Reorganize module loading.

We now use webpack instead of SystemJS, effectively bundling modules
into one file (plus commons chunks) for every entry point.  This results
in a much smaller extension size (almost half).  Furthermore we use
yarn/npm even for extension run-time dependencies.  This relieves us
from manually vendoring and building dependencies.  It's also easier to
understand for new developers familiar with node.

21 files changed, 13908 insertions, 0 deletions

diff --git a/tooling/pogen/.gitignore b/tooling/pogen/.gitignore
new file mode 100644
index 000000000..a6c7c2852
--- /dev/null
+++ b/tooling/pogen/.gitignore
@@ -0,0 +1 @@
+*.js
diff --git a/tooling/pogen/dumpTree.ts b/tooling/pogen/dumpTree.ts
new file mode 100644
index 000000000..958c79416
--- /dev/null
+++ b/tooling/pogen/dumpTree.ts
@@ -0,0 +1,51 @@
+/*
+ This file is part of TALER
+ (C) 2016 GNUnet e.V.
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+
+/**
+ * Print the syntax tree of a TypeScript program.
+ *
+ * @author Florian Dold
+ */
+
+/// <reference path="../decl/node.d.ts" />
+
+"use strict";
+
+import {readFileSync} from "fs";
+import {execSync} from "child_process";
+import * as ts from "typescript";
+
+
+export function processFile(sourceFile: ts.SourceFile) {
+  processNode(sourceFile);
+
+  function processNode(node: ts.Node, level=0) {
+    let indent = "";
+    for (let i = 0; i < level; i++) {
+      indent = indent + " ";
+    }
+    console.log(indent + ts.SyntaxKind[node.kind]);
+    ts.forEachChild(node, (n) => processNode(n, level+1));
+  }
+}
+
+const fileNames = process.argv.slice(2);
+
+fileNames.forEach(fileName => {
+  let sourceFile = ts.createSourceFile(fileName, readFileSync(fileName).toString(), ts.ScriptTarget.ES2016, /*setParentNodes */ true);
+  processFile(sourceFile);
+});
diff --git a/tooling/pogen/example/messages.po b/tooling/pogen/example/messages.po
new file mode 100644
index 000000000..1addae3f2
--- /dev/null
+++ b/tooling/pogen/example/messages.po
@@ -0,0 +1,107 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2016-01-27 01:51+0100\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: example/test.ts:3
+#, csharp-format
+msgid "Hello1, World"
+msgstr ""
+
+#: example/test.ts:4
+#, csharp-format
+msgid "Hello2, World"
+msgstr ""
+
+#: example/test.ts:5
+#, csharp-format
+msgid "Hello3, World"
+msgstr ""
+
+#. This is a comment and should be included 
+#: example/test.ts:9
+#, csharp-format
+msgid "Hello4, World"
+msgstr ""
+
+#: example/test.ts:12
+#, csharp-format
+msgid "Hello5, World"
+msgstr ""
+
+#: example/test.ts:13
+#, csharp-format
+msgid "Hello6,{0} World"
+msgstr ""
+
+#. This one has a multi line comment.
+#. It has multiple lines, and a trailing empty line.
+#. 
+#: example/test.ts:20
+#, csharp-format
+msgid "Hello7,{0} World{1}"
+msgstr ""
+
+#: example/test.ts:21
+#, csharp-format
+msgid "{0}Hello8,{1} World{2}"
+msgstr ""
+
+#. 
+#. This one has a multi line comment.
+#. It has multiple lines, and a leading empty line.
+#: example/test.ts:28
+#, csharp-format
+msgid "Hello9,\" '\" World"
+msgstr ""
+
+#: example/test.ts:32
+#, csharp-format
+msgid ""
+"Hello10\n"
+"            ,\" '\" Wo\n"
+"            rld"
+msgstr ""
+
+#: example/test.ts:37
+#, csharp-format
+msgid ""
+"Hello11 this is a long long string\n"
+"it will go over multiple lines and in the pofile\n"
+"it should be wrapped and stuff"
+msgstr ""
+
+#. This is a single line comment
+#: example/test.ts:42
+#, csharp-format
+msgid ""
+"Hello12 this is a long long string it will go over multiple lines and in the "
+"pofile it should be wrapped and stuff. asdf asdf asdf asdf asdf asdf asdf asdf "
+"adsf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf "
+"asdf"
+msgstr ""
+
+#: example/test.ts:42
+#, csharp-format
+msgid "This message appears twice"
+msgstr ""
+
+#: example/test.ts:45
+#, csharp-format
+msgid "This message appears twice"
+msgstr ""
+
diff --git a/tooling/pogen/example/test.ts b/tooling/pogen/example/test.ts
new file mode 100644
index 000000000..d7d5d88d6
--- /dev/null
+++ b/tooling/pogen/example/test.ts
@@ -0,0 +1,63 @@
+declare var i18n: any;
+
+console.log(i18n`Hello1, World`);
+console.log(i18n.foo()`Hello2, World`);
+console.log(i18n.foo()`Hello3, World`);
+
+
+/* This is a comment and should be included */
+console.log(i18n().foo()`Hello4, World`);
+
+
+console.log(i18n.foo`Hello5, World`);
+console.log(i18n.foo`Hello6,${123} World`);
+
+/*
+This one has a multi line comment.
+It has multiple lines, and a trailing empty line.
+
+*/
+console.log(/*lol*/i18n.foo`Hello7,${123} World${42}`);
+
+
+i18n.plural(i18n`one ${"foo"}`, i18`many ${"bar"}`);
+
+i18n.plural(i18n.foo`one bla ${"foo"}`, i18.foo`many bla ${"bar"}`);
+
+let x = 42;
+
+i18n.plural(i18n`I have ${x} apple`, i18n`I have ${x} apples`);
+
+console.log(i18n`${"foo"}Hello8,${123} World${42}`);
+
+/*
+
+This one has a multi line comment.
+It has multiple lines, and a leading empty line.
+*/
+console.log(i18n`Hello9," '" World`);
+
+// Comments with space inbetween do not count
+
+console.log(i18n`Hello10
+            ," '" Wo
+            rld`);
+
+
+console.log(i18n`Hello11 this is a long long string
+it will go over multiple lines and in the pofile
+it should be wrapped and stuff`);
+
+// This is a single line comment
+console.log(i18n`Hello12 this is a long long string it will go over multiple lines and in the pofile it should be wrapped and stuff. asdf asdf asdf asdf asdf asdf asdf asdf adsf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf`);
+
+function foo(...args: any[]) {
+}
+
+console.log(foo`Another string, must be excluded`);
+
+
+// First occurence
+console.log(i18n`This message appears twice`);
+// Second occurence
+console.log(i18n`This message appears twice`);
diff --git a/tooling/pogen/example/test2.tsx b/tooling/pogen/example/test2.tsx
new file mode 100644
index 000000000..4133f86fb
--- /dev/null
+++ b/tooling/pogen/example/test2.tsx
@@ -0,0 +1,15 @@
+let x = <i18n.Translate>foo
+{bar} {" foo "} baz</i18n.Translate>
+
+
+let y = (
+  <i18n.TranslateSwitch>
+    <i18n.TranslateSingular>
+      singular form
+      second line
+    </i18n.TranslateSingular>
+    <i18n.TranslatePlural>
+     plural form
+    </i18n.TranslatePlural>
+    </i18n.TranslateSwitch>
+);
diff --git a/tooling/pogen/pogen.ts b/tooling/pogen/pogen.ts
new file mode 100644
index 000000000..1d31a878a
--- /dev/null
+++ b/tooling/pogen/pogen.ts
@@ -0,0 +1,393 @@
+/*
+ This file is part of TALER
+ (C) 2016 GNUnet e.V.
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+
+/**
+ * Generate .po file from list of source files.
+ *
+ * Note that duplicate message IDs are NOT merged, to get the same output as
+ * you would from xgettext, just run msguniq.
+ *
+ * @author Florian Dold
+ */
+
+/// <reference path="../decl/node.d.ts" />
+
+"use strict";
+
+import {readFileSync} from "fs";
+import * as ts from "typescript";
+
+
+function wordwrap(str: string, width: number = 80): string[] {
+    var regex = '.{1,' + width + '}(\\s|$)|\\S+(\\s|$)';
+    return str.match(RegExp(regex, 'g'));
+}
+
+export function processFile(sourceFile: ts.SourceFile) {
+  processNode(sourceFile);
+  let lastTokLine = 0;
+  let preLastTokLine = 0;
+
+  function getTemplate(node: ts.Node): string {
+    switch (node.kind) {
+      case ts.SyntaxKind.FirstTemplateToken:
+        return (<any>node).text;
+      case ts.SyntaxKind.TemplateExpression:
+        let te = <ts.TemplateExpression>node;
+        let textFragments = [te.head.text];
+        for (let tsp of te.templateSpans) {
+          textFragments.push(`%${(textFragments.length-1)/2+1}$s`);
+          textFragments.push(tsp.literal.text.replace(/%/g, "%%"));
+        }
+        return textFragments.join('');
+      default:
+        return "(pogen.ts: unable to parse)";
+    }
+  }
+
+  function getComment(node: ts.Node): string {
+    let lc = ts.getLineAndCharacterOfPosition(sourceFile, node.pos);
+    let lastComments;
+    for (let l = preLastTokLine; l < lastTokLine; l++) {
+      let pos = ts.getPositionOfLineAndCharacter(sourceFile, l, 0);
+      let comments = ts.getTrailingCommentRanges(sourceFile.text, pos);
+      if (comments) {
+        lastComments = comments;
+      }
+    }
+    if (!lastComments) {
+      return;
+    }
+    let candidate = lastComments[lastComments.length-1];
+    let candidateEndLine = ts.getLineAndCharacterOfPosition(sourceFile, candidate.end).line;
+    if (candidateEndLine != lc.line - 1) {
+      return;
+    }
+    let text = sourceFile.text.slice(candidate.pos, candidate.end);
+    switch (candidate.kind) {
+      case ts.SyntaxKind.SingleLineCommentTrivia:
+        // Remove comment leader
+        text = text.replace(/^[/][/]\s*/, "");
+        break;
+      case ts.SyntaxKind.MultiLineCommentTrivia:
+        // Remove comment leader and trailer,
+        // handling white space just like xgettext.
+        text = text
+            .replace(/^[/][*](\s*?\n|\s*)?/, "")
+            .replace(/(\n[ \t]*?)?[*][/]$/, "");
+        break;
+    }
+    return text;
+  }
+
+  function getPath(node: ts.Node): string[] {
+    switch (node.kind) {
+      case ts.SyntaxKind.PropertyAccessExpression:
+        let pae = <ts.PropertyAccessExpression>node;
+        return Array.prototype.concat(getPath(pae.expression), [pae.name.text]);
+      case ts.SyntaxKind.Identifier:
+        let id = <ts.Identifier>node;
+        return [id.text];
+    }
+    return ["(other)"];
+  }
+
+  function arrayEq<T>(a1: T[], a2: T[]) {
+    if (a1.length != a2.length) {
+      return false;
+    }
+    for (let i = 0; i < a1.length; i++) {
+      if (a1[i] != a2[i]) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  interface TemplateResult {
+    comment: string;
+    path: string[];
+    template: string;
+    line: number;
+  }
+
+  function processTaggedTemplateExpression(tte: ts.TaggedTemplateExpression): TemplateResult {
+    let lc = ts.getLineAndCharacterOfPosition(sourceFile, tte.pos);
+    if (lc.line != lastTokLine) {
+      preLastTokLine = lastTokLine;
+      lastTokLine = lc.line;
+    }
+    let path = getPath(tte.tag)
+    let res: TemplateResult = {
+      path,
+      line: lc.line,
+      comment: getComment(tte),
+      template: getTemplate(tte.template).replace(/"/g, '\\"'),
+    };
+    return res;
+  }
+
+  function formatMsgComment(line: number, comment?: string) {
+    if (comment) {
+      for (let cl of comment.split('\n')) {
+        console.log(`#. ${cl}`);
+      }
+    }
+    console.log(`#: ${sourceFile.fileName}:${line+1}`);
+    console.log(`#, c-format`);
+  }
+
+  function formatMsgLine(head: string, msg: string) {
+    // Do escaping, wrap break at newlines
+    let parts = msg
+        .match(/(.*\n|.+$)/g)
+        .map((x) => x.replace(/\n/g, '\\n'))
+        .map((p) => wordwrap(p))
+        .reduce((a,b) => a.concat(b));
+    if (parts.length == 1) {
+      console.log(`${head} "${parts[0]}"`);
+    } else {
+      console.log(`${head} ""`);
+      for (let p of parts) {
+        console.log(`"${p}"`);
+      }
+    }
+  }
+
+  interface JsxProcessingContext {
+
+  }
+
+  function getJsxElementPath(node: ts.Node) {
+    let path;
+    let process = (childNode) => {
+      switch (childNode.kind) {
+        case ts.SyntaxKind.JsxOpeningElement:
+        {
+          let e = childNode as ts.JsxOpeningElement;
+          return path = getPath(e.tagName);
+        }
+        default:
+          break;
+      }
+    };
+    ts.forEachChild(node, process);
+    return path;
+  }
+
+  function translateJsxExpression(node: ts.Node, h) {
+      switch (node.kind) {
+        case ts.SyntaxKind.StringLiteral:
+        {
+          let e = node as ts.StringLiteral;  
+          return e.text;
+        }
+        default:
+          return `%${h[0]++}$s`;
+      }
+  }
+
+  function trim(s) {
+    return s.replace(/^[ \n\t]*/, "").replace(/[ \n\t]*$/, "");
+  }
+
+  function getJsxContent(node: ts.Node) {
+    let fragments = [];
+    let holeNum = [1];
+    let process = (childNode) => {
+      switch (childNode.kind) {
+        case ts.SyntaxKind.JsxText:
+        {
+          let e = childNode as ts.JsxText;
+          let t = e.getText().split("\n").map(trim).join("\n");
+          fragments.push(t);
+        }
+        case ts.SyntaxKind.JsxOpeningElement:
+          break;
+        case ts.SyntaxKind.JsxElement:
+          fragments.push(`%${holeNum[0]++}$s`);
+          break;
+        case ts.SyntaxKind.JsxExpression:
+        {
+          let e = childNode as ts.JsxExpression;
+          fragments.push(translateJsxExpression(e.expression, holeNum));
+          break;
+        }
+        case ts.SyntaxKind.JsxClosingElement:
+          break;
+        default:
+          let lc = ts.getLineAndCharacterOfPosition(childNode.getSourceFile(), childNode.getStart());
+          console.error(`unrecognized syntax in JSX Element ${ts.SyntaxKind[childNode.kind]} (${childNode.getSourceFile().fileName}:${lc.line+1}:${lc.character+1}`);
+          break;
+      }
+    };
+    ts.forEachChild(node, process);
+    return fragments.join("");
+  }
+
+  function getJsxSingular(node: ts.Node) {
+    let res;
+    let process = (childNode) => {
+      switch (childNode.kind) {
+        case ts.SyntaxKind.JsxElement:
+        {
+          let path = getJsxElementPath(childNode);
+          if (arrayEq(path, ["i18n", "TranslateSingular"])) {
+            res = getJsxContent(childNode);
+          }
+        }
+        default:
+          break;
+      }
+    };
+    ts.forEachChild(node, process);
+    return res;
+  }
+
+  function getJsxPlural(node: ts.Node) {
+    let res;
+    let process = (childNode) => {
+      switch (childNode.kind) {
+        case ts.SyntaxKind.JsxElement:
+        {
+          let path = getJsxElementPath(childNode);
+          if (arrayEq(path, ["i18n", "TranslatePlural"])) {
+            res = getJsxContent(childNode);
+          }
+        }
+        default:
+          break;
+      }
+    };
+    ts.forEachChild(node, process);
+    return res;
+  }
+  
+
+  function processNode(node: ts.Node) {
+    switch (node.kind) {
+      case ts.SyntaxKind.JsxElement:
+        let path = getJsxElementPath(node);
+        if (arrayEq(path, ["i18n", "Translate"])) {
+          let content = getJsxContent(node);
+          let {line} = ts.getLineAndCharacterOfPosition(sourceFile, node.pos);
+          let comment = getComment(node);
+          formatMsgComment(line, comment);
+          formatMsgLine("msgid", content);
+          console.log(`msgstr ""`);
+          console.log();
+          return;
+        }
+        if (arrayEq(path, ["i18n", "TranslateSwitch"])) {
+          let {line} = ts.getLineAndCharacterOfPosition(sourceFile, node.pos);
+          let comment = getComment(node);
+          formatMsgComment(line, comment);
+          let singularForm = getJsxSingular(node);
+          if (!singularForm) {
+            console.error("singular form missing");
+            process.exit(1);
+          }
+          let pluralForm = getJsxPlural(node);
+          if (!pluralForm) {
+            console.error("plural form missing");
+            process.exit(1);
+          }
+          formatMsgLine("msgid", singularForm);
+          formatMsgLine("msgid_plural", pluralForm);
+          console.log(`msgstr[0] ""`);
+          console.log(`msgstr[1] ""`);
+          console.log();
+          return;
+        }
+        break;
+      case ts.SyntaxKind.CallExpression:
+      {
+        // might be i18n.plural(i18n[.X]`...`, i18n[.X]`...`)
+        let ce = <ts.CallExpression>node;
+        let path = getPath(ce.expression);
+        if (!arrayEq(path, ["i18n", "plural"])) {
+          break;
+        }
+        if (ce.arguments[0].kind != ts.SyntaxKind.TaggedTemplateExpression) {
+          break;
+        }
+        if (ce.arguments[1].kind != ts.SyntaxKind.TaggedTemplateExpression) {
+          break;
+        }
+        let {line} = ts.getLineAndCharacterOfPosition(sourceFile, ce.pos);
+        let t1 = processTaggedTemplateExpression(<ts.TaggedTemplateExpression>ce.arguments[0]);
+        let t2 = processTaggedTemplateExpression(<ts.TaggedTemplateExpression>ce.arguments[1]);
+        let comment = getComment(ce);
+
+        formatMsgComment(line, comment);
+        formatMsgLine("msgid", t1.template);
+        formatMsgLine("msgid_plural", t2.template);
+        console.log(`msgstr[0] ""`);
+        console.log(`msgstr[1] ""`);
+        console.log();
+
+        // Important: no processing for child i18n expressions here
+        return;
+      }
+      case ts.SyntaxKind.TaggedTemplateExpression:
+      {
+        let tte = <ts.TaggedTemplateExpression>node;
+        let {comment, template, line, path} = processTaggedTemplateExpression(tte);
+        if (path[0] != "i18n") {
+          break;
+        }
+        formatMsgComment(line, comment);
+        formatMsgLine("msgid", template);
+        console.log(`msgstr ""`);
+        console.log();
+        break;
+      }
+    }
+
+    ts.forEachChild(node, processNode);
+  }
+}
+
+const fileNames = process.argv.slice(2);
+
+console.log(
+`# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\\n"
+"Report-Msgid-Bugs-To: \\n"
+"POT-Creation-Date: 2016-11-23 00:00+0100\\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\\n"
+"Language-Team: LANGUAGE <LL@li.org>\\n"
+"Language: \\n"
+"MIME-Version: 1.0\\n"
+"Content-Type: text/plain; charset=UTF-8\\n"
+"Content-Transfer-Encoding: 8bit\\n"`);
+console.log()
+
+fileNames.sort();
+
+fileNames.forEach(fileName => {
+  let sourceFile = ts.createSourceFile(fileName, readFileSync(fileName).toString(), ts.ScriptTarget.ES2016, /*setParentNodes */ true);
+  processFile(sourceFile);
+});
diff --git a/tooling/pogen/tsconfig.json b/tooling/pogen/tsconfig.json
new file mode 100644
index 000000000..3d2b2c002
--- /dev/null
+++ b/tooling/pogen/tsconfig.json
@@ -0,0 +1,11 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es5",
+        "noImplicitAny": false,
+        "sourceMap": false
+    },
+    "files": [
+        "pogen.ts"
+    ]
+}
diff --git a/tooling/talertest/node/runtime.js b/tooling/talertest/node/runtime.js
new file mode 100644
index 000000000..8c899337c
--- /dev/null
+++ b/tooling/talertest/node/runtime.js
@@ -0,0 +1,43 @@
+/*
+ This file is part of TALER
+ (C) 2016 Inria
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ *
+ * @author Florian Dold
+ */
+
+
+"use strict";
+
+let vm = require("vm");
+let fs = require("fs");
+let process = require("process");
+let path = require("path");
+
+let testFile = path.resolve(process.argv[2]);
+
+console.log("TAP version 13");
+console.log("running test", testFile);
+
+process.on('unhandledRejection', function(reason, p){
+  console.log("Possibly Unhandled Rejection at: Promise ", p, " reason: ", reason);
+  process.exit(1);
+});
+
+let tt = require("../talertest");
+require(testFile);
+
+tt.run();
diff --git a/tooling/talertest/package.json b/tooling/talertest/package.json
new file mode 100644
index 000000000..4a53bcae9
--- /dev/null
+++ b/tooling/talertest/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "talertest",
+  "version": "1.0.0",
+  "main": "talertest.js",
+  "types": "talertest.d.ts",
+  "author": "Florian Dold",
+  "license": "GPL-2.0+",
+  "scripts": {
+    "build": "tsc"
+  },
+  "files": [
+    "node/",
+    "selenium/",
+    "talertest.d.ts",
+    "foobar"
+  ],
+  "devDependencies": {
+    "typescript": "^2.2.2"
+  }
+}
diff --git a/tooling/talertest/selenium/.gitignore b/tooling/talertest/selenium/.gitignore
new file mode 100644
index 000000000..8a8d8911e
--- /dev/null
+++ b/tooling/talertest/selenium/.gitignore
@@ -0,0 +1,2 @@
+coverage/
+coveage-*.json
diff --git a/tooling/talertest/selenium/escodegen.browser.js b/tooling/talertest/selenium/escodegen.browser.js
new file mode 100644
index 000000000..5f8f5e5b4
--- /dev/null
+++ b/tooling/talertest/selenium/escodegen.browser.js
@@ -0,0 +1,4947 @@
+// Generated by CommonJS Everywhere 0.9.7
+(function (global) {
+  function require(file, parentModule) {
+    if ({}.hasOwnProperty.call(require.cache, file))
+      return require.cache[file];
+    var resolved = require.resolve(file);
+    if (!resolved)
+      throw new Error('Failed to resolve module ' + file);
+    var module$ = {
+        id: file,
+        require: require,
+        filename: file,
+        exports: {},
+        loaded: false,
+        parent: parentModule,
+        children: []
+      };
+    if (parentModule)
+      parentModule.children.push(module$);
+    var dirname = file.slice(0, file.lastIndexOf('/') + 1);
+    require.cache[file] = module$.exports;
+    resolved.call(module$.exports, module$, module$.exports, dirname, file);
+    module$.loaded = true;
+    return require.cache[file] = module$.exports;
+  }
+  require.modules = {};
+  require.cache = {};
+  require.resolve = function (file) {
+    return {}.hasOwnProperty.call(require.modules, file) ? require.modules[file] : void 0;
+  };
+  require.define = function (file, fn) {
+    require.modules[file] = fn;
+  };
+  var process = function () {
+      var cwd = '/';
+      return {
+        title: 'browser',
+        version: 'v7.0.0',
+        browser: true,
+        env: {},
+        argv: [],
+        nextTick: global.setImmediate || function (fn) {
+          setTimeout(fn, 0);
+        },
+        cwd: function () {
+          return cwd;
+        },
+        chdir: function (dir) {
+          cwd = dir;
+        }
+      };
+    }();
+  require.define('/tools/entry-point.js', function (module, exports, __dirname, __filename) {
+    (function () {
+      'use strict';
+      global.escodegen = require('/escodegen.js', module);
+      escodegen.browser = true;
+    }());
+  });
+  require.define('/escodegen.js', function (module, exports, __dirname, __filename) {
+    (function () {
+      'use strict';
+      var Syntax, Precedence, BinaryPrecedence, SourceNode, estraverse, esutils, isArray, base, indent, json, renumber, hexadecimal, quotes, escapeless, newline, space, parentheses, semicolons, safeConcatenation, directive, extra, parse, sourceMap, sourceCode, preserveBlankLines, FORMAT_MINIFY, FORMAT_DEFAULTS;
+      estraverse = require('/node_modules/estraverse/estraverse.js', module);
+      esutils = require('/node_modules/esutils/lib/utils.js', module);
+      Syntax = estraverse.Syntax;
+      function isExpression(node) {
+        return CodeGenerator.Expression.hasOwnProperty(node.type);
+      }
+      function isStatement(node) {
+        return CodeGenerator.Statement.hasOwnProperty(node.type);
+      }
+      Precedence = {
+        Sequence: 0,
+        Yield: 1,
+        Await: 1,
+        Assignment: 1,
+        Conditional: 2,
+        ArrowFunction: 2,
+        LogicalOR: 3,
+        LogicalAND: 4,
+        BitwiseOR: 5,
+        BitwiseXOR: 6,
+        BitwiseAND: 7,
+        Equality: 8,
+        Relational: 9,
+        BitwiseSHIFT: 10,
+        Additive: 11,
+        Multiplicative: 12,
+        Unary: 13,
+        Postfix: 14,
+        Call: 15,
+        New: 16,
+        TaggedTemplate: 17,
+        Member: 18,
+        Primary: 19
+      };
+      BinaryPrecedence = {
+        '||': Precedence.LogicalOR,
+        '&&': Precedence.LogicalAND,
+        '|': Precedence.BitwiseOR,
+        '^': Precedence.BitwiseXOR,
+        '&': Precedence.BitwiseAND,
+        '==': Precedence.Equality,
+        '!=': Precedence.Equality,
+        '===': Precedence.Equality,
+        '!==': Precedence.Equality,
+        'is': Precedence.Equality,
+        'isnt': Precedence.Equality,
+        '<': Precedence.Relational,
+        '>': Precedence.Relational,
+        '<=': Precedence.Relational,
+        '>=': Precedence.Relational,
+        'in': Precedence.Relational,
+        'instanceof': Precedence.Relational,
+        '<<': Precedence.BitwiseSHIFT,
+        '>>': Precedence.BitwiseSHIFT,
+        '>>>': Precedence.BitwiseSHIFT,
+        '+': Precedence.Additive,
+        '-': Precedence.Additive,
+        '*': Precedence.Multiplicative,
+        '%': Precedence.Multiplicative,
+        '/': Precedence.Multiplicative
+      };
+      var F_ALLOW_IN = 1, F_ALLOW_CALL = 1 << 1, F_ALLOW_UNPARATH_NEW = 1 << 2, F_FUNC_BODY = 1 << 3, F_DIRECTIVE_CTX = 1 << 4, F_SEMICOLON_OPT = 1 << 5;
+      var E_FTT = F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW, E_TTF = F_ALLOW_IN | F_ALLOW_CALL, E_TTT = F_ALLOW_IN | F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW, E_TFF = F_ALLOW_IN, E_FFT = F_ALLOW_UNPARATH_NEW, E_TFT = F_ALLOW_IN | F_ALLOW_UNPARATH_NEW;
+      var S_TFFF = F_ALLOW_IN, S_TFFT = F_ALLOW_IN | F_SEMICOLON_OPT, S_FFFF = 0, S_TFTF = F_ALLOW_IN | F_DIRECTIVE_CTX, S_TTFF = F_ALLOW_IN | F_FUNC_BODY;
+      function getDefaultOptions() {
+        return {
+          indent: null,
+          base: null,
+          parse: null,
+          comment: false,
+          format: {
+            indent: {
+              style: '    ',
+              base: 0,
+              adjustMultilineComment: false
+            },
+            newline: '\n',
+            space: ' ',
+            json: false,
+            renumber: false,
+            hexadecimal: false,
+            quotes: 'single',
+            escapeless: false,
+            compact: false,
+            parentheses: true,
+            semicolons: true,
+            safeConcatenation: false,
+            preserveBlankLines: false
+          },
+          moz: {
+            comprehensionExpressionStartsWithAssignment: false,
+            starlessGenerator: false
+          },
+          sourceMap: null,
+          sourceMapRoot: null,
+          sourceMapWithCode: false,
+          directive: false,
+          raw: true,
+          verbatim: null,
+          sourceCode: null
+        };
+      }
+      function stringRepeat(str, num) {
+        var result = '';
+        for (num |= 0; num > 0; num >>>= 1, str += str) {
+          if (num & 1) {
+            result += str;
+          }
+        }
+        return result;
+      }
+      isArray = Array.isArray;
+      if (!isArray) {
+        isArray = function isArray(array) {
+          return Object.prototype.toString.call(array) === '[object Array]';
+        };
+      }
+      function hasLineTerminator(str) {
+        return /[\r\n]/g.test(str);
+      }
+      function endsWithLineTerminator(str) {
+        var len = str.length;
+        return len && esutils.code.isLineTerminator(str.charCodeAt(len - 1));
+      }
+      function merge(target, override) {
+        var key;
+        for (key in override) {
+          if (override.hasOwnProperty(key)) {
+            target[key] = override[key];
+          }
+        }
+        return target;
+      }
+      function updateDeeply(target, override) {
+        var key, val;
+        function isHashObject(target) {
+          return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp);
+        }
+        for (key in override) {
+          if (override.hasOwnProperty(key)) {
+            val = override[key];
+            if (isHashObject(val)) {
+              if (isHashObject(target[key])) {
+                updateDeeply(target[key], val);
+              } else {
+                target[key] = updateDeeply({}, val);
+              }
+            } else {
+              target[key] = val;
+            }
+          }
+        }
+        return target;
+      }
+      function generateNumber(value) {
+        var result, point, temp, exponent, pos;
+        if (value !== value) {
+          throw new Error('Numeric literal whose value is NaN');
+        }
+        if (value < 0 || value === 0 && 1 / value < 0) {
+          throw new Error('Numeric literal whose value is negative');
+        }
+        if (value === 1 / 0) {
+          return json ? 'null' : renumber ? '1e400' : '1e+400';
