Object.keys(
+        Object.keys(descriptions)
+        .concat(Object.keys(demanded))
+        .concat(Object.keys(options.default))
+        .reduce(function (acc, key) {
+          if (key !== '_') acc[key] = true
+          return acc
+        }, {})
+      ),
+      ui = cliui({
+        width: wrap,
+        wrap: !!wrap
+      })
+
+    // the usage string.
+    if (usage) {
+      var u = usage.replace(/\$0/g, yargs.$0)
+      ui.div(u + '\n')
+    }
+
+    // your application's commands, i.e., non-option
+    // arguments populated in '_'.
+    if (commands.length) {
+      ui.div('Commands:')
+
+      commands.forEach(function (command) {
+        ui.div(
+          {text: command[0], padding: [0, 2, 0, 2], width: maxWidth(commands) + 4},
+          {text: command[1]}
+        )
+      })
+
+      ui.div()
+    }
+
+    // the options table.
+    var aliasKeys = (Object.keys(options.alias) || [])
+      .concat(Object.keys(yargs.parsed.newAliases) || [])
+
+    keys = keys.filter(function (key) {
+      return !yargs.parsed.newAliases[key] && aliasKeys.every(function (alias) {
+        return (options.alias[alias] || []).indexOf(key) === -1
+      })
+    })
+
+    var switches = keys.reduce(function (acc, key) {
+      acc[key] = [ key ].concat(options.alias[key] || [])
+      .map(function (sw) {
+        return (sw.length > 1 ? '--' : '-') + sw
+      })
+      .join(', ')
+
+      return acc
+    }, {})
+
+    if (keys.length) {
+      ui.div('Options:')
+
+      keys.forEach(function (key) {
+        var kswitch = switches[key]
+        var desc = descriptions[key] || ''
+        var type = null
+
+        if (~options.boolean.indexOf(key)) type = '[boolean]'
+        if (~options.count.indexOf(key)) type = '[count]'
+        if (~options.string.indexOf(key)) type = '[string]'
+        if (~options.normalize.indexOf(key)) type = '[string]'
+        if (~options.array.indexOf(key)) type = '[array]'
+
+        var extra = [
+            type,
+            demanded[key] ? '[required]' : null,
+            defaultString(options.default[key], options.defaultDescription[key])
+          ].filter(Boolean).join(' ')
+
+        ui.span(
+          {text: kswitch, padding: [0, 2, 0, 2], width: maxWidth(switches) + 4},
+          desc
+        )
+
+        if (extra) ui.div({text: extra, padding: [0, 0, 0, 2], align: 'right'})
+        else ui.div()
+      })
+
+      ui.div()
+    }
+
+    // describe some common use-cases for your application.
+    if (examples.length) {
+      ui.div('Examples:')
+
+      examples.forEach(function (example) {
+        example[0] = example[0].replace(/\$0/g, yargs.$0)
+      })
+
+      examples.forEach(function (example) {
+        ui.div(
+          {text: example[0], padding: [0, 2, 0, 2], width: maxWidth(examples) + 4},
+          example[1]
+        )
+      })
+
+      ui.div()
+    }
+
+    // the usage string.
+    if (epilog) {
+      var e = epilog.replace(/\$0/g, yargs.$0)
+      ui.div(e + '\n')
+    }
+
+    return ui.toString()
+  }
+
+  // return the maximum width of a string
+  // in the left-hand column of a table.
+  function maxWidth (table) {
+    var width = 0
+
+    // table might be of the form [leftColumn],
+    // or {key: leftColumn}}
+    if (!Array.isArray(table)) {
+      table = Object.keys(table).map(function (key) {
+        return [table[key]]
+      })
+    }
+
+    table.forEach(function (v) {
+      width = Math.max(v[0].length, width)
+    })
+
+    // if we've enabled 'wrap' we should limit
+    // the max-width of the left-column.
+    if (wrap) width = Math.min(width, parseInt(wrap * 0.5, 10))
+
+    return width
+  }
+
+  // make sure any options set for aliases,
+  // are copied to the keys being aliased.
+  function normalizeAliases () {
+    var options = yargs.getOptions(),
+    demanded = yargs.getDemanded()
+
+    ;(Object.keys(options.alias) || []).forEach(function (key) {
+      options.alias[key].forEach(function (alias) {
+        // copy descriptions.
+        if (descriptions[alias]) self.describe(key, descriptions[alias])
+        // copy demanded.
+        if (demanded[alias]) yargs.demand(key, demanded[alias].msg)
+
+        // type messages.
+        if (~options.boolean.indexOf(alias)) yargs.boolean(key)
+        if (~options.count.indexOf(alias)) yargs.count(key)
+        if (~options.string.indexOf(alias)) yargs.string(key)
+        if (~options.normalize.indexOf(alias)) yargs.normalize(key)
+        if (~options.array.indexOf(alias)) yargs.array(key)
+      })
+    })
+  }
+
+  self.showHelp = function (level) {
+    level = level || 'error'
+    console[level](self.help())
+  }
+
+  self.functionDescription = function (fn, defaultDescription) {
+    if (defaultDescription) {
+      return defaultDescription
+    }
+    var description = fn.name ? decamelize(fn.name, '-') : 'generated-value'
+    return ['(', description, ')'].join('')
+  }
+
+  // format the default-value-string displayed in
+  // the right-hand column.
+  function defaultString (value, defaultDescription) {
+    var string = '[default: '
+
+    if (value === undefined) return null
+
+    if (defaultDescription) {
+      string += defaultDescription
+    } else {
+      switch (typeof value) {
+        case 'string':
+          string += JSON.stringify(value)
+          break
+        case 'object':
+          string += JSON.stringify(value)
+          break
+        default:
+          string += value
+      }
+    }
+
+    return string + ']'
+  }
+
+  // guess the width of the console window, max-width 80.
+  function windowWidth () {
+    return wsize.width ? Math.min(80, wsize.width) : null
+  }
+
+  // logic for displaying application version.
+  var version = null
+  self.version = function (ver, opt, msg) {
+    version = ver
+  }
+
+  self.showVersion = function () {
+    if (typeof version === 'function') console.log(version())
+    else console.log(version)
+  }
+
+  return self
+}
diff --git a/node_modules/uglify-js/node_modules/yargs/lib/validation.js b/node_modules/uglify-js/node_modules/yargs/lib/validation.js
new file mode 100644
index 000000000..19afe9401
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/lib/validation.js
@@ -0,0 +1,196 @@
+// validation-type-stuff, missing params,
+// bad implications, custom checks.
+module.exports = function (yargs, usage) {
+  var self = {}
+
+  // validate appropriate # of non-option
+  // arguments were provided, i.e., '_'.
+  self.nonOptionCount = function (argv) {
+    var demanded = yargs.getDemanded()
+
+    if (demanded._ && argv._.length < demanded._.count) {
+      if (demanded._.msg !== undefined) {
+        usage.fail(demanded._.msg)
+      } else {
+        usage.fail('Not enough non-option arguments: got '
+          + argv._.length + ', need at least ' + demanded._.count
+        )
+      }
+    }
+  }
+
+  // make sure that any args that require an
+  // value (--foo=bar), have a value.
+  self.missingArgumentValue = function (argv) {
+    var options = yargs.getOptions(),
+      defaultValues = [true, false, '']
+
+    if (options.requiresArg.length > 0) {
+      var missingRequiredArgs = []
+
+      options.requiresArg.forEach(function (key) {
+        var value = argv[key]
+
+        // if a value is explicitly requested,
+        // flag argument as missing if it does not
+        // look like foo=bar was entered.
+        if (~defaultValues.indexOf(value)
+        || (Array.isArray(value) && !value.length)) {
+          missingRequiredArgs.push(key)
+        }
+      })
+
+      if (missingRequiredArgs.length === 1) {
+        usage.fail('Missing argument value: ' + missingRequiredArgs[0])
+      } else if (missingRequiredArgs.length > 1) {
+        var message = 'Missing argument values: ' + missingRequiredArgs.join(', ')
+        usage.fail(message)
+      }
+    }
+  }
+
+  // make sure all the required arguments are present.
+  self.requiredArguments = function (argv) {
+    var demanded = yargs.getDemanded(),
+      missing = null
+
+    Object.keys(demanded).forEach(function (key) {
+      if (!argv.hasOwnProperty(key)) {
+        missing = missing || {}
+        missing[key] = demanded[key]
+      }
+    })
+
+    if (missing) {
+      var customMsgs = []
+      Object.keys(missing).forEach(function (key) {
+        var msg = missing[key].msg
+        if (msg && customMsgs.indexOf(msg) < 0) {
+          customMsgs.push(msg)
+        }
+      })
+
+      var customMsg = customMsgs.length ? '\n' + customMsgs.join('\n') : ''
+      usage.fail('Missing required arguments: ' + Object.keys(missing).join(', ') + customMsg)
+    }
+  }
+
+  // check for unknown arguments (strict-mode).
+  self.unknownArguments = function (argv, aliases) {
+    var descriptions = usage.getDescriptions(),
+      demanded = yargs.getDemanded(),
+      unknown = [],
+      aliasLookup = {}
+
+    Object.keys(aliases).forEach(function (key) {
+      aliases[key].forEach(function (alias) {
+        aliasLookup[alias] = key
+      })
+    })
+
+    Object.keys(argv).forEach(function (key) {
+      if (key !== '$0' && key !== '_' &&
+        !descriptions.hasOwnProperty(key) &&
+        !demanded.hasOwnProperty(key) &&
+        !aliasLookup.hasOwnProperty(key)) {
+        unknown.push(key)
+      }
+    })
+
+    if (unknown.length === 1) {
+      usage.fail('Unknown argument: ' + unknown[0])
+    } else if (unknown.length > 1) {
+      usage.fail('Unknown arguments: ' + unknown.join(', '))
+    }
+  }
+
+  // custom checks, added using the `check` option on yargs.
+  var checks = []
+  self.check = function (f) {
+    checks.push(f)
+  }
+
+  self.customChecks = function (argv, aliases) {
+    checks.forEach(function (f) {
+      try {
+        var result = f(argv, aliases)
+        if (!result) {
+          usage.fail('Argument check failed: ' + f.toString())
+        } else if (typeof result === 'string') {
+          usage.fail(result)
+        }
+      } catch (err) {
+        usage.fail(err.message ? err.message : err)
+      }
+    })
+  }
+
+  // check implications, argument foo implies => argument bar.
+  var implied = {}
+  self.implies = function (key, value) {
+    if (typeof key === 'object') {
+      Object.keys(key).forEach(function (k) {
+        self.implies(k, key[k])
+      })
+    } else {
+      implied[key] = value
+    }
+  }
+  self.getImplied = function () {
+    return implied
+  }
+
+  self.implications = function (argv) {
+    var implyFail = []
+
+    Object.keys(implied).forEach(function (key) {
+      var num,
+        origKey = key,
+        value = implied[key]
+
+      // convert string '1' to number 1
+      num = Number(key)
+      key = isNaN(num) ? key : num
+
+      if (typeof key === 'number') {
+        // check length of argv._
+        key = argv._.length >= key
+      } else if (key.match(/^--no-.+/)) {
+        // check if key doesn't exist
+        key = key.match(/^--no-(.+)/)[1]
+        key = !argv[key]
+      } else {
+        // check if key exists
+        key = argv[key]
+      }
+
+      num = Number(value)
+      value = isNaN(num) ? value : num
+
+      if (typeof value === 'number') {
+        value = argv._.length >= value
+      } else if (value.match(/^--no-.+/)) {
+        value = value.match(/^--no-(.+)/)[1]
+        value = !argv[value]
+      } else {
+        value = argv[value]
+      }
+
+      if (key && !value) {
+        implyFail.push(origKey)
+      }
+    })
+
+    if (implyFail.length) {
+      var msg = 'Implications failed:\n'
+
+      implyFail.forEach(function (key) {
+        msg += ('  ' + key + ' -> ' + implied[key])
+      })
+
+      usage.fail(msg)
+    }
+  }
+
+  return self
+}
diff --git a/node_modules/uglify-js/node_modules/yargs/package.json b/node_modules/uglify-js/node_modules/yargs/package.json
new file mode 100644
index 000000000..7dfc3ced7
--- /dev/null
+++ b/node_modules/uglify-js/node_modules/yargs/package.json
@@ -0,0 +1,85 @@
+{
+  "name": "yargs",
+  "version": "3.10.0",
+  "description": "Light-weight option parsing with an argv hash. No optstrings attached.",
+  "main": "./index.js",
+  "files": [
+    "index.js",
+    "lib",
+    "completion.sh.hbs",
+    "LICENSE"
+  ],
+  "dependencies": {
+    "camelcase": "^1.0.2",
+    "cliui": "^2.1.0",
+    "decamelize": "^1.0.0",
+    "window-size": "0.1.0"
+  },
+  "devDependencies": {
+    "chai": "^2.2.0",
+    "coveralls": "^2.11.2",
+    "hashish": "0.0.4",
+    "mocha": "^2.2.1",
+    "nyc": "^2.2.1",
+    "standard": "^3.11.1"
+  },
+  "scripts": {
+    "test": "standard && nyc mocha --check-leaks && nyc report",
+    "coverage": "nyc report --reporter=text-lcov | coveralls"
+  },
+  "repository": {
+    "type": "git",
+    "url": "http://github.com/bcoe/yargs.git"
+  },
+  "standard": {
+    "ignore": [
+      "**/example/**"
+    ],
+    "globals": [
+      "it"
+    ]
+  },
+  "keywords": [
+    "argument",
+    "args",
+    "option",
+    "parser",
+    "parsing",
+    "cli",
+    "command"
+  ],
+  "author": {
+    "name": "Alex Ford",
+    "email": "Alex.Ford@CodeTunnel.com",
+    "url": "http://CodeTunnel.com"
+  },
+  "contributors": [
+    {
+      "name": "Benjamin Coe",
+      "email": "ben@npmjs.com",
+      "url": "https://github.com/bcoe"
+    },
+    {
+      "name": "Chris Needham",
+      "email": "chris@chrisneedham.com",
+      "url": "http://chrisneedham.com"
+    },
+    {
+      "name": "James Nylen",
+      "email": "jnylen@gmail.com",
+      "url": "https://github.com/nylen"
+    },
+    {
+      "name": "Benjamin Horsleben",
+      "url": "https://github.com/fizker"
+    },
+    {
+      "name": "Lin Clark",
+      "url": "https://github.com/linclark"
+    }
+  ],
+  "license": "MIT",
+  "engine": {
+    "node": ">=0.4"
+  }
+}
diff --git a/node_modules/uglify-js/package.json b/node_modules/uglify-js/package.json
new file mode 100644
index 000000000..cfa8eb742
--- /dev/null
+++ b/node_modules/uglify-js/package.json
@@ -0,0 +1,54 @@
+{
+  "name": "uglify-js",
+  "description": "JavaScript parser, mangler/compressor and beautifier toolkit",
+  "homepage": "http://lisperator.net/uglifyjs",
+  "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
+  "license": "BSD-2-Clause",
+  "version": "2.8.22",
+  "engines": {
+    "node": ">=0.8.0"
+  },
+  "maintainers": [
+    "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/mishoo/UglifyJS2.git"
+  },
+  "bugs": {
+    "url": "https://github.com/mishoo/UglifyJS2/issues"
+  },
+  "main": "tools/node.js",
+  "bin": {
+    "uglifyjs": "bin/uglifyjs"
+  },
+  "files": [
+    "bin",
+    "lib",
+    "tools",
+    "LICENSE"
+  ],
+  "dependencies": {
+    "source-map": "~0.5.1",
+    "yargs": "~3.10.0"
+  },
+  "devDependencies": {
+    "acorn": "~0.6.0",
+    "escodegen": "~1.3.3",
+    "esfuzz": "~0.3.1",
+    "estraverse": "~1.5.1",
+    "mocha": "~2.3.4"
+  },
+  "optionalDependencies": {
+    "uglify-to-browserify": "~1.0.0"
+  },
+  "browserify": {
+    "transform": [
+      "uglify-to-browserify"
+    ]
+  },
+  "scripts": {
+    "test": "node test/run-tests.js"
+  },
+  "keywords": ["uglify", "uglify-js", "minify", "minifier"]
+}
diff --git a/node_modules/uglify-js/tools/domprops.json b/node_modules/uglify-js/tools/domprops.json
new file mode 100644
index 000000000..6f6c221db
--- /dev/null
+++ b/node_modules/uglify-js/tools/domprops.json
@@ -0,0 +1,5603 @@
+{
+    "props": [
+        "$&",
+        "$'",
+        "$*",
+        "$+",
+        "$1",
+        "$2",
+        "$3",
+        "$4",
+        "$5",
+        "$6",
+        "$7",
+        "$8",
+        "$9",
+        "$_",
+        "$`",
+        "$input",
+        "@@iterator",
+        "ABORT_ERR",
+        "ACTIVE",
+        "ACTIVE_ATTRIBUTES",
+        "ACTIVE_TEXTURE",
+        "ACTIVE_UNIFORMS",
+        "ADDITION",
+        "ALIASED_LINE_WIDTH_RANGE",
+        "ALIASED_POINT_SIZE_RANGE",
+        "ALLOW_KEYBOARD_INPUT",
+        "ALLPASS",
+        "ALPHA",
+        "ALPHA_BITS",
+        "ALT_MASK",
+        "ALWAYS",
+        "ANY_TYPE",
+        "ANY_UNORDERED_NODE_TYPE",
+        "ARRAY_BUFFER",
+        "ARRAY_BUFFER_BINDING",
+        "ATTACHED_SHADERS",
+        "ATTRIBUTE_NODE",
+        "AT_TARGET",
+        "AddSearchProvider",
+        "AnalyserNode",
+        "AnimationEvent",
+        "AnonXMLHttpRequest",
+        "ApplicationCache",
+        "ApplicationCacheErrorEvent",
+        "Array",
+        "ArrayBuffer",
+        "Attr",
+        "Audio",
+        "AudioBuffer",
+        "AudioBufferSourceNode",
+        "AudioContext",
+        "AudioDestinationNode",
+        "AudioListener",
+        "AudioNode",
+        "AudioParam",
+        "AudioProcessingEvent",
+        "AudioStreamTrack",
+        "AutocompleteErrorEvent",
+        "BACK",
+        "BAD_BOUNDARYPOINTS_ERR",
+        "BANDPASS",
+        "BLEND",
+        "BLEND_COLOR",
+        "BLEND_DST_ALPHA",
+        "BLEND_DST_RGB",
+        "BLEND_EQUATION",
+        "BLEND_EQUATION_ALPHA",
+        "BLEND_EQUATION_RGB",
+        "BLEND_SRC_ALPHA",
+        "BLEND_SRC_RGB",
+        "BLUE_BITS",
+        "BLUR",
+        "BOOL",
+        "BOOLEAN_TYPE",
+        "BOOL_VEC2",
+        "BOOL_VEC3",
+        "BOOL_VEC4",
+        "BOTH",
+        "BROWSER_DEFAULT_WEBGL",
+        "BUBBLING_PHASE",
+        "BUFFER_SIZE",
+        "BUFFER_USAGE",
+        "BYTE",
+        "BYTES_PER_ELEMENT",
+        "BarProp",
+        "BaseHref",
+        "BatteryManager",
+        "BeforeLoadEvent",
+        "BeforeUnloadEvent",
+        "BiquadFilterNode",
+        "Blob",
+        "BlobEvent",
+        "Boolean",
+        "CAPTURING_PHASE",
+        "CCW",
+        "CDATASection",
+        "CDATA_SECTION_NODE",
+        "CHANGE",
+        "CHARSET_RULE",
+        "CHECKING",
+        "CLAMP_TO_EDGE",
+        "CLICK",
+        "CLOSED",
+        "CLOSING",
+        "COLOR_ATTACHMENT0",
+        "COLOR_BUFFER_BIT",
+        "COLOR_CLEAR_VALUE",
+        "COLOR_WRITEMASK",
+        "COMMENT_NODE",
+        "COMPILE_STATUS",
+        "COMPRESSED_RGBA_S3TC_DXT1_EXT",
+        "COMPRESSED_RGBA_S3TC_DXT3_EXT",
+        "COMPRESSED_RGBA_S3TC_DXT5_EXT",
+        "COMPRESSED_RGB_S3TC_DXT1_EXT",
+        "COMPRESSED_TEXTURE_FORMATS",
+        "CONNECTING",
+        "CONSTANT_ALPHA",
+        "CONSTANT_COLOR",
+        "CONSTRAINT_ERR",
+        "CONTEXT_LOST_WEBGL",
+        "CONTROL_MASK",
+        "COUNTER_STYLE_RULE",
+        "CSS",
+        "CSS2Properties",
+        "CSSCharsetRule",
+        "CSSConditionRule",
+        "CSSCounterStyleRule",
+        "CSSFontFaceRule",
+        "CSSFontFeatureValuesRule",
+        "CSSGroupingRule",
+        "CSSImportRule",
+        "CSSKeyframeRule",
+        "CSSKeyframesRule",
+        "CSSMediaRule",
+        "CSSMozDocumentRule",
+        "CSSNameSpaceRule",
+        "CSSPageRule",
+        "CSSPrimitiveValue",
+        "CSSRule",
+        "CSSRuleList",
+        "CSSStyleDeclaration",
+        "CSSStyleRule",
+        "CSSStyleSheet",
+        "CSSSupportsRule",
+        "CSSUnknownRule",
+        "CSSValue",
+        "CSSValueList",
+        "CSSVariablesDeclaration",
+        "CSSVariablesRule",
+        "CSSViewportRule",
+        "CSS_ATTR",
+        "CSS_CM",
+        "CSS_COUNTER",
+        "CSS_CUSTOM",
+        "CSS_DEG",
+        "CSS_DIMENSION",
+        "CSS_EMS",
+        "CSS_EXS",
+        "CSS_FILTER_BLUR",
+        "CSS_FILTER_BRIGHTNESS",
+        "CSS_FILTER_CONTRAST",
+        "CSS_FILTER_CUSTOM",
+        "CSS_FILTER_DROP_SHADOW",
+        "CSS_FILTER_GRAYSCALE",
+        "CSS_FILTER_HUE_ROTATE",
+        "CSS_FILTER_INVERT",
+        "CSS_FILTER_OPACITY",
+        "CSS_FILTER_REFERENCE",
+        "CSS_FILTER_SATURATE",
+        "CSS_FILTER_SEPIA",
+        "CSS_GRAD",
+        "CSS_HZ",
+        "CSS_IDENT",
+        "CSS_IN",
+        "CSS_INHERIT",
+        "CSS_KHZ",
+        "CSS_MATRIX",
+        "CSS_MATRIX3D",
+        "CSS_MM",
+        "CSS_MS",
+        "CSS_NUMBER",
+        "CSS_PC",
+        "CSS_PERCENTAGE",
+        "CSS_PERSPECTIVE",
+        "CSS_PRIMITIVE_VALUE",
+        "CSS_PT",
+        "CSS_PX",
+        "CSS_RAD",
+        "CSS_RECT",
+        "CSS_RGBCOLOR",
+        "CSS_ROTATE",
+        "CSS_ROTATE3D",
+        "CSS_ROTATEX",
+        "CSS_ROTATEY",
+        "CSS_ROTATEZ",
+        "CSS_S",
+        "CSS_SCALE",
+        "CSS_SCALE3D",
+        "CSS_SCALEX",
+        "CSS_SCALEY",
+        "CSS_SCALEZ",
+        "CSS_SKEW",
+        "CSS_SKEWX",
+        "CSS_SKEWY",
+        "CSS_STRING",
+        "CSS_TRANSLATE",
+        "CSS_TRANSLATE3D",
+        "CSS_TRANSLATEX",
+        "CSS_TRANSLATEY",
+        "CSS_TRANSLATEZ",
+        "CSS_UNKNOWN",
+        "CSS_URI",
+        "CSS_VALUE_LIST",
+        "CSS_VH",
+        "CSS_VMAX",
+        "CSS_VMIN",
+        "CSS_VW",
+        "CULL_FACE",
+        "CULL_FACE_MODE",
+        "CURRENT_PROGRAM",
+        "CURRENT_VERTEX_ATTRIB",
+        "CUSTOM",
+        "CW",
+        "CanvasGradient",
+        "CanvasPattern",
+        "CanvasRenderingContext2D",
+        "CaretPosition",
+        "ChannelMergerNode",
+        "ChannelSplitterNode",
+        "CharacterData",
+        "ClientRect",
+        "ClientRectList",
+        "Clipboard",
+        "ClipboardEvent",
+        "CloseEvent",
+        "Collator",
+        "CommandEvent",
+        "Comment",
+        "CompositionEvent",
+        "Console",
+        "Controllers",
+        "ConvolverNode",
+        "Counter",
+        "Crypto",
+        "CryptoKey",
+        "CustomEvent",
+        "DATABASE_ERR",
+        "DATA_CLONE_ERR",
+        "DATA_ERR",
+        "DBLCLICK",
+        "DECR",
+        "DECR_WRAP",
+        "DELETE_STATUS",
+        "DEPTH_ATTACHMENT",
+        "DEPTH_BITS",
+        "DEPTH_BUFFER_BIT",
+        "DEPTH_CLEAR_VALUE",
+        "DEPTH_COMPONENT",
+        "DEPTH_COMPONENT16",
+        "DEPTH_FUNC",
+        "DEPTH_RANGE",
+        "DEPTH_STENCIL",
+        "DEPTH_STENCIL_ATTACHMENT",
+        "DEPTH_TEST",
+        "DEPTH_WRITEMASK",
+        "DIRECTION_DOWN",
+        "DIRECTION_LEFT",
+        "DIRECTION_RIGHT",
+        "DIRECTION_UP",
+        "DISABLED",
+        "DISPATCH_REQUEST_ERR",