+        }
+        result = '' + value;
+        if (!renumber || result.length < 3) {
+          return result;
+        }
+        point = result.indexOf('.');
+        if (!json && result.charCodeAt(0) === 48 && point === 1) {
+          point = 0;
+          result = result.slice(1);
+        }
+        temp = result;
+        result = result.replace('e+', 'e');
+        exponent = 0;
+        if ((pos = temp.indexOf('e')) > 0) {
+          exponent = +temp.slice(pos + 1);
+          temp = temp.slice(0, pos);
+        }
+        if (point >= 0) {
+          exponent -= temp.length - point - 1;
+          temp = +(temp.slice(0, point) + temp.slice(point + 1)) + '';
+        }
+        pos = 0;
+        while (temp.charCodeAt(temp.length + pos - 1) === 48) {
+          --pos;
+        }
+        if (pos !== 0) {
+          exponent -= pos;
+          temp = temp.slice(0, pos);
+        }
+        if (exponent !== 0) {
+          temp += 'e' + exponent;
+        }
+        if ((temp.length < result.length || hexadecimal && value > 1e12 && Math.floor(value) === value && (temp = '0x' + value.toString(16)).length < result.length) && +temp === value) {
+          result = temp;
+        }
+        return result;
+      }
+      function escapeRegExpCharacter(ch, previousIsBackslash) {
+        if ((ch & ~1) === 8232) {
+          return (previousIsBackslash ? 'u' : '\\u') + (ch === 8232 ? '2028' : '2029');
+        } else if (ch === 10 || ch === 13) {
+          return (previousIsBackslash ? '' : '\\') + (ch === 10 ? 'n' : 'r');
+        }
+        return String.fromCharCode(ch);
+      }
+      function generateRegExp(reg) {
+        var match, result, flags, i, iz, ch, characterInBrack, previousIsBackslash;
+        result = reg.toString();
+        if (reg.source) {
+          match = result.match(/\/([^\/]*)$/);
+          if (!match) {
+            return result;
+          }
+          flags = match[1];
+          result = '';
+          characterInBrack = false;
+          previousIsBackslash = false;
+          for (i = 0, iz = reg.source.length; i < iz; ++i) {
+            ch = reg.source.charCodeAt(i);
+            if (!previousIsBackslash) {
+              if (characterInBrack) {
+                if (ch === 93) {
+                  characterInBrack = false;
+                }
+              } else {
+                if (ch === 47) {
+                  result += '\\';
+                } else if (ch === 91) {
+                  characterInBrack = true;
+                }
+              }
+              result += escapeRegExpCharacter(ch, previousIsBackslash);
+              previousIsBackslash = ch === 92;
+            } else {
+              result += escapeRegExpCharacter(ch, previousIsBackslash);
+              previousIsBackslash = false;
+            }
+          }
+          return '/' + result + '/' + flags;
+        }
+        return result;
+      }
+      function escapeAllowedCharacter(code, next) {
+        var hex;
+        if (code === 8) {
+          return '\\b';
+        }
+        if (code === 12) {
+          return '\\f';
+        }
+        if (code === 9) {
+          return '\\t';
+        }
+        hex = code.toString(16).toUpperCase();
+        if (json || code > 255) {
+          return '\\u' + '0000'.slice(hex.length) + hex;
+        } else if (code === 0 && !esutils.code.isDecimalDigit(next)) {
+          return '\\0';
+        } else if (code === 11) {
+          return '\\x0B';
+        } else {
+          return '\\x' + '00'.slice(hex.length) + hex;
+        }
+      }
+      function escapeDisallowedCharacter(code) {
+        if (code === 92) {
+          return '\\\\';
+        }
+        if (code === 10) {
+          return '\\n';
+        }
+        if (code === 13) {
+          return '\\r';
+        }
+        if (code === 8232) {
+          return '\\u2028';
+        }
+        if (code === 8233) {
+          return '\\u2029';
+        }
+        throw new Error('Incorrectly classified character');
+      }
+      function escapeDirective(str) {
+        var i, iz, code, quote;
+        quote = quotes === 'double' ? '"' : "'";
+        for (i = 0, iz = str.length; i < iz; ++i) {
+          code = str.charCodeAt(i);
+          if (code === 39) {
+            quote = '"';
+            break;
+          } else if (code === 34) {
+            quote = "'";
+            break;
+          } else if (code === 92) {
+            ++i;
+          }
+        }
+        return quote + str + quote;
+      }
+      function escapeString(str) {
+        var result = '', i, len, code, singleQuotes = 0, doubleQuotes = 0, single, quote;
+        for (i = 0, len = str.length; i < len; ++i) {
+          code = str.charCodeAt(i);
+          if (code === 39) {
+            ++singleQuotes;
+          } else if (code === 34) {
+            ++doubleQuotes;
+          } else if (code === 47 && json) {
+            result += '\\';
+          } else if (esutils.code.isLineTerminator(code) || code === 92) {
+            result += escapeDisallowedCharacter(code);
+            continue;
+          } else if (!esutils.code.isIdentifierPartES5(code) && (json && code < 32 || !json && !escapeless && (code < 32 || code > 126))) {
+            result += escapeAllowedCharacter(code, str.charCodeAt(i + 1));
+            continue;
+          }
+          result += String.fromCharCode(code);
+        }
+        single = !(quotes === 'double' || quotes === 'auto' && doubleQuotes < singleQuotes);
+        quote = single ? "'" : '"';
+        if (!(single ? singleQuotes : doubleQuotes)) {
+          return quote + result + quote;
+        }
+        str = result;
+        result = quote;
+        for (i = 0, len = str.length; i < len; ++i) {
+          code = str.charCodeAt(i);
+          if (code === 39 && single || code === 34 && !single) {
+            result += '\\';
+          }
+          result += String.fromCharCode(code);
+        }
+        return result + quote;
+      }
+      function flattenToString(arr) {
+        var i, iz, elem, result = '';
+        for (i = 0, iz = arr.length; i < iz; ++i) {
+          elem = arr[i];
+          result += isArray(elem) ? flattenToString(elem) : elem;
+        }
+        return result;
+      }
+      function toSourceNodeWhenNeeded(generated, node) {
+        if (!sourceMap) {
+          if (isArray(generated)) {
+            return flattenToString(generated);
+          } else {
+            return generated;
+          }
+        }
+        if (node == null) {
+          if (generated instanceof SourceNode) {
+            return generated;
+          } else {
+            node = {};
+          }
+        }
+        if (node.loc == null) {
+          return new SourceNode(null, null, sourceMap, generated, node.name || null);
+        }
+        return new SourceNode(node.loc.start.line, node.loc.start.column, sourceMap === true ? node.loc.source || null : sourceMap, generated, node.name || null);
+      }
+      function noEmptySpace() {
+        return space ? space : ' ';
+      }
+      function join(left, right) {
+        var leftSource, rightSource, leftCharCode, rightCharCode;
+        leftSource = toSourceNodeWhenNeeded(left).toString();
+        if (leftSource.length === 0) {
+          return [right];
+        }
+        rightSource = toSourceNodeWhenNeeded(right).toString();
+        if (rightSource.length === 0) {
+          return [left];
+        }
+        leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
+        rightCharCode = rightSource.charCodeAt(0);
+        if ((leftCharCode === 43 || leftCharCode === 45) && leftCharCode === rightCharCode || esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode) || leftCharCode === 47 && rightCharCode === 105) {
+          return [
+            left,
+            noEmptySpace(),
+            right
+          ];
+        } else if (esutils.code.isWhiteSpace(leftCharCode) || esutils.code.isLineTerminator(leftCharCode) || esutils.code.isWhiteSpace(rightCharCode) || esutils.code.isLineTerminator(rightCharCode)) {
+          return [
+            left,
+            right
+          ];
+        }
+        return [
+          left,
+          space,
+          right
+        ];
+      }
+      function addIndent(stmt) {
+        return [
+          base,
+          stmt
+        ];
+      }
+      function withIndent(fn) {
+        var previousBase;
+        previousBase = base;
+        base += indent;
+        fn(base);
+        base = previousBase;
+      }
+      function calculateSpaces(str) {
+        var i;
+        for (i = str.length - 1; i >= 0; --i) {
+          if (esutils.code.isLineTerminator(str.charCodeAt(i))) {
+            break;
+          }
+        }
+        return str.length - 1 - i;
+      }
+      function adjustMultilineComment(value, specialBase) {
+        var array, i, len, line, j, spaces, previousBase, sn;
+        array = value.split(/\r\n|[\r\n]/);
+        spaces = Number.MAX_VALUE;
+        for (i = 1, len = array.length; i < len; ++i) {
+          line = array[i];
+          j = 0;
+          while (j < line.length && esutils.code.isWhiteSpace(line.charCodeAt(j))) {
+            ++j;
+          }
+          if (spaces > j) {
+            spaces = j;
+          }
+        }
+        if (typeof specialBase !== 'undefined') {
+          previousBase = base;
+          if (array[1][spaces] === '*') {
+            specialBase += ' ';
+          }
+          base = specialBase;
+        } else {
+          if (spaces & 1) {
+            --spaces;
+          }
+          previousBase = base;
+        }
+        for (i = 1, len = array.length; i < len; ++i) {
+          sn = toSourceNodeWhenNeeded(addIndent(array[i].slice(spaces)));
+          array[i] = sourceMap ? sn.join('') : sn;
+        }
+        base = previousBase;
+        return array.join('\n');
+      }
+      function generateComment(comment, specialBase) {
+        if (comment.type === 'Line') {
+          if (endsWithLineTerminator(comment.value)) {
+            return '//' + comment.value;
+          } else {
+            var result = '//' + comment.value;
+            if (!preserveBlankLines) {
+              result += '\n';
+            }
+            return result;
+          }
+        }
+        if (extra.format.indent.adjustMultilineComment && /[\n\r]/.test(comment.value)) {
+          return adjustMultilineComment('/*' + comment.value + '*/', specialBase);
+        }
+        return '/*' + comment.value + '*/';
+      }
+      function addComments(stmt, result) {
+        var i, len, comment, save, tailingToStatement, specialBase, fragment, extRange, range, prevRange, prefix, infix, suffix, count;
+        if (stmt.leadingComments && stmt.leadingComments.length > 0) {
+          save = result;
+          if (preserveBlankLines) {
+            comment = stmt.leadingComments[0];
+            result = [];
+            extRange = comment.extendedRange;
+            range = comment.range;
+            prefix = sourceCode.substring(extRange[0], range[0]);
+            count = (prefix.match(/\n/g) || []).length;
+            if (count > 0) {
+              result.push(stringRepeat('\n', count));
+              result.push(addIndent(generateComment(comment)));
+            } else {
+              result.push(prefix);
+              result.push(generateComment(comment));
+            }
+            prevRange = range;
+            for (i = 1, len = stmt.leadingComments.length; i < len; i++) {
+              comment = stmt.leadingComments[i];
+              range = comment.range;
+              infix = sourceCode.substring(prevRange[1], range[0]);
+              count = (infix.match(/\n/g) || []).length;
+              result.push(stringRepeat('\n', count));
+              result.push(addIndent(generateComment(comment)));
+              prevRange = range;
+            }
+            suffix = sourceCode.substring(range[1], extRange[1]);
+            count = (suffix.match(/\n/g) || []).length;
+            result.push(stringRepeat('\n', count));
+          } else {
+            comment = stmt.leadingComments[0];
+            result = [];
+            if (safeConcatenation && stmt.type === Syntax.Program && stmt.body.length === 0) {
+              result.push('\n');
+            }
+            result.push(generateComment(comment));
+            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+              result.push('\n');
+            }
+            for (i = 1, len = stmt.leadingComments.length; i < len; ++i) {
+              comment = stmt.leadingComments[i];
+              fragment = [generateComment(comment)];
+              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
+                fragment.push('\n');
+              }
+              result.push(addIndent(fragment));
+            }
+          }
+          result.push(addIndent(save));
+        }
+        if (stmt.trailingComments) {
+          if (preserveBlankLines) {
+            comment = stmt.trailingComments[0];
+            extRange = comment.extendedRange;
+            range = comment.range;
+            prefix = sourceCode.substring(extRange[0], range[0]);
+            count = (prefix.match(/\n/g) || []).length;
+            if (count > 0) {
+              result.push(stringRepeat('\n', count));
+              result.push(addIndent(generateComment(comment)));
+            } else {
+              result.push(prefix);
+              result.push(generateComment(comment));
+            }
+          } else {
+            tailingToStatement = !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
+            specialBase = stringRepeat(' ', calculateSpaces(toSourceNodeWhenNeeded([
+              base,
+              result,
+              indent
+            ]).toString()));
+            for (i = 0, len = stmt.trailingComments.length; i < len; ++i) {
+              comment = stmt.trailingComments[i];
+              if (tailingToStatement) {
+                if (i === 0) {
+                  result = [
+                    result,
+                    indent
+                  ];
+                } else {
+                  result = [
+                    result,
+                    specialBase
+                  ];
+                }
+                result.push(generateComment(comment, specialBase));
+              } else {
+                result = [
+                  result,
+                  addIndent(generateComment(comment))
+                ];
+              }
+              if (i !== len - 1 && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+                result = [
+                  result,
+                  '\n'
+                ];
+              }
+            }
+          }
+        }
+        return result;
+      }
+      function generateBlankLines(start, end, result) {
+        var j, newlineCount = 0;
+        for (j = start; j < end; j++) {
+          if (sourceCode[j] === '\n') {
+            newlineCount++;
+          }
+        }
+        for (j = 1; j < newlineCount; j++) {
+          result.push(newline);
+        }
+      }
+      function parenthesize(text, current, should) {
+        if (current < should) {
+          return [
+            '(',
+            text,
+            ')'
+          ];
+        }
+        return text;
+      }
+      function generateVerbatimString(string) {
+        var i, iz, result;
+        result = string.split(/\r\n|\n/);
+        for (i = 1, iz = result.length; i < iz; i++) {
+          result[i] = newline + base + result[i];
+        }
+        return result;
+      }
+      function generateVerbatim(expr, precedence) {
+        var verbatim, result, prec;
+        verbatim = expr[extra.verbatim];
+        if (typeof verbatim === 'string') {
+          result = parenthesize(generateVerbatimString(verbatim), Precedence.Sequence, precedence);
+        } else {
+          result = generateVerbatimString(verbatim.content);
+          prec = verbatim.precedence != null ? verbatim.precedence : Precedence.Sequence;
+          result = parenthesize(result, prec, precedence);
+        }
+        return toSourceNodeWhenNeeded(result, expr);
+      }
+      function CodeGenerator() {
+      }
+      CodeGenerator.prototype.maybeBlock = function (stmt, flags) {
+        var result, noLeadingComment, that = this;
+        noLeadingComment = !extra.comment || !stmt.leadingComments;
+        if (stmt.type === Syntax.BlockStatement && noLeadingComment) {
+          return [
+            space,
+            this.generateStatement(stmt, flags)
+          ];
+        }
+        if (stmt.type === Syntax.EmptyStatement && noLeadingComment) {
+          return ';';
+        }
+        withIndent(function () {
+          result = [
+            newline,
+            addIndent(that.generateStatement(stmt, flags))
+          ];
+        });
+        return result;
+      };
+      CodeGenerator.prototype.maybeBlockSuffix = function (stmt, result) {
+        var ends = endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
+        if (stmt.type === Syntax.BlockStatement && (!extra.comment || !stmt.leadingComments) && !ends) {
+          return [
+            result,
+            space
+          ];
+        }
+        if (ends) {
+          return [
+            result,
+            base
+          ];
+        }
+        return [
+          result,
+          newline,
+          base
+        ];
+      };
+      function generateIdentifier(node) {
+        return toSourceNodeWhenNeeded(node.name, node);
+      }
+      function generateAsyncPrefix(node, spaceRequired) {
+        return node.async ? 'async' + (spaceRequired ? noEmptySpace() : space) : '';
+      }
+      function generateStarSuffix(node) {
+        var isGenerator = node.generator && !extra.moz.starlessGenerator;
+        return isGenerator ? '*' + space : '';
+      }
+      function generateMethodPrefix(prop) {
+        var func = prop.value;
+        if (func.async) {
+          return generateAsyncPrefix(func, !prop.computed);
+        } else {
+          return generateStarSuffix(func) ? '*' : '';
+        }
+      }
+      CodeGenerator.prototype.generatePattern = function (node, precedence, flags) {
+        if (node.type === Syntax.Identifier) {
+          return generateIdentifier(node);
+        }
+        return this.generateExpression(node, precedence, flags);
+      };
+      CodeGenerator.prototype.generateFunctionParams = function (node) {
+        var i, iz, result, hasDefault;
+        hasDefault = false;
+        if (node.type === Syntax.ArrowFunctionExpression && !node.rest && (!node.defaults || node.defaults.length === 0) && node.params.length === 1 && node.params[0].type === Syntax.Identifier) {
+          result = [
+            generateAsyncPrefix(node, true),
+            generateIdentifier(node.params[0])
+          ];
+        } else {
+          result = node.type === Syntax.ArrowFunctionExpression ? [generateAsyncPrefix(node, false)] : [];
+          result.push('(');
+          if (node.defaults) {
+            hasDefault = true;
+          }
+          for (i = 0, iz = node.params.length; i < iz; ++i) {
+            if (hasDefault && node.defaults[i]) {
+              result.push(this.generateAssignment(node.params[i], node.defaults[i], '=', Precedence.Assignment, E_TTT));
+            } else {
+              result.push(this.generatePattern(node.params[i], Precedence.Assignment, E_TTT));
+            }
+            if (i + 1 < iz) {
+              result.push(',' + space);
+            }
+          }
+          if (node.rest) {
+            if (node.params.length) {
+              result.push(',' + space);
+            }
+            result.push('...');
+            result.push(generateIdentifier(node.rest));
+          }
+          result.push(')');
+        }
+        return result;
+      };
+      CodeGenerator.prototype.generateFunctionBody = function (node) {
+        var result, expr;
+        result = this.generateFunctionParams(node);
+        if (node.type === Syntax.ArrowFunctionExpression) {
+          result.push(space);
+          result.push('=>');
+        }
+        if (node.expression) {
+          result.push(space);
+          expr = this.generateExpression(node.body, Precedence.Assignment, E_TTT);
+          if (expr.toString().charAt(0) === '{') {
+            expr = [
+              '(',
+              expr,
+              ')'
+            ];
+          }
+          result.push(expr);
+        } else {
+          result.push(this.maybeBlock(node.body, S_TTFF));
+        }
+        return result;
+      };
+      CodeGenerator.prototype.generateIterationForStatement = function (operator, stmt, flags) {
+        var result = ['for' + space + '('], that = this;
+        withIndent(function () {
+          if (stmt.left.type === Syntax.VariableDeclaration) {
+            withIndent(function () {
+              result.push(stmt.left.kind + noEmptySpace());
+              result.push(that.generateStatement(stmt.left.declarations[0], S_FFFF));
+            });
+          } else {
+            result.push(that.generateExpression(stmt.left, Precedence.Call, E_TTT));
+          }
+          result = join(result, operator);
+          result = [
+            join(result, that.generateExpression(stmt.right, Precedence.Sequence, E_TTT)),
+            ')'
+          ];
+        });
+        result.push(this.maybeBlock(stmt.body, flags));
+        return result;
+      };
+      CodeGenerator.prototype.generatePropertyKey = function (expr, computed, value) {
+        var result = [];
+        if (computed) {
+          result.push('[');
+        }
+        if (value.type === 'AssignmentPattern') {
+          result.push(this.AssignmentPattern(value, Precedence.Sequence, E_TTT));
+        } else {
+          result.push(this.generateExpression(expr, Precedence.Sequence, E_TTT));
+        }
+        if (computed) {
+          result.push(']');
+        }
+        return result;
+      };
+      CodeGenerator.prototype.generateAssignment = function (left, right, operator, precedence, flags) {
+        if (Precedence.Assignment < precedence) {
+          flags |= F_ALLOW_IN;
+        }
+        return parenthesize([
+          this.generateExpression(left, Precedence.Call, flags),
+          space + operator + space,
+          this.generateExpression(right, Precedence.Assignment, flags)
+        ], Precedence.Assignment, precedence);
+      };
+      CodeGenerator.prototype.semicolon = function (flags) {
+        if (!semicolons && flags & F_SEMICOLON_OPT) {
+          return '';
+        }
+        return ';';
+      };
+      CodeGenerator.Statement = {
+        BlockStatement: function (stmt, flags) {
+          var range, content, result = [
+              '{',
+              newline
+            ], that = this;
+          withIndent(function () {
+            if (stmt.body.length === 0 && preserveBlankLines) {
+              range = stmt.range;
+              if (range[1] - range[0] > 2) {
+                content = sourceCode.substring(range[0] + 1, range[1] - 1);
+                if (content[0] === '\n') {
+                  result = ['{'];
+                }
+                result.push(content);
+              }
+            }
+            var i, iz, fragment, bodyFlags;
+            bodyFlags = S_TFFF;
+            if (flags & F_FUNC_BODY) {
+              bodyFlags |= F_DIRECTIVE_CTX;
+            }
+            for (i = 0, iz = stmt.body.length; i < iz; ++i) {
+              if (preserveBlankLines) {
+                if (i === 0) {
+                  if (stmt.body[0].leadingComments) {
+                    range = stmt.body[0].leadingComments[0].extendedRange;
+                    content = sourceCode.substring(range[0], range[1]);
+                    if (content[0] === '\n') {
+                      result = ['{'];
+                    }
+                  }
+                  if (!stmt.body[0].leadingComments) {
+                    generateBlankLines(stmt.range[0], stmt.body[0].range[0], result);
+                  }
+                }
+                if (i > 0) {
+                  if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
+                    generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
+                  }
+                }
+              }
+              if (i === iz - 1) {
+                bodyFlags |= F_SEMICOLON_OPT;
+              }
+              if (stmt.body[i].leadingComments && preserveBlankLines) {
+                fragment = that.generateStatement(stmt.body[i], bodyFlags);
+              } else {
+                fragment = addIndent(that.generateStatement(stmt.body[i], bodyFlags));
+              }
+              result.push(fragment);
+              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
+                if (preserveBlankLines && i < iz - 1) {
+                  if (!stmt.body[i + 1].leadingComments) {
+                    result.push(newline);
+                  }
+                } else {
+                  result.push(newline);
+                }
+              }
+              if (preserveBlankLines) {
+                if (i === iz - 1) {
+                  if (!stmt.body[i].trailingComments) {
+                    generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
+                  }
+                }
+              }
+            }
+          });
+          result.push(addIndent('}'));
+          return result;
+        },
+        BreakStatement: function (stmt, flags) {
+          if (stmt.label) {
+            return 'break ' + stmt.label.name + this.semicolon(flags);
+          }
+          return 'break' + this.semicolon(flags);
+        },
+        ContinueStatement: function (stmt, flags) {
+          if (stmt.label) {
+            return 'continue ' + stmt.label.name + this.semicolon(flags);
+          }
+          return 'continue' + this.semicolon(flags);
+        },
+        ClassBody: function (stmt, flags) {
+          var result = [
+              '{',
+              newline
+            ], that = this;
+          withIndent(function (indent) {
+            var i, iz;
+            for (i = 0, iz = stmt.body.length; i < iz; ++i) {
+              result.push(indent);
+              result.push(that.generateExpression(stmt.body[i], Precedence.Sequence, E_TTT));
+              if (i + 1 < iz) {
+                result.push(newline);
+              }
+            }
+          });
+          if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+            result.push(newline);
+          }
+          result.push(base);
+          result.push('}');
+          return result;
+        },
+        ClassDeclaration: function (stmt, flags) {
+          var result, fragment;
+          result = ['class'];
+          if (stmt.id) {
+            result = join(result, this.generateExpression(stmt.id, Precedence.Sequence, E_TTT));
+          }
+          if (stmt.superClass) {
+            fragment = join('extends', this.generateExpression(stmt.superClass, Precedence.Assignment, E_TTT));
+            result = join(result, fragment);
+          }
+          result.push(space);
+          result.push(this.generateStatement(stmt.body, S_TFFT));
+          return result;
+        },
+        DirectiveStatement: function (stmt, flags) {
+          if (extra.raw && stmt.raw) {
+            return stmt.raw + this.semicolon(flags);
+          }
+          return escapeDirective(stmt.directive) + this.semicolon(flags);
+        },
+        DoWhileStatement: function (stmt, flags) {
+          var result = join('do', this.maybeBlock(stmt.body, S_TFFF));
+          result = this.maybeBlockSuffix(stmt.body, result);
+          return join(result, [
+            'while' + space + '(',
+            this.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
+            ')' + this.semicolon(flags)
+          ]);
+        },
+        CatchClause: function (stmt, flags) {
+          var result, that = this;
+          withIndent(function () {
+            var guard;
+            result = [
+              'catch' + space + '(',
+              that.generateExpression(stmt.param, Precedence.Sequence, E_TTT),
+              ')'
+            ];
+            if (stmt.guard) {
+              guard = that.generateExpression(stmt.guard, Precedence.Sequence, E_TTT);
+              result.splice(2, 0, ' if ', guard);
+            }
+          });
+          result.push(this.maybeBlock(stmt.body, S_TFFF));
+          return result;
+        },
+        DebuggerStatement: function (stmt, flags) {
+          return 'debugger' + this.semicolon(flags);
+        },
+        EmptyStatement: function (stmt, flags) {
+          return ';';
+        },
+        ExportDefaultDeclaration: function (stmt, flags) {
+          var result = ['export'], bodyFlags;
+          bodyFlags = flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF;
+          result = join(result, 'default');
+          if (isStatement(stmt.declaration)) {
+            result = join(result, this.generateStatement(stmt.declaration, bodyFlags));
+          } else {
+            result = join(result, this.generateExpression(stmt.declaration, Precedence.Assignment, E_TTT) + this.semicolon(flags));
+          }
+          return result;
+        },
+        ExportNamedDeclaration: function (stmt, flags) {
+          var result = ['export'], bodyFlags, that = this;
+          bodyFlags = flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF;
+          if (stmt.declaration) {
+            return join(result, this.generateStatement(stmt.declaration, bodyFlags));
+          }
+          if (stmt.specifiers) {
+            if (stmt.specifiers.length === 0) {
+              result = join(result, '{' + space + '}');
+            } else if (stmt.specifiers[0].type === Syntax.ExportBatchSpecifier) {
+              result = join(result, this.generateExpression(stmt.specifiers[0], Precedence.Sequence, E_TTT));
+            } else {
+              result = join(result, '{');
+              withIndent(function (indent) {
+                var i, iz;
+                result.push(newline);
+                for (i = 0, iz = stmt.specifiers.length; i < iz; ++i) {
+                  result.push(indent);
+                  result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
+                  if (i + 1 < iz) {
+                    result.push(',' + newline);
+                  }
+                }
+              });
+              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+                result.push(newline);
+              }
+              result.push(base + '}');
+            }
+            if (stmt.source) {
+              result = join(result, [
+                'from' + space,
+                this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
+                this.semicolon(flags)
+              ]);
+            } else {
+              result.push(this.semicolon(flags));
+            }
+          }
+          return result;
+        },
+        ExportAllDeclaration: function (stmt, flags) {
+          return [
+            'export' + space,
+            '*' + space,
+            'from' + space,
+            this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
+            this.semicolon(flags)
+          ];
+        },
+        ExpressionStatement: function (stmt, flags) {
+          var result, fragment;
+          function isClassPrefixed(fragment) {
+            var code;
+            if (fragment.slice(0, 5) !== 'class') {
+              return false;
+            }
+            code = fragment.charCodeAt(5);
+            return code === 123 || esutils.code.isWhiteSpace(code) || esutils.code.isLineTerminator(code);
+          }
+          function isFunctionPrefixed(fragment) {
+            var code;
+            if (fragment.slice(0, 8) !== 'function') {
+              return false;
+            }
+            code = fragment.charCodeAt(8);
+            return code === 40 || esutils.code.isWhiteSpace(code) || code === 42 || esutils.code.isLineTerminator(code);
+          }
+          function isAsyncPrefixed(fragment) {
+            var code, i, iz;
+            if (fragment.slice(0, 5) !== 'async') {
+              return false;
+            }
+            if (!esutils.code.isWhiteSpace(fragment.charCodeAt(5))) {
+              return false;
+            }
+            for (i = 6, iz = fragment.length; i < iz; ++i) {
+              if (!esutils.code.isWhiteSpace(fragment.charCodeAt(i))) {
+                break;
+              }
+            }
+            if (i === iz) {
+              return false;
+            }
+            if (fragment.slice(i, i + 8) !== 'function') {
+              return false;
+            }
+            code = fragment.charCodeAt(i + 8);
+            return code === 40 || esutils.code.isWhiteSpace(code) || code === 42 || esutils.code.isLineTerminator(code);
+          }
+          result = [this.generateExpression(stmt.expression, Precedence.Sequence, E_TTT)];
+          fragment = toSourceNodeWhenNeeded(result).toString();
+          if (fragment.charCodeAt(0) === 123 || isClassPrefixed(fragment) || isFunctionPrefixed(fragment) || isAsyncPrefixed(fragment) || directive && flags & F_DIRECTIVE_CTX && stmt.expression.type === Syntax.Literal && typeof stmt.expression.value === 'string') {
+            result = [
+              '(',
+              result,
+              ')' + this.semicolon(flags)
+            ];
+          } else {
+            result.push(this.semicolon(flags));
+          }
+          return result;
+        },
+        ImportDeclaration: function (stmt, flags) {
+          var result, cursor, that = this;
+          if (stmt.specifiers.length === 0) {
+            return [
+              'import',
+              space,
+              this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
+              this.semicolon(flags)
+            ];
+          }
+          result = ['import'];
+          cursor = 0;
+          if (stmt.specifiers[cursor].type === Syntax.ImportDefaultSpecifier) {
+            result = join(result, [this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)]);
+            ++cursor;
+          }
+          if (stmt.specifiers[cursor]) {
+            if (cursor !== 0) {
+              result.push(',');
+            }
+            if (stmt.specifiers[cursor].type === Syntax.ImportNamespaceSpecifier) {
+              result = join(result, [
+                space,
+                this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
+              ]);
+            } else {
+              result.push(space + '{');
+              if (stmt.specifiers.length - cursor === 1) {
+                result.push(space);
+                result.push(this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT));
+                result.push(space + '}' + space);
+              } else {
+                withIndent(function (indent) {
+                  var i, iz;
+                  result.push(newline);
+                  for (i = cursor, iz = stmt.specifiers.length; i < iz; ++i) {
+                    result.push(indent);
+                    result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
+                    if (i + 1 < iz) {
+                      result.push(',' + newline);
+                    }
+                  }
+                });
+                if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+                  result.push(newline);
+                }
+                result.push(base + '}' + space);
+              }
+            }
+          }
+          result = join(result, [
+            'from' + space,
+            this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
+            this.semicolon(flags)
+          ]);
+          return result;
+        },
+        VariableDeclarator: function (stmt, flags) {
+          var itemFlags = flags & F_ALLOW_IN ? E_TTT : E_FTT;
+          if (stmt.init) {
+            return [
+              this.generateExpression(stmt.id, Precedence.Assignment, itemFlags),
+              space,
+              '=',
+              space,
+              this.generateExpression(stmt.init, Precedence.Assignment, itemFlags)
+            ];
+          }
+          return this.generatePattern(stmt.id, Precedence.Assignment, itemFlags);
+        },
+        VariableDeclaration: function (stmt, flags) {
+          var result, i, iz, node, bodyFlags, that = this;
+          result = [stmt.kind];
+          bodyFlags = flags & F_ALLOW_IN ? S_TFFF : S_FFFF;
+          function block() {
+            node = stmt.declarations[0];
+            if (extra.comment && node.leadingComments) {
+              result.push('\n');
+              result.push(addIndent(that.generateStatement(node, bodyFlags)));
+            } else {
+              result.push(noEmptySpace());
+              result.push(that.generateStatement(node, bodyFlags));
+            }
+            for (i = 1, iz = stmt.declarations.length; i < iz; ++i) {
+              node = stmt.declarations[i];
+              if (extra.comment && node.leadingComments) {
+                result.push(',' + newline);
+                result.push(addIndent(that.generateStatement(node, bodyFlags)));
+              } else {
+                result.push(',' + space);
+                result.push(that.generateStatement(node, bodyFlags));
+              }
+            }
+          }
+          if (stmt.declarations.length > 1) {
+            withIndent(block);
+          } else {
+            block();
+          }
+          result.push(this.semicolon(flags));
+          return result;
+        },
+        ThrowStatement: function (stmt, flags) {
+          return [
+            join('throw', this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)),
+            this.semicolon(flags)
+          ];
+        },
+        TryStatement: function (stmt, flags) {
+          var result, i, iz, guardedHandlers;
+          result = [
+            'try',
+            this.maybeBlock(stmt.block, S_TFFF)
+          ];
+          result = this.maybeBlockSuffix(stmt.block, result);
+          if (stmt.handlers) {
+            for (i = 0, iz = stmt.handlers.length; i < iz; ++i) {
+              result = join(result, this.generateStatement(stmt.handlers[i], S_TFFF));
+              if (stmt.finalizer || i + 1 !== iz) {
+                result = this.maybeBlockSuffix(stmt.handlers[i].body, result);
+              }
+            }
+          } else {
+            guardedHandlers = stmt.guardedHandlers || [];
+            for (i = 0, iz = guardedHandlers.length; i < iz; ++i) {
+              result = join(result, this.generateStatement(guardedHandlers[i], S_TFFF));
+              if (stmt.finalizer || i + 1 !== iz) {
+                result = this.maybeBlockSuffix(guardedHandlers[i].body, result);
+              }
+            }
+            if (stmt.handler) {
+              if (isArray(stmt.handler)) {
+                for (i = 0, iz = stmt.handler.length; i < iz; ++i) {
+                  result = join(result, this.generateStatement(stmt.handler[i], S_TFFF));
+                  if (stmt.finalizer || i + 1 !== iz) {
+                    result = this.maybeBlockSuffix(stmt.handler[i].body, result);
+                  }
+                }
+              } else {
+                result = join(result, this.generateStatement(stmt.handler, S_TFFF));
+                if (stmt.finalizer) {
+                  result = this.maybeBlockSuffix(stmt.handler.body, result);
+                }
+              }
+            }
+          }
+          if (stmt.finalizer) {
+            result = join(result, [
+              'finally',
+              this.maybeBlock(stmt.finalizer, S_TFFF)
+            ]);
+          }
+          return result;
+        },
+        SwitchStatement: function (stmt, flags) {
+          var result, fragment, i, iz, bodyFlags, that = this;
+          withIndent(function () {
+            result = [
+              'switch' + space + '(',
+              that.generateExpression(stmt.discriminant, Precedence.Sequence, E_TTT),
+              ')' + space + '{' + newline
+            ];
+          });
+          if (stmt.cases) {
+            bodyFlags = S_TFFF;
+            for (i = 0, iz = stmt.cases.length; i < iz; ++i) {
+              if (i === iz - 1) {
+                bodyFlags |= F_SEMICOLON_OPT;
+              }
+              fragment = addIndent(this.generateStatement(stmt.cases[i], bodyFlags));
+              result.push(fragment);
+              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
+                result.push(newline);
+              }
+            }
+          }
+          result.push(addIndent('}'));
+          return result;
+        },
+        SwitchCase: function (stmt, flags) {
+          var result, fragment, i, iz, bodyFlags, that = this;
+          withIndent(function () {
+            if (stmt.test) {
+              result = [
+                join('case', that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)),
+                ':'
+              ];
+            } else {
+              result = ['default:'];
+            }
+            i = 0;
+            iz = stmt.consequent.length;
+            if (iz && stmt.consequent[0].type === Syntax.BlockStatement) {
+              fragment = that.maybeBlock(stmt.consequent[0], S_TFFF);
+              result.push(fragment);
+              i = 1;
+            }
+            if (i !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+              result.push(newline);
+            }
+            bodyFlags = S_TFFF;
+            for (; i < iz; ++i) {
+              if (i === iz - 1 && flags & F_SEMICOLON_OPT) {
+                bodyFlags |= F_SEMICOLON_OPT;
+              }
+              fragment = addIndent(that.generateStatement(stmt.consequent[i], bodyFlags));
+              result.push(fragment);
+              if (i + 1 !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
+                result.push(newline);
+              }
+            }
+          });
+          return result;
+        },
+        IfStatement: function (stmt, flags) {
+          var result, bodyFlags, semicolonOptional, that = this;
+          withIndent(function () {
+            result = [
+              'if' + space + '(',
+              that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
+              ')'
+            ];
+          });
+          semicolonOptional = flags & F_SEMICOLON_OPT;
+          bodyFlags = S_TFFF;
+          if (semicolonOptional) {
+            bodyFlags |= F_SEMICOLON_OPT;
+          }
+          if (stmt.alternate) {
+            result.push(this.maybeBlock(stmt.consequent, S_TFFF));
+            result = this.maybeBlockSuffix(stmt.consequent, result);
+            if (stmt.alternate.type === Syntax.IfStatement) {
+              result = join(result, [
+                'else ',
+                this.generateStatement(stmt.alternate, bodyFlags)
+              ]);
+            } else {
+              result = join(result, join('else', this.maybeBlock(stmt.alternate, bodyFlags)));
+            }
+          } else {
+            result.push(this.maybeBlock(stmt.consequent, bodyFlags));
+          }
+          return result;
+        },
+        ForStatement: function (stmt, flags) {
+          var result, that = this;
+          withIndent(function () {
+            result = ['for' + space + '('];
+            if (stmt.init) {
+              if (stmt.init.type === Syntax.VariableDeclaration) {
+                result.push(that.generateStatement(stmt.init, S_FFFF));
+              } else {
+                result.push(that.generateExpression(stmt.init, Precedence.Sequence, E_FTT));
+                result.push(';');
+              }
+            } else {
+              result.push(';');
+            }
+            if (stmt.test) {
+              result.push(space);
+              result.push(that.generateExpression(stmt.test, Precedence.Sequence, E_TTT));
+              result.push(';');
+            } else {
+              result.push(';');
+            }
+            if (stmt.update) {
+              result.push(space);
+              result.push(that.generateExpression(stmt.update, Precedence.Sequence, E_TTT));
+              result.push(')');
+            } else {
+              result.push(')');
+            }
+          });
+          result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
+          return result;
+        },
+        ForInStatement: function (stmt, flags) {
+          return this.generateIterationForStatement('in', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
+        },
+        ForOfStatement: function (stmt, flags) {
+          return this.generateIterationForStatement('of', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
+        },
+        LabeledStatement: function (stmt, flags) {
+          return [
+            stmt.label.name + ':',
+            this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)
+          ];
+        },
+        Program: function (stmt, flags) {
+          var result, fragment, i, iz, bodyFlags;
+          iz = stmt.body.length;
+          result = [safeConcatenation && iz > 0 ? '\n' : ''];
+          bodyFlags = S_TFTF;
+          for (i = 0; i < iz; ++i) {
+            if (!safeConcatenation && i === iz - 1) {
+              bodyFlags |= F_SEMICOLON_OPT;
+            }
+            if (preserveBlankLines) {
+              if (i === 0) {
+                if (!stmt.body[0].leadingComments) {
+                  generateBlankLines(stmt.range[0], stmt.body[i].range[0], result);
+                }
+              }
+              if (i > 0) {
+                if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
+                  generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
+                }
+              }
+            }
+            fragment = addIndent(this.generateStatement(stmt.body[i], bodyFlags));
+            result.push(fragment);
+            if (i + 1 < iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
+              if (preserveBlankLines) {
+                if (!stmt.body[i + 1].leadingComments) {
+                  result.push(newline);
+                }
+              } else {
+                result.push(newline);
+              }
+            }
+            if (preserveBlankLines) {
+              if (i === iz - 1) {
+                if (!stmt.body[i].trailingComments) {
+                  generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
+                }
+              }
+            }
+          }
+          return result;
+        },
+        FunctionDeclaration: function (stmt, flags) {
+          return [
+            generateAsyncPrefix(stmt, true),
+            'function',
+            generateStarSuffix(stmt) || noEmptySpace(),
+            stmt.id ? generateIdentifier(stmt.id) : '',
+            this.generateFunctionBody(stmt)
+          ];
+        },
+        ReturnStatement: function (stmt, flags) {
+          if (stmt.argument) {
+            return [
+              join('return', this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)),
+              this.semicolon(flags)
+            ];
+          }
+          return ['return' + this.semicolon(flags)];
+        },
+        WhileStatement: function (stmt, flags) {
+          var result, that = this;
+          withIndent(function () {
+            result = [
+              'while' + space + '(',
+              that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
+              ')'
+            ];
+          });
+          result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
+          return result;
+        },
+        WithStatement: function (stmt, flags) {
+          var result, that = this;
+          withIndent(function () {
+            result = [
+              'with' + space + '(',
+              that.generateExpression(stmt.object, Precedence.Sequence, E_TTT),
+              ')'
+            ];
+          });
+          result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
+          return result;
+        }
+      };
+      merge(CodeGenerator.prototype, CodeGenerator.Statement);
+      CodeGenerator.Expression = {
+        SequenceExpression: function (expr, precedence, flags) {
+          var result, i, iz;
+          if (Precedence.Sequence < precedence) {
+            flags |= F_ALLOW_IN;
+          }
+          result = [];
+          for (i = 0, iz = expr.expressions.length; i < iz; ++i) {
+            result.push(this.generateExpression(expr.expressions[i], Precedence.Assignment, flags));
+            if (i + 1 < iz) {
+              result.push(',' + space);
+            }
+          }
+          return parenthesize(result, Precedence.Sequence, precedence);
+        },
+        AssignmentExpression: function (expr, precedence, flags) {
+          return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags);
+        },
+        ArrowFunctionExpression: function (expr, precedence, flags) {
+          return parenthesize(this.generateFunctionBody(expr), Precedence.ArrowFunction, precedence);
+        },
+        ConditionalExpression: function (expr, precedence, flags) {
+          if (Precedence.Conditional < precedence) {
+            flags |= F_ALLOW_IN;
+          }
+          return parenthesize([
+            this.generateExpression(expr.test, Precedence.LogicalOR, flags),
+            space + '?' + space,
+            this.generateExpression(expr.consequent, Precedence.Assignment, flags),
+            space + ':' + space,
+            this.generateExpression(expr.alternate, Precedence.Assignment, flags)
+          ], Precedence.Conditional, precedence);
+        },
+        LogicalExpression: function (expr, precedence, flags) {
+          return this.BinaryExpression(expr, precedence, flags);
+        },
+        BinaryExpression: function (expr, precedence, flags) {
+          var result, currentPrecedence, fragment, leftSource;
+          currentPrecedence = BinaryPrecedence[expr.operator];
+          if (currentPrecedence < precedence) {
+            flags |= F_ALLOW_IN;
+          }
+          fragment = this.generateExpression(expr.left, currentPrecedence, flags);
+          leftSource = fragment.toString();
+          if (leftSource.charCodeAt(leftSource.length - 1) === 47 && esutils.code.isIdentifierPartES5(expr.operator.charCodeAt(0))) {
+            result = [
+              fragment,
+              noEmptySpace(),
+              expr.operator
+            ];
+          } else {
+            result = join(fragment, expr.operator);
+          }
+          fragment = this.generateExpression(expr.right, currentPrecedence + 1, flags);
+          if (expr.operator === '/' && fragment.toString().charAt(0) === '/' || expr.operator.slice(-1) === '<' && fragment.toString().slice(0, 3) === '!--') {
+            result.push(noEmptySpace());
+            result.push(fragment);
+          } else {
+            result = join(result, fragment);
+          }
+          if (expr.operator === 'in' && !(flags & F_ALLOW_IN)) {
+            return [
+              '(',
+              result,
+              ')'
+            ];
+          }
+          return parenthesize(result, currentPrecedence, precedence);
+        },
+        CallExpression: function (expr, precedence, flags) {
+          var result, i, iz;
+          result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
+          result.push('(');
+          for (i = 0, iz = expr['arguments'].length; i < iz; ++i) {
+            result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
+            if (i + 1 < iz) {
+              result.push(',' + space);
+            }
+          }
+          result.push(')');
+          if (!(flags & F_ALLOW_CALL)) {
+            return [
+              '(',
+              result,
+              ')'
+            ];
+          }
+          return parenthesize(result, Precedence.Call, precedence);
+        },
+        NewExpression: function (expr, precedence, flags) {
+          var result, length, i, iz, itemFlags;
+          length = expr['arguments'].length;
+          itemFlags = flags & F_ALLOW_UNPARATH_NEW && !parentheses && length === 0 ? E_TFT : E_TFF;
+          result = join('new', this.generateExpression(expr.callee, Precedence.New, itemFlags));
+          if (!(flags & F_ALLOW_UNPARATH_NEW) || parentheses || length > 0) {
+            result.push('(');
+            for (i = 0, iz = length; i < iz; ++i) {
+              result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
+              if (i + 1 < iz) {
+                result.push(',' + space);
+              }
+            }
+            result.push(')');
+          }
+          return parenthesize(result, Precedence.New, precedence);
+        },
+        MemberExpression: function (expr, precedence, flags) {
+          var result, fragment;
+          result = [this.generateExpression(expr.object, Precedence.Call, flags & F_ALLOW_CALL ? E_TTF : E_TFF)];
+          if (expr.computed) {
+            result.push('[');
+            result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
+            result.push(']');
+          } else {
+            if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
+              fragment = toSourceNodeWhenNeeded(result).toString();
+              if (fragment.indexOf('.') < 0 && !/[eExX]/.test(fragment) && esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) && !(fragment.length >= 2 && fragment.charCodeAt(0) === 48)) {
+                result.push('.');
+              }
+            }
+            result.push('.');
+            result.push(generateIdentifier(expr.property));
+          }
+          return parenthesize(result, Precedence.Member, precedence);
+        },
+        MetaProperty: function (expr, precedence, flags) {
+          var result;
+          result = [];
+          result.push(expr.meta);
+          result.push('.');
+          result.push(expr.property);
+          return parenthesize(result, Precedence.Member, precedence);
+        },
+        UnaryExpression: function (expr, precedence, flags) {
+          var result, fragment, rightCharCode, leftSource, leftCharCode;
+          fragment = this.generateExpression(expr.argument, Precedence.Unary, E_TTT);
+          if (space === '') {
+            result = join(expr.operator, fragment);
+          } else {
+            result = [expr.operator];
+            if (expr.operator.length > 2) {
+              result = join(result, fragment);
+            } else {
+              leftSource = toSourceNodeWhenNeeded(result).toString();
+              leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
+              rightCharCode = fragment.toString().charCodeAt(0);
+              if ((leftCharCode === 43 || leftCharCode === 45) && leftCharCode === rightCharCode || esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode)) {
+                result.push(noEmptySpace());
+                result.push(fragment);
+              } else {
+                result.push(fragment);
+              }
+            }
+          }
+          return parenthesize(result, Precedence.Unary, precedence);
+        },
+        YieldExpression: function (expr, precedence, flags) {
+          var result;
+          if (expr.delegate) {
+            result = 'yield*';
+          } else {
+            result = 'yield';
+          }
+          if (expr.argument) {
+            result = join(result, this.generateExpression(expr.argument, Precedence.Yield, E_TTT));
+          }
+          return parenthesize(result, Precedence.Yield, precedence);