+        "DITHER",
+        "DOCUMENT_FRAGMENT_NODE",
+        "DOCUMENT_NODE",
+        "DOCUMENT_POSITION_CONTAINED_BY",
+        "DOCUMENT_POSITION_CONTAINS",
+        "DOCUMENT_POSITION_DISCONNECTED",
+        "DOCUMENT_POSITION_FOLLOWING",
+        "DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC",
+        "DOCUMENT_POSITION_PRECEDING",
+        "DOCUMENT_TYPE_NODE",
+        "DOMCursor",
+        "DOMError",
+        "DOMException",
+        "DOMImplementation",
+        "DOMImplementationLS",
+        "DOMMatrix",
+        "DOMMatrixReadOnly",
+        "DOMParser",
+        "DOMPoint",
+        "DOMPointReadOnly",
+        "DOMQuad",
+        "DOMRect",
+        "DOMRectList",
+        "DOMRectReadOnly",
+        "DOMRequest",
+        "DOMSTRING_SIZE_ERR",
+        "DOMSettableTokenList",
+        "DOMStringList",
+        "DOMStringMap",
+        "DOMTokenList",
+        "DOMTransactionEvent",
+        "DOM_DELTA_LINE",
+        "DOM_DELTA_PAGE",
+        "DOM_DELTA_PIXEL",
+        "DOM_INPUT_METHOD_DROP",
+        "DOM_INPUT_METHOD_HANDWRITING",
+        "DOM_INPUT_METHOD_IME",
+        "DOM_INPUT_METHOD_KEYBOARD",
+        "DOM_INPUT_METHOD_MULTIMODAL",
+        "DOM_INPUT_METHOD_OPTION",
+        "DOM_INPUT_METHOD_PASTE",
+        "DOM_INPUT_METHOD_SCRIPT",
+        "DOM_INPUT_METHOD_UNKNOWN",
+        "DOM_INPUT_METHOD_VOICE",
+        "DOM_KEY_LOCATION_JOYSTICK",
+        "DOM_KEY_LOCATION_LEFT",
+        "DOM_KEY_LOCATION_MOBILE",
+        "DOM_KEY_LOCATION_NUMPAD",
+        "DOM_KEY_LOCATION_RIGHT",
+        "DOM_KEY_LOCATION_STANDARD",
+        "DOM_VK_0",
+        "DOM_VK_1",
+        "DOM_VK_2",
+        "DOM_VK_3",
+        "DOM_VK_4",
+        "DOM_VK_5",
+        "DOM_VK_6",
+        "DOM_VK_7",
+        "DOM_VK_8",
+        "DOM_VK_9",
+        "DOM_VK_A",
+        "DOM_VK_ACCEPT",
+        "DOM_VK_ADD",
+        "DOM_VK_ALT",
+        "DOM_VK_ALTGR",
+        "DOM_VK_AMPERSAND",
+        "DOM_VK_ASTERISK",
+        "DOM_VK_AT",
+        "DOM_VK_ATTN",
+        "DOM_VK_B",
+        "DOM_VK_BACKSPACE",
+        "DOM_VK_BACK_QUOTE",
+        "DOM_VK_BACK_SLASH",
+        "DOM_VK_BACK_SPACE",
+        "DOM_VK_C",
+        "DOM_VK_CANCEL",
+        "DOM_VK_CAPS_LOCK",
+        "DOM_VK_CIRCUMFLEX",
+        "DOM_VK_CLEAR",
+        "DOM_VK_CLOSE_BRACKET",
+        "DOM_VK_CLOSE_CURLY_BRACKET",
+        "DOM_VK_CLOSE_PAREN",
+        "DOM_VK_COLON",
+        "DOM_VK_COMMA",
+        "DOM_VK_CONTEXT_MENU",
+        "DOM_VK_CONTROL",
+        "DOM_VK_CONVERT",
+        "DOM_VK_CRSEL",
+        "DOM_VK_CTRL",
+        "DOM_VK_D",
+        "DOM_VK_DECIMAL",
+        "DOM_VK_DELETE",
+        "DOM_VK_DIVIDE",
+        "DOM_VK_DOLLAR",
+        "DOM_VK_DOUBLE_QUOTE",
+        "DOM_VK_DOWN",
+        "DOM_VK_E",
+        "DOM_VK_EISU",
+        "DOM_VK_END",
+        "DOM_VK_ENTER",
+        "DOM_VK_EQUALS",
+        "DOM_VK_EREOF",
+        "DOM_VK_ESCAPE",
+        "DOM_VK_EXCLAMATION",
+        "DOM_VK_EXECUTE",
+        "DOM_VK_EXSEL",
+        "DOM_VK_F",
+        "DOM_VK_F1",
+        "DOM_VK_F10",
+        "DOM_VK_F11",
+        "DOM_VK_F12",
+        "DOM_VK_F13",
+        "DOM_VK_F14",
+        "DOM_VK_F15",
+        "DOM_VK_F16",
+        "DOM_VK_F17",
+        "DOM_VK_F18",
+        "DOM_VK_F19",
+        "DOM_VK_F2",
+        "DOM_VK_F20",
+        "DOM_VK_F21",
+        "DOM_VK_F22",
+        "DOM_VK_F23",
+        "DOM_VK_F24",
+        "DOM_VK_F25",
+        "DOM_VK_F26",
+        "DOM_VK_F27",
+        "DOM_VK_F28",
+        "DOM_VK_F29",
+        "DOM_VK_F3",
+        "DOM_VK_F30",
+        "DOM_VK_F31",
+        "DOM_VK_F32",
+        "DOM_VK_F33",
+        "DOM_VK_F34",
+        "DOM_VK_F35",
+        "DOM_VK_F36",
+        "DOM_VK_F4",
+        "DOM_VK_F5",
+        "DOM_VK_F6",
+        "DOM_VK_F7",
+        "DOM_VK_F8",
+        "DOM_VK_F9",
+        "DOM_VK_FINAL",
+        "DOM_VK_FRONT",
+        "DOM_VK_G",
+        "DOM_VK_GREATER_THAN",
+        "DOM_VK_H",
+        "DOM_VK_HANGUL",
+        "DOM_VK_HANJA",
+        "DOM_VK_HASH",
+        "DOM_VK_HELP",
+        "DOM_VK_HK_TOGGLE",
+        "DOM_VK_HOME",
+        "DOM_VK_HYPHEN_MINUS",
+        "DOM_VK_I",
+        "DOM_VK_INSERT",
+        "DOM_VK_J",
+        "DOM_VK_JUNJA",
+        "DOM_VK_K",
+        "DOM_VK_KANA",
+        "DOM_VK_KANJI",
+        "DOM_VK_L",
+        "DOM_VK_LEFT",
+        "DOM_VK_LEFT_TAB",
+        "DOM_VK_LESS_THAN",
+        "DOM_VK_M",
+        "DOM_VK_META",
+        "DOM_VK_MODECHANGE",
+        "DOM_VK_MULTIPLY",
+        "DOM_VK_N",
+        "DOM_VK_NONCONVERT",
+        "DOM_VK_NUMPAD0",
+        "DOM_VK_NUMPAD1",
+        "DOM_VK_NUMPAD2",
+        "DOM_VK_NUMPAD3",
+        "DOM_VK_NUMPAD4",
+        "DOM_VK_NUMPAD5",
+        "DOM_VK_NUMPAD6",
+        "DOM_VK_NUMPAD7",
+        "DOM_VK_NUMPAD8",
+        "DOM_VK_NUMPAD9",
+        "DOM_VK_NUM_LOCK",
+        "DOM_VK_O",
+        "DOM_VK_OEM_1",
+        "DOM_VK_OEM_102",
+        "DOM_VK_OEM_2",
+        "DOM_VK_OEM_3",
+        "DOM_VK_OEM_4",
+        "DOM_VK_OEM_5",
+        "DOM_VK_OEM_6",
+        "DOM_VK_OEM_7",
+        "DOM_VK_OEM_8",
+        "DOM_VK_OEM_COMMA",
+        "DOM_VK_OEM_MINUS",
+        "DOM_VK_OEM_PERIOD",
+        "DOM_VK_OEM_PLUS",
+        "DOM_VK_OPEN_BRACKET",
+        "DOM_VK_OPEN_CURLY_BRACKET",
+        "DOM_VK_OPEN_PAREN",
+        "DOM_VK_P",
+        "DOM_VK_PA1",
+        "DOM_VK_PAGEDOWN",
+        "DOM_VK_PAGEUP",
+        "DOM_VK_PAGE_DOWN",
+        "DOM_VK_PAGE_UP",
+        "DOM_VK_PAUSE",
+        "DOM_VK_PERCENT",
+        "DOM_VK_PERIOD",
+        "DOM_VK_PIPE",
+        "DOM_VK_PLAY",
+        "DOM_VK_PLUS",
+        "DOM_VK_PRINT",
+        "DOM_VK_PRINTSCREEN",
+        "DOM_VK_PROCESSKEY",
+        "DOM_VK_PROPERITES",
+        "DOM_VK_Q",
+        "DOM_VK_QUESTION_MARK",
+        "DOM_VK_QUOTE",
+        "DOM_VK_R",
+        "DOM_VK_REDO",
+        "DOM_VK_RETURN",
+        "DOM_VK_RIGHT",
+        "DOM_VK_S",
+        "DOM_VK_SCROLL_LOCK",
+        "DOM_VK_SELECT",
+        "DOM_VK_SEMICOLON",
+        "DOM_VK_SEPARATOR",
+        "DOM_VK_SHIFT",
+        "DOM_VK_SLASH",
+        "DOM_VK_SLEEP",
+        "DOM_VK_SPACE",
+        "DOM_VK_SUBTRACT",
+        "DOM_VK_T",
+        "DOM_VK_TAB",
+        "DOM_VK_TILDE",
+        "DOM_VK_U",
+        "DOM_VK_UNDERSCORE",
+        "DOM_VK_UNDO",
+        "DOM_VK_UNICODE",
+        "DOM_VK_UP",
+        "DOM_VK_V",
+        "DOM_VK_VOLUME_DOWN",
+        "DOM_VK_VOLUME_MUTE",
+        "DOM_VK_VOLUME_UP",
+        "DOM_VK_W",
+        "DOM_VK_WIN",
+        "DOM_VK_WINDOW",
+        "DOM_VK_WIN_ICO_00",
+        "DOM_VK_WIN_ICO_CLEAR",
+        "DOM_VK_WIN_ICO_HELP",
+        "DOM_VK_WIN_OEM_ATTN",
+        "DOM_VK_WIN_OEM_AUTO",
+        "DOM_VK_WIN_OEM_BACKTAB",
+        "DOM_VK_WIN_OEM_CLEAR",
+        "DOM_VK_WIN_OEM_COPY",
+        "DOM_VK_WIN_OEM_CUSEL",
+        "DOM_VK_WIN_OEM_ENLW",
+        "DOM_VK_WIN_OEM_FINISH",
+        "DOM_VK_WIN_OEM_FJ_JISHO",
+        "DOM_VK_WIN_OEM_FJ_LOYA",
+        "DOM_VK_WIN_OEM_FJ_MASSHOU",
+        "DOM_VK_WIN_OEM_FJ_ROYA",
+        "DOM_VK_WIN_OEM_FJ_TOUROKU",
+        "DOM_VK_WIN_OEM_JUMP",
+        "DOM_VK_WIN_OEM_PA1",
+        "DOM_VK_WIN_OEM_PA2",
+        "DOM_VK_WIN_OEM_PA3",
+        "DOM_VK_WIN_OEM_RESET",
+        "DOM_VK_WIN_OEM_WSCTRL",
+        "DOM_VK_X",
+        "DOM_VK_XF86XK_ADD_FAVORITE",
+        "DOM_VK_XF86XK_APPLICATION_LEFT",
+        "DOM_VK_XF86XK_APPLICATION_RIGHT",
+        "DOM_VK_XF86XK_AUDIO_CYCLE_TRACK",
+        "DOM_VK_XF86XK_AUDIO_FORWARD",
+        "DOM_VK_XF86XK_AUDIO_LOWER_VOLUME",
+        "DOM_VK_XF86XK_AUDIO_MEDIA",
+        "DOM_VK_XF86XK_AUDIO_MUTE",
+        "DOM_VK_XF86XK_AUDIO_NEXT",
+        "DOM_VK_XF86XK_AUDIO_PAUSE",
+        "DOM_VK_XF86XK_AUDIO_PLAY",
+        "DOM_VK_XF86XK_AUDIO_PREV",
+        "DOM_VK_XF86XK_AUDIO_RAISE_VOLUME",
+        "DOM_VK_XF86XK_AUDIO_RANDOM_PLAY",
+        "DOM_VK_XF86XK_AUDIO_RECORD",
+        "DOM_VK_XF86XK_AUDIO_REPEAT",
+        "DOM_VK_XF86XK_AUDIO_REWIND",
+        "DOM_VK_XF86XK_AUDIO_STOP",
+        "DOM_VK_XF86XK_AWAY",
+        "DOM_VK_XF86XK_BACK",
+        "DOM_VK_XF86XK_BACK_FORWARD",
+        "DOM_VK_XF86XK_BATTERY",
+        "DOM_VK_XF86XK_BLUE",
+        "DOM_VK_XF86XK_BLUETOOTH",
+        "DOM_VK_XF86XK_BOOK",
+        "DOM_VK_XF86XK_BRIGHTNESS_ADJUST",
+        "DOM_VK_XF86XK_CALCULATOR",
+        "DOM_VK_XF86XK_CALENDAR",
+        "DOM_VK_XF86XK_CD",
+        "DOM_VK_XF86XK_CLOSE",
+        "DOM_VK_XF86XK_COMMUNITY",
+        "DOM_VK_XF86XK_CONTRAST_ADJUST",
+        "DOM_VK_XF86XK_COPY",
+        "DOM_VK_XF86XK_CUT",
+        "DOM_VK_XF86XK_CYCLE_ANGLE",
+        "DOM_VK_XF86XK_DISPLAY",
+        "DOM_VK_XF86XK_DOCUMENTS",
+        "DOM_VK_XF86XK_DOS",
+        "DOM_VK_XF86XK_EJECT",
+        "DOM_VK_XF86XK_EXCEL",
+        "DOM_VK_XF86XK_EXPLORER",
+        "DOM_VK_XF86XK_FAVORITES",
+        "DOM_VK_XF86XK_FINANCE",
+        "DOM_VK_XF86XK_FORWARD",
+        "DOM_VK_XF86XK_FRAME_BACK",
+        "DOM_VK_XF86XK_FRAME_FORWARD",
+        "DOM_VK_XF86XK_GAME",
+        "DOM_VK_XF86XK_GO",
+        "DOM_VK_XF86XK_GREEN",
+        "DOM_VK_XF86XK_HIBERNATE",
+        "DOM_VK_XF86XK_HISTORY",
+        "DOM_VK_XF86XK_HOME_PAGE",
+        "DOM_VK_XF86XK_HOT_LINKS",
+        "DOM_VK_XF86XK_I_TOUCH",
+        "DOM_VK_XF86XK_KBD_BRIGHTNESS_DOWN",
+        "DOM_VK_XF86XK_KBD_BRIGHTNESS_UP",
+        "DOM_VK_XF86XK_KBD_LIGHT_ON_OFF",
+        "DOM_VK_XF86XK_LAUNCH0",
+        "DOM_VK_XF86XK_LAUNCH1",
+        "DOM_VK_XF86XK_LAUNCH2",
+        "DOM_VK_XF86XK_LAUNCH3",
+        "DOM_VK_XF86XK_LAUNCH4",
+        "DOM_VK_XF86XK_LAUNCH5",
+        "DOM_VK_XF86XK_LAUNCH6",
+        "DOM_VK_XF86XK_LAUNCH7",
+        "DOM_VK_XF86XK_LAUNCH8",
+        "DOM_VK_XF86XK_LAUNCH9",
+        "DOM_VK_XF86XK_LAUNCH_A",
+        "DOM_VK_XF86XK_LAUNCH_B",
+        "DOM_VK_XF86XK_LAUNCH_C",
+        "DOM_VK_XF86XK_LAUNCH_D",
+        "DOM_VK_XF86XK_LAUNCH_E",
+        "DOM_VK_XF86XK_LAUNCH_F",
+        "DOM_VK_XF86XK_LIGHT_BULB",
+        "DOM_VK_XF86XK_LOG_OFF",
+        "DOM_VK_XF86XK_MAIL",
+        "DOM_VK_XF86XK_MAIL_FORWARD",
+        "DOM_VK_XF86XK_MARKET",
+        "DOM_VK_XF86XK_MEETING",
+        "DOM_VK_XF86XK_MEMO",
+        "DOM_VK_XF86XK_MENU_KB",
+        "DOM_VK_XF86XK_MENU_PB",
+        "DOM_VK_XF86XK_MESSENGER",
+        "DOM_VK_XF86XK_MON_BRIGHTNESS_DOWN",
+        "DOM_VK_XF86XK_MON_BRIGHTNESS_UP",
+        "DOM_VK_XF86XK_MUSIC",
+        "DOM_VK_XF86XK_MY_COMPUTER",
+        "DOM_VK_XF86XK_MY_SITES",
+        "DOM_VK_XF86XK_NEW",
+        "DOM_VK_XF86XK_NEWS",
+        "DOM_VK_XF86XK_OFFICE_HOME",
+        "DOM_VK_XF86XK_OPEN",
+        "DOM_VK_XF86XK_OPEN_URL",
+        "DOM_VK_XF86XK_OPTION",
+        "DOM_VK_XF86XK_PASTE",
+        "DOM_VK_XF86XK_PHONE",
+        "DOM_VK_XF86XK_PICTURES",
+        "DOM_VK_XF86XK_POWER_DOWN",
+        "DOM_VK_XF86XK_POWER_OFF",
+        "DOM_VK_XF86XK_RED",
+        "DOM_VK_XF86XK_REFRESH",
+        "DOM_VK_XF86XK_RELOAD",
+        "DOM_VK_XF86XK_REPLY",
+        "DOM_VK_XF86XK_ROCKER_DOWN",
+        "DOM_VK_XF86XK_ROCKER_ENTER",
+        "DOM_VK_XF86XK_ROCKER_UP",
+        "DOM_VK_XF86XK_ROTATE_WINDOWS",
+        "DOM_VK_XF86XK_ROTATION_KB",
+        "DOM_VK_XF86XK_ROTATION_PB",
+        "DOM_VK_XF86XK_SAVE",
+        "DOM_VK_XF86XK_SCREEN_SAVER",
+        "DOM_VK_XF86XK_SCROLL_CLICK",
+        "DOM_VK_XF86XK_SCROLL_DOWN",
+        "DOM_VK_XF86XK_SCROLL_UP",
+        "DOM_VK_XF86XK_SEARCH",
+        "DOM_VK_XF86XK_SEND",
+        "DOM_VK_XF86XK_SHOP",
+        "DOM_VK_XF86XK_SPELL",
+        "DOM_VK_XF86XK_SPLIT_SCREEN",
+        "DOM_VK_XF86XK_STANDBY",
+        "DOM_VK_XF86XK_START",
+        "DOM_VK_XF86XK_STOP",
+        "DOM_VK_XF86XK_SUBTITLE",
+        "DOM_VK_XF86XK_SUPPORT",
+        "DOM_VK_XF86XK_SUSPEND",
+        "DOM_VK_XF86XK_TASK_PANE",
+        "DOM_VK_XF86XK_TERMINAL",
+        "DOM_VK_XF86XK_TIME",
+        "DOM_VK_XF86XK_TOOLS",
+        "DOM_VK_XF86XK_TOP_MENU",
+        "DOM_VK_XF86XK_TO_DO_LIST",
+        "DOM_VK_XF86XK_TRAVEL",
+        "DOM_VK_XF86XK_USER1KB",
+        "DOM_VK_XF86XK_USER2KB",
+        "DOM_VK_XF86XK_USER_PB",
+        "DOM_VK_XF86XK_UWB",
+        "DOM_VK_XF86XK_VENDOR_HOME",
+        "DOM_VK_XF86XK_VIDEO",
+        "DOM_VK_XF86XK_VIEW",
+        "DOM_VK_XF86XK_WAKE_UP",
+        "DOM_VK_XF86XK_WEB_CAM",
+        "DOM_VK_XF86XK_WHEEL_BUTTON",
+        "DOM_VK_XF86XK_WLAN",
+        "DOM_VK_XF86XK_WORD",
+        "DOM_VK_XF86XK_WWW",
+        "DOM_VK_XF86XK_XFER",
+        "DOM_VK_XF86XK_YELLOW",
+        "DOM_VK_XF86XK_ZOOM_IN",
+        "DOM_VK_XF86XK_ZOOM_OUT",
+        "DOM_VK_Y",
+        "DOM_VK_Z",
+        "DOM_VK_ZOOM",
+        "DONE",
+        "DONT_CARE",
+        "DOWNLOADING",
+        "DRAGDROP",
+        "DST_ALPHA",
+        "DST_COLOR",
+        "DYNAMIC_DRAW",
+        "DataChannel",
+        "DataTransfer",
+        "DataTransferItem",
+        "DataTransferItemList",
+        "DataView",
+        "Date",
+        "DateTimeFormat",
+        "DelayNode",
+        "DesktopNotification",
+        "DesktopNotificationCenter",
+        "DeviceLightEvent",
+        "DeviceMotionEvent",
+        "DeviceOrientationEvent",
+        "DeviceProximityEvent",
+        "DeviceStorage",
+        "DeviceStorageChangeEvent",
+        "Document",
+        "DocumentFragment",
+        "DocumentType",
+        "DragEvent",
+        "DynamicsCompressorNode",
+        "E",
+        "ELEMENT_ARRAY_BUFFER",
+        "ELEMENT_ARRAY_BUFFER_BINDING",
+        "ELEMENT_NODE",
+        "EMPTY",
+        "ENCODING_ERR",
+        "ENDED",
+        "END_TO_END",
+        "END_TO_START",
+        "ENTITY_NODE",
+        "ENTITY_REFERENCE_NODE",
+        "EPSILON",
+        "EQUAL",
+        "EQUALPOWER",
+        "ERROR",
+        "EXPONENTIAL_DISTANCE",
+        "Element",
+        "ElementQuery",
+        "Entity",
+        "EntityReference",
+        "Error",
+        "ErrorEvent",
+        "EvalError",
+        "Event",
+        "EventException",
+        "EventSource",
+        "EventTarget",
+        "External",
+        "FASTEST",
+        "FIDOSDK",
+        "FILTER_ACCEPT",
+        "FILTER_INTERRUPT",
+        "FILTER_REJECT",
+        "FILTER_SKIP",
+        "FINISHED_STATE",
+        "FIRST_ORDERED_NODE_TYPE",
+        "FLOAT",
+        "FLOAT_MAT2",
+        "FLOAT_MAT3",
+        "FLOAT_MAT4",
+        "FLOAT_VEC2",
+        "FLOAT_VEC3",
+        "FLOAT_VEC4",
+        "FOCUS",
+        "FONT_FACE_RULE",
+        "FONT_FEATURE_VALUES_RULE",
+        "FRAGMENT_SHADER",
+        "FRAGMENT_SHADER_DERIVATIVE_HINT_OES",
+        "FRAMEBUFFER",
+        "FRAMEBUFFER_ATTACHMENT_OBJECT_NAME",
+        "FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE",
+        "FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE",
+        "FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL",
+        "FRAMEBUFFER_BINDING",
+        "FRAMEBUFFER_COMPLETE",
+        "FRAMEBUFFER_INCOMPLETE_ATTACHMENT",
+        "FRAMEBUFFER_INCOMPLETE_DIMENSIONS",
+        "FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT",
+        "FRAMEBUFFER_UNSUPPORTED",
+        "FRONT",
+        "FRONT_AND_BACK",
+        "FRONT_FACE",
+        "FUNC_ADD",
+        "FUNC_REVERSE_SUBTRACT",
+        "FUNC_SUBTRACT",
+        "Feed",
+        "FeedEntry",
+        "File",
+        "FileError",
+        "FileList",
+        "FileReader",
+        "FindInPage",
+        "Float32Array",
+        "Float64Array",
+        "FocusEvent",
+        "FontFace",
+        "FormData",
+        "Function",
+        "GENERATE_MIPMAP_HINT",
+        "GEQUAL",
+        "GREATER",
+        "GREEN_BITS",
+        "GainNode",
+        "Gamepad",
+        "GamepadButton",
+        "GamepadEvent",
+        "GestureEvent",
+        "HAVE_CURRENT_DATA",
+        "HAVE_ENOUGH_DATA",
+        "HAVE_FUTURE_DATA",
+        "HAVE_METADATA",
+        "HAVE_NOTHING",
+        "HEADERS_RECEIVED",
+        "HIDDEN",
+        "HIERARCHY_REQUEST_ERR",
+        "HIGHPASS",
+        "HIGHSHELF",
+        "HIGH_FLOAT",
+        "HIGH_INT",
+        "HORIZONTAL",
+        "HORIZONTAL_AXIS",
+        "HRTF",
+        "HTMLAllCollection",
+        "HTMLAnchorElement",
+        "HTMLAppletElement",
+        "HTMLAreaElement",
+        "HTMLAudioElement",
+        "HTMLBRElement",
+        "HTMLBaseElement",
+        "HTMLBaseFontElement",
+        "HTMLBlockquoteElement",
+        "HTMLBodyElement",
+        "HTMLButtonElement",
+        "HTMLCanvasElement",
+        "HTMLCollection",
+        "HTMLCommandElement",
+        "HTMLContentElement",
+        "HTMLDListElement",
+        "HTMLDataElement",
+        "HTMLDataListElement",
+        "HTMLDetailsElement",
+        "HTMLDialogElement",
+        "HTMLDirectoryElement",
+        "HTMLDivElement",
+        "HTMLDocument",
+        "HTMLElement",
+        "HTMLEmbedElement",
+        "HTMLFieldSetElement",
+        "HTMLFontElement",
+        "HTMLFormControlsCollection",
+        "HTMLFormElement",
+        "HTMLFrameElement",
+        "HTMLFrameSetElement",
+        "HTMLHRElement",
+        "HTMLHeadElement",
+        "HTMLHeadingElement",
+        "HTMLHtmlElement",
+        "HTMLIFrameElement",
+        "HTMLImageElement",
+        "HTMLInputElement",
+        "HTMLIsIndexElement",
+        "HTMLKeygenElement",
+        "HTMLLIElement",
+        "HTMLLabelElement",
+        "HTMLLegendElement",
+        "HTMLLinkElement",
+        "HTMLMapElement",
+        "HTMLMarqueeElement",
+        "HTMLMediaElement",
+        "HTMLMenuElement",
+        "HTMLMenuItemElement",
+        "HTMLMetaElement",
+        "HTMLMeterElement",
+        "HTMLModElement",
+        "HTMLOListElement",
+        "HTMLObjectElement",
+        "HTMLOptGroupElement",
+        "HTMLOptionElement",
+        "HTMLOptionsCollection",
+        "HTMLOutputElement",
+        "HTMLParagraphElement",
+        "HTMLParamElement",
+        "HTMLPictureElement",
+        "HTMLPreElement",
+        "HTMLProgressElement",
+        "HTMLPropertiesCollection",
+        "HTMLQuoteElement",
+        "HTMLScriptElement",
+        "HTMLSelectElement",
+        "HTMLShadowElement",
+        "HTMLSourceElement",
+        "HTMLSpanElement",
+        "HTMLStyleElement",
+        "HTMLTableCaptionElement",
+        "HTMLTableCellElement",
+        "HTMLTableColElement",
+        "HTMLTableElement",
+        "HTMLTableRowElement",
+        "HTMLTableSectionElement",
+        "HTMLTemplateElement",
+        "HTMLTextAreaElement",
+        "HTMLTimeElement",
+        "HTMLTitleElement",
+        "HTMLTrackElement",
+        "HTMLUListElement",
+        "HTMLUnknownElement",
+        "HTMLVideoElement",
+        "HashChangeEvent",
+        "Headers",
+        "History",
+        "ICE_CHECKING",
+        "ICE_CLOSED",
+        "ICE_COMPLETED",
+        "ICE_CONNECTED",
+        "ICE_FAILED",
+        "ICE_GATHERING",
+        "ICE_WAITING",
+        "IDBCursor",
+        "IDBCursorWithValue",
+        "IDBDatabase",
+        "IDBDatabaseException",
+        "IDBFactory",
+        "IDBFileHandle",
+        "IDBFileRequest",
+        "IDBIndex",
+        "IDBKeyRange",
+        "IDBMutableFile",
+        "IDBObjectStore",
+        "IDBOpenDBRequest",
+        "IDBRequest",
+        "IDBTransaction",
+        "IDBVersionChangeEvent",
+        "IDLE",
+        "IMPLEMENTATION_COLOR_READ_FORMAT",
+        "IMPLEMENTATION_COLOR_READ_TYPE",
+        "IMPORT_RULE",
+        "INCR",
+        "INCR_WRAP",
+        "INDEX_SIZE_ERR",
+        "INT",
+        "INT_VEC2",
+        "INT_VEC3",
+        "INT_VEC4",
+        "INUSE_ATTRIBUTE_ERR",
+        "INVALID_ACCESS_ERR",
+        "INVALID_CHARACTER_ERR",
+        "INVALID_ENUM",
+        "INVALID_EXPRESSION_ERR",
+        "INVALID_FRAMEBUFFER_OPERATION",
+        "INVALID_MODIFICATION_ERR",
+        "INVALID_NODE_TYPE_ERR",
+        "INVALID_OPERATION",
+        "INVALID_STATE_ERR",
+        "INVALID_VALUE",
+        "INVERSE_DISTANCE",
+        "INVERT",
+        "IceCandidate",
+        "Image",
+        "ImageBitmap",
+        "ImageData",
+        "Infinity",
+        "InputEvent",
+        "InputMethodContext",
+        "InstallTrigger",
+        "Int16Array",
+        "Int32Array",
+        "Int8Array",
+        "Intent",
+        "InternalError",
+        "Intl",
+        "IsSearchProviderInstalled",
+        "Iterator",
+        "JSON",
+        "KEEP",
+        "KEYDOWN",
+        "KEYFRAMES_RULE",
+        "KEYFRAME_RULE",
+        "KEYPRESS",
+        "KEYUP",
+        "KeyEvent",
+        "KeyboardEvent",
+        "LENGTHADJUST_SPACING",
+        "LENGTHADJUST_SPACINGANDGLYPHS",
+        "LENGTHADJUST_UNKNOWN",
+        "LEQUAL",
+        "LESS",
+        "LINEAR",
+        "LINEAR_DISTANCE",
+        "LINEAR_MIPMAP_LINEAR",
+        "LINEAR_MIPMAP_NEAREST",
+        "LINES",
+        "LINE_LOOP",
+        "LINE_STRIP",
+        "LINE_WIDTH",
+        "LINK_STATUS",
+        "LIVE",
+        "LN10",
+        "LN2",
+        "LOADED",
+        "LOADING",
+        "LOG10E",
+        "LOG2E",
+        "LOWPASS",
+        "LOWSHELF",
+        "LOW_FLOAT",
+        "LOW_INT",
+        "LSException",
+        "LSParserFilter",
+        "LUMINANCE",
+        "LUMINANCE_ALPHA",
+        "LocalMediaStream",
+        "Location",
+        "MAX_COMBINED_TEXTURE_IMAGE_UNITS",
+        "MAX_CUBE_MAP_TEXTURE_SIZE",
+        "MAX_FRAGMENT_UNIFORM_VECTORS",
+        "MAX_RENDERBUFFER_SIZE",
+        "MAX_SAFE_INTEGER",
+        "MAX_TEXTURE_IMAGE_UNITS",
+        "MAX_TEXTURE_MAX_ANISOTROPY_EXT",
+        "MAX_TEXTURE_SIZE",
+        "MAX_VALUE",
+        "MAX_VARYING_VECTORS",
+        "MAX_VERTEX_ATTRIBS",
+        "MAX_VERTEX_TEXTURE_IMAGE_UNITS",
+        "MAX_VERTEX_UNIFORM_VECTORS",
+        "MAX_VIEWPORT_DIMS",
+        "MEDIA_ERR_ABORTED",
+        "MEDIA_ERR_DECODE",
+        "MEDIA_ERR_ENCRYPTED",
+        "MEDIA_ERR_NETWORK",
+        "MEDIA_ERR_SRC_NOT_SUPPORTED",
+        "MEDIA_KEYERR_CLIENT",
+        "MEDIA_KEYERR_DOMAIN",
+        "MEDIA_KEYERR_HARDWARECHANGE",
+        "MEDIA_KEYERR_OUTPUT",
+        "MEDIA_KEYERR_SERVICE",
+        "MEDIA_KEYERR_UNKNOWN",
+        "MEDIA_RULE",
+        "MEDIUM_FLOAT",