+        },
+        AwaitExpression: function (expr, precedence, flags) {
+          var result = join(expr.all ? 'await*' : 'await', this.generateExpression(expr.argument, Precedence.Await, E_TTT));
+          return parenthesize(result, Precedence.Await, precedence);
+        },
+        UpdateExpression: function (expr, precedence, flags) {
+          if (expr.prefix) {
+            return parenthesize([
+              expr.operator,
+              this.generateExpression(expr.argument, Precedence.Unary, E_TTT)
+            ], Precedence.Unary, precedence);
+          }
+          return parenthesize([
+            this.generateExpression(expr.argument, Precedence.Postfix, E_TTT),
+            expr.operator
+          ], Precedence.Postfix, precedence);
+        },
+        FunctionExpression: function (expr, precedence, flags) {
+          var result = [
+              generateAsyncPrefix(expr, true),
+              'function'
+            ];
+          if (expr.id) {
+            result.push(generateStarSuffix(expr) || noEmptySpace());
+            result.push(generateIdentifier(expr.id));
+          } else {
+            result.push(generateStarSuffix(expr) || space);
+          }
+          result.push(this.generateFunctionBody(expr));
+          return result;
+        },
+        ArrayPattern: function (expr, precedence, flags) {
+          return this.ArrayExpression(expr, precedence, flags, true);
+        },
+        ArrayExpression: function (expr, precedence, flags, isPattern) {
+          var result, multiline, that = this;
+          if (!expr.elements.length) {
+            return '[]';
+          }
+          multiline = isPattern ? false : expr.elements.length > 1;
+          result = [
+            '[',
+            multiline ? newline : ''
+          ];
+          withIndent(function (indent) {
+            var i, iz;
+            for (i = 0, iz = expr.elements.length; i < iz; ++i) {
+              if (!expr.elements[i]) {
+                if (multiline) {
+                  result.push(indent);
+                }
+                if (i + 1 === iz) {
+                  result.push(',');
+                }
+              } else {
+                result.push(multiline ? indent : '');
+                result.push(that.generateExpression(expr.elements[i], Precedence.Assignment, E_TTT));
+              }
+              if (i + 1 < iz) {
+                result.push(',' + (multiline ? newline : space));
+              }
+            }
+          });
+          if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+            result.push(newline);
+          }
+          result.push(multiline ? base : '');
+          result.push(']');
+          return result;
+        },
+        RestElement: function (expr, precedence, flags) {
+          return '...' + this.generatePattern(expr.argument);
+        },
+        ClassExpression: function (expr, precedence, flags) {
+          var result, fragment;
+          result = ['class'];
+          if (expr.id) {
+            result = join(result, this.generateExpression(expr.id, Precedence.Sequence, E_TTT));
+          }
+          if (expr.superClass) {
+            fragment = join('extends', this.generateExpression(expr.superClass, Precedence.Assignment, E_TTT));
+            result = join(result, fragment);
+          }
+          result.push(space);
+          result.push(this.generateStatement(expr.body, S_TFFT));
+          return result;
+        },
+        MethodDefinition: function (expr, precedence, flags) {
+          var result, fragment;
+          if (expr['static']) {
+            result = ['static' + space];
+          } else {
+            result = [];
+          }
+          if (expr.kind === 'get' || expr.kind === 'set') {
+            fragment = [
+              join(expr.kind, this.generatePropertyKey(expr.key, expr.computed, expr.value)),
+              this.generateFunctionBody(expr.value)
+            ];
+          } else {
+            fragment = [
+              generateMethodPrefix(expr),
+              this.generatePropertyKey(expr.key, expr.computed, expr.value),
+              this.generateFunctionBody(expr.value)
+            ];
+          }
+          return join(result, fragment);
+        },
+        Property: function (expr, precedence, flags) {
+          if (expr.kind === 'get' || expr.kind === 'set') {
+            return [
+              expr.kind,
+              noEmptySpace(),
+              this.generatePropertyKey(expr.key, expr.computed, expr.value),
+              this.generateFunctionBody(expr.value)
+            ];
+          }
+          if (expr.shorthand) {
+            return this.generatePropertyKey(expr.key, expr.computed, expr.value);
+          }
+          if (expr.method) {
+            return [
+              generateMethodPrefix(expr),
+              this.generatePropertyKey(expr.key, expr.computed, expr.value),
+              this.generateFunctionBody(expr.value)
+            ];
+          }
+          return [
+            this.generatePropertyKey(expr.key, expr.computed, expr.value),
+            ':' + space,
+            this.generateExpression(expr.value, Precedence.Assignment, E_TTT)
+          ];
+        },
+        ObjectExpression: function (expr, precedence, flags) {
+          var multiline, result, fragment, that = this;
+          if (!expr.properties.length) {
+            return '{}';
+          }
+          multiline = expr.properties.length > 1;
+          withIndent(function () {
+            fragment = that.generateExpression(expr.properties[0], Precedence.Sequence, E_TTT);
+          });
+          if (!multiline) {
+            if (!hasLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
+              return [
+                '{',
+                space,
+                fragment,
+                space,
+                '}'
+              ];
+            }
+          }
+          withIndent(function (indent) {
+            var i, iz;
+            result = [
+              '{',
+              newline,
+              indent,
+              fragment
+            ];
+            if (multiline) {
+              result.push(',' + newline);
+              for (i = 1, iz = expr.properties.length; i < iz; ++i) {
+                result.push(indent);
+                result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
+                if (i + 1 < iz) {
+                  result.push(',' + newline);
+                }
+              }
+            }
+          });
+          if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+            result.push(newline);
+          }
+          result.push(base);
+          result.push('}');
+          return result;
+        },
+        AssignmentPattern: function (expr, precedence, flags) {
+          return this.generateAssignment(expr.left, expr.right, '=', precedence, flags);
+        },
+        ObjectPattern: function (expr, precedence, flags) {
+          var result, i, iz, multiline, property, that = this;
+          if (!expr.properties.length) {
+            return '{}';
+          }
+          multiline = false;
+          if (expr.properties.length === 1) {
+            property = expr.properties[0];
+            if (property.value.type !== Syntax.Identifier) {
+              multiline = true;
+            }
+          } else {
+            for (i = 0, iz = expr.properties.length; i < iz; ++i) {
+              property = expr.properties[i];
+              if (!property.shorthand) {
+                multiline = true;
+                break;
+              }
+            }
+          }
+          result = [
+            '{',
+            multiline ? newline : ''
+          ];
+          withIndent(function (indent) {
+            var i, iz;
+            for (i = 0, iz = expr.properties.length; i < iz; ++i) {
+              result.push(multiline ? indent : '');
+              result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
+              if (i + 1 < iz) {
+                result.push(',' + (multiline ? newline : space));
+              }
+            }
+          });
+          if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
+            result.push(newline);
+          }
+          result.push(multiline ? base : '');
+          result.push('}');
+          return result;
+        },
+        ThisExpression: function (expr, precedence, flags) {
+          return 'this';
+        },
+        Super: function (expr, precedence, flags) {
+          return 'super';
+        },
+        Identifier: function (expr, precedence, flags) {
+          return generateIdentifier(expr);
+        },
+        ImportDefaultSpecifier: function (expr, precedence, flags) {
+          return generateIdentifier(expr.id || expr.local);
+        },
+        ImportNamespaceSpecifier: function (expr, precedence, flags) {
+          var result = ['*'];
+          var id = expr.id || expr.local;
+          if (id) {
+            result.push(space + 'as' + noEmptySpace() + generateIdentifier(id));
+          }
+          return result;
+        },
+        ImportSpecifier: function (expr, precedence, flags) {
+          var imported = expr.imported;
+          var result = [imported.name];
+          var local = expr.local;
+          if (local && local.name !== imported.name) {
+            result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(local));
+          }
+          return result;
+        },
+        ExportSpecifier: function (expr, precedence, flags) {
+          var local = expr.local;
+          var result = [local.name];
+          var exported = expr.exported;
+          if (exported && exported.name !== local.name) {
+            result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(exported));
+          }
+          return result;
+        },
+        Literal: function (expr, precedence, flags) {
+          var raw;
+          if (expr.hasOwnProperty('raw') && parse && extra.raw) {
+            try {
+              raw = parse(expr.raw).body[0].expression;
+              if (raw.type === Syntax.Literal) {
+                if (raw.value === expr.value) {
+                  return expr.raw;
+                }
+              }
+            } catch (e) {
+            }
+          }
+          if (expr.value === null) {
+            return 'null';
+          }
+          if (typeof expr.value === 'string') {
+            return escapeString(expr.value);
+          }
+          if (typeof expr.value === 'number') {
+            return generateNumber(expr.value);
+          }
+          if (typeof expr.value === 'boolean') {
+            return expr.value ? 'true' : 'false';
+          }
+          if (expr.regex) {
+            return '/' + expr.regex.pattern + '/' + expr.regex.flags;
+          }
+          return generateRegExp(expr.value);
+        },
+        GeneratorExpression: function (expr, precedence, flags) {
+          return this.ComprehensionExpression(expr, precedence, flags);
+        },
+        ComprehensionExpression: function (expr, precedence, flags) {
+          var result, i, iz, fragment, that = this;
+          result = expr.type === Syntax.GeneratorExpression ? ['('] : ['['];
+          if (extra.moz.comprehensionExpressionStartsWithAssignment) {
+            fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
+            result.push(fragment);
+          }
+          if (expr.blocks) {
+            withIndent(function () {
+              for (i = 0, iz = expr.blocks.length; i < iz; ++i) {
+                fragment = that.generateExpression(expr.blocks[i], Precedence.Sequence, E_TTT);
+                if (i > 0 || extra.moz.comprehensionExpressionStartsWithAssignment) {
+                  result = join(result, fragment);
+                } else {
+                  result.push(fragment);
+                }
+              }
+            });
+          }
+          if (expr.filter) {
+            result = join(result, 'if' + space);
+            fragment = this.generateExpression(expr.filter, Precedence.Sequence, E_TTT);
+            result = join(result, [
+              '(',
+              fragment,
+              ')'
+            ]);
+          }
+          if (!extra.moz.comprehensionExpressionStartsWithAssignment) {
+            fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
+            result = join(result, fragment);
+          }
+          result.push(expr.type === Syntax.GeneratorExpression ? ')' : ']');
+          return result;
+        },
+        ComprehensionBlock: function (expr, precedence, flags) {
+          var fragment;
+          if (expr.left.type === Syntax.VariableDeclaration) {
+            fragment = [
+              expr.left.kind,
+              noEmptySpace(),
+              this.generateStatement(expr.left.declarations[0], S_FFFF)
+            ];
+          } else {
+            fragment = this.generateExpression(expr.left, Precedence.Call, E_TTT);
+          }
+          fragment = join(fragment, expr.of ? 'of' : 'in');
+          fragment = join(fragment, this.generateExpression(expr.right, Precedence.Sequence, E_TTT));
+          return [
+            'for' + space + '(',
+            fragment,
+            ')'
+          ];
+        },
+        SpreadElement: function (expr, precedence, flags) {
+          return [
+            '...',
+            this.generateExpression(expr.argument, Precedence.Assignment, E_TTT)
+          ];
+        },
+        TaggedTemplateExpression: function (expr, precedence, flags) {
+          var itemFlags = E_TTF;
+          if (!(flags & F_ALLOW_CALL)) {
+            itemFlags = E_TFF;
+          }
+          var result = [
+              this.generateExpression(expr.tag, Precedence.Call, itemFlags),
+              this.generateExpression(expr.quasi, Precedence.Primary, E_FFT)
+            ];
+          return parenthesize(result, Precedence.TaggedTemplate, precedence);
+        },
+        TemplateElement: function (expr, precedence, flags) {
+          return expr.value.raw;
+        },
+        TemplateLiteral: function (expr, precedence, flags) {
+          var result, i, iz;
+          result = ['`'];
+          for (i = 0, iz = expr.quasis.length; i < iz; ++i) {
+            result.push(this.generateExpression(expr.quasis[i], Precedence.Primary, E_TTT));
+            if (i + 1 < iz) {
+              result.push('${' + space);
+              result.push(this.generateExpression(expr.expressions[i], Precedence.Sequence, E_TTT));
+              result.push(space + '}');
+            }
+          }
+          result.push('`');
+          return result;
+        },
+        ModuleSpecifier: function (expr, precedence, flags) {
+          return this.Literal(expr, precedence, flags);
+        }
+      };
+      merge(CodeGenerator.prototype, CodeGenerator.Expression);
+      CodeGenerator.prototype.generateExpression = function (expr, precedence, flags) {
+        var result, type;
+        type = expr.type || Syntax.Property;
+        if (extra.verbatim && expr.hasOwnProperty(extra.verbatim)) {
+          return generateVerbatim(expr, precedence);
+        }
+        result = this[type](expr, precedence, flags);
+        if (extra.comment) {
+          result = addComments(expr, result);
+        }
+        return toSourceNodeWhenNeeded(result, expr);
+      };
+      CodeGenerator.prototype.generateStatement = function (stmt, flags) {
+        var result, fragment;
+        result = this[stmt.type](stmt, flags);
+        if (extra.comment) {
+          result = addComments(stmt, result);
+        }
+        fragment = toSourceNodeWhenNeeded(result).toString();
+        if (stmt.type === Syntax.Program && !safeConcatenation && newline === '' && fragment.charAt(fragment.length - 1) === '\n') {
+          result = sourceMap ? toSourceNodeWhenNeeded(result).replaceRight(/\s+$/, '') : fragment.replace(/\s+$/, '');
+        }
+        return toSourceNodeWhenNeeded(result, stmt);
+      };
+      function generateInternal(node) {
+        var codegen;
+        codegen = new CodeGenerator;
+        if (isStatement(node)) {
+          return codegen.generateStatement(node, S_TFFF);
+        }
+        if (isExpression(node)) {
+          return codegen.generateExpression(node, Precedence.Sequence, E_TTT);
+        }
+        throw new Error('Unknown node type: ' + node.type);
+      }
+      function generate(node, options) {
+        var defaultOptions = getDefaultOptions(), result, pair;
+        if (options != null) {
+          if (typeof options.indent === 'string') {
+            defaultOptions.format.indent.style = options.indent;
+          }
+          if (typeof options.base === 'number') {
+            defaultOptions.format.indent.base = options.base;
+          }
+          options = updateDeeply(defaultOptions, options);
+          indent = options.format.indent.style;
+          if (typeof options.base === 'string') {
+            base = options.base;
+          } else {
+            base = stringRepeat(indent, options.format.indent.base);
+          }
+        } else {
+          options = defaultOptions;
+          indent = options.format.indent.style;
+          base = stringRepeat(indent, options.format.indent.base);
+        }
+        json = options.format.json;
+        renumber = options.format.renumber;
+        hexadecimal = json ? false : options.format.hexadecimal;
+        quotes = json ? 'double' : options.format.quotes;
+        escapeless = options.format.escapeless;
+        newline = options.format.newline;
+        space = options.format.space;
+        if (options.format.compact) {
+          newline = space = indent = base = '';
+        }
+        parentheses = options.format.parentheses;
+        semicolons = options.format.semicolons;
+        safeConcatenation = options.format.safeConcatenation;
+        directive = options.directive;
+        parse = json ? null : options.parse;
+        sourceMap = options.sourceMap;
+        sourceCode = options.sourceCode;
+        preserveBlankLines = options.format.preserveBlankLines && sourceCode !== null;
+        extra = options;
+        if (sourceMap) {
+          if (!exports.browser) {
+            SourceNode = require('/node_modules/source-map/lib/source-map.js', module).SourceNode;
+          } else {
+            SourceNode = global.sourceMap.SourceNode;
+          }
+        }
+        result = generateInternal(node);
+        if (!sourceMap) {
+          pair = {
+            code: result.toString(),
+            map: null
+          };
+          return options.sourceMapWithCode ? pair : pair.code;
+        }
+        pair = result.toStringWithSourceMap({
+          file: options.file,
+          sourceRoot: options.sourceMapRoot
+        });
+        if (options.sourceContent) {
+          pair.map.setSourceContent(options.sourceMap, options.sourceContent);
+        }
+        if (options.sourceMapWithCode) {
+          return pair;
+        }
+        return pair.map.toString();
+      }
+      FORMAT_MINIFY = {
+        indent: {
+          style: '',
+          base: 0
+        },
+        renumber: true,
+        hexadecimal: true,
+        quotes: 'auto',
+        escapeless: true,
+        compact: true,
+        parentheses: false,
+        semicolons: false
+      };
+      FORMAT_DEFAULTS = getDefaultOptions().format;
+      exports.version = require('/package.json', module).version;
+      exports.generate = generate;
+      exports.attachComments = estraverse.attachComments;
+      exports.Precedence = updateDeeply({}, Precedence);
+      exports.browser = false;
+      exports.FORMAT_MINIFY = FORMAT_MINIFY;
+      exports.FORMAT_DEFAULTS = FORMAT_DEFAULTS;
+    }());
+  });
+  require.define('/package.json', function (module, exports, __dirname, __filename) {
+    module.exports = {
+      'name': 'escodegen',
+      'description': 'ECMAScript code generator',
+      'homepage': 'http://github.com/estools/escodegen',
+      'main': 'escodegen.js',
+      'bin': {
+        'esgenerate': './bin/esgenerate.js',
+        'escodegen': './bin/escodegen.js'
+      },
+      'files': [
+        'LICENSE.BSD',
+        'LICENSE.source-map',
+        'README.md',
+        'bin',
+        'escodegen.js',
+        'package.json'
+      ],
+      'version': '1.8.1',
+      'engines': { 'node': '>=0.12.0' },
+      'maintainers': [{
+          'name': 'Yusuke Suzuki',
+          'email': 'utatane.tea@gmail.com',
+          'web': 'http://github.com/Constellation'
+        }],
+      'repository': {
+        'type': 'git',
+        'url': 'http://github.com/estools/escodegen.git'
+      },
+      'dependencies': {
+        'estraverse': '^1.9.1',
+        'esutils': '^2.0.2',
+        'esprima': '^2.7.1',
+        'optionator': '^0.8.1'
+      },
+      'optionalDependencies': { 'source-map': '~0.2.0' },
+      'devDependencies': {
+        'acorn': '^2.7.0',
+        'bluebird': '^2.3.11',
+        'bower-registry-client': '^0.2.1',
+        'chai': '^1.10.0',
+        'commonjs-everywhere': '^0.9.7',
+        'gulp': '^3.8.10',
+        'gulp-eslint': '^0.2.0',
+        'gulp-mocha': '^2.0.0',
+        'semver': '^5.1.0'
+      },
+      'license': 'BSD-2-Clause',
+      'scripts': {
+        'test': 'gulp travis',
+        'unit-test': 'gulp test',
+        'lint': 'gulp lint',
+        'release': 'node tools/release.js',
+        'build-min': './node_modules/.bin/cjsify -ma path: tools/entry-point.js > escodegen.browser.min.js',
+        'build': './node_modules/.bin/cjsify -a path: tools/entry-point.js > escodegen.browser.js'
+      }
+    };
+  });
+  require.define('/node_modules/source-map/lib/source-map.js', function (module, exports, __dirname, __filename) {
+    exports.SourceMapGenerator = require('/node_modules/source-map/lib/source-map/source-map-generator.js', module).SourceMapGenerator;
+    exports.SourceMapConsumer = require('/node_modules/source-map/lib/source-map/source-map-consumer.js', module).SourceMapConsumer;
+    exports.SourceNode = require('/node_modules/source-map/lib/source-map/source-node.js', module).SourceNode;
+  });
+  require.define('/node_modules/source-map/lib/source-map/source-node.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var SourceMapGenerator = require('/node_modules/source-map/lib/source-map/source-map-generator.js', module).SourceMapGenerator;
+      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
+      var REGEX_NEWLINE = /(\r?\n)/;
+      var NEWLINE_CODE = 10;
+      var isSourceNode = '$$$isSourceNode$$$';
+      function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
+        this.children = [];
+        this.sourceContents = {};
+        this.line = aLine == null ? null : aLine;
+        this.column = aColumn == null ? null : aColumn;
+        this.source = aSource == null ? null : aSource;
+        this.name = aName == null ? null : aName;
+        this[isSourceNode] = true;
+        if (aChunks != null)
+          this.add(aChunks);
+      }
+      SourceNode.fromStringWithSourceMap = function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
+        var node = new SourceNode;
+        var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
+        var shiftNextLine = function () {
+          var lineContents = remainingLines.shift();
+          var newLine = remainingLines.shift() || '';
+          return lineContents + newLine;
+        };
+        var lastGeneratedLine = 1, lastGeneratedColumn = 0;
+        var lastMapping = null;
+        aSourceMapConsumer.eachMapping(function (mapping) {
+          if (lastMapping !== null) {
+            if (lastGeneratedLine < mapping.generatedLine) {
+              var code = '';
+              addMappingWithCode(lastMapping, shiftNextLine());
+              lastGeneratedLine++;
+              lastGeneratedColumn = 0;
+            } else {
+              var nextLine = remainingLines[0];
+              var code = nextLine.substr(0, mapping.generatedColumn - lastGeneratedColumn);
+              remainingLines[0] = nextLine.substr(mapping.generatedColumn - lastGeneratedColumn);
+              lastGeneratedColumn = mapping.generatedColumn;
+              addMappingWithCode(lastMapping, code);
+              lastMapping = mapping;
+              return;
+            }
+          }
+          while (lastGeneratedLine < mapping.generatedLine) {
+            node.add(shiftNextLine());
+            lastGeneratedLine++;
+          }
+          if (lastGeneratedColumn < mapping.generatedColumn) {
+            var nextLine = remainingLines[0];
+            node.add(nextLine.substr(0, mapping.generatedColumn));
+            remainingLines[0] = nextLine.substr(mapping.generatedColumn);
+            lastGeneratedColumn = mapping.generatedColumn;
+          }
+          lastMapping = mapping;
+        }, this);
+        if (remainingLines.length > 0) {
+          if (lastMapping) {
+            addMappingWithCode(lastMapping, shiftNextLine());
+          }
+          node.add(remainingLines.join(''));
+        }
+        aSourceMapConsumer.sources.forEach(function (sourceFile) {
+          var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+          if (content != null) {
+            if (aRelativePath != null) {
+              sourceFile = util.join(aRelativePath, sourceFile);
+            }
+            node.setSourceContent(sourceFile, content);
+          }
+        });
+        return node;
+        function addMappingWithCode(mapping, code) {
+          if (mapping === null || mapping.source === undefined) {
+            node.add(code);
+          } else {
+            var source = aRelativePath ? util.join(aRelativePath, mapping.source) : mapping.source;
+            node.add(new SourceNode(mapping.originalLine, mapping.originalColumn, source, code, mapping.name));
+          }
+        }
+      };
+      SourceNode.prototype.add = function SourceNode_add(aChunk) {
+        if (Array.isArray(aChunk)) {
+          aChunk.forEach(function (chunk) {
+            this.add(chunk);
+          }, this);
+        } else if (aChunk[isSourceNode] || typeof aChunk === 'string') {
+          if (aChunk) {
+            this.children.push(aChunk);
+          }
+        } else {
+          throw new TypeError('Expected a SourceNode, string, or an array of SourceNodes and strings. Got ' + aChunk);
+        }
+        return this;
+      };
+      SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
+        if (Array.isArray(aChunk)) {
+          for (var i = aChunk.length - 1; i >= 0; i--) {
+            this.prepend(aChunk[i]);
+          }
+        } else if (aChunk[isSourceNode] || typeof aChunk === 'string') {
+          this.children.unshift(aChunk);
+        } else {
+          throw new TypeError('Expected a SourceNode, string, or an array of SourceNodes and strings. Got ' + aChunk);
+        }
+        return this;
+      };
+      SourceNode.prototype.walk = function SourceNode_walk(aFn) {
+        var chunk;
+        for (var i = 0, len = this.children.length; i < len; i++) {
+          chunk = this.children[i];
+          if (chunk[isSourceNode]) {
+            chunk.walk(aFn);
+          } else {
+            if (chunk !== '') {
+              aFn(chunk, {
+                source: this.source,
+                line: this.line,
+                column: this.column,
+                name: this.name
+              });
+            }
+          }
+        }
+      };
+      SourceNode.prototype.join = function SourceNode_join(aSep) {
+        var newChildren;
+        var i;
+        var len = this.children.length;
+        if (len > 0) {
+          newChildren = [];
+          for (i = 0; i < len - 1; i++) {
+            newChildren.push(this.children[i]);
+            newChildren.push(aSep);
+          }
+          newChildren.push(this.children[i]);
+          this.children = newChildren;
+        }
+        return this;
+      };
+      SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
+        var lastChild = this.children[this.children.length - 1];
+        if (lastChild[isSourceNode]) {
+          lastChild.replaceRight(aPattern, aReplacement);
+        } else if (typeof lastChild === 'string') {
+          this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
+        } else {
+          this.children.push(''.replace(aPattern, aReplacement));
+        }
+        return this;
+      };
+      SourceNode.prototype.setSourceContent = function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
+        this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
+      };
+      SourceNode.prototype.walkSourceContents = function SourceNode_walkSourceContents(aFn) {
+        for (var i = 0, len = this.children.length; i < len; i++) {
+          if (this.children[i][isSourceNode]) {
+            this.children[i].walkSourceContents(aFn);
+          }
+        }
+        var sources = Object.keys(this.sourceContents);
+        for (var i = 0, len = sources.length; i < len; i++) {
+          aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
+        }
+      };
+      SourceNode.prototype.toString = function SourceNode_toString() {
+        var str = '';
+        this.walk(function (chunk) {
+          str += chunk;
+        });
+        return str;
+      };
+      SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
+        var generated = {
+            code: '',
+            line: 1,
+            column: 0
+          };
+        var map = new SourceMapGenerator(aArgs);
+        var sourceMappingActive = false;
+        var lastOriginalSource = null;
+        var lastOriginalLine = null;
+        var lastOriginalColumn = null;
+        var lastOriginalName = null;
+        this.walk(function (chunk, original) {
+          generated.code += chunk;
+          if (original.source !== null && original.line !== null && original.column !== null) {
+            if (lastOriginalSource !== original.source || lastOriginalLine !== original.line || lastOriginalColumn !== original.column || lastOriginalName !== original.name) {
+              map.addMapping({
+                source: original.source,
+                original: {
+                  line: original.line,
+                  column: original.column
+                },
+                generated: {
+                  line: generated.line,
+                  column: generated.column
+                },
+                name: original.name
+              });
+            }
+            lastOriginalSource = original.source;
+            lastOriginalLine = original.line;
+            lastOriginalColumn = original.column;
+            lastOriginalName = original.name;
+            sourceMappingActive = true;
+          } else if (sourceMappingActive) {
+            map.addMapping({
+              generated: {
+                line: generated.line,
+                column: generated.column
+              }
+            });
+            lastOriginalSource = null;
+            sourceMappingActive = false;
+          }
+          for (var idx = 0, length = chunk.length; idx < length; idx++) {
+            if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
+              generated.line++;
+              generated.column = 0;
+              if (idx + 1 === length) {
+                lastOriginalSource = null;
+                sourceMappingActive = false;
+              } else if (sourceMappingActive) {
+                map.addMapping({
+                  source: original.source,
+                  original: {
+                    line: original.line,
+                    column: original.column
+                  },
+                  generated: {
+                    line: generated.line,
+                    column: generated.column
+                  },
+                  name: original.name
+                });
+              }
+            } else {
+              generated.column++;
+            }
+          }
+        });
+        this.walkSourceContents(function (sourceFile, sourceContent) {
+          map.setSourceContent(sourceFile, sourceContent);
+        });
+        return {
+          code: generated.code,
+          map: map
+        };
+      };
+      exports.SourceNode = SourceNode;
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/util.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      function getArg(aArgs, aName, aDefaultValue) {
+        if (aName in aArgs) {
+          return aArgs[aName];
+        } else if (arguments.length === 3) {
+          return aDefaultValue;
+        } else {
+          throw new Error('"' + aName + '" is a required argument.');
+        }
+      }
+      exports.getArg = getArg;
+      var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
+      var dataUrlRegexp = /^data:.+\,.+$/;
+      function urlParse(aUrl) {
+        var match = aUrl.match(urlRegexp);
+        if (!match) {
+          return null;
+        }
+        return {
+          scheme: match[1],
+          auth: match[2],
+          host: match[3],
+          port: match[4],
+          path: match[5]
+        };
+      }
+      exports.urlParse = urlParse;
+      function urlGenerate(aParsedUrl) {
+        var url = '';
+        if (aParsedUrl.scheme) {
+          url += aParsedUrl.scheme + ':';
+        }
+        url += '//';
+        if (aParsedUrl.auth) {
+          url += aParsedUrl.auth + '@';
+        }
+        if (aParsedUrl.host) {
+          url += aParsedUrl.host;
+        }
+        if (aParsedUrl.port) {
+          url += ':' + aParsedUrl.port;
+        }
+        if (aParsedUrl.path) {
+          url += aParsedUrl.path;
+        }
+        return url;
+      }
+      exports.urlGenerate = urlGenerate;
+      function normalize(aPath) {
+        var path = aPath;
+        var url = urlParse(aPath);
+        if (url) {
+          if (!url.path) {
+            return aPath;
+          }
+          path = url.path;
+        }
+        var isAbsolute = path.charAt(0) === '/';
+        var parts = path.split(/\/+/);
+        for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
+          part = parts[i];
+          if (part === '.') {
+            parts.splice(i, 1);
+          } else if (part === '..') {
+            up++;
+          } else if (up > 0) {
+            if (part === '') {
+              parts.splice(i + 1, up);
+              up = 0;
+            } else {
+              parts.splice(i, 2);
+              up--;
+            }
+          }
+        }
+        path = parts.join('/');
+        if (path === '') {
+          path = isAbsolute ? '/' : '.';
+        }
+        if (url) {
+          url.path = path;
+          return urlGenerate(url);
+        }
+        return path;
+      }
+      exports.normalize = normalize;
+      function join(aRoot, aPath) {
+        if (aRoot === '') {
+          aRoot = '.';
+        }
+        if (aPath === '') {
+          aPath = '.';
+        }
+        var aPathUrl = urlParse(aPath);
+        var aRootUrl = urlParse(aRoot);
+        if (aRootUrl) {
+          aRoot = aRootUrl.path || '/';
+        }
+        if (aPathUrl && !aPathUrl.scheme) {
+          if (aRootUrl) {
+            aPathUrl.scheme = aRootUrl.scheme;
+          }
+          return urlGenerate(aPathUrl);
+        }
+        if (aPathUrl || aPath.match(dataUrlRegexp)) {
+          return aPath;
+        }
+        if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
+          aRootUrl.host = aPath;
+          return urlGenerate(aRootUrl);
+        }
+        var joined = aPath.charAt(0) === '/' ? aPath : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);
+        if (aRootUrl) {
+          aRootUrl.path = joined;
+          return urlGenerate(aRootUrl);
+        }
+        return joined;
+      }
+      exports.join = join;
+      function relative(aRoot, aPath) {
+        if (aRoot === '') {
+          aRoot = '.';
+        }
+        aRoot = aRoot.replace(/\/$/, '');
+        var url = urlParse(aRoot);
+        if (aPath.charAt(0) == '/' && url && url.path == '/') {
+          return aPath.slice(1);
+        }
+        return aPath.indexOf(aRoot + '/') === 0 ? aPath.substr(aRoot.length + 1) : aPath;
+      }
+      exports.relative = relative;
+      function toSetString(aStr) {
+        return '$' + aStr;
+      }
+      exports.toSetString = toSetString;
+      function fromSetString(aStr) {
+        return aStr.substr(1);
+      }
+      exports.fromSetString = fromSetString;
+      function strcmp(aStr1, aStr2) {
+        var s1 = aStr1 || '';
+        var s2 = aStr2 || '';
+        return (s1 > s2) - (s1 < s2);
+      }
+      function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
+        var cmp;
+        cmp = strcmp(mappingA.source, mappingB.source);
+        if (cmp) {
+          return cmp;
+        }
+        cmp = mappingA.originalLine - mappingB.originalLine;
+        if (cmp) {
+          return cmp;
+        }
+        cmp = mappingA.originalColumn - mappingB.originalColumn;
+        if (cmp || onlyCompareOriginal) {
+          return cmp;
+        }
+        cmp = strcmp(mappingA.name, mappingB.name);
+        if (cmp) {
+          return cmp;
+        }
+        cmp = mappingA.generatedLine - mappingB.generatedLine;
+        if (cmp) {
+          return cmp;
+        }
+        return mappingA.generatedColumn - mappingB.generatedColumn;
+      }
+      ;
+      exports.compareByOriginalPositions = compareByOriginalPositions;
+      function compareByGeneratedPositions(mappingA, mappingB, onlyCompareGenerated) {
+        var cmp;
+        cmp = mappingA.generatedLine - mappingB.generatedLine;
+        if (cmp) {
+          return cmp;
+        }
+        cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+        if (cmp || onlyCompareGenerated) {
+          return cmp;
+        }
+        cmp = strcmp(mappingA.source, mappingB.source);
+        if (cmp) {
+          return cmp;
+        }
+        cmp = mappingA.originalLine - mappingB.originalLine;
+        if (cmp) {
+          return cmp;
+        }
+        cmp = mappingA.originalColumn - mappingB.originalColumn;
+        if (cmp) {
+          return cmp;
+        }
+        return strcmp(mappingA.name, mappingB.name);
+      }
+      ;
+      exports.compareByGeneratedPositions = compareByGeneratedPositions;
+    });
+  });
+  require.define('/node_modules/amdefine/amdefine.js', function (module, exports, __dirname, __filename) {
+    'use strict';
+    function amdefine(module, requireFn) {
+      'use strict';
+      var defineCache = {}, loaderCache = {}, alreadyCalled = false, path = require('path', module), makeRequire, stringRequire;
+      function trimDots(ary) {
+        var i, part;
+        for (i = 0; ary[i]; i += 1) {
+          part = ary[i];
+          if (part === '.') {
+            ary.splice(i, 1);
+            i -= 1;
+          } else if (part === '..') {
+            if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
+              break;
+            } else if (i > 0) {
+              ary.splice(i - 1, 2);
+              i -= 2;
+            }
+          }
+        }
+      }
+      function normalize(name, baseName) {
+        var baseParts;
+        if (name && name.charAt(0) === '.') {
+          if (baseName) {
+            baseParts = baseName.split('/');
+            baseParts = baseParts.slice(0, baseParts.length - 1);
+            baseParts = baseParts.concat(name.split('/'));
+            trimDots(baseParts);
+            name = baseParts.join('/');
+          }
+        }
+        return name;
+      }
+      function makeNormalize(relName) {
+        return function (name) {
+          return normalize(name, relName);
+        };
+      }
+      function makeLoad(id) {
+        function load(value) {
+          loaderCache[id] = value;
+        }
+        load.fromText = function (id, text) {
+          throw new Error('amdefine does not implement load.fromText');
+        };
+        return load;
+      }
+      makeRequire = function (systemRequire, exports, module, relId) {
+        function amdRequire(deps, callback) {
+          if (typeof deps === 'string') {
+            return stringRequire(systemRequire, exports, module, deps, relId);
+          } else {
+            deps = deps.map(function (depName) {
+              return stringRequire(systemRequire, exports, module, depName, relId);
+            });
+            if (callback) {
+              process.nextTick(function () {
+                callback.apply(null, deps);
+              });
+            }
+          }
+        }
+        amdRequire.toUrl = function (filePath) {
+          if (filePath.indexOf('.') === 0) {
+            return normalize(filePath, path.dirname(module.filename));
+          } else {
+            return filePath;
+          }
+        };
+        return amdRequire;
+      };
+      requireFn = requireFn || function req() {
+        return module.require.apply(module, arguments);
+      };
+      function runFactory(id, deps, factory) {
+        var r, e, m, result;
+        if (id) {
+          e = loaderCache[id] = {};
+          m = {
+            id: id,
+            uri: __filename,
+            exports: e
+          };
+          r = makeRequire(requireFn, e, m, id);
+        } else {
+          if (alreadyCalled) {
+            throw new Error('amdefine with no module ID cannot be called more than once per file.');
+          }
+          alreadyCalled = true;
+          e = module.exports;
+          m = module;
+          r = makeRequire(requireFn, e, m, module.id);
+        }
+        if (deps) {
+          deps = deps.map(function (depName) {
+            return r(depName);
+          });
+        }
+        if (typeof factory === 'function') {
+          result = factory.apply(m.exports, deps);
+        } else {
+          result = factory;
+        }
+        if (result !== undefined) {
+          m.exports = result;
+          if (id) {
+            loaderCache[id] = m.exports;
+          }
+        }
+      }
+      stringRequire = function (systemRequire, exports, module, id, relId) {
+        var index = id.indexOf('!'), originalId = id, prefix, plugin;
+        if (index === -1) {
+          id = normalize(id, relId);
+          if (id === 'require') {
+            return makeRequire(systemRequire, exports, module, relId);
+          } else if (id === 'exports') {
+            return exports;
+          } else if (id === 'module') {
+            return module;
+          } else if (loaderCache.hasOwnProperty(id)) {
+            return loaderCache[id];
+          } else if (defineCache[id]) {
+            runFactory.apply(null, defineCache[id]);
+            return loaderCache[id];
+          } else {
+            if (systemRequire) {
+              return systemRequire(originalId);
+            } else {
+              throw new Error('No module with ID: ' + id);
+            }
+          }
+        } else {
+          prefix = id.substring(0, index);
+          id = id.substring(index + 1, id.length);
+          plugin = stringRequire(systemRequire, exports, module, prefix, relId);
+          if (plugin.normalize) {
+            id = plugin.normalize(id, makeNormalize(relId));
+          } else {
+            id = normalize(id, relId);
+          }
+          if (loaderCache[id]) {
+            return loaderCache[id];
+          } else {
+            plugin.load(id, makeRequire(systemRequire, exports, module, relId), makeLoad(id), {});
+            return loaderCache[id];
+          }
+        }
+      };
+      function define(id, deps, factory) {
+        if (Array.isArray(id)) {
+          factory = deps;
+          deps = id;
+          id = undefined;
+        } else if (typeof id !== 'string') {
+          factory = id;
+          id = deps = undefined;
+        }
+        if (deps && !Array.isArray(deps)) {
+          factory = deps;
+          deps = undefined;
+        }
+        if (!deps) {
+          deps = [
+            'require',
+            'exports',
+            'module'
+          ];
+        }
+        if (id) {
+          defineCache[id] = [
+            id,
+            deps,
+            factory
+          ];
+        } else {
+          runFactory(id, deps, factory);
+        }
+      }
+      define.require = function (id) {
+        if (loaderCache[id]) {
+          return loaderCache[id];
+        }
+        if (defineCache[id]) {
+          runFactory.apply(null, defineCache[id]);
+          return loaderCache[id];
+        }
+      };
+      define.amd = {};
+      return define;
+    }
+    module.exports = amdefine;
+  });
+  require.define('/node_modules/source-map/lib/source-map/source-map-generator.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var base64VLQ = require('/node_modules/source-map/lib/source-map/base64-vlq.js', module);
+      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
+      var ArraySet = require('/node_modules/source-map/lib/source-map/array-set.js', module).ArraySet;
+      var MappingList = require('/node_modules/source-map/lib/source-map/mapping-list.js', module).MappingList;
+      function SourceMapGenerator(aArgs) {
+        if (!aArgs) {
+          aArgs = {};
+        }
+        this._file = util.getArg(aArgs, 'file', null);
+        this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
+        this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
+        this._sources = new ArraySet;
+        this._names = new ArraySet;
+        this._mappings = new MappingList;
+        this._sourcesContents = null;
+      }
+      SourceMapGenerator.prototype._version = 3;
+      SourceMapGenerator.fromSourceMap = function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
+        var sourceRoot = aSourceMapConsumer.sourceRoot;
+        var generator = new SourceMapGenerator({
+            file: aSourceMapConsumer.file,
+            sourceRoot: sourceRoot
+          });
+        aSourceMapConsumer.eachMapping(function (mapping) {
+          var newMapping = {
+              generated: {
+                line: mapping.generatedLine,
+                column: mapping.generatedColumn
+              }
+            };
+          if (mapping.source != null) {
+            newMapping.source = mapping.source;
+            if (sourceRoot != null) {
+              newMapping.source = util.relative(sourceRoot, newMapping.source);
+            }
+            newMapping.original = {
+              line: mapping.originalLine,
+              column: mapping.originalColumn
+            };
+            if (mapping.name != null) {
+              newMapping.name = mapping.name;
+            }
+          }
+          generator.addMapping(newMapping);
+        });
+        aSourceMapConsumer.sources.forEach(function (sourceFile) {
+          var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+          if (content != null) {
+            generator.setSourceContent(sourceFile, content);
+          }
+        });
+        return generator;
+      };
+      SourceMapGenerator.prototype.addMapping = function SourceMapGenerator_addMapping(aArgs) {
+        var generated = util.getArg(aArgs, 'generated');
+        var original = util.getArg(aArgs, 'original', null);
+        var source = util.getArg(aArgs, 'source', null);
+        var name = util.getArg(aArgs, 'name', null);
+        if (!this._skipValidation) {
+          this._validateMapping(generated, original, source, name);
+        }
+        if (source != null && !this._sources.has(source)) {
+          this._sources.add(source);
+        }
+        if (name != null && !this._names.has(name)) {
+          this._names.add(name);
+        }
+        this._mappings.add({
+          generatedLine: generated.line,
+          generatedColumn: generated.column,
+          originalLine: original != null && original.line,
+          originalColumn: original != null && original.column,
+          source: source,
+          name: name
+        });
+      };
+      SourceMapGenerator.prototype.setSourceContent = function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
+        var source = aSourceFile;
+        if (this._sourceRoot != null) {
+          source = util.relative(this._sourceRoot, source);
+        }
+        if (aSourceContent != null) {
+          if (!this._sourcesContents) {
+            this._sourcesContents = {};
+          }
+          this._sourcesContents[util.toSetString(source)] = aSourceContent;
+        } else if (this._sourcesContents) {
+          delete this._sourcesContents[util.toSetString(source)];
+          if (Object.keys(this._sourcesContents).length === 0) {
+            this._sourcesContents = null;
+          }
+        }
+      };
+      SourceMapGenerator.prototype.applySourceMap = function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
+        var sourceFile = aSourceFile;
+        if (aSourceFile == null) {
+          if (aSourceMapConsumer.file == null) {
+            throw new Error('SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' + 'or the source map\'s "file" property. Both were omitted.');
+          }
+          sourceFile = aSourceMapConsumer.file;
+        }
+        var sourceRoot = this._sourceRoot;
+        if (sourceRoot != null) {
+          sourceFile = util.relative(sourceRoot, sourceFile);
+        }
+        var newSources = new ArraySet;
+        var newNames = new ArraySet;
+        this._mappings.unsortedForEach(function (mapping) {
+          if (mapping.source === sourceFile && mapping.originalLine != null) {
+            var original = aSourceMapConsumer.originalPositionFor({
+                line: mapping.originalLine,
+                column: mapping.originalColumn
+              });
+            if (original.source != null) {
+              mapping.source = original.source;
+              if (aSourceMapPath != null) {
+                mapping.source = util.join(aSourceMapPath, mapping.source);
+              }
+              if (sourceRoot != null) {
+                mapping.source = util.relative(sourceRoot, mapping.source);
+              }
+              mapping.originalLine = original.line;
+              mapping.originalColumn = original.column;
+              if (original.name != null) {
+                mapping.name = original.name;
+              }
+            }
+          }
+          var source = mapping.source;
+          if (source != null && !newSources.has(source)) {
+            newSources.add(source);
+          }
+          var name = mapping.name;
+          if (name != null && !newNames.has(name)) {
+            newNames.add(name);
+          }
+        }, this);
+        this._sources = newSources;
+        this._names = newNames;
+        aSourceMapConsumer.sources.forEach(function (sourceFile) {
+          var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+          if (content != null) {
+            if (aSourceMapPath != null) {
+              sourceFile = util.join(aSourceMapPath, sourceFile);
+            }
+            if (sourceRoot != null) {
+              sourceFile = util.relative(sourceRoot, sourceFile);
+            }
+            this.setSourceContent(sourceFile, content);
+          }
+        }, this);
+      };
+      SourceMapGenerator.prototype._validateMapping = function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource, aName) {
+        if (aGenerated && 'line' in aGenerated && 'column' in aGenerated && aGenerated.line > 0 && aGenerated.column >= 0 && !aOriginal && !aSource && !aName) {
+          return;
+        } else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated && aOriginal && 'line' in aOriginal && 'column' in aOriginal && aGenerated.line > 0 && aGenerated.column >= 0 && aOriginal.line > 0 && aOriginal.column >= 0 && aSource) {
+          return;
+        } else {
+          throw new Error('Invalid mapping: ' + JSON.stringify({
+            generated: aGenerated,
+            source: aSource,
+            original: aOriginal,
+            name: aName
+          }));
+        }
+      };
+      SourceMapGenerator.prototype._serializeMappings = function SourceMapGenerator_serializeMappings() {
+        var previousGeneratedColumn = 0;
+        var previousGeneratedLine = 1;
+        var previousOriginalColumn = 0;
+        var previousOriginalLine = 0;
+        var previousName = 0;
+        var previousSource = 0;
+        var result = '';
+        var mapping;
+        var mappings = this._mappings.toArray();
+        for (var i = 0, len = mappings.length; i < len; i++) {
+          mapping = mappings[i];
+          if (mapping.generatedLine !== previousGeneratedLine) {
+            previousGeneratedColumn = 0;
+            while (mapping.generatedLine !== previousGeneratedLine) {
+              result += ';';
+              previousGeneratedLine++;
+            }
+          } else {
+            if (i > 0) {
+              if (!util.compareByGeneratedPositions(mapping, mappings[i - 1])) {
+                continue;
+              }
+              result += ',';
+            }
+          }
+          result += base64VLQ.encode(mapping.generatedColumn - previousGeneratedColumn);
+          previousGeneratedColumn = mapping.generatedColumn;
+          if (mapping.source != null) {
+            result += base64VLQ.encode(this._sources.indexOf(mapping.source) - previousSource);
+            previousSource = this._sources.indexOf(mapping.source);
+            result += base64VLQ.encode(mapping.originalLine - 1 - previousOriginalLine);
+            previousOriginalLine = mapping.originalLine - 1;
+            result += base64VLQ.encode(mapping.originalColumn - previousOriginalColumn);
+            previousOriginalColumn = mapping.originalColumn;
+            if (mapping.name != null) {
+              result += base64VLQ.encode(this._names.indexOf(mapping.name) - previousName);
+              previousName = this._names.indexOf(mapping.name);
+            }
+          }
+        }
+        return result;
+      };
+      SourceMapGenerator.prototype._generateSourcesContent = function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
+        return aSources.map(function (source) {
+          if (!this._sourcesContents) {
+            return null;
+          }
+          if (aSourceRoot != null) {
+            source = util.relative(aSourceRoot, source);
+          }
+          var key = util.toSetString(source);
+          return Object.prototype.hasOwnProperty.call(this._sourcesContents, key) ? this._sourcesContents[key] : null;
+        }, this);
+      };
+      SourceMapGenerator.prototype.toJSON = function SourceMapGenerator_toJSON() {
+        var map = {
+            version: this._version,
+            sources: this._sources.toArray(),
+            names: this._names.toArray(),
+            mappings: this._serializeMappings()
+          };
+        if (this._file != null) {
+          map.file = this._file;
+        }
+        if (this._sourceRoot != null) {
+          map.sourceRoot = this._sourceRoot;
+        }
+        if (this._sourcesContents) {
+          map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
+        }
+        return map;
+      };
+      SourceMapGenerator.prototype.toString = function SourceMapGenerator_toString() {
+        return JSON.stringify(this);
+      };
+      exports.SourceMapGenerator = SourceMapGenerator;
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/mapping-list.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
+      function generatedPositionAfter(mappingA, mappingB) {
+        var lineA = mappingA.generatedLine;
+        var lineB = mappingB.generatedLine;
+        var columnA = mappingA.generatedColumn;