+        "MEDIUM_INT",
+        "META_MASK",
+        "MIN_SAFE_INTEGER",
+        "MIN_VALUE",
+        "MIRRORED_REPEAT",
+        "MODE_ASYNCHRONOUS",
+        "MODE_SYNCHRONOUS",
+        "MODIFICATION",
+        "MOUSEDOWN",
+        "MOUSEDRAG",
+        "MOUSEMOVE",
+        "MOUSEOUT",
+        "MOUSEOVER",
+        "MOUSEUP",
+        "MOZ_KEYFRAMES_RULE",
+        "MOZ_KEYFRAME_RULE",
+        "MOZ_SOURCE_CURSOR",
+        "MOZ_SOURCE_ERASER",
+        "MOZ_SOURCE_KEYBOARD",
+        "MOZ_SOURCE_MOUSE",
+        "MOZ_SOURCE_PEN",
+        "MOZ_SOURCE_TOUCH",
+        "MOZ_SOURCE_UNKNOWN",
+        "MSGESTURE_FLAG_BEGIN",
+        "MSGESTURE_FLAG_CANCEL",
+        "MSGESTURE_FLAG_END",
+        "MSGESTURE_FLAG_INERTIA",
+        "MSGESTURE_FLAG_NONE",
+        "MSPOINTER_TYPE_MOUSE",
+        "MSPOINTER_TYPE_PEN",
+        "MSPOINTER_TYPE_TOUCH",
+        "MS_ASYNC_CALLBACK_STATUS_ASSIGN_DELEGATE",
+        "MS_ASYNC_CALLBACK_STATUS_CANCEL",
+        "MS_ASYNC_CALLBACK_STATUS_CHOOSEANY",
+        "MS_ASYNC_CALLBACK_STATUS_ERROR",
+        "MS_ASYNC_CALLBACK_STATUS_JOIN",
+        "MS_ASYNC_OP_STATUS_CANCELED",
+        "MS_ASYNC_OP_STATUS_ERROR",
+        "MS_ASYNC_OP_STATUS_SUCCESS",
+        "MS_MANIPULATION_STATE_ACTIVE",
+        "MS_MANIPULATION_STATE_CANCELLED",
+        "MS_MANIPULATION_STATE_COMMITTED",
+        "MS_MANIPULATION_STATE_DRAGGING",
+        "MS_MANIPULATION_STATE_INERTIA",
+        "MS_MANIPULATION_STATE_PRESELECT",
+        "MS_MANIPULATION_STATE_SELECTING",
+        "MS_MANIPULATION_STATE_STOPPED",
+        "MS_MEDIA_ERR_ENCRYPTED",
+        "MS_MEDIA_KEYERR_CLIENT",
+        "MS_MEDIA_KEYERR_DOMAIN",
+        "MS_MEDIA_KEYERR_HARDWARECHANGE",
+        "MS_MEDIA_KEYERR_OUTPUT",
+        "MS_MEDIA_KEYERR_SERVICE",
+        "MS_MEDIA_KEYERR_UNKNOWN",
+        "Map",
+        "Math",
+        "MediaController",
+        "MediaDevices",
+        "MediaElementAudioSourceNode",
+        "MediaEncryptedEvent",
+        "MediaError",
+        "MediaKeyError",
+        "MediaKeyEvent",
+        "MediaKeyMessageEvent",
+        "MediaKeyNeededEvent",
+        "MediaKeySession",
+        "MediaKeyStatusMap",
+        "MediaKeySystemAccess",
+        "MediaKeys",
+        "MediaList",
+        "MediaQueryList",
+        "MediaQueryListEvent",
+        "MediaRecorder",
+        "MediaSource",
+        "MediaStream",
+        "MediaStreamAudioDestinationNode",
+        "MediaStreamAudioSourceNode",
+        "MediaStreamEvent",
+        "MediaStreamTrack",
+        "MediaStreamTrackEvent",
+        "MessageChannel",
+        "MessageEvent",
+        "MessagePort",
+        "Methods",
+        "MimeType",
+        "MimeTypeArray",
+        "MouseEvent",
+        "MouseScrollEvent",
+        "MozAnimation",
+        "MozAnimationDelay",
+        "MozAnimationDirection",
+        "MozAnimationDuration",
+        "MozAnimationFillMode",
+        "MozAnimationIterationCount",
+        "MozAnimationName",
+        "MozAnimationPlayState",
+        "MozAnimationTimingFunction",
+        "MozAppearance",
+        "MozBackfaceVisibility",
+        "MozBinding",
+        "MozBorderBottomColors",
+        "MozBorderEnd",
+        "MozBorderEndColor",
+        "MozBorderEndStyle",
+        "MozBorderEndWidth",
+        "MozBorderImage",
+        "MozBorderLeftColors",
+        "MozBorderRightColors",
+        "MozBorderStart",
+        "MozBorderStartColor",
+        "MozBorderStartStyle",
+        "MozBorderStartWidth",
+        "MozBorderTopColors",
+        "MozBoxAlign",
+        "MozBoxDirection",
+        "MozBoxFlex",
+        "MozBoxOrdinalGroup",
+        "MozBoxOrient",
+        "MozBoxPack",
+        "MozBoxSizing",
+        "MozCSSKeyframeRule",
+        "MozCSSKeyframesRule",
+        "MozColumnCount",
+        "MozColumnFill",
+        "MozColumnGap",
+        "MozColumnRule",
+        "MozColumnRuleColor",
+        "MozColumnRuleStyle",
+        "MozColumnRuleWidth",
+        "MozColumnWidth",
+        "MozColumns",
+        "MozContactChangeEvent",
+        "MozFloatEdge",
+        "MozFontFeatureSettings",
+        "MozFontLanguageOverride",
+        "MozForceBrokenImageIcon",
+        "MozHyphens",
+        "MozImageRegion",
+        "MozMarginEnd",
+        "MozMarginStart",
+        "MozMmsEvent",
+        "MozMmsMessage",
+        "MozMobileMessageThread",
+        "MozOSXFontSmoothing",
+        "MozOrient",
+        "MozOutlineRadius",
+        "MozOutlineRadiusBottomleft",
+        "MozOutlineRadiusBottomright",
+        "MozOutlineRadiusTopleft",
+        "MozOutlineRadiusTopright",
+        "MozPaddingEnd",
+        "MozPaddingStart",
+        "MozPerspective",
+        "MozPerspectiveOrigin",
+        "MozPowerManager",
+        "MozSettingsEvent",
+        "MozSmsEvent",
+        "MozSmsMessage",
+        "MozStackSizing",
+        "MozTabSize",
+        "MozTextAlignLast",
+        "MozTextDecorationColor",
+        "MozTextDecorationLine",
+        "MozTextDecorationStyle",
+        "MozTextSizeAdjust",
+        "MozTransform",
+        "MozTransformOrigin",
+        "MozTransformStyle",
+        "MozTransition",
+        "MozTransitionDelay",
+        "MozTransitionDuration",
+        "MozTransitionProperty",
+        "MozTransitionTimingFunction",
+        "MozUserFocus",
+        "MozUserInput",
+        "MozUserModify",
+        "MozUserSelect",
+        "MozWindowDragging",
+        "MozWindowShadow",
+        "MutationEvent",
+        "MutationObserver",
+        "MutationRecord",
+        "NAMESPACE_ERR",
+        "NAMESPACE_RULE",
+        "NEAREST",
+        "NEAREST_MIPMAP_LINEAR",
+        "NEAREST_MIPMAP_NEAREST",
+        "NEGATIVE_INFINITY",
+        "NETWORK_EMPTY",
+        "NETWORK_ERR",
+        "NETWORK_IDLE",
+        "NETWORK_LOADED",
+        "NETWORK_LOADING",
+        "NETWORK_NO_SOURCE",
+        "NEVER",
+        "NEW",
+        "NEXT",
+        "NEXT_NO_DUPLICATE",
+        "NICEST",
+        "NODE_AFTER",
+        "NODE_BEFORE",
+        "NODE_BEFORE_AND_AFTER",
+        "NODE_INSIDE",
+        "NONE",
+        "NON_TRANSIENT_ERR",
+        "NOTATION_NODE",
+        "NOTCH",
+        "NOTEQUAL",
+        "NOT_ALLOWED_ERR",
+        "NOT_FOUND_ERR",
+        "NOT_READABLE_ERR",
+        "NOT_SUPPORTED_ERR",
+        "NO_DATA_ALLOWED_ERR",
+        "NO_ERR",
+        "NO_ERROR",
+        "NO_MODIFICATION_ALLOWED_ERR",
+        "NUMBER_TYPE",
+        "NUM_COMPRESSED_TEXTURE_FORMATS",
+        "NaN",
+        "NamedNodeMap",
+        "Navigator",
+        "NearbyLinks",
+        "NetworkInformation",
+        "Node",
+        "NodeFilter",
+        "NodeIterator",
+        "NodeList",
+        "Notation",
+        "Notification",
+        "NotifyPaintEvent",
+        "Number",
+        "NumberFormat",
+        "OBSOLETE",
+        "ONE",
+        "ONE_MINUS_CONSTANT_ALPHA",
+        "ONE_MINUS_CONSTANT_COLOR",
+        "ONE_MINUS_DST_ALPHA",
+        "ONE_MINUS_DST_COLOR",
+        "ONE_MINUS_SRC_ALPHA",
+        "ONE_MINUS_SRC_COLOR",
+        "OPEN",
+        "OPENED",
+        "OPENING",
+        "ORDERED_NODE_ITERATOR_TYPE",
+        "ORDERED_NODE_SNAPSHOT_TYPE",
+        "OUT_OF_MEMORY",
+        "Object",
+        "OfflineAudioCompletionEvent",
+        "OfflineAudioContext",
+        "OfflineResourceList",
+        "Option",
+        "OscillatorNode",
+        "OverflowEvent",
+        "PACK_ALIGNMENT",
+        "PAGE_RULE",
+        "PARSE_ERR",
+        "PATHSEG_ARC_ABS",
+        "PATHSEG_ARC_REL",
+        "PATHSEG_CLOSEPATH",
+        "PATHSEG_CURVETO_CUBIC_ABS",
+        "PATHSEG_CURVETO_CUBIC_REL",
+        "PATHSEG_CURVETO_CUBIC_SMOOTH_ABS",
+        "PATHSEG_CURVETO_CUBIC_SMOOTH_REL",
+        "PATHSEG_CURVETO_QUADRATIC_ABS",
+        "PATHSEG_CURVETO_QUADRATIC_REL",
+        "PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS",
+        "PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL",
+        "PATHSEG_LINETO_ABS",
+        "PATHSEG_LINETO_HORIZONTAL_ABS",
+        "PATHSEG_LINETO_HORIZONTAL_REL",
+        "PATHSEG_LINETO_REL",
+        "PATHSEG_LINETO_VERTICAL_ABS",
+        "PATHSEG_LINETO_VERTICAL_REL",
+        "PATHSEG_MOVETO_ABS",
+        "PATHSEG_MOVETO_REL",
+        "PATHSEG_UNKNOWN",
+        "PATH_EXISTS_ERR",
+        "PEAKING",
+        "PERMISSION_DENIED",
+        "PERSISTENT",
+        "PI",
+        "PLAYING_STATE",
+        "POINTS",
+        "POLYGON_OFFSET_FACTOR",
+        "POLYGON_OFFSET_FILL",
+        "POLYGON_OFFSET_UNITS",
+        "POSITION_UNAVAILABLE",
+        "POSITIVE_INFINITY",
+        "PREV",
+        "PREV_NO_DUPLICATE",
+        "PROCESSING_INSTRUCTION_NODE",
+        "PageChangeEvent",
+        "PageTransitionEvent",
+        "PaintRequest",
+        "PaintRequestList",
+        "PannerNode",
+        "Path2D",
+        "Performance",
+        "PerformanceEntry",
+        "PerformanceMark",
+        "PerformanceMeasure",
+        "PerformanceNavigation",
+        "PerformanceResourceTiming",
+        "PerformanceTiming",
+        "PeriodicWave",
+        "Plugin",
+        "PluginArray",
+        "PopStateEvent",
+        "PopupBlockedEvent",
+        "ProcessingInstruction",
+        "ProgressEvent",
+        "Promise",
+        "PropertyNodeList",
+        "Proxy",
+        "PushManager",
+        "PushSubscription",
+        "Q",
+        "QUOTA_ERR",
+        "QUOTA_EXCEEDED_ERR",
+        "QueryInterface",
+        "READ_ONLY",
+        "READ_ONLY_ERR",
+        "READ_WRITE",
+        "RED_BITS",
+        "REMOVAL",
+        "RENDERBUFFER",
+        "RENDERBUFFER_ALPHA_SIZE",
+        "RENDERBUFFER_BINDING",
+        "RENDERBUFFER_BLUE_SIZE",
+        "RENDERBUFFER_DEPTH_SIZE",
+        "RENDERBUFFER_GREEN_SIZE",
+        "RENDERBUFFER_HEIGHT",
+        "RENDERBUFFER_INTERNAL_FORMAT",
+        "RENDERBUFFER_RED_SIZE",
+        "RENDERBUFFER_STENCIL_SIZE",
+        "RENDERBUFFER_WIDTH",
+        "RENDERER",
+        "RENDERING_INTENT_ABSOLUTE_COLORIMETRIC",
+        "RENDERING_INTENT_AUTO",
+        "RENDERING_INTENT_PERCEPTUAL",
+        "RENDERING_INTENT_RELATIVE_COLORIMETRIC",
+        "RENDERING_INTENT_SATURATION",
+        "RENDERING_INTENT_UNKNOWN",
+        "REPEAT",
+        "REPLACE",
+        "RGB",
+        "RGB565",
+        "RGB5_A1",
+        "RGBA",
+        "RGBA4",
+        "RGBColor",
+        "ROTATION_CLOCKWISE",
+        "ROTATION_COUNTERCLOCKWISE",
+        "RTCDataChannelEvent",
+        "RTCIceCandidate",
+        "RTCPeerConnectionIceEvent",
+        "RTCRtpReceiver",
+        "RTCRtpSender",
+        "RTCSessionDescription",
+        "RTCStatsReport",
+        "RadioNodeList",
+        "Range",
+        "RangeError",
+        "RangeException",
+        "RecordErrorEvent",
+        "Rect",
+        "ReferenceError",
+        "RegExp",
+        "Request",
+        "Response",
+        "SAMPLER_2D",
+        "SAMPLER_CUBE",
+        "SAMPLES",
+        "SAMPLE_ALPHA_TO_COVERAGE",
+        "SAMPLE_BUFFERS",
+        "SAMPLE_COVERAGE",
+        "SAMPLE_COVERAGE_INVERT",
+        "SAMPLE_COVERAGE_VALUE",
+        "SAWTOOTH",
+        "SCHEDULED_STATE",
+        "SCISSOR_BOX",
+        "SCISSOR_TEST",
+        "SCROLL_PAGE_DOWN",
+        "SCROLL_PAGE_UP",
+        "SDP_ANSWER",
+        "SDP_OFFER",
+        "SDP_PRANSWER",
+        "SECURITY_ERR",
+        "SELECT",
+        "SERIALIZE_ERR",
+        "SEVERITY_ERROR",
+        "SEVERITY_FATAL_ERROR",
+        "SEVERITY_WARNING",
+        "SHADER_COMPILER",
+        "SHADER_TYPE",
+        "SHADING_LANGUAGE_VERSION",
+        "SHIFT_MASK",
+        "SHORT",
+        "SHOWING",
+        "SHOW_ALL",
+        "SHOW_ATTRIBUTE",
+        "SHOW_CDATA_SECTION",
+        "SHOW_COMMENT",
+        "SHOW_DOCUMENT",
+        "SHOW_DOCUMENT_FRAGMENT",
+        "SHOW_DOCUMENT_TYPE",
+        "SHOW_ELEMENT",
+        "SHOW_ENTITY",
+        "SHOW_ENTITY_REFERENCE",
+        "SHOW_NOTATION",
+        "SHOW_PROCESSING_INSTRUCTION",
+        "SHOW_TEXT",
+        "SINE",
+        "SOUNDFIELD",
+        "SQLException",
+        "SQRT1_2",
+        "SQRT2",
+        "SQUARE",
+        "SRC_ALPHA",
+        "SRC_ALPHA_SATURATE",
+        "SRC_COLOR",
+        "START_TO_END",
+        "START_TO_START",
+        "STATIC_DRAW",
+        "STENCIL_ATTACHMENT",
+        "STENCIL_BACK_FAIL",
+        "STENCIL_BACK_FUNC",
+        "STENCIL_BACK_PASS_DEPTH_FAIL",
+        "STENCIL_BACK_PASS_DEPTH_PASS",
+        "STENCIL_BACK_REF",
+        "STENCIL_BACK_VALUE_MASK",
+        "STENCIL_BACK_WRITEMASK",
+        "STENCIL_BITS",
+        "STENCIL_BUFFER_BIT",
+        "STENCIL_CLEAR_VALUE",
+        "STENCIL_FAIL",
+        "STENCIL_FUNC",
+        "STENCIL_INDEX",
+        "STENCIL_INDEX8",
+        "STENCIL_PASS_DEPTH_FAIL",
+        "STENCIL_PASS_DEPTH_PASS",
+        "STENCIL_REF",
+        "STENCIL_TEST",
+        "STENCIL_VALUE_MASK",
+        "STENCIL_WRITEMASK",
+        "STREAM_DRAW",
+        "STRING_TYPE",
+        "STYLE_RULE",
+        "SUBPIXEL_BITS",
+        "SUPPORTS_RULE",
+        "SVGAElement",
+        "SVGAltGlyphDefElement",
+        "SVGAltGlyphElement",
+        "SVGAltGlyphItemElement",
+        "SVGAngle",
+        "SVGAnimateColorElement",
+        "SVGAnimateElement",
+        "SVGAnimateMotionElement",
+        "SVGAnimateTransformElement",
+        "SVGAnimatedAngle",
+        "SVGAnimatedBoolean",
+        "SVGAnimatedEnumeration",
+        "SVGAnimatedInteger",
+        "SVGAnimatedLength",
+        "SVGAnimatedLengthList",
+        "SVGAnimatedNumber",
+        "SVGAnimatedNumberList",
+        "SVGAnimatedPreserveAspectRatio",
+        "SVGAnimatedRect",
+        "SVGAnimatedString",
+        "SVGAnimatedTransformList",
+        "SVGAnimationElement",
+        "SVGCircleElement",
+        "SVGClipPathElement",
+        "SVGColor",
+        "SVGComponentTransferFunctionElement",
+        "SVGCursorElement",
+        "SVGDefsElement",
+        "SVGDescElement",
+        "SVGDiscardElement",
+        "SVGDocument",
+        "SVGElement",
+        "SVGElementInstance",
+        "SVGElementInstanceList",
+        "SVGEllipseElement",
+        "SVGException",
+        "SVGFEBlendElement",
+        "SVGFEColorMatrixElement",
+        "SVGFEComponentTransferElement",
+        "SVGFECompositeElement",
+        "SVGFEConvolveMatrixElement",
+        "SVGFEDiffuseLightingElement",
+        "SVGFEDisplacementMapElement",
+        "SVGFEDistantLightElement",
+        "SVGFEDropShadowElement",
+        "SVGFEFloodElement",
+        "SVGFEFuncAElement",
+        "SVGFEFuncBElement",
+        "SVGFEFuncGElement",
+        "SVGFEFuncRElement",
+        "SVGFEGaussianBlurElement",
+        "SVGFEImageElement",
+        "SVGFEMergeElement",
+        "SVGFEMergeNodeElement",
+        "SVGFEMorphologyElement",
+        "SVGFEOffsetElement",
+        "SVGFEPointLightElement",
+        "SVGFESpecularLightingElement",
+        "SVGFESpotLightElement",
+        "SVGFETileElement",
+        "SVGFETurbulenceElement",
+        "SVGFilterElement",
+        "SVGFontElement",
+        "SVGFontFaceElement",
+        "SVGFontFaceFormatElement",
+        "SVGFontFaceNameElement",
+        "SVGFontFaceSrcElement",
+        "SVGFontFaceUriElement",
+        "SVGForeignObjectElement",
+        "SVGGElement",
+        "SVGGeometryElement",
+        "SVGGlyphElement",
+        "SVGGlyphRefElement",
+        "SVGGradientElement",
+        "SVGGraphicsElement",
+        "SVGHKernElement",
+        "SVGImageElement",
+        "SVGLength",
+        "SVGLengthList",
+        "SVGLineElement",
+        "SVGLinearGradientElement",
+        "SVGMPathElement",
+        "SVGMarkerElement",
+        "SVGMaskElement",
+        "SVGMatrix",
+        "SVGMetadataElement",
+        "SVGMissingGlyphElement",
+        "SVGNumber",
+        "SVGNumberList",
+        "SVGPaint",
+        "SVGPathElement",
+        "SVGPathSeg",
+        "SVGPathSegArcAbs",
+        "SVGPathSegArcRel",
+        "SVGPathSegClosePath",
+        "SVGPathSegCurvetoCubicAbs",
+        "SVGPathSegCurvetoCubicRel",
+        "SVGPathSegCurvetoCubicSmoothAbs",
+        "SVGPathSegCurvetoCubicSmoothRel",
+        "SVGPathSegCurvetoQuadraticAbs",
+        "SVGPathSegCurvetoQuadraticRel",
+        "SVGPathSegCurvetoQuadraticSmoothAbs",
+        "SVGPathSegCurvetoQuadraticSmoothRel",
+        "SVGPathSegLinetoAbs",
+        "SVGPathSegLinetoHorizontalAbs",
+        "SVGPathSegLinetoHorizontalRel",
+        "SVGPathSegLinetoRel",
+        "SVGPathSegLinetoVerticalAbs",
+        "SVGPathSegLinetoVerticalRel",
+        "SVGPathSegList",
+        "SVGPathSegMovetoAbs",
+        "SVGPathSegMovetoRel",
+        "SVGPatternElement",
+        "SVGPoint",
+        "SVGPointList",
+        "SVGPolygonElement",
+        "SVGPolylineElement",
+        "SVGPreserveAspectRatio",
+        "SVGRadialGradientElement",
+        "SVGRect",
+        "SVGRectElement",
+        "SVGRenderingIntent",
+        "SVGSVGElement",
+        "SVGScriptElement",
+        "SVGSetElement",
+        "SVGStopElement",
+        "SVGStringList",
+        "SVGStyleElement",
+        "SVGSwitchElement",
+        "SVGSymbolElement",
+        "SVGTRefElement",
+        "SVGTSpanElement",
+        "SVGTextContentElement",
+        "SVGTextElement",
+        "SVGTextPathElement",
+        "SVGTextPositioningElement",
+        "SVGTitleElement",
+        "SVGTransform",
+        "SVGTransformList",
+        "SVGUnitTypes",
+        "SVGUseElement",
+        "SVGVKernElement",
+        "SVGViewElement",
+        "SVGViewSpec",
+        "SVGZoomAndPan",
+        "SVGZoomEvent",
+        "SVG_ANGLETYPE_DEG",
+        "SVG_ANGLETYPE_GRAD",
+        "SVG_ANGLETYPE_RAD",
+        "SVG_ANGLETYPE_UNKNOWN",
+        "SVG_ANGLETYPE_UNSPECIFIED",
+        "SVG_CHANNEL_A",
+        "SVG_CHANNEL_B",
+        "SVG_CHANNEL_G",
+        "SVG_CHANNEL_R",
+        "SVG_CHANNEL_UNKNOWN",
+        "SVG_COLORTYPE_CURRENTCOLOR",
+        "SVG_COLORTYPE_RGBCOLOR",
+        "SVG_COLORTYPE_RGBCOLOR_ICCCOLOR",
+        "SVG_COLORTYPE_UNKNOWN",
+        "SVG_EDGEMODE_DUPLICATE",
+        "SVG_EDGEMODE_NONE",
+        "SVG_EDGEMODE_UNKNOWN",
+        "SVG_EDGEMODE_WRAP",
+        "SVG_FEBLEND_MODE_COLOR",
+        "SVG_FEBLEND_MODE_COLOR_BURN",
+        "SVG_FEBLEND_MODE_COLOR_DODGE",
+        "SVG_FEBLEND_MODE_DARKEN",
+        "SVG_FEBLEND_MODE_DIFFERENCE",
+        "SVG_FEBLEND_MODE_EXCLUSION",
+        "SVG_FEBLEND_MODE_HARD_LIGHT",
+        "SVG_FEBLEND_MODE_HUE",
+        "SVG_FEBLEND_MODE_LIGHTEN",
+        "SVG_FEBLEND_MODE_LUMINOSITY",
+        "SVG_FEBLEND_MODE_MULTIPLY",
+        "SVG_FEBLEND_MODE_NORMAL",
+        "SVG_FEBLEND_MODE_OVERLAY",
+        "SVG_FEBLEND_MODE_SATURATION",
+        "SVG_FEBLEND_MODE_SCREEN",
+        "SVG_FEBLEND_MODE_SOFT_LIGHT",
+        "SVG_FEBLEND_MODE_UNKNOWN",
+        "SVG_FECOLORMATRIX_TYPE_HUEROTATE",
+        "SVG_FECOLORMATRIX_TYPE_LUMINANCETOALPHA",
+        "SVG_FECOLORMATRIX_TYPE_MATRIX",
+        "SVG_FECOLORMATRIX_TYPE_SATURATE",
+        "SVG_FECOLORMATRIX_TYPE_UNKNOWN",
+        "SVG_FECOMPONENTTRANSFER_TYPE_DISCRETE",
+        "SVG_FECOMPONENTTRANSFER_TYPE_GAMMA",
+        "SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY",
+        "SVG_FECOMPONENTTRANSFER_TYPE_LINEAR",
+        "SVG_FECOMPONENTTRANSFER_TYPE_TABLE",
+        "SVG_FECOMPONENTTRANSFER_TYPE_UNKNOWN",
+        "SVG_FECOMPOSITE_OPERATOR_ARITHMETIC",
+        "SVG_FECOMPOSITE_OPERATOR_ATOP",
+        "SVG_FECOMPOSITE_OPERATOR_IN",
+        "SVG_FECOMPOSITE_OPERATOR_OUT",
+        "SVG_FECOMPOSITE_OPERATOR_OVER",
+        "SVG_FECOMPOSITE_OPERATOR_UNKNOWN",
+        "SVG_FECOMPOSITE_OPERATOR_XOR",
+        "SVG_INVALID_VALUE_ERR",
+        "SVG_LENGTHTYPE_CM",
+        "SVG_LENGTHTYPE_EMS",
+        "SVG_LENGTHTYPE_EXS",
+        "SVG_LENGTHTYPE_IN",
+        "SVG_LENGTHTYPE_MM",
+        "SVG_LENGTHTYPE_NUMBER",
+        "SVG_LENGTHTYPE_PC",
+        "SVG_LENGTHTYPE_PERCENTAGE",
+        "SVG_LENGTHTYPE_PT",
+        "SVG_LENGTHTYPE_PX",
+        "SVG_LENGTHTYPE_UNKNOWN",
+        "SVG_MARKERUNITS_STROKEWIDTH",
+        "SVG_MARKERUNITS_UNKNOWN",
+        "SVG_MARKERUNITS_USERSPACEONUSE",
+        "SVG_MARKER_ORIENT_ANGLE",
+        "SVG_MARKER_ORIENT_AUTO",
+        "SVG_MARKER_ORIENT_UNKNOWN",
+        "SVG_MASKTYPE_ALPHA",
+        "SVG_MASKTYPE_LUMINANCE",
+        "SVG_MATRIX_NOT_INVERTABLE",
+        "SVG_MEETORSLICE_MEET",
+        "SVG_MEETORSLICE_SLICE",
+        "SVG_MEETORSLICE_UNKNOWN",
+        "SVG_MORPHOLOGY_OPERATOR_DILATE",
+        "SVG_MORPHOLOGY_OPERATOR_ERODE",
+        "SVG_MORPHOLOGY_OPERATOR_UNKNOWN",
+        "SVG_PAINTTYPE_CURRENTCOLOR",
+        "SVG_PAINTTYPE_NONE",
+        "SVG_PAINTTYPE_RGBCOLOR",
+        "SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR",
+        "SVG_PAINTTYPE_UNKNOWN",
+        "SVG_PAINTTYPE_URI",
+        "SVG_PAINTTYPE_URI_CURRENTCOLOR",
+        "SVG_PAINTTYPE_URI_NONE",
+        "SVG_PAINTTYPE_URI_RGBCOLOR",
+        "SVG_PAINTTYPE_URI_RGBCOLOR_ICCCOLOR",
+        "SVG_PRESERVEASPECTRATIO_NONE",
+        "SVG_PRESERVEASPECTRATIO_UNKNOWN",
+        "SVG_PRESERVEASPECTRATIO_XMAXYMAX",
+        "SVG_PRESERVEASPECTRATIO_XMAXYMID",
+        "SVG_PRESERVEASPECTRATIO_XMAXYMIN",
+        "SVG_PRESERVEASPECTRATIO_XMIDYMAX",
+        "SVG_PRESERVEASPECTRATIO_XMIDYMID",
+        "SVG_PRESERVEASPECTRATIO_XMIDYMIN",
+        "SVG_PRESERVEASPECTRATIO_XMINYMAX",
+        "SVG_PRESERVEASPECTRATIO_XMINYMID",
+        "SVG_PRESERVEASPECTRATIO_XMINYMIN",
+        "SVG_SPREADMETHOD_PAD",
+        "SVG_SPREADMETHOD_REFLECT",
+        "SVG_SPREADMETHOD_REPEAT",
+        "SVG_SPREADMETHOD_UNKNOWN",
+        "SVG_STITCHTYPE_NOSTITCH",
+        "SVG_STITCHTYPE_STITCH",
+        "SVG_STITCHTYPE_UNKNOWN",
+        "SVG_TRANSFORM_MATRIX",
+        "SVG_TRANSFORM_ROTATE",
+        "SVG_TRANSFORM_SCALE",
+        "SVG_TRANSFORM_SKEWX",
+        "SVG_TRANSFORM_SKEWY",
+        "SVG_TRANSFORM_TRANSLATE",
+        "SVG_TRANSFORM_UNKNOWN",
+        "SVG_TURBULENCE_TYPE_FRACTALNOISE",
+        "SVG_TURBULENCE_TYPE_TURBULENCE",
+        "SVG_TURBULENCE_TYPE_UNKNOWN",
+        "SVG_UNIT_TYPE_OBJECTBOUNDINGBOX",
+        "SVG_UNIT_TYPE_UNKNOWN",