+        var columnB = mappingB.generatedColumn;
+        return lineB > lineA || lineB == lineA && columnB >= columnA || util.compareByGeneratedPositions(mappingA, mappingB) <= 0;
+      }
+      function MappingList() {
+        this._array = [];
+        this._sorted = true;
+        this._last = {
+          generatedLine: -1,
+          generatedColumn: 0
+        };
+      }
+      MappingList.prototype.unsortedForEach = function MappingList_forEach(aCallback, aThisArg) {
+        this._array.forEach(aCallback, aThisArg);
+      };
+      MappingList.prototype.add = function MappingList_add(aMapping) {
+        var mapping;
+        if (generatedPositionAfter(this._last, aMapping)) {
+          this._last = aMapping;
+          this._array.push(aMapping);
+        } else {
+          this._sorted = false;
+          this._array.push(aMapping);
+        }
+      };
+      MappingList.prototype.toArray = function MappingList_toArray() {
+        if (!this._sorted) {
+          this._array.sort(util.compareByGeneratedPositions);
+          this._sorted = true;
+        }
+        return this._array;
+      };
+      exports.MappingList = MappingList;
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/array-set.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
+      function ArraySet() {
+        this._array = [];
+        this._set = {};
+      }
+      ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
+        var set = new ArraySet;
+        for (var i = 0, len = aArray.length; i < len; i++) {
+          set.add(aArray[i], aAllowDuplicates);
+        }
+        return set;
+      };
+      ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
+        var isDuplicate = this.has(aStr);
+        var idx = this._array.length;
+        if (!isDuplicate || aAllowDuplicates) {
+          this._array.push(aStr);
+        }
+        if (!isDuplicate) {
+          this._set[util.toSetString(aStr)] = idx;
+        }
+      };
+      ArraySet.prototype.has = function ArraySet_has(aStr) {
+        return Object.prototype.hasOwnProperty.call(this._set, util.toSetString(aStr));
+      };
+      ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
+        if (this.has(aStr)) {
+          return this._set[util.toSetString(aStr)];
+        }
+        throw new Error('"' + aStr + '" is not in the set.');
+      };
+      ArraySet.prototype.at = function ArraySet_at(aIdx) {
+        if (aIdx >= 0 && aIdx < this._array.length) {
+          return this._array[aIdx];
+        }
+        throw new Error('No element indexed by ' + aIdx);
+      };
+      ArraySet.prototype.toArray = function ArraySet_toArray() {
+        return this._array.slice();
+      };
+      exports.ArraySet = ArraySet;
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/base64-vlq.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var base64 = require('/node_modules/source-map/lib/source-map/base64.js', module);
+      var VLQ_BASE_SHIFT = 5;
+      var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
+      var VLQ_BASE_MASK = VLQ_BASE - 1;
+      var VLQ_CONTINUATION_BIT = VLQ_BASE;
+      function toVLQSigned(aValue) {
+        return aValue < 0 ? (-aValue << 1) + 1 : (aValue << 1) + 0;
+      }
+      function fromVLQSigned(aValue) {
+        var isNegative = (aValue & 1) === 1;
+        var shifted = aValue >> 1;
+        return isNegative ? -shifted : shifted;
+      }
+      exports.encode = function base64VLQ_encode(aValue) {
+        var encoded = '';
+        var digit;
+        var vlq = toVLQSigned(aValue);
+        do {
+          digit = vlq & VLQ_BASE_MASK;
+          vlq >>>= VLQ_BASE_SHIFT;
+          if (vlq > 0) {
+            digit |= VLQ_CONTINUATION_BIT;
+          }
+          encoded += base64.encode(digit);
+        } while (vlq > 0);
+        return encoded;
+      };
+      exports.decode = function base64VLQ_decode(aStr, aOutParam) {
+        var i = 0;
+        var strLen = aStr.length;
+        var result = 0;
+        var shift = 0;
+        var continuation, digit;
+        do {
+          if (i >= strLen) {
+            throw new Error('Expected more digits in base 64 VLQ value.');
+          }
+          digit = base64.decode(aStr.charAt(i++));
+          continuation = !!(digit & VLQ_CONTINUATION_BIT);
+          digit &= VLQ_BASE_MASK;
+          result = result + (digit << shift);
+          shift += VLQ_BASE_SHIFT;
+        } while (continuation);
+        aOutParam.value = fromVLQSigned(result);
+        aOutParam.rest = aStr.slice(i);
+      };
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/base64.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var charToIntMap = {};
+      var intToCharMap = {};
+      'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('').forEach(function (ch, index) {
+        charToIntMap[ch] = index;
+        intToCharMap[index] = ch;
+      });
+      exports.encode = function base64_encode(aNumber) {
+        if (aNumber in intToCharMap) {
+          return intToCharMap[aNumber];
+        }
+        throw new TypeError('Must be between 0 and 63: ' + aNumber);
+      };
+      exports.decode = function base64_decode(aChar) {
+        if (aChar in charToIntMap) {
+          return charToIntMap[aChar];
+        }
+        throw new TypeError('Not a valid base 64 digit: ' + aChar);
+      };
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/source-map-consumer.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
+      function SourceMapConsumer(aSourceMap) {
+        var sourceMap = aSourceMap;
+        if (typeof aSourceMap === 'string') {
+          sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+        }
+        if (sourceMap.sections != null) {
+          var indexedSourceMapConsumer = require('/node_modules/source-map/lib/source-map/indexed-source-map-consumer.js', module);
+          return new indexedSourceMapConsumer.IndexedSourceMapConsumer(sourceMap);
+        } else {
+          var basicSourceMapConsumer = require('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', module);
+          return new basicSourceMapConsumer.BasicSourceMapConsumer(sourceMap);
+        }
+      }
+      SourceMapConsumer.fromSourceMap = function (aSourceMap) {
+        var basicSourceMapConsumer = require('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', module);
+        return basicSourceMapConsumer.BasicSourceMapConsumer.fromSourceMap(aSourceMap);
+      };
+      SourceMapConsumer.prototype._version = 3;
+      SourceMapConsumer.prototype.__generatedMappings = null;
+      Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
+        get: function () {
+          if (!this.__generatedMappings) {
+            this.__generatedMappings = [];
+            this.__originalMappings = [];
+            this._parseMappings(this._mappings, this.sourceRoot);
+          }
+          return this.__generatedMappings;
+        }
+      });
+      SourceMapConsumer.prototype.__originalMappings = null;
+      Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
+        get: function () {
+          if (!this.__originalMappings) {
+            this.__generatedMappings = [];
+            this.__originalMappings = [];
+            this._parseMappings(this._mappings, this.sourceRoot);
+          }
+          return this.__originalMappings;
+        }
+      });
+      SourceMapConsumer.prototype._nextCharIsMappingSeparator = function SourceMapConsumer_nextCharIsMappingSeparator(aStr) {
+        var c = aStr.charAt(0);
+        return c === ';' || c === ',';
+      };
+      SourceMapConsumer.prototype._parseMappings = function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+        throw new Error('Subclasses must implement _parseMappings');
+      };
+      SourceMapConsumer.GENERATED_ORDER = 1;
+      SourceMapConsumer.ORIGINAL_ORDER = 2;
+      SourceMapConsumer.prototype.eachMapping = function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
+        var context = aContext || null;
+        var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
+        var mappings;
+        switch (order) {
+        case SourceMapConsumer.GENERATED_ORDER:
+          mappings = this._generatedMappings;
+          break;
+        case SourceMapConsumer.ORIGINAL_ORDER:
+          mappings = this._originalMappings;
+          break;
+        default:
+          throw new Error('Unknown order of iteration.');
+        }
+        var sourceRoot = this.sourceRoot;
+        mappings.map(function (mapping) {
+          var source = mapping.source;
+          if (source != null && sourceRoot != null) {
+            source = util.join(sourceRoot, source);
+          }
+          return {
+            source: source,
+            generatedLine: mapping.generatedLine,
+            generatedColumn: mapping.generatedColumn,
+            originalLine: mapping.originalLine,
+            originalColumn: mapping.originalColumn,
+            name: mapping.name
+          };
+        }).forEach(aCallback, context);
+      };
+      SourceMapConsumer.prototype.allGeneratedPositionsFor = function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
+        var needle = {
+            source: util.getArg(aArgs, 'source'),
+            originalLine: util.getArg(aArgs, 'line'),
+            originalColumn: Infinity
+          };
+        if (this.sourceRoot != null) {
+          needle.source = util.relative(this.sourceRoot, needle.source);
+        }
+        var mappings = [];
+        var index = this._findMapping(needle, this._originalMappings, 'originalLine', 'originalColumn', util.compareByOriginalPositions);
+        if (index >= 0) {
+          var mapping = this._originalMappings[index];
+          while (mapping && mapping.originalLine === needle.originalLine) {
+            mappings.push({
+              line: util.getArg(mapping, 'generatedLine', null),
+              column: util.getArg(mapping, 'generatedColumn', null),
+              lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+            });
+            mapping = this._originalMappings[--index];
+          }
+        }
+        return mappings.reverse();
+      };
+      exports.SourceMapConsumer = SourceMapConsumer;
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
+      var binarySearch = require('/node_modules/source-map/lib/source-map/binary-search.js', module);
+      var ArraySet = require('/node_modules/source-map/lib/source-map/array-set.js', module).ArraySet;
+      var base64VLQ = require('/node_modules/source-map/lib/source-map/base64-vlq.js', module);
+      var SourceMapConsumer = require('/node_modules/source-map/lib/source-map/source-map-consumer.js', module).SourceMapConsumer;
+      function BasicSourceMapConsumer(aSourceMap) {
+        var sourceMap = aSourceMap;
+        if (typeof aSourceMap === 'string') {
+          sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+        }
+        var version = util.getArg(sourceMap, 'version');
+        var sources = util.getArg(sourceMap, 'sources');
+        var names = util.getArg(sourceMap, 'names', []);
+        var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
+        var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
+        var mappings = util.getArg(sourceMap, 'mappings');
+        var file = util.getArg(sourceMap, 'file', null);
+        if (version != this._version) {
+          throw new Error('Unsupported version: ' + version);
+        }
+        sources = sources.map(util.normalize);
+        this._names = ArraySet.fromArray(names, true);
+        this._sources = ArraySet.fromArray(sources, true);
+        this.sourceRoot = sourceRoot;
+        this.sourcesContent = sourcesContent;
+        this._mappings = mappings;
+        this.file = file;
+      }
+      BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
+      BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;
+      BasicSourceMapConsumer.fromSourceMap = function SourceMapConsumer_fromSourceMap(aSourceMap) {
+        var smc = Object.create(BasicSourceMapConsumer.prototype);
+        smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
+        smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
+        smc.sourceRoot = aSourceMap._sourceRoot;
+        smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(), smc.sourceRoot);
+        smc.file = aSourceMap._file;
+        smc.__generatedMappings = aSourceMap._mappings.toArray().slice();
+        smc.__originalMappings = aSourceMap._mappings.toArray().slice().sort(util.compareByOriginalPositions);
+        return smc;
+      };
+      BasicSourceMapConsumer.prototype._version = 3;
+      Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
+        get: function () {
+          return this._sources.toArray().map(function (s) {
+            return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
+          }, this);
+        }
+      });
+      BasicSourceMapConsumer.prototype._parseMappings = function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+        var generatedLine = 1;
+        var previousGeneratedColumn = 0;
+        var previousOriginalLine = 0;
+        var previousOriginalColumn = 0;
+        var previousSource = 0;
+        var previousName = 0;
+        var str = aStr;
+        var temp = {};
+        var mapping;
+        while (str.length > 0) {
+          if (str.charAt(0) === ';') {
+            generatedLine++;
+            str = str.slice(1);
+            previousGeneratedColumn = 0;
+          } else if (str.charAt(0) === ',') {
+            str = str.slice(1);
+          } else {
+            mapping = {};
+            mapping.generatedLine = generatedLine;
+            base64VLQ.decode(str, temp);
+            mapping.generatedColumn = previousGeneratedColumn + temp.value;
+            previousGeneratedColumn = mapping.generatedColumn;
+            str = temp.rest;
+            if (str.length > 0 && !this._nextCharIsMappingSeparator(str)) {
+              base64VLQ.decode(str, temp);
+              mapping.source = this._sources.at(previousSource + temp.value);
+              previousSource += temp.value;
+              str = temp.rest;
+              if (str.length === 0 || this._nextCharIsMappingSeparator(str)) {
+                throw new Error('Found a source, but no line and column');
+              }
+              base64VLQ.decode(str, temp);
+              mapping.originalLine = previousOriginalLine + temp.value;
+              previousOriginalLine = mapping.originalLine;
+              mapping.originalLine += 1;
+              str = temp.rest;
+              if (str.length === 0 || this._nextCharIsMappingSeparator(str)) {
+                throw new Error('Found a source and line, but no column');
+              }
+              base64VLQ.decode(str, temp);
+              mapping.originalColumn = previousOriginalColumn + temp.value;
+              previousOriginalColumn = mapping.originalColumn;
+              str = temp.rest;
+              if (str.length > 0 && !this._nextCharIsMappingSeparator(str)) {
+                base64VLQ.decode(str, temp);
+                mapping.name = this._names.at(previousName + temp.value);
+                previousName += temp.value;
+                str = temp.rest;
+              }
+            }
+            this.__generatedMappings.push(mapping);
+            if (typeof mapping.originalLine === 'number') {
+              this.__originalMappings.push(mapping);
+            }
+          }
+        }
+        this.__generatedMappings.sort(util.compareByGeneratedPositions);
+        this.__originalMappings.sort(util.compareByOriginalPositions);
+      };
+      BasicSourceMapConsumer.prototype._findMapping = function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName, aColumnName, aComparator) {
+        if (aNeedle[aLineName] <= 0) {
+          throw new TypeError('Line must be greater than or equal to 1, got ' + aNeedle[aLineName]);
+        }
+        if (aNeedle[aColumnName] < 0) {
+          throw new TypeError('Column must be greater than or equal to 0, got ' + aNeedle[aColumnName]);
+        }
+        return binarySearch.search(aNeedle, aMappings, aComparator);
+      };
+      BasicSourceMapConsumer.prototype.computeColumnSpans = function SourceMapConsumer_computeColumnSpans() {
+        for (var index = 0; index < this._generatedMappings.length; ++index) {
+          var mapping = this._generatedMappings[index];
+          if (index + 1 < this._generatedMappings.length) {
+            var nextMapping = this._generatedMappings[index + 1];
+            if (mapping.generatedLine === nextMapping.generatedLine) {
+              mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
+              continue;
+            }
+          }
+          mapping.lastGeneratedColumn = Infinity;
+        }
+      };
+      BasicSourceMapConsumer.prototype.originalPositionFor = function SourceMapConsumer_originalPositionFor(aArgs) {
+        var needle = {
+            generatedLine: util.getArg(aArgs, 'line'),
+            generatedColumn: util.getArg(aArgs, 'column')
+          };
+        var index = this._findMapping(needle, this._generatedMappings, 'generatedLine', 'generatedColumn', util.compareByGeneratedPositions);
+        if (index >= 0) {
+          var mapping = this._generatedMappings[index];
+          if (mapping.generatedLine === needle.generatedLine) {
+            var source = util.getArg(mapping, 'source', null);
+            if (source != null && this.sourceRoot != null) {
+              source = util.join(this.sourceRoot, source);
+            }
+            return {
+              source: source,
+              line: util.getArg(mapping, 'originalLine', null),
+              column: util.getArg(mapping, 'originalColumn', null),
+              name: util.getArg(mapping, 'name', null)
+            };
+          }
+        }
+        return {
+          source: null,
+          line: null,
+          column: null,
+          name: null
+        };
+      };
+      BasicSourceMapConsumer.prototype.sourceContentFor = function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
+        if (!this.sourcesContent) {
+          return null;
+        }
+        if (this.sourceRoot != null) {
+          aSource = util.relative(this.sourceRoot, aSource);
+        }
+        if (this._sources.has(aSource)) {
+          return this.sourcesContent[this._sources.indexOf(aSource)];
+        }
+        var url;
+        if (this.sourceRoot != null && (url = util.urlParse(this.sourceRoot))) {
+          var fileUriAbsPath = aSource.replace(/^file:\/\//, '');
+          if (url.scheme == 'file' && this._sources.has(fileUriAbsPath)) {
+            return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)];
+          }
+          if ((!url.path || url.path == '/') && this._sources.has('/' + aSource)) {
+            return this.sourcesContent[this._sources.indexOf('/' + aSource)];
+          }
+        }
+        if (nullOnMissing) {
+          return null;
+        } else {
+          throw new Error('"' + aSource + '" is not in the SourceMap.');
+        }
+      };
+      BasicSourceMapConsumer.prototype.generatedPositionFor = function SourceMapConsumer_generatedPositionFor(aArgs) {
+        var needle = {
+            source: util.getArg(aArgs, 'source'),
+            originalLine: util.getArg(aArgs, 'line'),
+            originalColumn: util.getArg(aArgs, 'column')
+          };
+        if (this.sourceRoot != null) {
+          needle.source = util.relative(this.sourceRoot, needle.source);
+        }
+        var index = this._findMapping(needle, this._originalMappings, 'originalLine', 'originalColumn', util.compareByOriginalPositions);
+        if (index >= 0) {
+          var mapping = this._originalMappings[index];
+          return {
+            line: util.getArg(mapping, 'generatedLine', null),
+            column: util.getArg(mapping, 'generatedColumn', null),
+            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+          };
+        }
+        return {
+          line: null,
+          column: null,
+          lastColumn: null
+        };
+      };
+      exports.BasicSourceMapConsumer = BasicSourceMapConsumer;
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/binary-search.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare) {
+        var mid = Math.floor((aHigh - aLow) / 2) + aLow;
+        var cmp = aCompare(aNeedle, aHaystack[mid], true);
+        if (cmp === 0) {
+          return mid;
+        } else if (cmp > 0) {
+          if (aHigh - mid > 1) {
+            return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare);
+          }
+          return mid;
+        } else {
+          if (mid - aLow > 1) {
+            return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare);
+          }
+          return aLow < 0 ? -1 : aLow;
+        }
+      }
+      exports.search = function search(aNeedle, aHaystack, aCompare) {
+        if (aHaystack.length === 0) {
+          return -1;
+        }
+        return recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack, aCompare);
+      };
+    });
+  });
+  require.define('/node_modules/source-map/lib/source-map/indexed-source-map-consumer.js', function (module, exports, __dirname, __filename) {
+    if (typeof define !== 'function') {
+      var define = require('/node_modules/amdefine/amdefine.js', module)(module, require);
+    }
+    define(function (require, exports, module) {
+      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
+      var binarySearch = require('/node_modules/source-map/lib/source-map/binary-search.js', module);
+      var SourceMapConsumer = require('/node_modules/source-map/lib/source-map/source-map-consumer.js', module).SourceMapConsumer;
+      var BasicSourceMapConsumer = require('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', module).BasicSourceMapConsumer;
+      function IndexedSourceMapConsumer(aSourceMap) {
+        var sourceMap = aSourceMap;
+        if (typeof aSourceMap === 'string') {
+          sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+        }
+        var version = util.getArg(sourceMap, 'version');
+        var sections = util.getArg(sourceMap, 'sections');
+        if (version != this._version) {
+          throw new Error('Unsupported version: ' + version);
+        }
+        var lastOffset = {
+            line: -1,
+            column: 0
+          };
+        this._sections = sections.map(function (s) {
+          if (s.url) {
+            throw new Error('Support for url field in sections not implemented.');
+          }
+          var offset = util.getArg(s, 'offset');
+          var offsetLine = util.getArg(offset, 'line');
+          var offsetColumn = util.getArg(offset, 'column');
+          if (offsetLine < lastOffset.line || offsetLine === lastOffset.line && offsetColumn < lastOffset.column) {
+            throw new Error('Section offsets must be ordered and non-overlapping.');
+          }
+          lastOffset = offset;
+          return {
+            generatedOffset: {
+              generatedLine: offsetLine + 1,
+              generatedColumn: offsetColumn + 1
+            },
+            consumer: new SourceMapConsumer(util.getArg(s, 'map'))
+          };
+        });
+      }
+      IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
+      IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;
+      IndexedSourceMapConsumer.prototype._version = 3;
+      Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
+        get: function () {
+          var sources = [];
+          for (var i = 0; i < this._sections.length; i++) {
+            for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
+              sources.push(this._sections[i].consumer.sources[j]);
+            }
+          }
+          ;
+          return sources;
+        }
+      });
+      IndexedSourceMapConsumer.prototype.originalPositionFor = function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
+        var needle = {
+            generatedLine: util.getArg(aArgs, 'line'),
+            generatedColumn: util.getArg(aArgs, 'column')
+          };
+        var sectionIndex = binarySearch.search(needle, this._sections, function (needle, section) {
+            var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
+            if (cmp) {
+              return cmp;
+            }
+            return needle.generatedColumn - section.generatedOffset.generatedColumn;
+          });
+        var section = this._sections[sectionIndex];
+        if (!section) {
+          return {
+            source: null,
+            line: null,
+            column: null,
+            name: null
+          };
+        }
+        return section.consumer.originalPositionFor({
+          line: needle.generatedLine - (section.generatedOffset.generatedLine - 1),
+          column: needle.generatedColumn - (section.generatedOffset.generatedLine === needle.generatedLine ? section.generatedOffset.generatedColumn - 1 : 0)
+        });
+      };
+      IndexedSourceMapConsumer.prototype.sourceContentFor = function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
+        for (var i = 0; i < this._sections.length; i++) {
+          var section = this._sections[i];
+          var content = section.consumer.sourceContentFor(aSource, true);
+          if (content) {
+            return content;
+          }
+        }
+        if (nullOnMissing) {
+          return null;
+        } else {
+          throw new Error('"' + aSource + '" is not in the SourceMap.');
+        }
+      };
+      IndexedSourceMapConsumer.prototype.generatedPositionFor = function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
+        for (var i = 0; i < this._sections.length; i++) {
+          var section = this._sections[i];
+          if (section.consumer.sources.indexOf(util.getArg(aArgs, 'source')) === -1) {
+            continue;
+          }
+          var generatedPosition = section.consumer.generatedPositionFor(aArgs);
+          if (generatedPosition) {
+            var ret = {
+                line: generatedPosition.line + (section.generatedOffset.generatedLine - 1),
+                column: generatedPosition.column + (section.generatedOffset.generatedLine === generatedPosition.line ? section.generatedOffset.generatedColumn - 1 : 0)
+              };
+            return ret;
+          }
+        }
+        return {
+          line: null,
+          column: null
+        };
+      };
+      IndexedSourceMapConsumer.prototype._parseMappings = function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+        this.__generatedMappings = [];
+        this.__originalMappings = [];
+        for (var i = 0; i < this._sections.length; i++) {
+          var section = this._sections[i];
+          var sectionMappings = section.consumer._generatedMappings;
+          for (var j = 0; j < sectionMappings.length; j++) {
+            var mapping = sectionMappings[i];
+            var source = mapping.source;
+            var sourceRoot = section.consumer.sourceRoot;
+            if (source != null && sourceRoot != null) {
+              source = util.join(sourceRoot, source);
+            }
+            var adjustedMapping = {
+                source: source,
+                generatedLine: mapping.generatedLine + (section.generatedOffset.generatedLine - 1),
+                generatedColumn: mapping.column + (section.generatedOffset.generatedLine === mapping.generatedLine) ? section.generatedOffset.generatedColumn - 1 : 0,
+                originalLine: mapping.originalLine,
+                originalColumn: mapping.originalColumn,
+                name: mapping.name
+              };
+            this.__generatedMappings.push(adjustedMapping);
+            if (typeof adjustedMapping.originalLine === 'number') {
+              this.__originalMappings.push(adjustedMapping);
+            }
+          }
+          ;
+        }
+        ;
+        this.__generatedMappings.sort(util.compareByGeneratedPositions);
+        this.__originalMappings.sort(util.compareByOriginalPositions);
+      };
+      exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;
+    });
+  });
+  require.define('/node_modules/esutils/lib/utils.js', function (module, exports, __dirname, __filename) {
+    (function () {
+      'use strict';
+      exports.ast = require('/node_modules/esutils/lib/ast.js', module);
+      exports.code = require('/node_modules/esutils/lib/code.js', module);
+      exports.keyword = require('/node_modules/esutils/lib/keyword.js', module);
+    }());
+  });
+  require.define('/node_modules/esutils/lib/keyword.js', function (module, exports, __dirname, __filename) {
+    (function () {
+      'use strict';
+      var code = require('/node_modules/esutils/lib/code.js', module);
+      function isStrictModeReservedWordES6(id) {
+        switch (id) {
+        case 'implements':
+        case 'interface':
+        case 'package':
+        case 'private':
+        case 'protected':
+        case 'public':
+        case 'static':
+        case 'let':
+          return true;
+        default:
+          return false;
+        }
+      }
+      function isKeywordES5(id, strict) {
+        if (!strict && id === 'yield') {
+          return false;
+        }
+        return isKeywordES6(id, strict);
+      }
+      function isKeywordES6(id, strict) {
+        if (strict && isStrictModeReservedWordES6(id)) {
+          return true;
+        }
+        switch (id.length) {
+        case 2:
+          return id === 'if' || id === 'in' || id === 'do';
+        case 3:
+          return id === 'var' || id === 'for' || id === 'new' || id === 'try';
+        case 4:
+          return id === 'this' || id === 'else' || id === 'case' || id === 'void' || id === 'with' || id === 'enum';
+        case 5:
+          return id === 'while' || id === 'break' || id === 'catch' || id === 'throw' || id === 'const' || id === 'yield' || id === 'class' || id === 'super';
+        case 6:
+          return id === 'return' || id === 'typeof' || id === 'delete' || id === 'switch' || id === 'export' || id === 'import';
+        case 7:
+          return id === 'default' || id === 'finally' || id === 'extends';
+        case 8:
+          return id === 'function' || id === 'continue' || id === 'debugger';
+        case 10:
+          return id === 'instanceof';
+        default:
+          return false;
+        }
+      }
+      function isReservedWordES5(id, strict) {
+        return id === 'null' || id === 'true' || id === 'false' || isKeywordES5(id, strict);
+      }
+      function isReservedWordES6(id, strict) {
+        return id === 'null' || id === 'true' || id === 'false' || isKeywordES6(id, strict);
+      }
+      function isRestrictedWord(id) {
+        return id === 'eval' || id === 'arguments';
+      }
+      function isIdentifierNameES5(id) {
+        var i, iz, ch;
+        if (id.length === 0) {
+          return false;
+        }
+        ch = id.charCodeAt(0);
+        if (!code.isIdentifierStartES5(ch)) {
+          return false;
+        }
+        for (i = 1, iz = id.length; i < iz; ++i) {
+          ch = id.charCodeAt(i);
+          if (!code.isIdentifierPartES5(ch)) {
+            return false;
+          }
+        }
+        return true;
+      }
+      function decodeUtf16(lead, trail) {
+        return (lead - 55296) * 1024 + (trail - 56320) + 65536;
+      }
+      function isIdentifierNameES6(id) {
+        var i, iz, ch, lowCh, check;
+        if (id.length === 0) {
+          return false;
+        }
+        check = code.isIdentifierStartES6;
+        for (i = 0, iz = id.length; i < iz; ++i) {
+          ch = id.charCodeAt(i);
+          if (55296 <= ch && ch <= 56319) {
+            ++i;
+            if (i >= iz) {
+              return false;
+            }
+            lowCh = id.charCodeAt(i);
+            if (!(56320 <= lowCh && lowCh <= 57343)) {
+              return false;
+            }
+            ch = decodeUtf16(ch, lowCh);
+          }
+          if (!check(ch)) {
+            return false;
+          }
+          check = code.isIdentifierPartES6;
+        }
+        return true;
+      }
+      function isIdentifierES5(id, strict) {
+        return isIdentifierNameES5(id) && !isReservedWordES5(id, strict);
+      }
+      function isIdentifierES6(id, strict) {
+        return isIdentifierNameES6(id) && !isReservedWordES6(id, strict);
+      }
+      module.exports = {
+        isKeywordES5: isKeywordES5,
+        isKeywordES6: isKeywordES6,
+        isReservedWordES5: isReservedWordES5,
+        isReservedWordES6: isReservedWordES6,
+        isRestrictedWord: isRestrictedWord,
+        isIdentifierNameES5: isIdentifierNameES5,
+        isIdentifierNameES6: isIdentifierNameES6,
+        isIdentifierES5: isIdentifierES5,
+        isIdentifierES6: isIdentifierES6
+      };
+    }());
+  });
+  require.define('/node_modules/esutils/lib/code.js', function (module, exports, __dirname, __filename) {
+    (function () {
+      'use strict';
+      var ES6Regex, ES5Regex, NON_ASCII_WHITESPACES, IDENTIFIER_START, IDENTIFIER_PART, ch;
+      ES5Regex = {
+        NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\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]/,
+        NonAsciiIdentifierPart: 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+        NonAsciiIdentifierPart: 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+      };
+      function isDecimalDigit(ch) {
+        return 48 <= ch && ch <= 57;
+      }
+      function isHexDigit(ch) {
+        return 48 <= ch && ch <= 57 || 97 <= ch && ch <= 102 || 65 <= ch && ch <= 70;
+      }
+      function isOctalDigit(ch) {
+        return ch >= 48 && ch <= 55;
+      }
+      NON_ASCII_WHITESPACES = [
+        5760,
+        6158,
+        8192,
+        8193,
+        8194,
+        8195,
+        8196,
+        8197,
+        8198,
+        8199,
+        8200,
+        8201,
+        8202,
+        8239,
+        8287,
+        12288,
+        65279
+      ];
+      function isWhiteSpace(ch) {
+        return ch === 32 || ch === 9 || ch === 11 || ch === 12 || ch === 160 || ch >= 5760 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0;
+      }
+      function isLineTerminator(ch) {
+        return ch === 10 || ch === 13 || ch === 8232 || ch === 8233;
+      }
+      function fromCodePoint(cp) {
+        if (cp <= 65535) {
+          return String.fromCharCode(cp);
+        }
+        var cu1 = String.fromCharCode(Math.floor((cp - 65536) / 1024) + 55296);
+        var cu2 = String.fromCharCode((cp - 65536) % 1024 + 56320);
+        return cu1 + cu2;
+      }
+      IDENTIFIER_START = new Array(128);
+      for (ch = 0; ch < 128; ++ch) {
+        IDENTIFIER_START[ch] = ch >= 97 && ch <= 122 || ch >= 65 && ch <= 90 || ch === 36 || ch === 95;
+      }
+      IDENTIFIER_PART = new Array(128);
+      for (ch = 0; ch < 128; ++ch) {
+        IDENTIFIER_PART[ch] = ch >= 97 && ch <= 122 || ch >= 65 && ch <= 90 || ch >= 48 && ch <= 57 || ch === 36 || ch === 95;
+      }
+      function isIdentifierStartES5(ch) {
+        return ch < 128 ? IDENTIFIER_START[ch] : ES5Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
+      }
+      function isIdentifierPartES5(ch) {
+        return ch < 128 ? IDENTIFIER_PART[ch] : ES5Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
+      }
+      function isIdentifierStartES6(ch) {
+        return ch < 128 ? IDENTIFIER_START[ch] : ES6Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
+      }
+      function isIdentifierPartES6(ch) {
+        return ch < 128 ? IDENTIFIER_PART[ch] : ES6Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
+      }
+      module.exports = {
+        isDecimalDigit: isDecimalDigit,
+        isHexDigit: isHexDigit,
+        isOctalDigit: isOctalDigit,
+        isWhiteSpace: isWhiteSpace,
+        isLineTerminator: isLineTerminator,
+        isIdentifierStartES5: isIdentifierStartES5,
+        isIdentifierPartES5: isIdentifierPartES5,
+        isIdentifierStartES6: isIdentifierStartES6,
+        isIdentifierPartES6: isIdentifierPartES6
+      };
+    }());
+  });
+  require.define('/node_modules/esutils/lib/ast.js', function (module, exports, __dirname, __filename) {
+    (function () {
+      'use strict';
+      function isExpression(node) {
+        if (node == null) {
+          return false;
+        }
+        switch (node.type) {
+        case 'ArrayExpression':
+        case 'AssignmentExpression':
+        case 'BinaryExpression':
+        case 'CallExpression':
+        case 'ConditionalExpression':
+        case 'FunctionExpression':
+        case 'Identifier':
+        case 'Literal':
+        case 'LogicalExpression':
+        case 'MemberExpression':
+        case 'NewExpression':
+        case 'ObjectExpression':
+        case 'SequenceExpression':
+        case 'ThisExpression':
+        case 'UnaryExpression':
+        case 'UpdateExpression':
+          return true;
+        }
+        return false;
+      }
+      function isIterationStatement(node) {
+        if (node == null) {
+          return false;
+        }
+        switch (node.type) {
+        case 'DoWhileStatement':
+        case 'ForInStatement':
+        case 'ForStatement':
+        case 'WhileStatement':
+          return true;
+        }
+        return false;
+      }
+      function isStatement(node) {
+        if (node == null) {
+          return false;
+        }
+        switch (node.type) {
+        case 'BlockStatement':
+        case 'BreakStatement':
+        case 'ContinueStatement':
+        case 'DebuggerStatement':
+        case 'DoWhileStatement':
+        case 'EmptyStatement':
+        case 'ExpressionStatement':
+        case 'ForInStatement':
+        case 'ForStatement':
+        case 'IfStatement':
+        case 'LabeledStatement':
+        case 'ReturnStatement':
+        case 'SwitchStatement':
+        case 'ThrowStatement':
+        case 'TryStatement':
+        case 'VariableDeclaration':
+        case 'WhileStatement':
+        case 'WithStatement':
+          return true;
+        }
+        return false;
+      }
+      function isSourceElement(node) {
+        return isStatement(node) || node != null && node.type === 'FunctionDeclaration';
+      }
+      function trailingStatement(node) {
+        switch (node.type) {
+        case 'IfStatement':
+          if (node.alternate != null) {
+            return node.alternate;
+          }
+          return node.consequent;
+        case 'LabeledStatement':
+        case 'ForStatement':
+        case 'ForInStatement':
+        case 'WhileStatement':
+        case 'WithStatement':
+          return node.body;
+        }
+        return null;
+      }
+      function isProblematicIfStatement(node) {
+        var current;
+        if (node.type !== 'IfStatement') {
+          return false;
+        }
+        if (node.alternate == null) {
+          return false;
+        }
+        current = node.consequent;
+        do {
+          if (current.type === 'IfStatement') {
+            if (current.alternate == null) {
+              return true;
+            }
+          }
+          current = trailingStatement(current);
+        } while (current);
+        return false;
+      }
+      module.exports = {
+        isExpression: isExpression,
+        isStatement: isStatement,
+        isIterationStatement: isIterationStatement,
+        isSourceElement: isSourceElement,
+        isProblematicIfStatement: isProblematicIfStatement,
+        trailingStatement: trailingStatement
+      };
+    }());
+  });
+  require.define('/node_modules/estraverse/estraverse.js', function (module, exports, __dirname, __filename) {
+    (function (root, factory) {
+      'use strict';
+      if (typeof define === 'function' && define.amd) {
+        define(['exports'], factory);
+      } else if (typeof exports !== 'undefined') {
+        factory(exports);
+      } else {
+        factory(root.estraverse = {});
+      }
+    }(this, function clone(exports) {
+      'use strict';
+      var Syntax, isArray, VisitorOption, VisitorKeys, objectCreate, objectKeys, BREAK, SKIP, REMOVE;
+      function ignoreJSHintError() {
+      }
+      isArray = Array.isArray;
+      if (!isArray) {
+        isArray = function isArray(array) {
+          return Object.prototype.toString.call(array) === '[object Array]';
+        };
+      }
+      function deepCopy(obj) {
+        var ret = {}, key, val;
+        for (key in obj) {
+          if (obj.hasOwnProperty(key)) {
+            val = obj[key];
+            if (typeof val === 'object' && val !== null) {
+              ret[key] = deepCopy(val);
+            } else {
+              ret[key] = val;
+            }
+          }
+        }
+        return ret;
+      }
+      function shallowCopy(obj) {
+        var ret = {}, key;
+        for (key in obj) {
+          if (obj.hasOwnProperty(key)) {
+            ret[key] = obj[key];
+          }
+        }
+        return ret;
+      }
+      ignoreJSHintError(shallowCopy);
+      function upperBound(array, func) {
+        var diff, len, i, current;
+        len = array.length;
+        i = 0;
+        while (len) {
+          diff = len >>> 1;
+          current = i + diff;
+          if (func(array[current])) {
+            len = diff;
+          } else {
+            i = current + 1;
+            len -= diff + 1;
+          }
+        }
+        return i;
+      }
+      function lowerBound(array, func) {
+        var diff, len, i, current;
+        len = array.length;
+        i = 0;
+        while (len) {
+          diff = len >>> 1;
+          current = i + diff;
+          if (func(array[current])) {
+            i = current + 1;
+            len -= diff + 1;
+          } else {
+            len = diff;
+          }
+        }
+        return i;
+      }
+      ignoreJSHintError(lowerBound);
+      objectCreate = Object.create || function () {
+        function F() {
+        }
+        return function (o) {
+          F.prototype = o;
+          return new F;
+        };
+      }();
+      objectKeys = Object.keys || function (o) {
+        var keys = [], key;
+        for (key in o) {
+          keys.push(key);
+        }
+        return keys;
+      };
+      function extend(to, from) {
+        var keys = objectKeys(from), key, i, len;
+        for (i = 0, len = keys.length; i < len; i += 1) {
+          key = keys[i];
+          to[key] = from[key];
+        }
+        return to;
+      }
+      Syntax = {
+        AssignmentExpression: 'AssignmentExpression',
+        ArrayExpression: 'ArrayExpression',
+        ArrayPattern: 'ArrayPattern',
+        ArrowFunctionExpression: 'ArrowFunctionExpression',
+        AwaitExpression: 'AwaitExpression',
+        BlockStatement: 'BlockStatement',
+        BinaryExpression: 'BinaryExpression',
+        BreakStatement: 'BreakStatement',
+        CallExpression: 'CallExpression',
+        CatchClause: 'CatchClause',
+        ClassBody: 'ClassBody',
+        ClassDeclaration: 'ClassDeclaration',
+        ClassExpression: 'ClassExpression',
+        ComprehensionBlock: 'ComprehensionBlock',
+        ComprehensionExpression: 'ComprehensionExpression',
+        ConditionalExpression: 'ConditionalExpression',
+        ContinueStatement: 'ContinueStatement',
+        DebuggerStatement: 'DebuggerStatement',
+        DirectiveStatement: 'DirectiveStatement',
+        DoWhileStatement: 'DoWhileStatement',
+        EmptyStatement: 'EmptyStatement',
+        ExportBatchSpecifier: 'ExportBatchSpecifier',
+        ExportDeclaration: 'ExportDeclaration',
+        ExportSpecifier: 'ExportSpecifier',
+        ExpressionStatement: 'ExpressionStatement',
+        ForStatement: 'ForStatement',
+        ForInStatement: 'ForInStatement',
+        ForOfStatement: 'ForOfStatement',
+        FunctionDeclaration: 'FunctionDeclaration',
+        FunctionExpression: 'FunctionExpression',
+        GeneratorExpression: 'GeneratorExpression',
+        Identifier: 'Identifier',
+        IfStatement: 'IfStatement',
+        ImportDeclaration: 'ImportDeclaration',
+        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
+        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
+        ImportSpecifier: 'ImportSpecifier',
+        Literal: 'Literal',
+        LabeledStatement: 'LabeledStatement',
+        LogicalExpression: 'LogicalExpression',
+        MemberExpression: 'MemberExpression',
+        MethodDefinition: 'MethodDefinition',
+        ModuleSpecifier: 'ModuleSpecifier',
+        NewExpression: 'NewExpression',
+        ObjectExpression: 'ObjectExpression',
+        ObjectPattern: 'ObjectPattern',
+        Program: 'Program',
+        Property: 'Property',
+        ReturnStatement: 'ReturnStatement',
+        SequenceExpression: 'SequenceExpression',
+        SpreadElement: 'SpreadElement',
+        SwitchStatement: 'SwitchStatement',
+        SwitchCase: 'SwitchCase',
+        TaggedTemplateExpression: 'TaggedTemplateExpression',
+        TemplateElement: 'TemplateElement',
+        TemplateLiteral: 'TemplateLiteral',
+        ThisExpression: 'ThisExpression',
+        ThrowStatement: 'ThrowStatement',
+        TryStatement: 'TryStatement',
+        UnaryExpression: 'UnaryExpression',
+        UpdateExpression: 'UpdateExpression',
+        VariableDeclaration: 'VariableDeclaration',
+        VariableDeclarator: 'VariableDeclarator',
+        WhileStatement: 'WhileStatement',
+        WithStatement: 'WithStatement',
+        YieldExpression: 'YieldExpression'
+      };
+      VisitorKeys = {
+        AssignmentExpression: [
+          'left',
+          'right'
+        ],
+        ArrayExpression: ['elements'],
+        ArrayPattern: ['elements'],
+        ArrowFunctionExpression: [
+          'params',
+          'defaults',
+          'rest',
+          'body'
+        ],
+        AwaitExpression: ['argument'],
+        BlockStatement: ['body'],
+        BinaryExpression: [
+          'left',
+          'right'
+        ],
+        BreakStatement: ['label'],
+        CallExpression: [
+          'callee',
+          'arguments'
+        ],
+        CatchClause: [
+          'param',
+          'body'
+        ],
+        ClassBody: ['body'],
+        ClassDeclaration: [
+          'id',
+          'body',
+          'superClass'
+        ],
+        ClassExpression: [
+          'id',
+          'body',
+          'superClass'
+        ],
+        ComprehensionBlock: [
+          'left',
+          'right'
+        ],
+        ComprehensionExpression: [
+          'blocks',
+          'filter',
+          'body'
+        ],
+        ConditionalExpression: [
+          'test',
+          'consequent',
+          'alternate'
+        ],
+        ContinueStatement: ['label'],
+        DebuggerStatement: [],
+        DirectiveStatement: [],
+        DoWhileStatement: [
+          'body',
+          'test'
+        ],
+        EmptyStatement: [],
+        ExportBatchSpecifier: [],
+        ExportDeclaration: [
+          'declaration',
+          'specifiers',
+          'source'
+        ],
+        ExportSpecifier: [
+          'id',
+          'name'
+        ],
+        ExpressionStatement: ['expression'],
+        ForStatement: [
+          'init',
+          'test',
+          'update',
+          'body'
+        ],
+        ForInStatement: [
+          'left',
+          'right',
+          'body'
+        ],
+        ForOfStatement: [
+          'left',
+          'right',
+          'body'
+        ],
+        FunctionDeclaration: [
+          'id',
+          'params',
+          'defaults',
+          'rest',
+          'body'
+        ],
+        FunctionExpression: [
+          'id',
+          'params',
+          'defaults',
+          'rest',
+          'body'
+        ],
+        GeneratorExpression: [
+          'blocks',
+          'filter',
+          'body'
+        ],
+        Identifier: [],
+        IfStatement: [
+          'test',
+          'consequent',
+          'alternate'
+        ],
+        ImportDeclaration: [
+          'specifiers',
+          'source'
+        ],
+        ImportDefaultSpecifier: ['id'],
+        ImportNamespaceSpecifier: ['id'],
+        ImportSpecifier: [
+          'id',
+          'name'
+        ],
+        Literal: [],
+        LabeledStatement: [
+          'label',
+          'body'
+        ],
+        LogicalExpression: [
+          'left',
+          'right'
+        ],
+        MemberExpression: [
+          'object',
+          'property'
+        ],
+        MethodDefinition: [
+          'key',
+          'value'
+        ],
+        ModuleSpecifier: [],
+        NewExpression: [
+          'callee',
+          'arguments'
+        ],
+        ObjectExpression: ['properties'],
+        ObjectPattern: ['properties'],
+        Program: ['body'],
+        Property: [
+          'key',
+          'value'
+        ],
+        ReturnStatement: ['argument'],
+        SequenceExpression: ['expressions'],
+        SpreadElement: ['argument'],
+        SwitchStatement: [
+          'discriminant',
+          'cases'
+        ],
+        SwitchCase: [
+          'test',
+          'consequent'
+        ],
+        TaggedTemplateExpression: [
+          'tag',
+          'quasi'
+        ],
+        TemplateElement: [],
+        TemplateLiteral: [
+          'quasis',
+          'expressions'
+        ],
+        ThisExpression: [],
+        ThrowStatement: ['argument'],
+        TryStatement: [
+          'block',
+          'handlers',
+          'handler',
+          'guardedHandlers',
+          'finalizer'
+        ],
+        UnaryExpression: ['argument'],
+        UpdateExpression: ['argument'],
+        VariableDeclaration: ['declarations'],
+        VariableDeclarator: [
+          'id',
+          'init'
+        ],
+        WhileStatement: [
+          'test',
+          'body'
+        ],
+        WithStatement: [
+          'object',
+          'body'
+        ],
+        YieldExpression: ['argument']
+      };
+      BREAK = {};
+      SKIP = {};
+      REMOVE = {};
+      VisitorOption = {
+        Break: BREAK,
+        Skip: SKIP,
+        Remove: REMOVE
+      };
+      function Reference(parent, key) {
+        this.parent = parent;
+        this.key = key;
+      }
+      Reference.prototype.replace = function replace(node) {
+        this.parent[this.key] = node;
+      };
+      Reference.prototype.remove = function remove() {
+        if (isArray(this.parent)) {
+          this.parent.splice(this.key, 1);
+          return true;
+        } else {
+          this.replace(null);
+          return false;
+        }
+      };
+      function Element(node, path, wrap, ref) {
+        this.node = node;
+        this.path = path;
+        this.wrap = wrap;
+        this.ref = ref;
+      }
+      function Controller() {
+      }
+      Controller.prototype.path = function path() {
+        var i, iz, j, jz, result, element;
+        function addToPath(result, path) {
+          if (isArray(path)) {
+            for (j = 0, jz = path.length; j < jz; ++j) {
+              result.push(path[j]);
+            }
+          } else {
+            result.push(path);
+          }
+        }
+        if (!this.__current.path) {
+          return null;
+        }
+        result = [];
+        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
+          element = this.__leavelist[i];
+          addToPath(result, element.path);
+        }
+        addToPath(result, this.__current.path);
+        return result;
+      };
+      Controller.prototype.type = function () {
+        var node = this.current();
+        return node.type || this.__current.wrap;
+      };
+      Controller.prototype.parents = function parents() {
+        var i, iz, result;
+        result = [];
+        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
+          result.push(this.__leavelist[i].node);
+        }
+        return result;
+      };
+      Controller.prototype.current = function current() {
+        return this.__current.node;
+      };
+      Controller.prototype.__execute = function __execute(callback, element) {
+        var previous, result;
+        result = undefined;
+        previous = this.__current;
+        this.__current = element;
+        this.__state = null;
+        if (callback) {
+          result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
+        }
+        this.__current = previous;
+        return result;
+      };
+      Controller.prototype.notify = function notify(flag) {
+        this.__state = flag;
+      };
+      Controller.prototype.skip = function () {
+        this.notify(SKIP);
+      };
+      Controller.prototype['break'] = function () {
+        this.notify(BREAK);
+      };
+      Controller.prototype.remove = function () {
+        this.notify(REMOVE);
+      };
+      Controller.prototype.__initialize = function (root, visitor) {
+        this.visitor = visitor;
+        this.root = root;
+        this.__worklist = [];
+        this.__leavelist = [];
+        this.__current = null;
+        this.__state = null;
+        this.__fallback = visitor.fallback === 'iteration';
+        this.__keys = VisitorKeys;
+        if (visitor.keys) {
+          this.__keys = extend(objectCreate(this.__keys), visitor.keys);
+        }
+      };
+      function isNode(node) {
+        if (node == null) {
+          return false;
+        }
+        return typeof node === 'object' && typeof node.type === 'string';
+      }
+      function isProperty(nodeType, key) {
+        return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
+      }
+      Controller.prototype.traverse = function traverse(root, visitor) {
+        var worklist, leavelist, element, node, nodeType, ret, key, current, current2, candidates, candidate, sentinel;
+        this.__initialize(root, visitor);
+        sentinel = {};
+        worklist = this.__worklist;
+        leavelist = this.__leavelist;
+        worklist.push(new Element(root, null, null, null));
+        leavelist.push(new Element(null, null, null, null));
+        while (worklist.length) {
+          element = worklist.pop();
+          if (element === sentinel) {
+            element = leavelist.pop();
+            ret = this.__execute(visitor.leave, element);
+            if (this.__state === BREAK || ret === BREAK) {
+              return;
+            }
+            continue;
+          }
+          if (element.node) {
+            ret = this.__execute(visitor.enter, element);
+            if (this.__state === BREAK || ret === BREAK) {
+              return;
+            }
+            worklist.push(sentinel);
+            leavelist.push(element);
+            if (this.__state === SKIP || ret === SKIP) {
+              continue;
+            }
+            node = element.node;
+            nodeType = element.wrap || node.type;
+            candidates = this.__keys[nodeType];
+            if (!candidates) {
+              if (this.__fallback) {
+                candidates = objectKeys(node);
+              } else {
+                throw new Error('Unknown node type ' + nodeType + '.');
+              }
+            }
+            current = candidates.length;
+            while ((current -= 1) >= 0) {
+              key = candidates[current];
+              candidate = node[key];
+              if (!candidate) {
+                continue;
+              }
+              if (isArray(candidate)) {
+                current2 = candidate.length;
+                while ((current2 -= 1) >= 0) {
+                  if (!candidate[current2]) {
+                    continue;
+                  }