+        "SVG_UNIT_TYPE_USERSPACEONUSE",
+        "SVG_WRONG_TYPE_ERR",
+        "SVG_ZOOMANDPAN_DISABLE",
+        "SVG_ZOOMANDPAN_MAGNIFY",
+        "SVG_ZOOMANDPAN_UNKNOWN",
+        "SYNTAX_ERR",
+        "SavedPages",
+        "Screen",
+        "ScreenOrientation",
+        "Script",
+        "ScriptProcessorNode",
+        "ScrollAreaEvent",
+        "SecurityPolicyViolationEvent",
+        "Selection",
+        "ServiceWorker",
+        "ServiceWorkerContainer",
+        "ServiceWorkerRegistration",
+        "SessionDescription",
+        "Set",
+        "ShadowRoot",
+        "SharedWorker",
+        "SimpleGestureEvent",
+        "SpeechSynthesisEvent",
+        "SpeechSynthesisUtterance",
+        "StopIteration",
+        "Storage",
+        "StorageEvent",
+        "String",
+        "StyleSheet",
+        "StyleSheetList",
+        "SubtleCrypto",
+        "Symbol",
+        "SyntaxError",
+        "TEMPORARY",
+        "TEXTPATH_METHODTYPE_ALIGN",
+        "TEXTPATH_METHODTYPE_STRETCH",
+        "TEXTPATH_METHODTYPE_UNKNOWN",
+        "TEXTPATH_SPACINGTYPE_AUTO",
+        "TEXTPATH_SPACINGTYPE_EXACT",
+        "TEXTPATH_SPACINGTYPE_UNKNOWN",
+        "TEXTURE",
+        "TEXTURE0",
+        "TEXTURE1",
+        "TEXTURE10",
+        "TEXTURE11",
+        "TEXTURE12",
+        "TEXTURE13",
+        "TEXTURE14",
+        "TEXTURE15",
+        "TEXTURE16",
+        "TEXTURE17",
+        "TEXTURE18",
+        "TEXTURE19",
+        "TEXTURE2",
+        "TEXTURE20",
+        "TEXTURE21",
+        "TEXTURE22",
+        "TEXTURE23",
+        "TEXTURE24",
+        "TEXTURE25",
+        "TEXTURE26",
+        "TEXTURE27",
+        "TEXTURE28",
+        "TEXTURE29",
+        "TEXTURE3",
+        "TEXTURE30",
+        "TEXTURE31",
+        "TEXTURE4",
+        "TEXTURE5",
+        "TEXTURE6",
+        "TEXTURE7",
+        "TEXTURE8",
+        "TEXTURE9",
+        "TEXTURE_2D",
+        "TEXTURE_BINDING_2D",
+        "TEXTURE_BINDING_CUBE_MAP",
+        "TEXTURE_CUBE_MAP",
+        "TEXTURE_CUBE_MAP_NEGATIVE_X",
+        "TEXTURE_CUBE_MAP_NEGATIVE_Y",
+        "TEXTURE_CUBE_MAP_NEGATIVE_Z",
+        "TEXTURE_CUBE_MAP_POSITIVE_X",
+        "TEXTURE_CUBE_MAP_POSITIVE_Y",
+        "TEXTURE_CUBE_MAP_POSITIVE_Z",
+        "TEXTURE_MAG_FILTER",
+        "TEXTURE_MAX_ANISOTROPY_EXT",
+        "TEXTURE_MIN_FILTER",
+        "TEXTURE_WRAP_S",
+        "TEXTURE_WRAP_T",
+        "TEXT_NODE",
+        "TIMEOUT",
+        "TIMEOUT_ERR",
+        "TOO_LARGE_ERR",
+        "TRANSACTION_INACTIVE_ERR",
+        "TRIANGLE",
+        "TRIANGLES",
+        "TRIANGLE_FAN",
+        "TRIANGLE_STRIP",
+        "TYPE_BACK_FORWARD",
+        "TYPE_ERR",
+        "TYPE_MISMATCH_ERR",
+        "TYPE_NAVIGATE",
+        "TYPE_RELOAD",
+        "TYPE_RESERVED",
+        "Text",
+        "TextDecoder",
+        "TextEncoder",
+        "TextEvent",
+        "TextMetrics",
+        "TextTrack",
+        "TextTrackCue",
+        "TextTrackCueList",
+        "TextTrackList",
+        "TimeEvent",
+        "TimeRanges",
+        "Touch",
+        "TouchEvent",
+        "TouchList",
+        "TrackEvent",
+        "TransitionEvent",
+        "TreeWalker",
+        "TypeError",
+        "UIEvent",
+        "UNCACHED",
+        "UNKNOWN_ERR",
+        "UNKNOWN_RULE",
+        "UNMASKED_RENDERER_WEBGL",
+        "UNMASKED_VENDOR_WEBGL",
+        "UNORDERED_NODE_ITERATOR_TYPE",
+        "UNORDERED_NODE_SNAPSHOT_TYPE",
+        "UNPACK_ALIGNMENT",
+        "UNPACK_COLORSPACE_CONVERSION_WEBGL",
+        "UNPACK_FLIP_Y_WEBGL",
+        "UNPACK_PREMULTIPLY_ALPHA_WEBGL",
+        "UNSCHEDULED_STATE",
+        "UNSENT",
+        "UNSIGNED_BYTE",
+        "UNSIGNED_INT",
+        "UNSIGNED_SHORT",
+        "UNSIGNED_SHORT_4_4_4_4",
+        "UNSIGNED_SHORT_5_5_5_1",
+        "UNSIGNED_SHORT_5_6_5",
+        "UNSPECIFIED_EVENT_TYPE_ERR",
+        "UPDATEREADY",
+        "URIError",
+        "URL",
+        "URLSearchParams",
+        "URLUnencoded",
+        "URL_MISMATCH_ERR",
+        "UTC",
+        "Uint16Array",
+        "Uint32Array",
+        "Uint8Array",
+        "Uint8ClampedArray",
+        "UserMessageHandler",
+        "UserMessageHandlersNamespace",
+        "UserProximityEvent",
+        "VALIDATE_STATUS",
+        "VALIDATION_ERR",
+        "VARIABLES_RULE",
+        "VENDOR",
+        "VERSION",
+        "VERSION_CHANGE",
+        "VERSION_ERR",
+        "VERTEX_ATTRIB_ARRAY_BUFFER_BINDING",
+        "VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE",
+        "VERTEX_ATTRIB_ARRAY_ENABLED",
+        "VERTEX_ATTRIB_ARRAY_NORMALIZED",
+        "VERTEX_ATTRIB_ARRAY_POINTER",
+        "VERTEX_ATTRIB_ARRAY_SIZE",
+        "VERTEX_ATTRIB_ARRAY_STRIDE",
+        "VERTEX_ATTRIB_ARRAY_TYPE",
+        "VERTEX_SHADER",
+        "VERTICAL",
+        "VERTICAL_AXIS",
+        "VER_ERR",
+        "VIEWPORT",
+        "VIEWPORT_RULE",
+        "VTTCue",
+        "VTTRegion",
+        "ValidityState",
+        "VideoStreamTrack",
+        "WEBKIT_FILTER_RULE",
+        "WEBKIT_KEYFRAMES_RULE",
+        "WEBKIT_KEYFRAME_RULE",
+        "WEBKIT_REGION_RULE",
+        "WRONG_DOCUMENT_ERR",
+        "WaveShaperNode",
+        "WeakMap",
+        "WeakSet",
+        "WebGLActiveInfo",
+        "WebGLBuffer",
+        "WebGLContextEvent",
+        "WebGLFramebuffer",
+        "WebGLProgram",
+        "WebGLRenderbuffer",
+        "WebGLRenderingContext",
+        "WebGLShader",
+        "WebGLShaderPrecisionFormat",
+        "WebGLTexture",
+        "WebGLUniformLocation",
+        "WebGLVertexArray",
+        "WebKitAnimationEvent",
+        "WebKitBlobBuilder",
+        "WebKitCSSFilterRule",
+        "WebKitCSSFilterValue",
+        "WebKitCSSKeyframeRule",
+        "WebKitCSSKeyframesRule",
+        "WebKitCSSMatrix",
+        "WebKitCSSRegionRule",
+        "WebKitCSSTransformValue",
+        "WebKitDataCue",
+        "WebKitGamepad",
+        "WebKitMediaKeyError",
+        "WebKitMediaKeyMessageEvent",
+        "WebKitMediaKeySession",
+        "WebKitMediaKeys",
+        "WebKitMediaSource",
+        "WebKitMutationObserver",
+        "WebKitNamespace",
+        "WebKitPlaybackTargetAvailabilityEvent",
+        "WebKitPoint",
+        "WebKitShadowRoot",
+        "WebKitSourceBuffer",
+        "WebKitSourceBufferList",
+        "WebKitTransitionEvent",
+        "WebSocket",
+        "WheelEvent",
+        "Window",
+        "Worker",
+        "XMLDocument",
+        "XMLHttpRequest",
+        "XMLHttpRequestEventTarget",
+        "XMLHttpRequestException",
+        "XMLHttpRequestProgressEvent",
+        "XMLHttpRequestUpload",
+        "XMLSerializer",
+        "XMLStylesheetProcessingInstruction",
+        "XPathEvaluator",
+        "XPathException",
+        "XPathExpression",
+        "XPathNSResolver",
+        "XPathResult",
+        "XSLTProcessor",
+        "ZERO",
+        "_XD0M_",
+        "_YD0M_",
+        "__defineGetter__",
+        "__defineSetter__",
+        "__lookupGetter__",
+        "__lookupSetter__",
+        "__opera",
+        "__proto__",
+        "_browserjsran",
+        "a",
+        "aLink",
+        "abbr",
+        "abort",
+        "abs",
+        "absolute",
+        "acceleration",
+        "accelerationIncludingGravity",
+        "accelerator",
+        "accept",
+        "acceptCharset",
+        "acceptNode",
+        "accessKey",
+        "accessKeyLabel",
+        "accuracy",
+        "acos",
+        "acosh",
+        "action",
+        "actionURL",
+        "active",
+        "activeCues",
+        "activeElement",
+        "activeSourceBuffers",
+        "activeSourceCount",
+        "activeTexture",
+        "add",
+        "addBehavior",
+        "addCandidate",
+        "addColorStop",
+        "addCue",
+        "addElement",
+        "addEventListener",
+        "addFilter",
+        "addFromString",
+        "addFromUri",
+        "addIceCandidate",
+        "addImport",
+        "addListener",
+        "addNamed",
+        "addPageRule",
+        "addPath",
+        "addPointer",
+        "addRange",
+        "addRegion",
+        "addRule",
+        "addSearchEngine",
+        "addSourceBuffer",
+        "addStream",
+        "addTextTrack",
+        "addTrack",
+        "addWakeLockListener",
+        "addedNodes",
+        "additionalName",
+        "additiveSymbols",
+        "addons",
+        "adoptNode",
+        "adr",
+        "advance",
+        "alert",
+        "algorithm",
+        "align",
+        "align-content",
+        "align-items",
+        "align-self",
+        "alignContent",
+        "alignItems",
+        "alignSelf",
+        "alignmentBaseline",
+        "alinkColor",
+        "all",
+        "allowFullscreen",
+        "allowedDirections",
+        "alpha",
+        "alt",
+        "altGraphKey",
+        "altHtml",
+        "altKey",
+        "altLeft",
+        "altitude",
+        "altitudeAccuracy",
+        "amplitude",
+        "ancestorOrigins",
+        "anchor",
+        "anchorNode",
+        "anchorOffset",
+        "anchors",
+        "angle",
+        "animVal",
+        "animate",
+        "animatedInstanceRoot",
+        "animatedNormalizedPathSegList",
+        "animatedPathSegList",
+        "animatedPoints",
+        "animation",
+        "animation-delay",
+        "animation-direction",
+        "animation-duration",
+        "animation-fill-mode",
+        "animation-iteration-count",
+        "animation-name",
+        "animation-play-state",
+        "animation-timing-function",
+        "animationDelay",
+        "animationDirection",
+        "animationDuration",
+        "animationFillMode",
+        "animationIterationCount",
+        "animationName",
+        "animationPlayState",
+        "animationStartTime",
+        "animationTimingFunction",
+        "animationsPaused",
+        "anniversary",
+        "app",
+        "appCodeName",
+        "appMinorVersion",
+        "appName",
+        "appNotifications",
+        "appVersion",
+        "append",
+        "appendBuffer",
+        "appendChild",
+        "appendData",
+        "appendItem",
+        "appendMedium",
+        "appendNamed",
+        "appendRule",
+        "appendStream",
+        "appendWindowEnd",
+        "appendWindowStart",
+        "applets",
+        "applicationCache",
+        "apply",
+        "applyElement",
+        "arc",
+        "arcTo",
+        "archive",
+        "areas",
+        "arguments",
+        "arrayBuffer",
+        "asin",
+        "asinh",
+        "assert",
+        "assign",
+        "async",
+        "atEnd",
+        "atan",
+        "atan2",
+        "atanh",
+        "atob",
+        "attachEvent",
+        "attachShader",
+        "attachments",
+        "attack",
+        "attrChange",
+        "attrName",
+        "attributeName",
+        "attributeNamespace",
+        "attributes",
+        "audioTracks",
+        "autoIncrement",
+        "autobuffer",
+        "autocapitalize",
+        "autocomplete",
+        "autocorrect",
+        "autofocus",
+        "autoplay",
+        "availHeight",
+        "availLeft",
+        "availTop",
+        "availWidth",
+        "availability",
+        "available",
+        "aversion",
+        "axes",
+        "axis",
+        "azimuth",
+        "b",
+        "back",
+        "backface-visibility",
+        "backfaceVisibility",
+        "background",
+        "background-attachment",
+        "background-blend-mode",
+        "background-clip",
+        "background-color",
+        "background-image",
+        "background-origin",
+        "background-position",
+        "background-repeat",
+        "background-size",
+        "backgroundAttachment",
+        "backgroundBlendMode",
+        "backgroundClip",
+        "backgroundColor",
+        "backgroundImage",
+        "backgroundOrigin",
+        "backgroundPosition",
+        "backgroundPositionX",
+        "backgroundPositionY",
+        "backgroundRepeat",
+        "backgroundSize",
+        "badInput",
+        "balance",
+        "baseFrequencyX",
+        "baseFrequencyY",
+        "baseNode",
+        "baseOffset",
+        "baseURI",
+        "baseVal",
+        "baselineShift",
+        "battery",
+        "bday",
+        "beginElement",
+        "beginElementAt",
+        "beginPath",
+        "behavior",
+        "behaviorCookie",
+        "behaviorPart",
+        "behaviorUrns",
+        "beta",
+        "bezierCurveTo",
+        "bgColor",
+        "bgProperties",
+        "bias",
+        "big",
+        "binaryType",
+        "bind",
+        "bindAttribLocation",
+        "bindBuffer",
+        "bindFramebuffer",
+        "bindRenderbuffer",
+        "bindTexture",
+        "blendColor",
+        "blendEquation",
+        "blendEquationSeparate",
+        "blendFunc",
+        "blendFuncSeparate",
+        "blink",
+        "blob",
+        "blockDirection",
+        "blue",
+        "blur",
+        "body",
+        "bodyUsed",
+        "bold",
+        "bookmarks",
+        "booleanValue",
+        "border",
+        "border-bottom",
+        "border-bottom-color",
+        "border-bottom-left-radius",
+        "border-bottom-right-radius",
+        "border-bottom-style",
+        "border-bottom-width",
+        "border-collapse",
+        "border-color",
+        "border-image",
+        "border-image-outset",
+        "border-image-repeat",
+        "border-image-slice",
+        "border-image-source",
+        "border-image-width",
+        "border-left",
+        "border-left-color",
+        "border-left-style",
+        "border-left-width",
+        "border-radius",
+        "border-right",
+        "border-right-color",
+        "border-right-style",
+        "border-right-width",
+        "border-spacing",
+        "border-style",
+        "border-top",
+        "border-top-color",
+        "border-top-left-radius",
+        "border-top-right-radius",
+        "border-top-style",
+        "border-top-width",
+        "border-width",
+        "borderBottom",
+        "borderBottomColor",
+        "borderBottomLeftRadius",
+        "borderBottomRightRadius",
+        "borderBottomStyle",
+        "borderBottomWidth",
+        "borderCollapse",
+        "borderColor",
+        "borderColorDark",
+        "borderColorLight",
+        "borderImage",
+        "borderImageOutset",
+        "borderImageRepeat",
+        "borderImageSlice",
+        "borderImageSource",
+        "borderImageWidth",
+        "borderLeft",
+        "borderLeftColor",
+        "borderLeftStyle",
+        "borderLeftWidth",
+        "borderRadius",
+        "borderRight",
+        "borderRightColor",
+        "borderRightStyle",
+        "borderRightWidth",
+        "borderSpacing",
+        "borderStyle",
+        "borderTop",
+        "borderTopColor",
+        "borderTopLeftRadius",
+        "borderTopRightRadius",
+        "borderTopStyle",
+        "borderTopWidth",
+        "borderWidth",
+        "bottom",
+        "bottomMargin",
+        "bound",
+        "boundElements",
+        "boundingClientRect",
+        "boundingHeight",
+        "boundingLeft",
+        "boundingTop",
+        "boundingWidth",
+        "bounds",
+        "box-decoration-break",
+        "box-shadow",
+        "box-sizing",
+        "boxDecorationBreak",
+        "boxShadow",
+        "boxSizing",
+        "breakAfter",
+        "breakBefore",
+        "breakInside",
+        "browserLanguage",
+        "btoa",
+        "bubbles",
+        "buffer",
+        "bufferData",
+        "bufferDepth",
+        "bufferSize",
+        "bufferSubData",
+        "buffered",
+        "bufferedAmount",
+        "buildID",
+        "buildNumber",
+        "button",
+        "buttonID",
+        "buttons",
+        "byteLength",
+        "byteOffset",
+        "c",
+        "call",
+        "caller",
+        "canBeFormatted",
+        "canBeMounted",
+        "canBeShared",
+        "canHaveChildren",
+        "canHaveHTML",
+        "canPlayType",
+        "cancel",
+        "cancelAnimationFrame",
+        "cancelBubble",
+        "cancelScheduledValues",
+        "cancelable",
+        "candidate",
+        "canvas",
+        "caption",
+        "caption-side",
+        "captionSide",
+        "captureEvents",
+        "captureStackTrace",
+        "caretPositionFromPoint",
+        "caretRangeFromPoint",
+        "cast",
+        "catch",
+        "category",
+        "cbrt",
+        "cd",
+        "ceil",
+        "cellIndex",
+        "cellPadding",
+        "cellSpacing",
+        "cells",
+        "ch",
+        "chOff",
+        "chain",
+        "challenge",
+        "changedTouches",
+        "channel",
+        "channelCount",
+        "channelCountMode",
+        "channelInterpretation",
+        "char",
+        "charAt",
+        "charCode",
+        "charCodeAt",
+        "charIndex",
+        "characterSet",
+        "charging",
+        "chargingTime",
+        "charset",
+        "checkEnclosure",
+        "checkFramebufferStatus",
+        "checkIntersection",
+        "checkValidity",
+        "checked",
+        "childElementCount",
+        "childNodes",
+        "children",
+        "chrome",
+        "ciphertext",
+        "cite",
+        "classList",
+        "className",
+        "classid",
+        "clear",
+        "clearAttributes",
+        "clearColor",
+        "clearData",
+        "clearDepth",
+        "clearImmediate",
+        "clearInterval",
+        "clearMarks",
+        "clearMeasures",
+        "clearParameters",
+        "clearRect",
+        "clearResourceTimings",
+        "clearShadow",
+        "clearStencil",
+        "clearTimeout",
+        "clearWatch",
+        "click",
+        "clickCount",
+        "clientHeight",
+        "clientInformation",
+        "clientLeft",
+        "clientRect",
+        "clientRects",
+        "clientTop",
+        "clientWidth",
+        "clientX",
+        "clientY",
+        "clip",
+        "clip-path",
+        "clip-rule",
+        "clipBottom",
+        "clipLeft",
+        "clipPath",
+        "clipPathUnits",
+        "clipRight",
+        "clipRule",
+        "clipTop",
+        "clipboardData",
+        "clone",
+        "cloneContents",
+        "cloneNode",
+        "cloneRange",
+        "close",
+        "closePath",
+        "closed",
+        "closest",
+        "clz",
+        "clz32",
+        "cmp",
+        "code",
+        "codeBase",
+        "codePointAt",
+        "codeType",
+        "colSpan",
+        "collapse",
+        "collapseToEnd",
+        "collapseToStart",
+        "collapsed",
+        "collect",
+        "colno",
+        "color",
+        "color-interpolation",
+        "color-interpolation-filters",
+        "colorDepth",
+        "colorInterpolation",
+        "colorInterpolationFilters",
+        "colorMask",
+        "colorType",
+        "cols",
+        "columnCount",
+        "columnFill",
+        "columnGap",
+        "columnNumber",
+        "columnRule",
+        "columnRuleColor",
+        "columnRuleStyle",
+        "columnRuleWidth",
+        "columnSpan",
+        "columnWidth",
+        "columns",
+        "command",
+        "commitPreferences",
+        "commonAncestorContainer",
+        "compact",
+        "compareBoundaryPoints",
+        "compareDocumentPosition",
+        "compareEndPoints",
+        "compareNode",
+        "comparePoint",
+        "compatMode",
+        "compatible",
+        "compile",
+        "compileShader",
+        "complete",
+        "componentFromPoint",
+        "compositionEndOffset",
+        "compositionStartOffset",
+        "compressedTexImage2D",
+        "compressedTexSubImage2D",
+        "concat",
+        "conditionText",
+        "coneInnerAngle",
+        "coneOuterAngle",
+        "coneOuterGain",
+        "confirm",
+        "confirmComposition",
+        "confirmSiteSpecificTrackingException",
+        "confirmWebWideTrackingException",
+        "connect",
+        "connectEnd",
+        "connectStart",
+        "connected",
+        "connection",
+        "connectionSpeed",
+        "console",
+        "consolidate",
+        "constrictionActive",
+        "constructor",
+        "contactID",
+        "contains",
+        "containsNode",
+        "content",
+        "contentDocument",
+        "contentEditable",
+        "contentOverflow",
+        "contentScriptType",
+        "contentStyleType",
+        "contentType",
+        "contentWindow",
+        "context",
+        "contextMenu",
+        "contextmenu",
+        "continue",
+        "continuous",
+        "control",
+        "controller",
+        "controls",
+        "convertToSpecifiedUnits",
+        "cookie",
+        "cookieEnabled",
+        "coords",
+        "copyFromChannel",
+        "copyTexImage2D",
+        "copyTexSubImage2D",
+        "copyToChannel",
+        "copyWithin",
+        "correspondingElement",
+        "correspondingUseElement",
+        "cos",
+        "cosh",
+        "count",
+        "counter-increment",
+        "counter-reset",
+        "counterIncrement",
+        "counterReset",
+        "cpuClass",
+        "cpuSleepAllowed",
+        "create",
+        "createAnalyser",
+        "createAnswer",
+        "createAttribute",
+        "createAttributeNS",
+        "createBiquadFilter",
+        "createBuffer",
+        "createBufferSource",
+        "createCDATASection",
+        "createCSSStyleSheet",
+        "createCaption",
+        "createChannelMerger",
+        "createChannelSplitter",
+        "createComment",
+        "createContextualFragment",
+        "createControlRange",
+        "createConvolver",
+        "createDTMFSender",
+        "createDataChannel",
+        "createDelay",
+        "createDelayNode",
+        "createDocument",
+        "createDocumentFragment",
+        "createDocumentType",
+        "createDynamicsCompressor",
+        "createElement",
+        "createElementNS",
+        "createEntityReference",
+        "createEvent",
+        "createEventObject",
+        "createExpression",
+        "createFramebuffer",
+        "createFunction",
+        "createGain",
+        "createGainNode",
+        "createHTMLDocument",
+        "createImageBitmap",
+        "createImageData",
+        "createIndex",
+        "createJavaScriptNode",
+        "createLinearGradient",
+        "createMediaElementSource",
+        "createMediaKeys",
+        "createMediaStreamDestination",
+        "createMediaStreamSource",
+        "createMutableFile",
+        "createNSResolver",
+        "createNodeIterator",
+        "createNotification",
+        "createObjectStore",
+        "createObjectURL",
+        "createOffer",
+        "createOscillator",
+        "createPanner",
+        "createPattern",
+        "createPeriodicWave",
+        "createPopup",
+        "createProcessingInstruction",
+        "createProgram",
+        "createRadialGradient",
+        "createRange",
+        "createRangeCollection",
+        "createRenderbuffer",
+        "createSVGAngle",
+        "createSVGLength",
+        "createSVGMatrix",
+        "createSVGNumber",
+        "createSVGPathSegArcAbs",
+        "createSVGPathSegArcRel",
+        "createSVGPathSegClosePath",
+        "createSVGPathSegCurvetoCubicAbs",
+        "createSVGPathSegCurvetoCubicRel",
+        "createSVGPathSegCurvetoCubicSmoothAbs",
+        "createSVGPathSegCurvetoCubicSmoothRel",
+        "createSVGPathSegCurvetoQuadraticAbs",
+        "createSVGPathSegCurvetoQuadraticRel",
+        "createSVGPathSegCurvetoQuadraticSmoothAbs",
+        "createSVGPathSegCurvetoQuadraticSmoothRel",
+        "createSVGPathSegLinetoAbs",
+        "createSVGPathSegLinetoHorizontalAbs",
+        "createSVGPathSegLinetoHorizontalRel",
+        "createSVGPathSegLinetoRel",
+        "createSVGPathSegLinetoVerticalAbs",
+        "createSVGPathSegLinetoVerticalRel",
+        "createSVGPathSegMovetoAbs",
+        "createSVGPathSegMovetoRel",
+        "createSVGPoint",
+        "createSVGRect",
+        "createSVGTransform",
+        "createSVGTransformFromMatrix",
+        "createScriptProcessor",
+        "createSession",
+        "createShader",
+        "createShadowRoot",
+        "createStereoPanner",
+        "createStyleSheet",
+        "createTBody",
+        "createTFoot",
+        "createTHead",
+        "createTextNode",
+        "createTextRange",
+        "createTexture",
+        "createTouch",
+        "createTouchList",
+        "createTreeWalker",
+        "createWaveShaper",
+        "creationTime",
+        "crossOrigin",
+        "crypto",
+        "csi",
+        "cssFloat",
+        "cssRules",
+        "cssText",
+        "cssValueType",
+        "ctrlKey",
+        "ctrlLeft",
+        "cues",
+        "cullFace",
+        "currentNode",
+        "currentPage",
+        "currentScale",
+        "currentScript",
+        "currentSrc",
+        "currentState",
+        "currentStyle",
+        "currentTarget",
+        "currentTime",
+        "currentTranslate",
+        "currentView",
+        "cursor",
+        "curve",
+        "customError",
+        "cx",
+        "cy",
+        "d",
+        "data",
+        "dataFld",
+        "dataFormatAs",
+        "dataPageSize",
+        "dataSrc",
+        "dataTransfer",
+        "database",
+        "dataset",
+        "dateTime",
+        "db",
+        "debug",
+        "debuggerEnabled",
+        "declare",
+        "decode",
+        "decodeAudioData",
+        "decodeURI",
+        "decodeURIComponent",
+        "decrypt",
+        "default",
+        "defaultCharset",
+        "defaultChecked",
+        "defaultMuted",
+        "defaultPlaybackRate",
+        "defaultPrevented",
+        "defaultSelected",
+        "defaultStatus",
+        "defaultURL",
+        "defaultValue",
+        "defaultView",
+        "defaultstatus",
+        "defer",
+        "defineMagicFunction",
+        "defineMagicVariable",
+        "defineProperties",
+        "defineProperty",
+        "delayTime",
+        "delete",
+        "deleteBuffer",
+        "deleteCaption",
+        "deleteCell",
+        "deleteContents",
+        "deleteData",
+        "deleteDatabase",
+        "deleteFramebuffer",
+        "deleteFromDocument",
+        "deleteIndex",
+        "deleteMedium",
+        "deleteObjectStore",
+        "deleteProgram",
+        "deleteRenderbuffer",
+        "deleteRow",
+        "deleteRule",
+        "deleteShader",
+        "deleteTFoot",
+        "deleteTHead",
+        "deleteTexture",
+        "deliverChangeRecords",
+        "delivery",
+        "deliveryInfo",
+        "deliveryStatus",
+        "deliveryTimestamp",
+        "delta",
+        "deltaMode",
+        "deltaX",
+        "deltaY",
+        "deltaZ",
+        "depthFunc",
+        "depthMask",
+        "depthRange",
+        "deriveBits",
+        "deriveKey",
+        "description",
+        "deselectAll",
+        "designMode",
+        "destination",
+        "destinationURL",
+        "detach",
+        "detachEvent",
+        "detachShader",
+        "detail",
+        "detune",
+        "devicePixelRatio",
+        "deviceXDPI",
+        "deviceYDPI",
+        "diffuseConstant",
+        "digest",
+        "dimensions",
+        "dir",
+        "dirName",
+        "direction",
+        "dirxml",
+        "disable",
+        "disableVertexAttribArray",
+        "disabled",
+        "dischargingTime",
+        "disconnect",
+        "dispatchEvent",
+        "display",
+        "distanceModel",
+        "divisor",
+        "djsapi",
+        "djsproxy",
+        "doImport",
+        "doNotTrack",
+        "doScroll",
+        "doctype",
+        "document",
+        "documentElement",
+        "documentMode",
+        "documentURI",
+        "dolphin",
+        "dolphinGameCenter",
+        "dolphininfo",
+        "dolphinmeta",
+        "domComplete",
+        "domContentLoadedEventEnd",
+        "domContentLoadedEventStart",
+        "domInteractive",
+        "domLoading",
+        "domain",
+        "domainLookupEnd",
+        "domainLookupStart",
+        "dominant-baseline",
+        "dominantBaseline",
+        "done",
+        "dopplerFactor",
+        "download",
+        "dragDrop",
+        "draggable",
+        "drawArrays",
+        "drawArraysInstancedANGLE",
+        "drawCustomFocusRing",
+        "drawElements",
+        "drawElementsInstancedANGLE",
+        "drawFocusIfNeeded",
+        "drawImage",
+        "drawImageFromRect",
+        "drawSystemFocusRing",
+        "drawingBufferHeight",
+        "drawingBufferWidth",
+        "dropEffect",
+        "droppedVideoFrames",
+        "dropzone",
+        "dump",
+        "duplicate",
+        "duration",
+        "dvname",
+        "dvnum",
+        "dx",
+        "dy",
+        "dynsrc",
+        "e",
+        "edgeMode",
+        "effectAllowed",
+        "elapsedTime",
+        "elementFromPoint",
+        "elements",
+        "elevation",
+        "ellipse",
+        "email",
+        "embeds",
+        "empty",
+        "empty-cells",
+        "emptyCells",
+        "enable",
+        "enableBackground",
+        "enableStyleSheetsForSet",
+        "enableVertexAttribArray",
+        "enabled",
+        "enabledPlugin",
+        "encode",
+        "encodeURI",
+        "encodeURIComponent",
+        "encoding",
+        "encrypt",
+        "enctype",
+        "end",
+        "endContainer",
+        "endElement",
+        "endElementAt",
+        "endOfStream",
+        "endOffset",
+        "endTime",
+        "ended",
+        "endsWith",
+        "entities",
+        "entries",
+        "entryType",
+        "enumerate",
+        "enumerateEditable",
+        "error",
+        "errorCode",
+        "escape",
+        "eval",
+        "evaluate",
+        "event",
+        "eventPhase",
+        "every",
+        "exception",
+        "exec",
+        "execCommand",
+        "execCommandShowHelp",
+        "execScript",
+        "exitFullscreen",
+        "exitPointerLock",
+        "exp",
+        "expand",
+        "expandEntityReferences",
+        "expando",
+        "expansion",
+        "expiryDate",
+        "explicitOriginalTarget",
+        "expm1",
+        "exponent",
+        "exponentialRampToValueAtTime",
+        "exportKey",
+        "extend",
+        "extensions",
+        "extentNode",
+        "extentOffset",
+        "external",
+        "externalResourcesRequired",
+        "extractContents",
+        "extractable",
+        "f",
+        "face",
+        "factoryReset",
+        "fallback",
+        "familyName",
+        "farthestViewportElement",
+        "fastSeek",
+        "fatal",
+        "fetch",
+        "fetchStart",
+        "fftSize",
+        "fgColor",
+        "fileCreatedDate",
+        "fileHandle",
+        "fileModifiedDate",
+        "fileName",
+        "fileSize",
+        "fileUpdatedDate",
+        "filename",
+        "files",
+        "fill",
+        "fill-opacity",
+        "fill-rule",
+        "fillOpacity",
+        "fillRect",
+        "fillRule",
+        "fillStyle",
+        "fillText",
+        "filter",
+        "filterResX",
+        "filterResY",
+        "filterUnits",
+        "filters",
+        "find",
+        "findIndex",
+        "findRule",
+        "findText",
+        "finish",
+        "fireEvent",
+        "firstChild",
+        "firstElementChild",
+        "firstPage",
+        "fixed",
+        "flex",
+        "flex-basis",
+        "flex-direction",
+        "flex-flow",
+        "flex-grow",
+        "flex-shrink",
+        "flex-wrap",
+        "flexBasis",
+        "flexDirection",
+        "flexFlow",
+        "flexGrow",
+        "flexShrink",
+        "flexWrap",
+        "flipX",
+        "flipY",
+        "float",
+        "flood-color",
+        "flood-opacity",
+        "floodColor",
+        "floodOpacity",
+        "floor",
+        "flush",
+        "focus",
+        "focusNode",
+        "focusOffset",
+        "font",
+        "font-family",
+        "font-feature-settings",
+        "font-kerning",
+        "font-language-override",
+        "font-size",
+        "font-size-adjust",
+        "font-stretch",
+        "font-style",
+        "font-synthesis",
+        "font-variant",
+        "font-variant-alternates",
+        "font-variant-caps",
+        "font-variant-east-asian",
+        "font-variant-ligatures",
+        "font-variant-numeric",
+        "font-variant-position",
+        "font-weight",
+        "fontFamily",
+        "fontFeatureSettings",
+        "fontKerning",
+        "fontLanguageOverride",
+        "fontSize",
+        "fontSizeAdjust",
+        "fontSmoothingEnabled",
+        "fontStretch",
+        "fontStyle",
+        "fontSynthesis",
+        "fontVariant",
+        "fontVariantAlternates",
+        "fontVariantCaps",
+        "fontVariantEastAsian",
+        "fontVariantLigatures",
+        "fontVariantNumeric",
+        "fontVariantPosition",
+        "fontWeight",
+        "fontcolor",
+        "fonts",
+        "fontsize",
+        "for",
+        "forEach",
+        "forceRedraw",
+        "form",
+        "formAction",
+        "formEnctype",
+        "formMethod",
+        "formNoValidate",
+        "formTarget",
+        "format",
+        "forms",
+        "forward",
+        "fr",
+        "frame",
+        "frameBorder",
+        "frameElement",
+        "frameSpacing",
+        "framebufferRenderbuffer",
+        "framebufferTexture2D",
+        "frames",
+        "freeSpace",
+        "freeze",
+        "frequency",
+        "frequencyBinCount",
+        "from",
+        "fromCharCode",
+        "fromCodePoint",
+        "fromElement",
+        "frontFace",
+        "fround",
+        "fullScreen",
+        "fullscreenElement",
+        "fullscreenEnabled",
+        "fx",
+        "fy",
+        "gain",
+        "gamepad",
+        "gamma",
+        "genderIdentity",
+        "generateKey",
+        "generateMipmap",
+        "generateRequest",
+        "geolocation",
+        "gestureObject",
+        "get",
+        "getActiveAttrib",
+        "getActiveUniform",
+        "getAdjacentText",
+        "getAll",
+        "getAllResponseHeaders",
+        "getAsFile",
+        "getAsString",
+        "getAttachedShaders",
+        "getAttribLocation",
+        "getAttribute",
+        "getAttributeNS",
+        "getAttributeNode",
+        "getAttributeNodeNS",
+        "getAudioTracks",
+        "getBBox",
+        "getBattery",
+        "getBlob",
+        "getBookmark",
+        "getBoundingClientRect",
+        "getBufferParameter",
+        "getByteFrequencyData",
+        "getByteTimeDomainData",
+        "getCSSCanvasContext",
+        "getCTM",
+        "getCandidateWindowClientRect",
+        "getChannelData",
+        "getCharNumAtPosition",
+        "getClientRect",
+        "getClientRects",
+        "getCompositionAlternatives",
+        "getComputedStyle",
+        "getComputedTextLength",
+        "getConfiguration",
+        "getContext",
+        "getContextAttributes",
+        "getCounterValue",
+        "getCueAsHTML",
+        "getCueById",
+        "getCurrentPosition",
+        "getCurrentTime",
+        "getData",
+        "getDatabaseNames",
+        "getDate",
+        "getDay",
+        "getDefaultComputedStyle",
+        "getDestinationInsertionPoints",
+        "getDistributedNodes",
+        "getEditable",
+        "getElementById",
+        "getElementsByClassName",
+        "getElementsByName",
+        "getElementsByTagName",
+        "getElementsByTagNameNS",
+        "getEnclosureList",
+        "getEndPositionOfChar",
+        "getEntries",
+        "getEntriesByName",
+        "getEntriesByType",
+        "getError",
+        "getExtension",
+        "getExtentOfChar",
+        "getFeature",
+        "getFile",
+        "getFloat32",
+        "getFloat64",
+        "getFloatFrequencyData",
+        "getFloatTimeDomainData",
+        "getFloatValue",
+        "getFramebufferAttachmentParameter",
+        "getFrequencyResponse",
+        "getFullYear",
+        "getGamepads",
+        "getHours",
+        "getImageData",
+        "getInt16",
+        "getInt32",
+        "getInt8",
+        "getIntersectionList",
+        "getItem",
+        "getItems",
+        "getKey",
+        "getLineDash",
+        "getLocalStreams",
+        "getMarks",
+        "getMatchedCSSRules",
+        "getMeasures",
+        "getMetadata",
+        "getMilliseconds",
+        "getMinutes",
+        "getModifierState",
+        "getMonth",
+        "getNamedItem",
+        "getNamedItemNS",
+        "getNotifier",
+        "getNumberOfChars",
+        "getOverrideHistoryNavigationMode",
+        "getOverrideStyle",
+        "getOwnPropertyDescriptor",
+        "getOwnPropertyNames",
+        "getOwnPropertySymbols",
+        "getParameter",
+        "getPathSegAtLength",
+        "getPointAtLength",
+        "getPreference",
+        "getPreferenceDefault",
+        "getPresentationAttribute",
+        "getPreventDefault",
+        "getProgramInfoLog",
+        "getProgramParameter",
+        "getPropertyCSSValue",
+        "getPropertyPriority",
+        "getPropertyShorthand",
+        "getPropertyValue",
+        "getPrototypeOf",
+        "getRGBColorValue",
+        "getRandomValues",
+        "getRangeAt",
+        "getReceivers",
+        "getRectValue",
+        "getRegistration",
+        "getRemoteStreams",
+        "getRenderbufferParameter",
+        "getResponseHeader",
+        "getRoot",
+        "getRotationOfChar",
+        "getSVGDocument",
+        "getScreenCTM",
+        "getSeconds",
+        "getSelection",
+        "getSenders",
+        "getShaderInfoLog",
+        "getShaderParameter",
+        "getShaderPrecisionFormat",
+        "getShaderSource",
+        "getSimpleDuration",
+        "getSiteIcons",
+        "getSources",
+        "getSpeculativeParserUrls",
+        "getStartPositionOfChar",
+        "getStartTime",
+        "getStats",
+        "getStorageUpdates",
+        "getStreamById",
+        "getStringValue",
+        "getSubStringLength",
+        "getSubscription",
+        "getSupportedExtensions",
+        "getTexParameter",
+        "getTime",
+        "getTimezoneOffset",
+        "getTotalLength",
+        "getTrackById",
+        "getTracks",
+        "getTransformToElement",
+        "getUTCDate",
+        "getUTCDay",
+        "getUTCFullYear",
+        "getUTCHours",
+        "getUTCMilliseconds",
+        "getUTCMinutes",
+        "getUTCMonth",
+        "getUTCSeconds",
+        "getUint16",
+        "getUint32",
+        "getUint8",
+        "getUniform",
+        "getUniformLocation",
+        "getUserMedia",
+        "getValues",
+        "getVarDate",
+        "getVariableValue",
+        "getVertexAttrib",
+        "getVertexAttribOffset",
+        "getVideoPlaybackQuality",
+        "getVideoTracks",
+        "getWakeLockState",
+        "getYear",
+        "givenName",
+        "global",
+        "globalAlpha",
+        "globalCompositeOperation",
+        "glyphOrientationHorizontal",
+        "glyphOrientationVertical",
+        "glyphRef",
+        "go",
+        "gradientTransform",
+        "gradientUnits",
+        "grammars",
+        "green",
+        "group",
+        "groupCollapsed",
+        "groupEnd",
+        "hardwareConcurrency",
+        "has",
+        "hasAttribute",
+        "hasAttributeNS",
+        "hasAttributes",
+        "hasChildNodes",
+        "hasComposition",
+        "hasExtension",
+        "hasFeature",
+        "hasFocus",
+        "hasLayout",
+        "hasOwnProperty",
+        "hash",
+        "head",
+        "headers",
+        "heading",
+        "height",
+        "hidden",
+        "hide",
+        "hideFocus",
+        "high",
+        "hint",
+        "history",
+        "honorificPrefix",
+        "honorificSuffix",
+        "horizontalOverflow",
+        "host",
+        "hostname",
+        "href",
+        "hreflang",
+        "hspace",
+        "html5TagCheckInerface",
+        "htmlFor",
+        "htmlText",
+        "httpEquiv",
+        "hwTimestamp",
+        "hypot",
+        "iccId",
+        "iceConnectionState",
+        "iceGatheringState",
+        "icon",
+        "id",
+        "identifier",
+        "identity",
+        "ignoreBOM",
+        "ignoreCase",
+        "image-orientation",
+        "image-rendering",
+        "imageOrientation",
+        "imageRendering",
+        "images",
+        "ime-mode",
+        "imeMode",
+        "implementation",
+        "importKey",
+        "importNode",
+        "importStylesheet",
+        "imports",
+        "impp",
+        "imul",
+        "in1",
+        "in2",
+        "inBandMetadataTrackDispatchType",
+        "inRange",
+        "includes",
+        "incremental",
+        "indeterminate",
+        "index",
+        "indexNames",
+        "indexOf",
+        "indexedDB",
+        "inertiaDestinationX",
+        "inertiaDestinationY",
+        "info",
+        "init",
+        "initAnimationEvent",
+        "initBeforeLoadEvent",
+        "initClipboardEvent",
+        "initCloseEvent",
+        "initCommandEvent",
+        "initCompositionEvent",
+        "initCustomEvent",
+        "initData",
+        "initDeviceMotionEvent",
+        "initDeviceOrientationEvent",
+        "initDragEvent",
+        "initErrorEvent",
+        "initEvent",
+        "initFocusEvent",
+        "initGestureEvent",
+        "initHashChangeEvent",
+        "initKeyEvent",
+        "initKeyboardEvent",
+        "initMSManipulationEvent",
+        "initMessageEvent",
+        "initMouseEvent",
+        "initMouseScrollEvent",
+        "initMouseWheelEvent",
+        "initMutationEvent",
+        "initNSMouseEvent",
+        "initOverflowEvent",
+        "initPageEvent",
+        "initPageTransitionEvent",
+        "initPointerEvent",
+        "initPopStateEvent",
+        "initProgressEvent",
+        "initScrollAreaEvent",
+        "initSimpleGestureEvent",
+        "initStorageEvent",
+        "initTextEvent",
+        "initTimeEvent",
+        "initTouchEvent",
+        "initTransitionEvent",
+        "initUIEvent",
+        "initWebKitAnimationEvent",
+        "initWebKitTransitionEvent",
+        "initWebKitWheelEvent",
+        "initWheelEvent",
+        "initialTime",
+        "initialize",
+        "initiatorType",
+        "inner",
+        "innerHTML",
+        "innerHeight",
+        "innerText",
+        "innerWidth",
+        "input",
+        "inputBuffer",
+        "inputEncoding",
+        "inputMethod",
+        "insertAdjacentElement",
+        "insertAdjacentHTML",
+        "insertAdjacentText",
+        "insertBefore",
+        "insertCell",
+        "insertData",
+        "insertItemBefore",
+        "insertNode",
+        "insertRow",
+        "insertRule",
+        "instanceRoot",
+        "intercept",
+        "interimResults",
+        "internalSubset",
+        "intersectsNode",
+        "interval",
+        "invalidIteratorState",
+        "inverse",
+        "invertSelf",
+        "is",
+        "is2D",
+        "isAlternate",
+        "isArray",
+        "isBingCurrentSearchDefault",
+        "isBuffer",
+        "isCandidateWindowVisible",
+        "isChar",
+        "isCollapsed",
+        "isComposing",
+        "isContentEditable",
+        "isContentHandlerRegistered",
+        "isContextLost",
+        "isDefaultNamespace",
+        "isDisabled",
+        "isEnabled",
+        "isEqual",
+        "isEqualNode",
+        "isExtensible",
+        "isFinite",
+        "isFramebuffer",
+        "isFrozen",
+        "isGenerator",
+        "isId",
+        "isInjected",
+        "isInteger",
+        "isMap",
+        "isMultiLine",
+        "isNaN",
+        "isOpen",
+        "isPointInFill",
+        "isPointInPath",
+        "isPointInRange",
+        "isPointInStroke",
+        "isPrefAlternate",
+        "isPrimary",
+        "isProgram",
+        "isPropertyImplicit",
+        "isProtocolHandlerRegistered",
+        "isPrototypeOf",
+        "isRenderbuffer",
+        "isSafeInteger",
+        "isSameNode",
+        "isSealed",
+        "isShader",
+        "isSupported",
+        "isTextEdit",
+        "isTexture",
+        "isTrusted",
+        "isTypeSupported",
+        "isView",
+        "isolation",
+        "italics",
+        "item",
+        "itemId",
+        "itemProp",
+        "itemRef",
+        "itemScope",
+        "itemType",
+        "itemValue",
+        "iterateNext",
+        "iterator",
+        "javaEnabled",
+        "jobTitle",
+        "join",
+        "json",
+        "justify-content",
+        "justifyContent",
+        "k1",
+        "k2",
+        "k3",
+        "k4",
+        "kernelMatrix",
+        "kernelUnitLengthX",
+        "kernelUnitLengthY",
+        "kerning",
+        "key",
+        "keyCode",
+        "keyFor",
+        "keyIdentifier",
+        "keyLightEnabled",
+        "keyLocation",
+        "keyPath",
+        "keySystem",
+        "keyText",
+        "keyUsage",
+        "keys",
+        "keytype",
+        "kind",
+        "knee",
+        "label",
+        "labels",
+        "lang",
+        "language",
+        "languages",
+        "largeArcFlag",
+        "lastChild",
+        "lastElementChild",
+        "lastEventId",
+        "lastIndex",
+        "lastIndexOf",
+        "lastMatch",
+        "lastMessageSubject",
+        "lastMessageType",
+        "lastModified",
+        "lastModifiedDate",
+        "lastPage",
+        "lastParen",
+        "lastState",
+        "lastStyleSheetSet",
+        "latitude",
+        "layerX",
+        "layerY",
+        "layoutFlow",
+        "layoutGrid",
+        "layoutGridChar",
+        "layoutGridLine",
+        "layoutGridMode",
+        "layoutGridType",
+        "lbound",
+        "left",
+        "leftContext",
+        "leftMargin",
+        "length",
+        "lengthAdjust",
+        "lengthComputable",
+        "letter-spacing",
+        "letterSpacing",
+        "level",
+        "lighting-color",
+        "lightingColor",
+        "limitingConeAngle",
+        "line",
+        "line-height",
+        "lineAlign",
+        "lineBreak",
+        "lineCap",
+        "lineDashOffset",
+        "lineHeight",
+        "lineJoin",
+        "lineNumber",
+        "lineTo",
+        "lineWidth",
+        "linearRampToValueAtTime",
+        "lineno",
+        "link",
+        "linkColor",
+        "linkProgram",
+        "links",
+        "list",
+        "list-style",
+        "list-style-image",
+        "list-style-position",
+        "list-style-type",
+        "listStyle",
+        "listStyleImage",
+        "listStylePosition",
+        "listStyleType",
+        "listener",
+        "load",
+        "loadEventEnd",
+        "loadEventStart",
+        "loadTimes",
+        "loaded",
+        "localDescription",
+        "localName",
+        "localStorage",
+        "locale",
+        "localeCompare",
+        "location",
+        "locationbar",
+        "lock",
+        "lockedFile",
+        "log",
+        "log10",
+        "log1p",
+        "log2",
+        "logicalXDPI",
+        "logicalYDPI",
+        "longDesc",
+        "longitude",
+        "lookupNamespaceURI",
+        "lookupPrefix",
+        "loop",
+        "loopEnd",
+        "loopStart",
+        "looping",
+        "low",
+        "lower",
+        "lowerBound",
+        "lowerOpen",
+        "lowsrc",
+        "m11",
+        "m12",
+        "m13",
+        "m14",
+        "m21",
+        "m22",
+        "m23",
+        "m24",
+        "m31",
+        "m32",
+        "m33",
+        "m34",
+        "m41",
+        "m42",
+        "m43",
+        "m44",
+        "manifest",
+        "map",
+        "mapping",
+        "margin",
+        "margin-bottom",
+        "margin-left",
+        "margin-right",
+        "margin-top",
+        "marginBottom",
+        "marginHeight",
+        "marginLeft",
+        "marginRight",
+        "marginTop",
+        "marginWidth",
+        "mark",
+        "marker",
+        "marker-end",
+        "marker-mid",
+        "marker-offset",
+        "marker-start",
+        "markerEnd",
+        "markerHeight",
+        "markerMid",
+        "markerOffset",
+        "markerStart",
+        "markerUnits",
+        "markerWidth",
+        "marks",
+        "mask",
+        "mask-type",
+        "maskContentUnits",
+        "maskType",
+        "maskUnits",
+        "match",
+        "matchMedia",
+        "matchMedium",
+        "matches",
+        "matrix",
+        "matrixTransform",
+        "max",
+        "max-height",
+        "max-width",
+        "maxAlternatives",
+        "maxChannelCount",
+        "maxConnectionsPerServer",
+        "maxDecibels",
+        "maxDistance",
+        "maxHeight",
+        "maxLength",
+        "maxTouchPoints",
+        "maxValue",
+        "maxWidth",
+        "measure",
+        "measureText",
+        "media",
+        "mediaDevices",
+        "mediaElement",
+        "mediaGroup",
+        "mediaKeys",
+        "mediaText",
+        "meetOrSlice",
+        "memory",
+        "menubar",
+        "mergeAttributes",
+        "message",
+        "messageClass",
+        "messageHandlers",
+        "metaKey",
+        "method",
+        "mimeType",
+        "mimeTypes",
+        "min",
+        "min-height",
+        "min-width",
+        "minDecibels",
+        "minHeight",
+        "minValue",
+        "minWidth",
+        "miterLimit",
+        "mix-blend-mode",
+        "mixBlendMode",
+        "mode",
+        "modify",
+        "mount",
+        "move",
+        "moveBy",
+        "moveEnd",
+        "moveFirst",
+        "moveFocusDown",
+        "moveFocusLeft",
+        "moveFocusRight",
+        "moveFocusUp",
+        "moveNext",
+        "moveRow",
+        "moveStart",
+        "moveTo",
+        "moveToBookmark",
+        "moveToElementText",
+        "moveToPoint",
+        "mozAdd",
+        "mozAnimationStartTime",
+        "mozAnon",
+        "mozApps",
+        "mozAudioCaptured",
+        "mozAudioChannelType",
+        "mozAutoplayEnabled",
+        "mozCancelAnimationFrame",
+        "mozCancelFullScreen",
+        "mozCancelRequestAnimationFrame",
+        "mozCaptureStream",
+        "mozCaptureStreamUntilEnded",
+        "mozClearDataAt",
+        "mozContact",
+        "mozContacts",
+        "mozCreateFileHandle",
+        "mozCurrentTransform",
+        "mozCurrentTransformInverse",
+        "mozCursor",
+        "mozDash",
+        "mozDashOffset",
+        "mozDecodedFrames",
+        "mozExitPointerLock",
+        "mozFillRule",
+        "mozFragmentEnd",
+        "mozFrameDelay",
+        "mozFullScreen",
+        "mozFullScreenElement",
+        "mozFullScreenEnabled",
+        "mozGetAll",
+        "mozGetAllKeys",
+        "mozGetAsFile",
+        "mozGetDataAt",
+        "mozGetMetadata",
+        "mozGetUserMedia",
+        "mozHasAudio",
+        "mozHasItem",
+        "mozHidden",
+        "mozImageSmoothingEnabled",
+        "mozIndexedDB",
+        "mozInnerScreenX",
+        "mozInnerScreenY",
+        "mozInputSource",
+        "mozIsTextField",
+        "mozItem",
+        "mozItemCount",
+        "mozItems",
+        "mozLength",
+        "mozLockOrientation",
+        "mozMatchesSelector",
+        "mozMovementX",
+        "mozMovementY",
+        "mozOpaque",
+        "mozOrientation",
+        "mozPaintCount",
+        "mozPaintedFrames",
+        "mozParsedFrames",
+        "mozPay",
+        "mozPointerLockElement",
+        "mozPresentedFrames",
+        "mozPreservesPitch",
+        "mozPressure",
+        "mozPrintCallback",
+        "mozRTCIceCandidate",
+        "mozRTCPeerConnection",
+        "mozRTCSessionDescription",
+        "mozRemove",
+        "mozRequestAnimationFrame",
+        "mozRequestFullScreen",
+        "mozRequestPointerLock",
+        "mozSetDataAt",
+        "mozSetImageElement",
+        "mozSourceNode",
+        "mozSrcObject",
+        "mozSystem",
+        "mozTCPSocket",
+        "mozTextStyle",
+        "mozTypesAt",
+        "mozUnlockOrientation",
+        "mozUserCancelled",
+        "mozVisibilityState",
+        "msAnimation",
+        "msAnimationDelay",
+        "msAnimationDirection",
+        "msAnimationDuration",
+        "msAnimationFillMode",
+        "msAnimationIterationCount",
+        "msAnimationName",
+        "msAnimationPlayState",
+        "msAnimationStartTime",
+        "msAnimationTimingFunction",
+        "msBackfaceVisibility",
+        "msBlockProgression",
+        "msCSSOMElementFloatMetrics",
+        "msCaching",
+        "msCachingEnabled",
+        "msCancelRequestAnimationFrame",
+        "msCapsLockWarningOff",
+        "msClearImmediate",
+        "msClose",
+        "msContentZoomChaining",
+        "msContentZoomFactor",
+        "msContentZoomLimit",
+        "msContentZoomLimitMax",
+        "msContentZoomLimitMin",
+        "msContentZoomSnap",
+        "msContentZoomSnapPoints",
+        "msContentZoomSnapType",
+        "msContentZooming",
+        "msConvertURL",
+        "msCrypto",
+        "msDoNotTrack",
+        "msElementsFromPoint",
+        "msElementsFromRect",
+        "msExitFullscreen",
+        "msExtendedCode",
+        "msFillRule",
+        "msFirstPaint",
+        "msFlex",
+        "msFlexAlign",
+        "msFlexDirection",
+        "msFlexFlow",
+        "msFlexItemAlign",
+        "msFlexLinePack",
+        "msFlexNegative",
+        "msFlexOrder",
+        "msFlexPack",
+        "msFlexPositive",
+        "msFlexPreferredSize",
+        "msFlexWrap",
+        "msFlowFrom",
+        "msFlowInto",
+        "msFontFeatureSettings",
+        "msFullscreenElement",
+        "msFullscreenEnabled",
+        "msGetInputContext",
+        "msGetRegionContent",
+        "msGetUntransformedBounds",
+        "msGraphicsTrustStatus",
+        "msGridColumn",
+        "msGridColumnAlign",
+        "msGridColumnSpan",
+        "msGridColumns",
+        "msGridRow",
+        "msGridRowAlign",
+        "msGridRowSpan",
+        "msGridRows",
+        "msHidden",
+        "msHighContrastAdjust",
+        "msHyphenateLimitChars",
+        "msHyphenateLimitLines",
+        "msHyphenateLimitZone",
+        "msHyphens",
+        "msImageSmoothingEnabled",
+        "msImeAlign",
+        "msIndexedDB",
+        "msInterpolationMode",
+        "msIsStaticHTML",
+        "msKeySystem",
+        "msKeys",
+        "msLaunchUri",
+        "msLockOrientation",
+        "msManipulationViewsEnabled",
+        "msMatchMedia",
+        "msMatchesSelector",
+        "msMaxTouchPoints",
+        "msOrientation",
+        "msOverflowStyle",
+        "msPerspective",
+        "msPerspectiveOrigin",
+        "msPlayToDisabled",
+        "msPlayToPreferredSourceUri",
+        "msPlayToPrimary",
+        "msPointerEnabled",
+        "msRegionOverflow",
+        "msReleasePointerCapture",
+        "msRequestAnimationFrame",
+        "msRequestFullscreen",
+        "msSaveBlob",
+        "msSaveOrOpenBlob",
+        "msScrollChaining",
+        "msScrollLimit",
+        "msScrollLimitXMax",
+        "msScrollLimitXMin",
+        "msScrollLimitYMax",
+        "msScrollLimitYMin",
+        "msScrollRails",
+        "msScrollSnapPointsX",
+        "msScrollSnapPointsY",
+        "msScrollSnapType",
+        "msScrollSnapX",
+        "msScrollSnapY",
+        "msScrollTranslation",
+        "msSetImmediate",
+        "msSetMediaKeys",
+        "msSetPointerCapture",
+        "msTextCombineHorizontal",
+        "msTextSizeAdjust",
+        "msToBlob",
+        "msTouchAction",
+        "msTouchSelect",
+        "msTraceAsyncCallbackCompleted",
+        "msTraceAsyncCallbackStarting",
+        "msTraceAsyncOperationCompleted",
+        "msTraceAsyncOperationStarting",
+        "msTransform",
+        "msTransformOrigin",
+        "msTransformStyle",
+        "msTransition",
+        "msTransitionDelay",
+        "msTransitionDuration",
+        "msTransitionProperty",
+        "msTransitionTimingFunction",
+        "msUnlockOrientation",
+        "msUpdateAsyncCallbackRelation",
+        "msUserSelect",
+        "msVisibilityState",
+        "msWrapFlow",
+        "msWrapMargin",
+        "msWrapThrough",
+        "msWriteProfilerMark",
+        "msZoom",
+        "msZoomTo",
+        "mt",
+        "multiEntry",
+        "multiSelectionObj",
+        "multiline",
+        "multiple",
+        "multiply",
+        "multiplySelf",
+        "mutableFile",
+        "muted",
+        "n",
+        "name",
+        "nameProp",
+        "namedItem",
+        "namedRecordset",
+        "names",
+        "namespaceURI",
+        "namespaces",
+        "naturalHeight",
+        "naturalWidth",
+        "navigate",
+        "navigation",
+        "navigationMode",
+        "navigationStart",
+        "navigator",
+        "near",
+        "nearestViewportElement",
+        "negative",
+        "netscape",
+        "networkState",
+        "newScale",
+        "newTranslate",
+        "newURL",
+        "newValue",
+        "newValueSpecifiedUnits",
+        "newVersion",
+        "newhome",
+        "next",
+        "nextElementSibling",
+        "nextNode",
+        "nextPage",
+        "nextSibling",
+        "nickname",
+        "noHref",
+        "noResize",
+        "noShade",
+        "noValidate",
+        "noWrap",
+        "nodeName",
+        "nodeType",
+        "nodeValue",
+        "normalize",
+        "normalizedPathSegList",
+        "notationName",
+        "notations",
+        "note",
+        "noteGrainOn",
+        "noteOff",
+        "noteOn",
+        "now",
+        "numOctaves",
+        "number",
+        "numberOfChannels",
+        "numberOfInputs",
+        "numberOfItems",
+        "numberOfOutputs",
+        "numberValue",
+        "oMatchesSelector",
+        "object",
+        "object-fit",
+        "object-position",
+        "objectFit",
+        "objectPosition",
+        "objectStore",
+        "objectStoreNames",
+        "observe",
+        "of",
+        "offscreenBuffering",
+        "offset",
+        "offsetHeight",
+        "offsetLeft",
+        "offsetNode",
+        "offsetParent",
+        "offsetTop",
+        "offsetWidth",
+        "offsetX",
+        "offsetY",
+        "ok",
+        "oldURL",
+        "oldValue",
+        "oldVersion",
+        "olderShadowRoot",
+        "onLine",
+        "onabort",
+        "onactivate",
+        "onactive",
+        "onaddstream",
+        "onaddtrack",
+        "onafterprint",
+        "onafterscriptexecute",
+        "onafterupdate",
+        "onaudioend",
+        "onaudioprocess",
+        "onaudiostart",
+        "onautocomplete",
+        "onautocompleteerror",
+        "onbeforeactivate",
+        "onbeforecopy",
+        "onbeforecut",
+        "onbeforedeactivate",
+        "onbeforeeditfocus",
+        "onbeforepaste",
+        "onbeforeprint",
+        "onbeforescriptexecute",
+        "onbeforeunload",
+        "onbeforeupdate",
+        "onblocked",
+        "onblur",
+        "onbounce",
+        "onboundary",
+        "oncached",
+        "oncancel",
+        "oncandidatewindowhide",
+        "oncandidatewindowshow",
+        "oncandidatewindowupdate",
+        "oncanplay",
+        "oncanplaythrough",
+        "oncellchange",
+        "onchange",
+        "onchargingchange",
+        "onchargingtimechange",
+        "onchecking",
+        "onclick",
+        "onclose",
+        "oncompassneedscalibration",
+        "oncomplete",
+        "oncontextmenu",
+        "oncontrolselect",
+        "oncopy",
+        "oncuechange",
+        "oncut",
+        "ondataavailable",
+        "ondatachannel",
+        "ondatasetchanged",
+        "ondatasetcomplete",
+        "ondblclick",
+        "ondeactivate",
+        "ondevicelight",
+        "ondevicemotion",
+        "ondeviceorientation",
+        "ondeviceproximity",
+        "ondischargingtimechange",
+        "ondisplay",
+        "ondownloading",
+        "ondrag",
+        "ondragend",
+        "ondragenter",
+        "ondragleave",
+        "ondragover",
+        "ondragstart",
+        "ondrop",
+        "ondurationchange",
+        "onemptied",
+        "onencrypted",
+        "onend",
+        "onended",
+        "onenter",
+        "onerror",
+        "onerrorupdate",
+        "onexit",
+        "onfilterchange",
+        "onfinish",
+        "onfocus",
+        "onfocusin",
+        "onfocusout",
+        "onfullscreenchange",
+        "onfullscreenerror",
+        "ongesturechange",
+        "ongestureend",
+        "ongesturestart",
+        "ongotpointercapture",
+        "onhashchange",
+        "onhelp",
+        "onicecandidate",
+        "oniceconnectionstatechange",
+        "oninactive",
+        "oninput",
+        "oninvalid",
+        "onkeydown",
+        "onkeypress",
+        "onkeyup",
+        "onlanguagechange",
+        "onlayoutcomplete",
+        "onlevelchange",
+        "onload",
+        "onloadeddata",
+        "onloadedmetadata",
+        "onloadend",
+        "onloadstart",
+        "onlosecapture",
+        "onlostpointercapture",
+        "only",
+        "onmark",
+        "onmessage",
+        "onmousedown",
+        "onmouseenter",
+        "onmouseleave",
+        "onmousemove",
+        "onmouseout",
+        "onmouseover",
+        "onmouseup",
+        "onmousewheel",
+        "onmove",
+        "onmoveend",
+        "onmovestart",
+        "onmozfullscreenchange",
+        "onmozfullscreenerror",
+        "onmozorientationchange",
+        "onmozpointerlockchange",
+        "onmozpointerlockerror",
+        "onmscontentzoom",
+        "onmsfullscreenchange",
+        "onmsfullscreenerror",
+        "onmsgesturechange",
+        "onmsgesturedoubletap",
+        "onmsgestureend",
+        "onmsgesturehold",
+        "onmsgesturestart",
+        "onmsgesturetap",
+        "onmsgotpointercapture",
+        "onmsinertiastart",
+        "onmslostpointercapture",
+        "onmsmanipulationstatechanged",
+        "onmsneedkey",
+        "onmsorientationchange",
+        "onmspointercancel",
+        "onmspointerdown",
+        "onmspointerenter",
+        "onmspointerhover",
+        "onmspointerleave",
+        "onmspointermove",
+        "onmspointerout",
+        "onmspointerover",
+        "onmspointerup",
+        "onmssitemodejumplistitemremoved",
+        "onmsthumbnailclick",
+        "onnegotiationneeded",
+        "onnomatch",
+        "onnoupdate",
+        "onobsolete",
+        "onoffline",
+        "ononline",
+        "onopen",
+        "onorientationchange",
+        "onpagechange",
+        "onpagehide",
+        "onpageshow",
+        "onpaste",
+        "onpause",
+        "onplay",
+        "onplaying",
+        "onpluginstreamstart",
+        "onpointercancel",
+        "onpointerdown",
+        "onpointerenter",
+        "onpointerleave",
+        "onpointerlockchange",
+        "onpointerlockerror",
+        "onpointermove",
+        "onpointerout",
+        "onpointerover",
+        "onpointerup",
+        "onpopstate",
+        "onprogress",
+        "onpropertychange",
+        "onratechange",
+        "onreadystatechange",
+        "onremovestream",
+        "onremovetrack",
+        "onreset",
+        "onresize",
+        "onresizeend",
+        "onresizestart",
+        "onresourcetimingbufferfull",
+        "onresult",
+        "onresume",
+        "onrowenter",
+        "onrowexit",
+        "onrowsdelete",
+        "onrowsinserted",
+        "onscroll",
+        "onsearch",
+        "onseeked",
+        "onseeking",
+        "onselect",
+        "onselectionchange",
+        "onselectstart",
+        "onshow",
+        "onsignalingstatechange",
+        "onsoundend",
+        "onsoundstart",
+        "onspeechend",
+        "onspeechstart",
+        "onstalled",
+        "onstart",
+        "onstatechange",
+        "onstop",
+        "onstorage",
+        "onstoragecommit",
+        "onsubmit",
+        "onsuccess",
+        "onsuspend",
+        "ontextinput",
+        "ontimeout",
+        "ontimeupdate",
+        "ontoggle",
+        "ontouchcancel",
+        "ontouchend",
+        "ontouchmove",
+        "ontouchstart",
+        "ontransitionend",
+        "onunload",
+        "onupdateready",
+        "onupgradeneeded",
+        "onuserproximity",
+        "onversionchange",
+        "onvoiceschanged",
+        "onvolumechange",
+        "onwaiting",
+        "onwarning",
+        "onwebkitanimationend",
+        "onwebkitanimationiteration",
+        "onwebkitanimationstart",
+        "onwebkitcurrentplaybacktargetiswirelesschanged",
+        "onwebkitfullscreenchange",
+        "onwebkitfullscreenerror",
+        "onwebkitkeyadded",
+        "onwebkitkeyerror",
+        "onwebkitkeymessage",
+        "onwebkitneedkey",
+        "onwebkitorientationchange",
+        "onwebkitplaybacktargetavailabilitychanged",
+        "onwebkitpointerlockchange",
+        "onwebkitpointerlockerror",
+        "onwebkitresourcetimingbufferfull",
+        "onwebkittransitionend",
+        "onwheel",
+        "onzoom",
+        "opacity",
+        "open",
+        "openCursor",
+        "openDatabase",
+        "openKeyCursor",
+        "opener",
+        "opera",
+        "operationType",
+        "operator",
+        "opr",
+        "optimum",
+        "options",
+        "order",
+        "orderX",
+        "orderY",
+        "ordered",
+        "org",
+        "orient",
+        "orientAngle",
+        "orientType",
+        "orientation",
+        "origin",
+        "originalTarget",
+        "orphans",
+        "oscpu",
+        "outerHTML",
+        "outerHeight",
+        "outerText",
+        "outerWidth",
+        "outline",
+        "outline-color",
+        "outline-offset",
+        "outline-style",
+        "outline-width",
+        "outlineColor",
+        "outlineOffset",
+        "outlineStyle",
+        "outlineWidth",
+        "outputBuffer",
+        "overflow",
+        "overflow-x",
+        "overflow-y",
+        "overflowX",
+        "overflowY",
+        "overrideMimeType",
+        "oversample",
+        "ownerDocument",
+        "ownerElement",
+        "ownerNode",
+        "ownerRule",
+        "ownerSVGElement",
+        "owningElement",
+        "p1",
+        "p2",
+        "p3",
+        "p4",
+        "pad",
+        "padding",
+        "padding-bottom",
+        "padding-left",
+        "padding-right",
+        "padding-top",
+        "paddingBottom",
+        "paddingLeft",
+        "paddingRight",
+        "paddingTop",
+        "page",
+        "page-break-after",
+        "page-break-before",
+        "page-break-inside",
+        "pageBreakAfter",
+        "pageBreakBefore",
+        "pageBreakInside",
+        "pageCount",
+        "pageX",
+        "pageXOffset",
+        "pageY",
+        "pageYOffset",
+        "pages",
+        "paint-order",
+        "paintOrder",
+        "paintRequests",
+        "paintType",
+        "palette",
+        "panningModel",
+        "parent",
+        "parentElement",
+        "parentNode",
+        "parentRule",
+        "parentStyleSheet",
+        "parentTextEdit",
+        "parentWindow",
+        "parse",
+        "parseFloat",
+        "parseFromString",
+        "parseInt",
+        "participants",
+        "password",
+        "pasteHTML",
+        "path",
+        "pathLength",
+        "pathSegList",
+        "pathSegType",
+        "pathSegTypeAsLetter",
+        "pathname",
+        "pattern",
+        "patternContentUnits",
+        "patternMismatch",
+        "patternTransform",
+        "patternUnits",
+        "pause",
+        "pauseAnimations",
+        "pauseOnExit",
+        "paused",
+        "pending",
+        "performance",
+        "permission",
+        "persisted",
+        "personalbar",
+        "perspective",
+        "perspective-origin",
+        "perspectiveOrigin",
+        "phoneticFamilyName",
+        "phoneticGivenName",
+        "photo",
+        "ping",
+        "pitch",
+        "pixelBottom",
+        "pixelDepth",
+        "pixelHeight",
+        "pixelLeft",
+        "pixelRight",
+        "pixelStorei",
+        "pixelTop",
+        "pixelUnitToMillimeterX",
+        "pixelUnitToMillimeterY",
+        "pixelWidth",
+        "placeholder",
+        "platform",
+        "play",
+        "playbackRate",
+        "playbackState",
+        "playbackTime",
+        "played",
+        "plugins",
+        "pluginspage",
+        "pname",
+        "pointer-events",
+        "pointerBeforeReferenceNode",
+        "pointerEnabled",
+        "pointerEvents",
+        "pointerId",
+        "pointerLockElement",
+        "pointerType",
+        "points",
+        "pointsAtX",
+        "pointsAtY",
+        "pointsAtZ",
+        "polygonOffset",
+        "pop",
+        "popupWindowFeatures",
+        "popupWindowName",
+        "popupWindowURI",
+        "port",
+        "port1",
+        "port2",
+        "ports",
+        "posBottom",
+        "posHeight",
+        "posLeft",
+        "posRight",
+        "posTop",
+        "posWidth",
+        "position",
+        "positionAlign",
+        "postError",
+        "postMessage",
+        "poster",
+        "pow",
+        "powerOff",
+        "preMultiplySelf",
+        "precision",
+        "preferredStyleSheetSet",
+        "preferredStylesheetSet",
+        "prefix",
+        "preload",
+        "preserveAlpha",
+        "preserveAspectRatio",
+        "preserveAspectRatioString",
+        "pressed",
+        "pressure",
+        "prevValue",
+        "preventDefault",
+        "preventExtensions",
+        "previousElementSibling",
+        "previousNode",
+        "previousPage",
+        "previousScale",
+        "previousSibling",
+        "previousTranslate",
+        "primaryKey",
+        "primitiveType",
+        "primitiveUnits",
+        "principals",
+        "print",
+        "privateKey",
+        "probablySupportsContext",
+        "process",
+        "processIceMessage",
+        "product",
+        "productSub",
+        "profile",
+        "profileEnd",
+        "profiles",
+        "prompt",
+        "properties",
+        "propertyIsEnumerable",
+        "propertyName",
+        "protocol",
+        "protocolLong",
+        "prototype",
+        "pseudoClass",
+        "pseudoElement",
+        "publicId",
+        "publicKey",
+        "published",
+        "push",
+        "pushNotification",
+        "pushState",
+        "put",
+        "putImageData",
+        "quadraticCurveTo",
+        "qualifier",
+        "queryCommandEnabled",
+        "queryCommandIndeterm",
+        "queryCommandState",
+        "queryCommandSupported",
+        "queryCommandText",
+        "queryCommandValue",
+        "querySelector",
+        "querySelectorAll",
+        "quote",
+        "quotes",
+        "r",
+        "r1",
+        "r2",
+        "race",
+        "radiogroup",
+        "radiusX",
+        "radiusY",
+        "random",
+        "range",
+        "rangeCount",
+        "rangeMax",
+        "rangeMin",
+        "rangeOffset",
+        "rangeOverflow",
+        "rangeParent",
+        "rangeUnderflow",
+        "rate",
+        "ratio",
+        "raw",
+        "read",
+        "readAsArrayBuffer",
+        "readAsBinaryString",
+        "readAsBlob",
+        "readAsDataURL",
+        "readAsText",
+        "readOnly",
+        "readPixels",
+        "readReportRequested",
+        "readyState",
+        "reason",
+        "reboot",
+        "receiver",
+        "receivers",
+        "recordNumber",
+        "recordset",
+        "rect",
+        "red",
+        "redirectCount",
+        "redirectEnd",
+        "redirectStart",
+        "reduce",
+        "reduceRight",
+        "reduction",
+        "refDistance",
+        "refX",
+        "refY",
+        "referenceNode",
+        "referrer",
+        "refresh",
+        "region",
+        "regionAnchorX",
+        "regionAnchorY",
+        "regionId",
+        "regions",
+        "register",
+        "registerContentHandler",
+        "registerElement",
+        "registerProtocolHandler",
+        "reject",
+        "rel",
+        "relList",
+        "relatedNode",
+        "relatedTarget",
+        "release",
+        "releaseCapture",
+        "releaseEvents",
+        "releasePointerCapture",
+        "releaseShaderCompiler",
+        "reliable",
+        "reload",
+        "remainingSpace",
+        "remoteDescription",
+        "remove",
+        "removeAllRanges",
+        "removeAttribute",
+        "removeAttributeNS",
+        "removeAttributeNode",
+        "removeBehavior",
+        "removeChild",
+        "removeCue",
+        "removeEventListener",
+        "removeFilter",
+        "removeImport",
+        "removeItem",
+        "removeListener",
+        "removeNamedItem",
+        "removeNamedItemNS",
+        "removeNode",
+        "removeParameter",
+        "removeProperty",
+        "removeRange",
+        "removeRegion",
+        "removeRule",
+        "removeSiteSpecificTrackingException",
+        "removeSourceBuffer",
+        "removeStream",
+        "removeTrack",
+        "removeVariable",
+        "removeWakeLockListener",
+        "removeWebWideTrackingException",
+        "removedNodes",
+        "renderbufferStorage",
+        "renderedBuffer",
+        "renderingMode",
+        "repeat",
+        "replace",
+        "replaceAdjacentText",
+        "replaceChild",
+        "replaceData",
+        "replaceId",
+        "replaceItem",
+        "replaceNode",
+        "replaceState",
+        "replaceTrack",
+        "replaceWholeText",
+        "reportValidity",
+        "requestAnimationFrame",
+        "requestAutocomplete",
+        "requestData",
+        "requestFullscreen",
+        "requestMediaKeySystemAccess",
+        "requestPermission",
+        "requestPointerLock",
+        "requestStart",
+        "requestingWindow",
+        "required",
+        "requiredExtensions",
+        "requiredFeatures",
+        "reset",
+        "resetTransform",
+        "resize",
+        "resizeBy",
+        "resizeTo",
+        "resolve",
+        "response",
+        "responseBody",
+        "responseEnd",
+        "responseStart",
+        "responseText",
+        "responseType",
+        "responseURL",
+        "responseXML",
+        "restore",
+        "result",
+        "resultType",
+        "resume",
+        "returnValue",
+        "rev",
+        "reverse",
+        "reversed",
+        "revocable",
+        "revokeObjectURL",
+        "rgbColor",
+        "right",
+        "rightContext",
+        "rightMargin",
+        "rolloffFactor",
+        "root",
+        "rootElement",
+        "rotate",
+        "rotateAxisAngle",
+        "rotateAxisAngleSelf",
+        "rotateFromVector",
+        "rotateFromVectorSelf",
+        "rotateSelf",
+        "rotation",
+        "rotationRate",
+        "round",
+        "rowIndex",
+        "rowSpan",
+        "rows",
+        "rubyAlign",
+        "rubyOverhang",
+        "rubyPosition",
+        "rules",
+        "runtime",
+        "runtimeStyle",
+        "rx",
+        "ry",
+        "safari",
+        "sampleCoverage",
+        "sampleRate",
+        "sandbox",
+        "save",
+        "scale",
+        "scale3d",
+        "scale3dSelf",
+        "scaleNonUniform",
+        "scaleNonUniformSelf",
+        "scaleSelf",
+        "scheme",
+        "scissor",
+        "scope",
+        "scopeName",
+        "scoped",
+        "screen",
+        "screenBrightness",
+        "screenEnabled",
+        "screenLeft",
+        "screenPixelToMillimeterX",
+        "screenPixelToMillimeterY",
+        "screenTop",
+        "screenX",
+        "screenY",
+        "scripts",
+        "scroll",
+        "scroll-behavior",
+        "scrollAmount",
+        "scrollBehavior",
+        "scrollBy",
+        "scrollByLines",
+        "scrollByPages",
+        "scrollDelay",
+        "scrollHeight",
+        "scrollIntoView",
+        "scrollIntoViewIfNeeded",
+        "scrollLeft",
+        "scrollLeftMax",
+        "scrollMaxX",
+        "scrollMaxY",
+        "scrollTo",
+        "scrollTop",
+        "scrollTopMax",
+        "scrollWidth",
+        "scrollX",
+        "scrollY",
+        "scrollbar3dLightColor",
+        "scrollbarArrowColor",
+        "scrollbarBaseColor",
+        "scrollbarDarkShadowColor",
+        "scrollbarFaceColor",
+        "scrollbarHighlightColor",
+        "scrollbarShadowColor",
+        "scrollbarTrackColor",
+        "scrollbars",
+        "scrolling",
+        "sdp",
+        "sdpMLineIndex",
+        "sdpMid",
+        "seal",
+        "search",
+        "searchBox",
+        "searchBoxJavaBridge_",
+        "searchParams",
+        "sectionRowIndex",
+        "secureConnectionStart",
+        "security",
+        "seed",
+        "seekable",
+        "seeking",
+        "select",
+        "selectAllChildren",
+        "selectNode",
+        "selectNodeContents",
+        "selectNodes",
+        "selectSingleNode",
+        "selectSubString",
+        "selected",
+        "selectedIndex",
+        "selectedOptions",
+        "selectedStyleSheetSet",
+        "selectedStylesheetSet",
+        "selection",
+        "selectionDirection",
+        "selectionEnd",
+        "selectionStart",
+        "selector",
+        "selectorText",
+        "self",
+        "send",
+        "sendAsBinary",
+        "sendBeacon",
+        "sender",
+        "sentTimestamp",
+        "separator",
+        "serializeToString",
+        "serviceWorker",
+        "sessionId",
+        "sessionStorage",
+        "set",
+        "setActive",
+        "setAlpha",
+        "setAttribute",
+        "setAttributeNS",
+        "setAttributeNode",
+        "setAttributeNodeNS",
+        "setBaseAndExtent",
+        "setBingCurrentSearchDefault",
+        "setCapture",
+        "setColor",
+        "setCompositeOperation",
+        "setCurrentTime",
+        "setCustomValidity",
+        "setData",
+        "setDate",
+        "setDragImage",
+        "setEnd",
+        "setEndAfter",
+        "setEndBefore",
+        "setEndPoint",
+        "setFillColor",
+        "setFilterRes",
+        "setFloat32",
+        "setFloat64",
+        "setFloatValue",
+        "setFullYear",
+        "setHours",
+        "setImmediate",
+        "setInt16",
+        "setInt32",
+        "setInt8",
+        "setInterval",
+        "setItem",
+        "setLineCap",
+        "setLineDash",
+        "setLineJoin",
+        "setLineWidth",
+        "setLocalDescription",
+        "setMatrix",
+        "setMatrixValue",
+        "setMediaKeys",
+        "setMilliseconds",
+        "setMinutes",
+        "setMiterLimit",
+        "setMonth",
+        "setNamedItem",
+        "setNamedItemNS",
+        "setNonUserCodeExceptions",
+        "setOrientToAngle",
+        "setOrientToAuto",
+        "setOrientation",
+        "setOverrideHistoryNavigationMode",
+        "setPaint",
+        "setParameter",
+        "setPeriodicWave",
+        "setPointerCapture",
+        "setPosition",
+        "setPreference",
+        "setProperty",
+        "setPrototypeOf",
+        "setRGBColor",
+        "setRGBColorICCColor",
+        "setRadius",
+        "setRangeText",
+        "setRemoteDescription",
+        "setRequestHeader",
+        "setResizable",
+        "setResourceTimingBufferSize",
+        "setRotate",
+        "setScale",
+        "setSeconds",
+        "setSelectionRange",
+        "setServerCertificate",
+        "setShadow",
+        "setSkewX",
+        "setSkewY",
+        "setStart",
+        "setStartAfter",
+        "setStartBefore",
+        "setStdDeviation",
+        "setStringValue",
+        "setStrokeColor",
+        "setSuggestResult",
+        "setTargetAtTime",
+        "setTargetValueAtTime",
+        "setTime",
+        "setTimeout",
+        "setTransform",
+        "setTranslate",
+        "setUTCDate",
+        "setUTCFullYear",
+        "setUTCHours",
+        "setUTCMilliseconds",
+        "setUTCMinutes",
+        "setUTCMonth",
+        "setUTCSeconds",
+        "setUint16",
+        "setUint32",
+        "setUint8",
+        "setUri",
+        "setValueAtTime",
+        "setValueCurveAtTime",
+        "setVariable",
+        "setVelocity",
+        "setVersion",
+        "setYear",
+        "settingName",
+        "settingValue",
+        "sex",
+        "shaderSource",
+        "shadowBlur",
+        "shadowColor",
+        "shadowOffsetX",
+        "shadowOffsetY",
+        "shadowRoot",
+        "shape",
+        "shape-rendering",
+        "shapeRendering",
+        "sheet",
+        "shift",
+        "shiftKey",
+        "shiftLeft",
+        "show",
+        "showHelp",
+        "showModal",
+        "showModalDialog",
+        "showModelessDialog",
+        "showNotification",
+        "sidebar",
+        "sign",
+        "signalingState",
+        "sin",
+        "singleNodeValue",
+        "sinh",
+        "size",
+        "sizeToContent",
+        "sizes",
+        "skewX",
+        "skewXSelf",
+        "skewY",
+        "skewYSelf",
+        "slice",
+        "slope",
+        "small",
+        "smil",
+        "smoothingTimeConstant",
+        "snapToLines",
+        "snapshotItem",
+        "snapshotLength",
+        "some",
+        "sort",
+        "source",
+        "sourceBuffer",
+        "sourceBuffers",
+        "sourceIndex",
+        "spacing",
+        "span",
+        "speakAs",
+        "speaking",
+        "specified",
+        "specularConstant",
+        "specularExponent",
+        "speechSynthesis",
+        "speed",
+        "speedOfSound",
+        "spellcheck",
+        "splice",
+        "split",
+        "splitText",
+        "spreadMethod",
+        "sqrt",
+        "src",
+        "srcElement",
+        "srcFilter",
+        "srcUrn",
+        "srcdoc",
+        "srclang",
+        "srcset",
+        "stack",
+        "stackTraceLimit",
+        "stacktrace",
+        "standalone",
+        "standby",
+        "start",
+        "startContainer",
+        "startIce",
+        "startOffset",
+        "startRendering",
+        "startTime",
+        "startsWith",
+        "state",
+        "status",
+        "statusMessage",
+        "statusText",
+        "statusbar",
+        "stdDeviationX",
+        "stdDeviationY",
+        "stencilFunc",
+        "stencilFuncSeparate",
+        "stencilMask",
+        "stencilMaskSeparate",
+        "stencilOp",
+        "stencilOpSeparate",
+        "step",
+        "stepDown",
+        "stepMismatch",
+        "stepUp",
+        "sticky",
+        "stitchTiles",
+        "stop",
+        "stop-color",
+        "stop-opacity",
+        "stopColor",
+        "stopImmediatePropagation",
+        "stopOpacity",
+        "stopPropagation",
+        "storageArea",
+        "storageName",
+        "storageStatus",
+        "storeSiteSpecificTrackingException",
+        "storeWebWideTrackingException",
+        "stpVersion",
+        "stream",
+        "strike",
+        "stringValue",
+        "stringify",
+        "stroke",
+        "stroke-dasharray",
+        "stroke-dashoffset",
+        "stroke-linecap",
+        "stroke-linejoin",
+        "stroke-miterlimit",
+        "stroke-opacity",
+        "stroke-width",
+        "strokeDasharray",
+        "strokeDashoffset",
+        "strokeLinecap",
+        "strokeLinejoin",
+        "strokeMiterlimit",
+        "strokeOpacity",
+        "strokeRect",
+        "strokeStyle",
+        "strokeText",
+        "strokeWidth",
+        "style",
+        "styleFloat",
+        "styleMedia",
+        "styleSheet",
+        "styleSheetSets",
+        "styleSheets",
+        "sub",
+        "subarray",
+        "subject",
+        "submit",
+        "subscribe",
+        "substr",
+        "substring",
+        "substringData",
+        "subtle",
+        "suffix",
+        "suffixes",
+        "summary",
+        "sup",
+        "supports",
+        "surfaceScale",
+        "surroundContents",
+        "suspend",
+        "suspendRedraw",
+        "swapCache",
+        "swapNode",
+        "sweepFlag",
+        "symbols",
+        "system",
+        "systemCode",
+        "systemId",
+        "systemLanguage",
+        "systemXDPI",
+        "systemYDPI",
+        "tBodies",
+        "tFoot",
+        "tHead",
+        "tabIndex",
+        "table",
+        "table-layout",
+        "tableLayout",
+        "tableValues",
+        "tag",
+        "tagName",
+        "tagUrn",
+        "tags",
+        "taintEnabled",
+        "takeRecords",
+        "tan",
+        "tanh",
+        "target",
+        "targetElement",
+        "targetTouches",
+        "targetX",
+        "targetY",
+        "tel",
+        "terminate",
+        "test",
+        "texImage2D",
+        "texParameterf",
+        "texParameteri",
+        "texSubImage2D",
+        "text",
+        "text-align",
+        "text-anchor",
+        "text-decoration",
+        "text-decoration-color",
+        "text-decoration-line",
+        "text-decoration-style",
+        "text-indent",
+        "text-overflow",
+        "text-rendering",
+        "text-shadow",
+        "text-transform",
+        "textAlign",
+        "textAlignLast",
+        "textAnchor",
+        "textAutospace",
+        "textBaseline",
+        "textContent",
+        "textDecoration",
+        "textDecorationBlink",
+        "textDecorationColor",
+        "textDecorationLine",
+        "textDecorationLineThrough",
+        "textDecorationNone",
+        "textDecorationOverline",
+        "textDecorationStyle",
+        "textDecorationUnderline",
+        "textIndent",
+        "textJustify",
+        "textJustifyTrim",
+        "textKashida",
+        "textKashidaSpace",
+        "textLength",
+        "textOverflow",
+        "textRendering",
+        "textShadow",
+        "textTracks",
+        "textTransform",
+        "textUnderlinePosition",
+        "then",
+        "threadId",
+        "threshold",
+        "tiltX",
+        "tiltY",
+        "time",
+        "timeEnd",
+        "timeStamp",
+        "timeout",
+        "timestamp",
+        "timestampOffset",
+        "timing",
+        "title",
+        "toArray",
+        "toBlob",
+        "toDataURL",
+        "toDateString",
+        "toElement",
+        "toExponential",
+        "toFixed",
+        "toFloat32Array",
+        "toFloat64Array",
+        "toGMTString",
+        "toISOString",
+        "toJSON",
+        "toLocaleDateString",
+        "toLocaleFormat",
+        "toLocaleLowerCase",
+        "toLocaleString",
+        "toLocaleTimeString",
+        "toLocaleUpperCase",
+        "toLowerCase",
+        "toMethod",
+        "toPrecision",
+        "toSdp",
+        "toSource",
+        "toStaticHTML",
+        "toString",
+        "toStringTag",
+        "toTimeString",
+        "toUTCString",
+        "toUpperCase",
+        "toggle",
+        "toggleLongPressEnabled",
+        "tooLong",
+        "toolbar",
+        "top",
+        "topMargin",
+        "total",
+        "totalFrameDelay",
+        "totalVideoFrames",
+        "touchAction",
+        "touches",
+        "trace",
+        "track",
+        "transaction",
+        "transactions",
+        "transform",
+        "transform-origin",
+        "transform-style",
+        "transformOrigin",
+        "transformPoint",
+        "transformString",
+        "transformStyle",
+        "transformToDocument",
+        "transformToFragment",
+        "transition",
+        "transition-delay",
+        "transition-duration",
+        "transition-property",
+        "transition-timing-function",
+        "transitionDelay",
+        "transitionDuration",
+        "transitionProperty",
+        "transitionTimingFunction",
+        "translate",
+        "translateSelf",
+        "translationX",
+        "translationY",
+        "trim",
+        "trimLeft",
+        "trimRight",
+        "trueSpeed",
+        "trunc",
+        "truncate",
+        "type",
+        "typeDetail",
+        "typeMismatch",
+        "typeMustMatch",
+        "types",
+        "ubound",
+        "undefined",
+        "unescape",
+        "uneval",
+        "unicode-bidi",
+        "unicodeBidi",
+        "uniform1f",
+        "uniform1fv",
+        "uniform1i",
+        "uniform1iv",
+        "uniform2f",
+        "uniform2fv",
+        "uniform2i",
+        "uniform2iv",
+        "uniform3f",
+        "uniform3fv",
+        "uniform3i",
+        "uniform3iv",
+        "uniform4f",
+        "uniform4fv",
+        "uniform4i",
+        "uniform4iv",
+        "uniformMatrix2fv",
+        "uniformMatrix3fv",
+        "uniformMatrix4fv",
+        "unique",
+        "uniqueID",
+        "uniqueNumber",
+        "unitType",
+        "units",
+        "unloadEventEnd",
+        "unloadEventStart",
+        "unlock",
+        "unmount",
+        "unobserve",
+        "unpause",
+        "unpauseAnimations",
+        "unreadCount",
+        "unregister",
+        "unregisterContentHandler",
+        "unregisterProtocolHandler",
+        "unscopables",
+        "unselectable",
+        "unshift",
+        "unsubscribe",
+        "unsuspendRedraw",
+        "unsuspendRedrawAll",
+        "unwatch",
+        "unwrapKey",
+        "update",
+        "updateCommands",
+        "updateIce",
+        "updateInterval",
+        "updateSettings",
+        "updated",
+        "updating",
+        "upload",
+        "upper",
+        "upperBound",
+        "upperOpen",
+        "uri",
+        "url",
+        "urn",
+        "urns",
+        "usages",
+        "useCurrentView",
+        "useMap",
+        "useProgram",
+        "usedSpace",
+        "userAgent",
+        "userLanguage",
+        "username",
+        "v8BreakIterator",
+        "vAlign",
+        "vLink",
+        "valid",
+        "validateProgram",
+        "validationMessage",
+        "validity",
+        "value",
+        "valueAsDate",
+        "valueAsNumber",
+        "valueAsString",
+        "valueInSpecifiedUnits",
+        "valueMissing",
+        "valueOf",
+        "valueText",
+        "valueType",
+        "values",
+        "vector-effect",
+        "vectorEffect",
+        "velocityAngular",
+        "velocityExpansion",
+        "velocityX",
+        "velocityY",
+        "vendor",
+        "vendorSub",
+        "verify",
+        "version",
+        "vertexAttrib1f",
+        "vertexAttrib1fv",
+        "vertexAttrib2f",
+        "vertexAttrib2fv",
+        "vertexAttrib3f",
+        "vertexAttrib3fv",
+        "vertexAttrib4f",
+        "vertexAttrib4fv",
+        "vertexAttribDivisorANGLE",
+        "vertexAttribPointer",
+        "vertical",
+        "vertical-align",
+        "verticalAlign",
+        "verticalOverflow",
+        "vibrate",
+        "videoHeight",
+        "videoTracks",
+        "videoWidth",
+        "view",
+        "viewBox",
+        "viewBoxString",
+        "viewTarget",
+        "viewTargetString",
+        "viewport",
+        "viewportAnchorX",
+        "viewportAnchorY",
+        "viewportElement",
+        "visibility",
+        "visibilityState",
+        "visible",
+        "vlinkColor",
+        "voice",
+        "volume",
+        "vrml",
+        "vspace",
+        "w",
+        "wand",
+        "warn",
+        "wasClean",
+        "watch",
+        "watchPosition",
+        "webdriver",
+        "webkitAddKey",
+        "webkitAnimation",
+        "webkitAnimationDelay",
+        "webkitAnimationDirection",
+        "webkitAnimationDuration",
+        "webkitAnimationFillMode",
+        "webkitAnimationIterationCount",
+        "webkitAnimationName",
+        "webkitAnimationPlayState",
+        "webkitAnimationTimingFunction",
+        "webkitAppearance",
+        "webkitAudioContext",
+        "webkitAudioDecodedByteCount",
+        "webkitAudioPannerNode",
+        "webkitBackfaceVisibility",
+        "webkitBackground",
+        "webkitBackgroundAttachment",
+        "webkitBackgroundClip",
+        "webkitBackgroundColor",
+        "webkitBackgroundImage",
+        "webkitBackgroundOrigin",
+        "webkitBackgroundPosition",
+        "webkitBackgroundPositionX",
+        "webkitBackgroundPositionY",
+        "webkitBackgroundRepeat",
+        "webkitBackgroundSize",
+        "webkitBackingStorePixelRatio",
+        "webkitBorderImage",
+        "webkitBorderImageOutset",
+        "webkitBorderImageRepeat",
+        "webkitBorderImageSlice",
+        "webkitBorderImageSource",
+        "webkitBorderImageWidth",
+        "webkitBoxAlign",
+        "webkitBoxDirection",
+        "webkitBoxFlex",
+        "webkitBoxOrdinalGroup",
+        "webkitBoxOrient",
+        "webkitBoxPack",
+        "webkitBoxSizing",
+        "webkitCancelAnimationFrame",
+        "webkitCancelFullScreen",
+        "webkitCancelKeyRequest",
+        "webkitCancelRequestAnimationFrame",
+        "webkitClearResourceTimings",
+        "webkitClosedCaptionsVisible",
+        "webkitConvertPointFromNodeToPage",
+        "webkitConvertPointFromPageToNode",
+        "webkitCreateShadowRoot",
+        "webkitCurrentFullScreenElement",
+        "webkitCurrentPlaybackTargetIsWireless",
+        "webkitDirectionInvertedFromDevice",
+        "webkitDisplayingFullscreen",
+        "webkitEnterFullScreen",
+        "webkitEnterFullscreen",
+        "webkitExitFullScreen",
+        "webkitExitFullscreen",
+        "webkitExitPointerLock",
+        "webkitFullScreenKeyboardInputAllowed",
+        "webkitFullscreenElement",
+        "webkitFullscreenEnabled",
+        "webkitGenerateKeyRequest",
+        "webkitGetAsEntry",
+        "webkitGetDatabaseNames",
+        "webkitGetEntries",
+        "webkitGetEntriesByName",
+        "webkitGetEntriesByType",
+        "webkitGetFlowByName",
+        "webkitGetGamepads",
+        "webkitGetImageDataHD",
+        "webkitGetNamedFlows",
+        "webkitGetRegionFlowRanges",
+        "webkitGetUserMedia",
+        "webkitHasClosedCaptions",
+        "webkitHidden",
+        "webkitIDBCursor",
+        "webkitIDBDatabase",
+        "webkitIDBDatabaseError",
+        "webkitIDBDatabaseException",
+        "webkitIDBFactory",
+        "webkitIDBIndex",
+        "webkitIDBKeyRange",
+        "webkitIDBObjectStore",
+        "webkitIDBRequest",
+        "webkitIDBTransaction",
+        "webkitImageSmoothingEnabled",
+        "webkitIndexedDB",
+        "webkitInitMessageEvent",
+        "webkitIsFullScreen",
+        "webkitKeys",
+        "webkitLineDashOffset",
+        "webkitLockOrientation",
+        "webkitMatchesSelector",
+        "webkitMediaStream",
+        "webkitNotifications",
+        "webkitOfflineAudioContext",
+        "webkitOrientation",
+        "webkitPeerConnection00",
+        "webkitPersistentStorage",
+        "webkitPointerLockElement",
+        "webkitPostMessage",
+        "webkitPreservesPitch",
+        "webkitPutImageDataHD",
+        "webkitRTCPeerConnection",
+        "webkitRegionOverset",
+        "webkitRequestAnimationFrame",
+        "webkitRequestFileSystem",
+        "webkitRequestFullScreen",
+        "webkitRequestFullscreen",
+        "webkitRequestPointerLock",
+        "webkitResolveLocalFileSystemURL",
+        "webkitSetMediaKeys",
+        "webkitSetResourceTimingBufferSize",
+        "webkitShadowRoot",
+        "webkitShowPlaybackTargetPicker",
+        "webkitSlice",
+        "webkitSpeechGrammar",
+        "webkitSpeechGrammarList",
+        "webkitSpeechRecognition",
+        "webkitSpeechRecognitionError",
+        "webkitSpeechRecognitionEvent",
+        "webkitStorageInfo",
+        "webkitSupportsFullscreen",
+        "webkitTemporaryStorage",
+        "webkitTextSizeAdjust",
+        "webkitTransform",
+        "webkitTransformOrigin",
+        "webkitTransition",
+        "webkitTransitionDelay",
+        "webkitTransitionDuration",
+        "webkitTransitionProperty",
+        "webkitTransitionTimingFunction",
+        "webkitURL",
+        "webkitUnlockOrientation",
+        "webkitUserSelect",
+        "webkitVideoDecodedByteCount",
+        "webkitVisibilityState",
+        "webkitWirelessVideoPlaybackDisabled",
+        "webkitdropzone",
+        "webstore",
+        "weight",
+        "whatToShow",
+        "wheelDelta",
+        "wheelDeltaX",
+        "wheelDeltaY",
+        "which",
+        "white-space",
+        "whiteSpace",
+        "wholeText",
+        "widows",
+        "width",
+        "will-change",
+        "willChange",
+        "willValidate",
+        "window",
+        "withCredentials",
+        "word-break",
+        "word-spacing",
+        "word-wrap",
+        "wordBreak",
+        "wordSpacing",
+        "wordWrap",
+        "wrap",
+        "wrapKey",
+        "write",
+        "writeln",
+        "writingMode",
+        "x",
+        "x1",
+        "x2",
+        "xChannelSelector",
+        "xmlEncoding",
+        "xmlStandalone",
+        "xmlVersion",
+        "xmlbase",
+        "xmllang",
+        "xmlspace",
+        "y",
+        "y1",
+        "y2",
+        "yChannelSelector",
+        "yandex",
+        "z",
+        "z-index",
+        "zIndex",
+        "zoom",
+        "zoomAndPan",
+        "zoomRectScreen"
+    ]
+}
diff --git a/node_modules/uglify-js/tools/exports.js b/node_modules/uglify-js/tools/exports.js
new file mode 100644
index 000000000..09acc13ec
--- /dev/null
+++ b/node_modules/uglify-js/tools/exports.js
@@ -0,0 +1,19 @@
+exports["Compressor"] = Compressor;
+exports["DefaultsError"] = DefaultsError;
+exports["Dictionary"] = Dictionary;
+exports["JS_Parse_Error"] = JS_Parse_Error;
+exports["MAP"] = MAP;
+exports["OutputStream"] = OutputStream;
+exports["SourceMap"] = SourceMap;
+exports["TreeTransformer"] = TreeTransformer;
+exports["TreeWalker"] = TreeWalker;
+exports["base54"] = base54;
+exports["defaults"] = defaults;
+exports["mangle_properties"] = mangle_properties;
+exports["merge"] = merge;
+exports["parse"] = parse;
+exports["push_uniq"] = push_uniq;
+exports["string_template"] = string_template;
+exports["tokenizer"] = tokenizer;
+exports["is_identifier"] = is_identifier;
+exports["SymbolDef"] = SymbolDef;
diff --git a/node_modules/uglify-js/tools/node.js b/node_modules/uglify-js/tools/node.js
new file mode 100644
index 000000000..147751aeb
--- /dev/null
+++ b/node_modules/uglify-js/tools/node.js
@@ -0,0 +1,320 @@
+// workaround for tty output truncation upon process.exit()
+[process.stdout, process.stderr].forEach(function(stream){
+    if (stream._handle && stream._handle.setBlocking)
+        stream._handle.setBlocking(true);
+});
+
+var path = require("path");
+var fs = require("fs");
+
+var UglifyJS = exports;
+var FILES = UglifyJS.FILES = [
+    "../lib/utils.js",
+    "../lib/ast.js",
+    "../lib/parse.js",
+    "../lib/transform.js",
+    "../lib/scope.js",
+    "../lib/output.js",
+    "../lib/compress.js",
+    "../lib/sourcemap.js",
+    "../lib/mozilla-ast.js",
+    "../lib/propmangle.js",
+    "./exports.js",
+].map(function(file){
+    return require.resolve(file);
+});
+
+new Function("MOZ_SourceMap", "exports", FILES.map(function(file){
+    return fs.readFileSync(file, "utf8");
+}).join("\n\n"))(
+    require("source-map"),
+    UglifyJS
+);
+
+UglifyJS.AST_Node.warn_function = function(txt) {
+    console.error("WARN: %s", txt);
+};
+
+function read_source_map(code) {
+    var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);
+    if (!match) {
+        UglifyJS.AST_Node.warn("inline source map not found");
+        return null;
+    }
+    return JSON.parse(new Buffer(match[2], "base64"));
+}
+
+UglifyJS.minify = function(files, options) {
+    options = UglifyJS.defaults(options, {
+        compress         : {},
+        fromString       : false,
+        inSourceMap      : null,
+        mangle           : {},
+        mangleProperties : false,
+        nameCache        : null,
+        outFileName      : null,
+        output           : null,
+        outSourceMap     : null,
+        parse            : {},
+        sourceMapInline  : false,
+        sourceMapUrl     : null,
+        sourceRoot       : null,
+        spidermonkey     : false,
+        warnings         : false,
+    });
+    UglifyJS.base54.reset();
+
+    var inMap = options.inSourceMap;
+    if (typeof inMap == "string" && inMap != "inline") {
+        inMap = JSON.parse(fs.readFileSync(inMap, "utf8"));
+    }
+
+    // 1. parse
+    var toplevel = null,
+        sourcesContent = {};
+
+    if (options.spidermonkey) {
+        if (inMap == "inline") {
+            throw new Error("inline source map only works with built-in parser");
+        }
+        toplevel = UglifyJS.AST_Node.from_mozilla_ast(files);
+    } else {
+        function addFile(file, fileUrl) {
+            var code = options.fromString
+                ? file
+                : fs.readFileSync(file, "utf8");
+            if (inMap == "inline") {
+                inMap = read_source_map(code);
+            }
+            sourcesContent[fileUrl] = code;
+            toplevel = UglifyJS.parse(code, {
+                filename: fileUrl,
+                toplevel: toplevel,
+                bare_returns: options.parse ? options.parse.bare_returns : undefined
+            });
+        }
+        if (!options.fromString) {
+            files = UglifyJS.simple_glob(files);
+            if (inMap == "inline" && files.length > 1) {
+                throw new Error("inline source map only works with singular input");
+            }
+        }
+        [].concat(files).forEach(function (files, i) {
+            if (typeof files === 'string') {
+                addFile(files, options.fromString ? i : files);
+            } else {
+                for (var fileUrl in files) {
+                    addFile(files[fileUrl], fileUrl);
+                }
+            }
+        });
+    }
+    if (options.wrap) {
+      toplevel = toplevel.wrap_commonjs(options.wrap, options.exportAll);
+    }
+
+    // 2. compress
+    if (options.compress) {
+        var compress = { warnings: options.warnings };
+        UglifyJS.merge(compress, options.compress);
+        toplevel.figure_out_scope(options.mangle);
+        var sq = UglifyJS.Compressor(compress);
+        toplevel = sq.compress(toplevel);
+    }
+
+    // 3. mangle properties
+    if (options.mangleProperties || options.nameCache) {
+        options.mangleProperties.cache = UglifyJS.readNameCache(options.nameCache, "props");
+        toplevel = UglifyJS.mangle_properties(toplevel, options.mangleProperties);
+        UglifyJS.writeNameCache(options.nameCache, "props", options.mangleProperties.cache);
+    }
+
+    // 4. mangle
+    if (options.mangle) {
+        toplevel.figure_out_scope(options.mangle);
+        toplevel.compute_char_frequency(options.mangle);
+        toplevel.mangle_names(options.mangle);
+    }
+
+    // 5. output
+    var output = { max_line_len: 32000 };
+    if (options.outSourceMap || options.sourceMapInline) {
+        output.source_map = UglifyJS.SourceMap({
+            // prefer outFileName, otherwise use outSourceMap without .map suffix
+            file: options.outFileName || (typeof options.outSourceMap === 'string' ? options.outSourceMap.replace(/\.map$/i, '') : null),
+            orig: inMap,
+            root: options.sourceRoot
+        });
+        if (options.sourceMapIncludeSources) {
+            for (var file in sourcesContent) {
+                if (sourcesContent.hasOwnProperty(file)) {
+                    output.source_map.get().setSourceContent(file, sourcesContent[file]);
+                }
+            }
+        }
+
+    }
+    if (options.output) {
+        UglifyJS.merge(output, options.output);
+    }
+    var stream = UglifyJS.OutputStream(output);
+    toplevel.print(stream);
+
+
+    var source_map = output.source_map;
+    if (source_map) {
+        source_map = source_map + "";
+    }
+
+    var mappingUrlPrefix = "\n//# sourceMappingURL=";
+    if (options.sourceMapInline) {
+        stream += mappingUrlPrefix + "data:application/json;charset=utf-8;base64," + new Buffer(source_map).toString("base64");
+    } else if (options.outSourceMap && typeof options.outSourceMap === "string" && options.sourceMapUrl !== false) {
+        stream += mappingUrlPrefix + (typeof options.sourceMapUrl === "string" ? options.sourceMapUrl : options.outSourceMap);
+    }
+
+    return {
+        code : stream + "",
+        map  : source_map
+    };
+};
+
+// UglifyJS.describe_ast = function() {
+//     function doitem(ctor) {
+//         var sub = {};
+//         ctor.SUBCLASSES.forEach(function(ctor){
+//             sub[ctor.TYPE] = doitem(ctor);
+//         });
+//         var ret = {};
+//         if (ctor.SELF_PROPS.length > 0) ret.props = ctor.SELF_PROPS;
+//         if (ctor.SUBCLASSES.length > 0) ret.sub = sub;
+//         return ret;
+//     }
+//     return doitem(UglifyJS.AST_Node).sub;
+// }
+
+UglifyJS.describe_ast = function() {
+    var out = UglifyJS.OutputStream({ beautify: true });
+    function doitem(ctor) {
+        out.print("AST_" + ctor.TYPE);
+        var props = ctor.SELF_PROPS.filter(function(prop){
+            return !/^\$/.test(prop);
+        });
+        if (props.length > 0) {
+            out.space();
+            out.with_parens(function(){
+                props.forEach(function(prop, i){
+                    if (i) out.space();
+                    out.print(prop);
+                });
+            });
+        }
+        if (ctor.documentation) {
+            out.space();
+            out.print_string(ctor.documentation);
+        }
+        if (ctor.SUBCLASSES.length > 0) {
+            out.space();
+            out.with_block(function(){
+                ctor.SUBCLASSES.forEach(function(ctor, i){
+                    out.indent();
+                    doitem(ctor);
+                    out.newline();
+                });
+            });
+        }
+    };
+    doitem(UglifyJS.AST_Node);
+    return out + "";
+};
+
+function readReservedFile(filename, reserved) {
+    if (!reserved) {
+        reserved = { vars: [], props: [] };
+    }
+    var data = fs.readFileSync(filename, "utf8");
+    data = JSON.parse(data);
+    if (data.vars) {
+        data.vars.forEach(function(name){
+            UglifyJS.push_uniq(reserved.vars, name);
+        });
+    }
+    if (data.props) {
+        data.props.forEach(function(name){
+            UglifyJS.push_uniq(reserved.props, name);
+        });
+    }
+    return reserved;
+}
+
+UglifyJS.readReservedFile = readReservedFile;
+
+UglifyJS.readDefaultReservedFile = function(reserved) {
+    return readReservedFile(require.resolve("./domprops.json"), reserved);
+};
+
+UglifyJS.readNameCache = function(filename, key) {
+    var cache = null;
+    if (filename) {
+        try {
+            var cache = fs.readFileSync(filename, "utf8");
+            cache = JSON.parse(cache)[key];
+            if (!cache) throw "init";
+            cache.props = UglifyJS.Dictionary.fromObject(cache.props);
+        } catch(ex) {
+            cache = {
+                cname: -1,
+                props: new UglifyJS.Dictionary()
+            };
+        }
+    }
+    return cache;
+};
+
+UglifyJS.writeNameCache = function(filename, key, cache) {
+    if (filename) {
+        var data;
+        try {
+            data = fs.readFileSync(filename, "utf8");
+            data = JSON.parse(data);
+        } catch(ex) {
+            data = {};
+        }
+        data[key] = {
+            cname: cache.cname,
+            props: cache.props.toObject()
+        };
+        fs.writeFileSync(filename, JSON.stringify(data, null, 2), "utf8");
+    }
+};
+
+// A file glob function that only supports "*" and "?" wildcards in the basename.
+// Example: "foo/bar/*baz??.*.js"
+// Argument `glob` may be a string or an array of strings.
+// Returns an array of strings. Garbage in, garbage out.
+UglifyJS.simple_glob = function simple_glob(glob) {
+    if (Array.isArray(glob)) {
+        return [].concat.apply([], glob.map(simple_glob));
+    }
+    if (glob.match(/\*|\?/)) {
+        var dir = path.dirname(glob);
+        try {
+            var entries = fs.readdirSync(dir);
+        } catch (ex) {}
+        if (entries) {
+            var pattern = "^" + path.basename(glob)
+                .replace(/[.+^$[\]\\(){}]/g, "\\$&")
+                .replace(/\*/g, "[^/\\\\]*")
+                .replace(/\?/g, "[^/\\\\]") + "$";
+            var mod = process.platform === "win32" ? "i" : "";
+            var rx = new RegExp(pattern, mod);
+            var results = entries.filter(function(name) {
+                return rx.test(name);
+            }).map(function(name) {
+                return path.join(dir, name);
+            });
+            if (results.length) return results;
+        }
+    }
+    return [ glob ];
+};
diff --git a/node_modules/uglify-js/tools/props.html b/node_modules/uglify-js/tools/props.html
new file mode 100644
index 000000000..f7c777aac
--- /dev/null
+++ b/node_modules/uglify-js/tools/props.html
@@ -0,0 +1,61 @@
+<html>
+  <head>
+  </head>
+  <body>
+    <script>(function(){
+      var props = {};
+
+      function addObject(obj) {
+        if (obj == null) return;
+        try {
+          Object.getOwnPropertyNames(obj).forEach(add);
+        } catch(ex) {}
+        if (obj.prototype) {
+          Object.getOwnPropertyNames(obj.prototype).forEach(add);
+        }
+        if (typeof obj == "function") {
+          try {
+            Object.getOwnPropertyNames(new obj).forEach(add);
+          } catch(ex) {}
+        }
+      }
+
+      function add(name) {
+        props[name] = true;
+      }
+
+      Object.getOwnPropertyNames(window).forEach(function(thing){
+        addObject(window[thing]);
+      });
+
+      try {
+        addObject(new Event("click"));
+        addObject(new Event("contextmenu"));
+        addObject(new Event("mouseup"));
+        addObject(new Event("mousedown"));
+        addObject(new Event("keydown"));
+        addObject(new Event("keypress"));
+        addObject(new Event("keyup"));
+      } catch(ex) {}
+
+      var ta = document.createElement("textarea");
+      ta.style.width = "100%";
+      ta.style.height = "20em";
+      ta.style.boxSizing = "border-box";
+      <!-- ta.value = Object.keys(props).sort(cmp).map(function(name){ -->
+      <!--   return JSON.stringify(name); -->
+      <!-- }).join(",\n"); -->
+      ta.value = JSON.stringify({
+        vars: [],
+        props: Object.keys(props).sort(cmp)
+      }, null, 2);
+      document.body.appendChild(ta);
+
+      function cmp(a, b) {
+        a = a.toLowerCase();
+        b = b.toLowerCase();
+        return a < b ? -1 : a > b ? 1 : 0;
+      }
+    })();</script>
+  </body>
+</html>