+                  if (isProperty(nodeType, candidates[current])) {
+                    element = new Element(candidate[current2], [
+                      key,
+                      current2
+                    ], 'Property', null);
+                  } else if (isNode(candidate[current2])) {
+                    element = new Element(candidate[current2], [
+                      key,
+                      current2
+                    ], null, null);
+                  } else {
+                    continue;
+                  }
+                  worklist.push(element);
+                }
+              } else if (isNode(candidate)) {
+                worklist.push(new Element(candidate, key, null, null));
+              }
+            }
+          }
+        }
+      };
+      Controller.prototype.replace = function replace(root, visitor) {
+        function removeElem(element) {
+          var i, key, nextElem, parent;
+          if (element.ref.remove()) {
+            key = element.ref.key;
+            parent = element.ref.parent;
+            i = worklist.length;
+            while (i--) {
+              nextElem = worklist[i];
+              if (nextElem.ref && nextElem.ref.parent === parent) {
+                if (nextElem.ref.key < key) {
+                  break;
+                }
+                --nextElem.ref.key;
+              }
+            }
+          }
+        }
+        var worklist, leavelist, node, nodeType, target, element, current, current2, candidates, candidate, sentinel, outer, key;
+        this.__initialize(root, visitor);
+        sentinel = {};
+        worklist = this.__worklist;
+        leavelist = this.__leavelist;
+        outer = { root: root };
+        element = new Element(root, null, null, new Reference(outer, 'root'));
+        worklist.push(element);
+        leavelist.push(element);
+        while (worklist.length) {
+          element = worklist.pop();
+          if (element === sentinel) {
+            element = leavelist.pop();
+            target = this.__execute(visitor.leave, element);
+            if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
+              element.ref.replace(target);
+            }
+            if (this.__state === REMOVE || target === REMOVE) {
+              removeElem(element);
+            }
+            if (this.__state === BREAK || target === BREAK) {
+              return outer.root;
+            }
+            continue;
+          }
+          target = this.__execute(visitor.enter, element);
+          if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
+            element.ref.replace(target);
+            element.node = target;
+          }
+          if (this.__state === REMOVE || target === REMOVE) {
+            removeElem(element);
+            element.node = null;
+          }
+          if (this.__state === BREAK || target === BREAK) {
+            return outer.root;
+          }
+          node = element.node;
+          if (!node) {
+            continue;
+          }
+          worklist.push(sentinel);
+          leavelist.push(element);
+          if (this.__state === SKIP || target === SKIP) {
+            continue;
+          }
+          nodeType = element.wrap || node.type;
+          candidates = this.__keys[nodeType];
+          if (!candidates) {
+            if (this.__fallback) {
+              candidates = objectKeys(node);
+            } else {
+              throw new Error('Unknown node type ' + nodeType + '.');
+            }
+          }
+          current = candidates.length;
+          while ((current -= 1) >= 0) {
+            key = candidates[current];
+            candidate = node[key];
+            if (!candidate) {
+              continue;
+            }
+            if (isArray(candidate)) {
+              current2 = candidate.length;
+              while ((current2 -= 1) >= 0) {
+                if (!candidate[current2]) {
+                  continue;
+                }
+                if (isProperty(nodeType, candidates[current])) {
+                  element = new Element(candidate[current2], [
+                    key,
+                    current2
+                  ], 'Property', new Reference(candidate, current2));
+                } else if (isNode(candidate[current2])) {
+                  element = new Element(candidate[current2], [
+                    key,
+                    current2
+                  ], null, new Reference(candidate, current2));
+                } else {
+                  continue;
+                }
+                worklist.push(element);
+              }
+            } else if (isNode(candidate)) {
+              worklist.push(new Element(candidate, key, null, new Reference(node, key)));
+            }
+          }
+        }
+        return outer.root;
+      };
+      function traverse(root, visitor) {
+        var controller = new Controller;
+        return controller.traverse(root, visitor);
+      }
+      function replace(root, visitor) {
+        var controller = new Controller;
+        return controller.replace(root, visitor);
+      }
+      function extendCommentRange(comment, tokens) {
+        var target;
+        target = upperBound(tokens, function search(token) {
+          return token.range[0] > comment.range[0];
+        });
+        comment.extendedRange = [
+          comment.range[0],
+          comment.range[1]
+        ];
+        if (target !== tokens.length) {
+          comment.extendedRange[1] = tokens[target].range[0];
+        }
+        target -= 1;
+        if (target >= 0) {
+          comment.extendedRange[0] = tokens[target].range[1];
+        }
+        return comment;
+      }
+      function attachComments(tree, providedComments, tokens) {
+        var comments = [], comment, len, i, cursor;
+        if (!tree.range) {
+          throw new Error('attachComments needs range information');
+        }
+        if (!tokens.length) {
+          if (providedComments.length) {
+            for (i = 0, len = providedComments.length; i < len; i += 1) {
+              comment = deepCopy(providedComments[i]);
+              comment.extendedRange = [
+                0,
+                tree.range[0]
+              ];
+              comments.push(comment);
+            }
+            tree.leadingComments = comments;
+          }
+          return tree;
+        }
+        for (i = 0, len = providedComments.length; i < len; i += 1) {
+          comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
+        }
+        cursor = 0;
+        traverse(tree, {
+          enter: function (node) {
+            var comment;
+            while (cursor < comments.length) {
+              comment = comments[cursor];
+              if (comment.extendedRange[1] > node.range[0]) {
+                break;
+              }
+              if (comment.extendedRange[1] === node.range[0]) {
+                if (!node.leadingComments) {
+                  node.leadingComments = [];
+                }
+                node.leadingComments.push(comment);
+                comments.splice(cursor, 1);
+              } else {
+                cursor += 1;
+              }
+            }
+            if (cursor === comments.length) {
+              return VisitorOption.Break;
+            }
+            if (comments[cursor].extendedRange[0] > node.range[1]) {
+              return VisitorOption.Skip;
+            }
+          }
+        });
+        cursor = 0;
+        traverse(tree, {
+          leave: function (node) {
+            var comment;
+            while (cursor < comments.length) {
+              comment = comments[cursor];
+              if (node.range[1] < comment.extendedRange[0]) {
+                break;
+              }
+              if (node.range[1] === comment.extendedRange[0]) {
+                if (!node.trailingComments) {
+                  node.trailingComments = [];
+                }
+                node.trailingComments.push(comment);
+                comments.splice(cursor, 1);
+              } else {
+                cursor += 1;
+              }
+            }
+            if (cursor === comments.length) {
+              return VisitorOption.Break;
+            }
+            if (comments[cursor].extendedRange[0] > node.range[1]) {
+              return VisitorOption.Skip;
+            }
+          }
+        });
+        return tree;
+      }
+      exports.version = '1.8.1-dev';
+      exports.Syntax = Syntax;
+      exports.traverse = traverse;
+      exports.replace = replace;
+      exports.attachComments = attachComments;
+      exports.VisitorKeys = VisitorKeys;
+      exports.VisitorOption = VisitorOption;
+      exports.Controller = Controller;
+      exports.cloneEnvironment = function () {
+        return clone({});
+      };
+      return exports;
+    }));
+  });
+  require('/tools/entry-point.js');
+}.call(this, this));
diff --git a/tooling/talertest/selenium/esprima.js b/tooling/talertest/selenium/esprima.js
new file mode 100644
index 000000000..d95f56eba
--- /dev/null
+++ b/tooling/talertest/selenium/esprima.js
@@ -0,0 +1,6605 @@
+(function webpackUniversalModuleDefinition(root, factory) {
+/* istanbul ignore next */
+	if(typeof exports === 'object' && typeof module === 'object')
+		module.exports = factory();
+	else if(typeof define === 'function' && define.amd)
+		define([], factory);
+/* istanbul ignore next */
+	else if(typeof exports === 'object')
+		exports["esprima"] = factory();
+	else
+		root["esprima"] = factory();
+})(this, function() {
+return /******/ (function(modules) { // webpackBootstrap
+/******/ 	// The module cache
+/******/ 	var installedModules = {};
+
+/******/ 	// The require function
+/******/ 	function __webpack_require__(moduleId) {
+
+/******/ 		// Check if module is in cache
+/* istanbul ignore if */
+/******/ 		if(installedModules[moduleId])
+/******/ 			return installedModules[moduleId].exports;
+
+/******/ 		// Create a new module (and put it into the cache)
+/******/ 		var module = installedModules[moduleId] = {
+/******/ 			exports: {},
+/******/ 			id: moduleId,
+/******/ 			loaded: false
+/******/ 		};
+
+/******/ 		// Execute the module function
+/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
+
+/******/ 		// Flag the module as loaded
+/******/ 		module.loaded = true;
+
+/******/ 		// Return the exports of the module
+/******/ 		return module.exports;
+/******/ 	}
+
+
+/******/ 	// expose the modules object (__webpack_modules__)
+/******/ 	__webpack_require__.m = modules;
+
+/******/ 	// expose the module cache
+/******/ 	__webpack_require__.c = installedModules;
+
+/******/ 	// __webpack_public_path__
+/******/ 	__webpack_require__.p = "";
+
+/******/ 	// Load entry module and return exports
+/******/ 	return __webpack_require__(0);
+/******/ })
+/************************************************************************/
+/******/ ([
+/* 0 */
+/***/ function(module, exports, __webpack_require__) {
+
+	/*
+	  Copyright JS Foundation and other contributors, https://js.foundation/
+
+	  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 HOLDERS AND CONTRIBUTORS "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 <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 comment_handler_1 = __webpack_require__(1);
+	var parser_1 = __webpack_require__(3);
+	var jsx_parser_1 = __webpack_require__(11);
+	var tokenizer_1 = __webpack_require__(15);
+	function parse(code, options, delegate) {
+	    var commentHandler = null;
+	    var proxyDelegate = function (node, metadata) {
+	        if (delegate) {
+	            delegate(node, metadata);
+	        }
+	        if (commentHandler) {
+	            commentHandler.visit(node, metadata);
+	        }
+	    };
+	    var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null;
+	    var collectComment = false;
+	    if (options) {
+	        collectComment = (typeof options.comment === 'boolean' && options.comment);
+	        var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment);
+	        if (collectComment || attachComment) {
+	            commentHandler = new comment_handler_1.CommentHandler();
+	            commentHandler.attach = attachComment;
+	            options.comment = true;
+	            parserDelegate = proxyDelegate;
+	        }
+	    }
+	    var isModule = false;
+	    if (options && typeof options.sourceType === 'string') {
+	        isModule = (options.sourceType === 'module');
+	    }
+	    var parser;
+	    if (options && typeof options.jsx === 'boolean' && options.jsx) {
+	        parser = new jsx_parser_1.JSXParser(code, options, parserDelegate);
+	    }
+	    else {
+	        parser = new parser_1.Parser(code, options, parserDelegate);
+	    }
+	    var program = isModule ? parser.parseModule() : parser.parseScript();
+	    var ast = (program);
+	    if (collectComment && commentHandler) {
+	        ast.comments = commentHandler.comments;
+	    }
+	    if (parser.config.tokens) {
+	        ast.tokens = parser.tokens;
+	    }
+	    if (parser.config.tolerant) {
+	        ast.errors = parser.errorHandler.errors;
+	    }
+	    return ast;
+	}
+	exports.parse = parse;
+	function parseModule(code, options, delegate) {
+	    var parsingOptions = options || {};
+	    parsingOptions.sourceType = 'module';
+	    return parse(code, parsingOptions, delegate);
+	}
+	exports.parseModule = parseModule;
+	function parseScript(code, options, delegate) {
+	    var parsingOptions = options || {};
+	    parsingOptions.sourceType = 'script';
+	    return parse(code, parsingOptions, delegate);
+	}
+	exports.parseScript = parseScript;
+	function tokenize(code, options, delegate) {
+	    var tokenizer = new tokenizer_1.Tokenizer(code, options);
+	    var tokens;
+	    tokens = [];
+	    try {
+	        while (true) {
+	            var token = tokenizer.getNextToken();
+	            if (!token) {
+	                break;
+	            }
+	            if (delegate) {
+	                token = delegate(token);
+	            }
+	            tokens.push(token);
+	        }
+	    }
+	    catch (e) {
+	        tokenizer.errorHandler.tolerate(e);
+	    }
+	    if (tokenizer.errorHandler.tolerant) {
+	        tokens.errors = tokenizer.errors();
+	    }
+	    return tokens;
+	}
+	exports.tokenize = tokenize;
+	var syntax_1 = __webpack_require__(2);
+	exports.Syntax = syntax_1.Syntax;
+	// Sync with *.json manifests.
+	exports.version = '4.0.0-dev';
+
+
+/***/ },
+/* 1 */
+/***/ function(module, exports, __webpack_require__) {
+
+	"use strict";
+	var syntax_1 = __webpack_require__(2);
+	var CommentHandler = (function () {
+	    function CommentHandler() {
+	        this.attach = false;
+	        this.comments = [];
+	        this.stack = [];
+	        this.leading = [];
+	        this.trailing = [];
+	    }
+	    CommentHandler.prototype.insertInnerComments = function (node, metadata) {
+	        //  innnerComments for properties empty block
+	        //  `function a() {/** comments **\/}`
+	        if (node.type === syntax_1.Syntax.BlockStatement && node.body.length === 0) {
+	            var innerComments = [];
+	            for (var i = this.leading.length - 1; i >= 0; --i) {
+	                var entry = this.leading[i];
+	                if (metadata.end.offset >= entry.start) {
+	                    innerComments.unshift(entry.comment);
+	                    this.leading.splice(i, 1);
+	                    this.trailing.splice(i, 1);
+	                }
+	            }
+	            if (innerComments.length) {
+	                node.innerComments = innerComments;
+	            }
+	        }
+	    };
+	    CommentHandler.prototype.findTrailingComments = function (metadata) {
+	        var trailingComments = [];
+	        if (this.trailing.length > 0) {
+	            for (var i = this.trailing.length - 1; i >= 0; --i) {
+	                var entry_1 = this.trailing[i];
+	                if (entry_1.start >= metadata.end.offset) {
+	                    trailingComments.unshift(entry_1.comment);
+	                }
+	            }
+	            this.trailing.length = 0;
+	            return trailingComments;
+	        }
+	        var entry = this.stack[this.stack.length - 1];
+	        if (entry && entry.node.trailingComments) {
+	            var firstComment = entry.node.trailingComments[0];
+	            if (firstComment && firstComment.range[0] >= metadata.end.offset) {
+	                trailingComments = entry.node.trailingComments;
+	                delete entry.node.trailingComments;
+	            }
+	        }
+	        return trailingComments;
+	    };
+	    CommentHandler.prototype.findLeadingComments = function (metadata) {
+	        var leadingComments = [];
+	        var target;
+	        while (this.stack.length > 0) {
+	            var entry = this.stack[this.stack.length - 1];
+	            if (entry && entry.start >= metadata.start.offset) {
+	                target = entry.node;
+	                this.stack.pop();
+	            }
+	            else {
+	                break;
+	            }
+	        }
+	        if (target) {
+	            var count = target.leadingComments ? target.leadingComments.length : 0;
+	            for (var i = count - 1; i >= 0; --i) {
+	                var comment = target.leadingComments[i];
+	                if (comment.range[1] <= metadata.start.offset) {
+	                    leadingComments.unshift(comment);
+	                    target.leadingComments.splice(i, 1);
+	                }
+	            }
+	            if (target.leadingComments && target.leadingComments.length === 0) {
+	                delete target.leadingComments;
+	            }
+	            return leadingComments;
+	        }
+	        for (var i = this.leading.length - 1; i >= 0; --i) {
+	            var entry = this.leading[i];
+	            if (entry.start <= metadata.start.offset) {
+	                leadingComments.unshift(entry.comment);
+	                this.leading.splice(i, 1);
+	            }
+	        }
+	        return leadingComments;
+	    };
+	    CommentHandler.prototype.visitNode = function (node, metadata) {
+	        if (node.type === syntax_1.Syntax.Program && node.body.length > 0) {
+	            return;
+	        }
+	        this.insertInnerComments(node, metadata);
+	        var trailingComments = this.findTrailingComments(metadata);
+	        var leadingComments = this.findLeadingComments(metadata);
+	        if (leadingComments.length > 0) {
+	            node.leadingComments = leadingComments;
+	        }
+	        if (trailingComments.length > 0) {
+	            node.trailingComments = trailingComments;
+	        }
+	        this.stack.push({
+	            node: node,
+	            start: metadata.start.offset
+	        });
+	    };
+	    CommentHandler.prototype.visitComment = function (node, metadata) {
+	        var type = (node.type[0] === 'L') ? 'Line' : 'Block';
+	        var comment = {
+	            type: type,
+	            value: node.value
+	        };
+	        if (node.range) {
+	            comment.range = node.range;
+	        }
+	        if (node.loc) {
+	            comment.loc = node.loc;
+	        }
+	        this.comments.push(comment);
+	        if (this.attach) {
+	            var entry = {
+	                comment: {
+	                    type: type,
+	                    value: node.value,
+	                    range: [metadata.start.offset, metadata.end.offset]
+	                },
+	                start: metadata.start.offset
+	            };
+	            if (node.loc) {
+	                entry.comment.loc = node.loc;
+	            }
+	            node.type = type;
+	            this.leading.push(entry);
+	            this.trailing.push(entry);
+	        }
+	    };
+	    CommentHandler.prototype.visit = function (node, metadata) {
+	        if (node.type === 'LineComment') {
+	            this.visitComment(node, metadata);
+	        }
+	        else if (node.type === 'BlockComment') {
+	            this.visitComment(node, metadata);
+	        }
+	        else if (this.attach) {
+	            this.visitNode(node, metadata);
+	        }
+	    };
+	    return CommentHandler;
+	}());
+	exports.CommentHandler = CommentHandler;
+
+
+/***/ },
+/* 2 */
+/***/ function(module, exports) {
+
+	"use strict";
+	exports.Syntax = {
+	    AssignmentExpression: 'AssignmentExpression',
+	    AssignmentPattern: 'AssignmentPattern',
+	    ArrayExpression: 'ArrayExpression',
+	    ArrayPattern: 'ArrayPattern',
+	    ArrowFunctionExpression: 'ArrowFunctionExpression',
+	    AwaitExpression: 'AwaitExpression',
+	    BlockStatement: 'BlockStatement',
+	    BinaryExpression: 'BinaryExpression',
+	    BreakStatement: 'BreakStatement',
+	    CallExpression: 'CallExpression',
+	    CatchClause: 'CatchClause',
+	    ClassBody: 'ClassBody',
+	    ClassDeclaration: 'ClassDeclaration',
+	    ClassExpression: 'ClassExpression',
+	    ConditionalExpression: 'ConditionalExpression',
+	    ContinueStatement: 'ContinueStatement',
+	    DoWhileStatement: 'DoWhileStatement',
+	    DebuggerStatement: 'DebuggerStatement',
+	    EmptyStatement: 'EmptyStatement',
+	    ExportAllDeclaration: 'ExportAllDeclaration',
+	    ExportDefaultDeclaration: 'ExportDefaultDeclaration',
+	    ExportNamedDeclaration: 'ExportNamedDeclaration',
+	    ExportSpecifier: 'ExportSpecifier',
+	    ExpressionStatement: 'ExpressionStatement',
+	    ForStatement: 'ForStatement',
+	    ForOfStatement: 'ForOfStatement',
+	    ForInStatement: 'ForInStatement',
+	    FunctionDeclaration: 'FunctionDeclaration',
+	    FunctionExpression: 'FunctionExpression',
+	    Identifier: 'Identifier',
+	    IfStatement: 'IfStatement',
+	    ImportDeclaration: 'ImportDeclaration',
+	    ImportDefaultSpecifier: 'ImportDefaultSpecifier',
+	    ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
+	    ImportSpecifier: 'ImportSpecifier',
+	    Literal: 'Literal',
+	    LabeledStatement: 'LabeledStatement',
+	    LogicalExpression: 'LogicalExpression',
+	    MemberExpression: 'MemberExpression',
+	    MetaProperty: 'MetaProperty',
+	    MethodDefinition: 'MethodDefinition',
+	    NewExpression: 'NewExpression',
+	    ObjectExpression: 'ObjectExpression',
+	    ObjectPattern: 'ObjectPattern',
+	    Program: 'Program',
+	    Property: 'Property',
+	    RestElement: 'RestElement',
+	    ReturnStatement: 'ReturnStatement',
+	    SequenceExpression: 'SequenceExpression',
+	    SpreadElement: 'SpreadElement',
+	    Super: 'Super',
+	    SwitchCase: 'SwitchCase',
+	    SwitchStatement: 'SwitchStatement',
+	    TaggedTemplateExpression: 'TaggedTemplateExpression',
+	    TemplateElement: 'TemplateElement',
+	    TemplateLiteral: 'TemplateLiteral',
+	    ThisExpression: 'ThisExpression',
+	    ThrowStatement: 'ThrowStatement',
+	    TryStatement: 'TryStatement',
+	    UnaryExpression: 'UnaryExpression',
+	    UpdateExpression: 'UpdateExpression',
+	    VariableDeclaration: 'VariableDeclaration',
+	    VariableDeclarator: 'VariableDeclarator',
+	    WhileStatement: 'WhileStatement',
+	    WithStatement: 'WithStatement',
+	    YieldExpression: 'YieldExpression'
+	};
+
+
+/***/ },
+/* 3 */
+/***/ function(module, exports, __webpack_require__) {
+
+	"use strict";
+	var assert_1 = __webpack_require__(4);
+	var messages_1 = __webpack_require__(5);
+	var error_handler_1 = __webpack_require__(6);
+	var token_1 = __webpack_require__(7);
+	var scanner_1 = __webpack_require__(8);
+	var syntax_1 = __webpack_require__(2);
+	var Node = __webpack_require__(10);
+	var ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder';
+	var Parser = (function () {
+	    function Parser(code, options, delegate) {
+	        if (options === void 0) { options = {}; }
+	        this.config = {
+	            range: (typeof options.range === 'boolean') && options.range,
+	            loc: (typeof options.loc === 'boolean') && options.loc,
+	            source: null,
+	            tokens: (typeof options.tokens === 'boolean') && options.tokens,
+	            comment: (typeof options.comment === 'boolean') && options.comment,
+	            tolerant: (typeof options.tolerant === 'boolean') && options.tolerant
+	        };
+	        if (this.config.loc && options.source && options.source !== null) {
+	            this.config.source = String(options.source);
+	        }
+	        this.delegate = delegate;
+	        this.errorHandler = new error_handler_1.ErrorHandler();
+	        this.errorHandler.tolerant = this.config.tolerant;
+	        this.scanner = new scanner_1.Scanner(code, this.errorHandler);
+	        this.scanner.trackComment = this.config.comment;
+	        this.operatorPrecedence = {
+	            ')': 0,
+	            ';': 0,
+	            ',': 0,
+	            '=': 0,
+	            ']': 0,
+	            '||': 1,
+	            '&&': 2,
+	            '|': 3,
+	            '^': 4,
+	            '&': 5,
+	            '==': 6,
+	            '!=': 6,
+	            '===': 6,
+	            '!==': 6,
+	            '<': 7,
+	            '>': 7,
+	            '<=': 7,
+	            '>=': 7,
+	            '<<': 8,
+	            '>>': 8,
+	            '>>>': 8,
+	            '+': 9,
+	            '-': 9,
+	            '*': 11,
+	            '/': 11,
+	            '%': 11
+	        };
+	        this.lookahead = null;
+	        this.hasLineTerminator = false;
+	        this.context = {
+	            isModule: false,
+	            await: false,
+	            allowIn: true,
+	            allowYield: true,
+	            firstCoverInitializedNameError: null,
+	            isAssignmentTarget: false,
+	            isBindingElement: false,
+	            inFunctionBody: false,
+	            inIteration: false,
+	            inSwitch: false,
+	            labelSet: {},
+	            strict: false
+	        };
+	        this.tokens = [];
+	        this.startMarker = {
+	            index: 0,
+	            lineNumber: this.scanner.lineNumber,
+	            lineStart: 0
+	        };
+	        this.lastMarker = {
+	            index: 0,
+	            lineNumber: this.scanner.lineNumber,
+	            lineStart: 0
+	        };
+	        this.nextToken();
+	        this.lastMarker = {
+	            index: this.scanner.index,
+	            lineNumber: this.scanner.lineNumber,
+	            lineStart: this.scanner.lineStart
+	        };
+	    }
+	    Parser.prototype.throwError = function (messageFormat) {
+	        var values = [];
+	        for (var _i = 1; _i < arguments.length; _i++) {
+	            values[_i - 1] = arguments[_i];
+	        }
+	        var args = Array.prototype.slice.call(arguments, 1);
+	        var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) {
+	            assert_1.assert(idx < args.length, 'Message reference must be in range');
+	            return args[idx];
+	        });
+	        var index = this.lastMarker.index;
+	        var line = this.lastMarker.lineNumber;
+	        var column = this.lastMarker.index - this.lastMarker.lineStart + 1;
+	        throw this.errorHandler.createError(index, line, column, msg);
+	    };
+	    Parser.prototype.tolerateError = function (messageFormat) {
+	        var values = [];
+	        for (var _i = 1; _i < arguments.length; _i++) {
+	            values[_i - 1] = arguments[_i];
+	        }
+	        var args = Array.prototype.slice.call(arguments, 1);
+	        var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) {
+	            assert_1.assert(idx < args.length, 'Message reference must be in range');
+	            return args[idx];
+	        });
+	        var index = this.lastMarker.index;
+	        var line = this.scanner.lineNumber;
+	        var column = this.lastMarker.index - this.lastMarker.lineStart + 1;
+	        this.errorHandler.tolerateError(index, line, column, msg);
+	    };
+	    // Throw an exception because of the token.
+	    Parser.prototype.unexpectedTokenError = function (token, message) {
+	        var msg = message || messages_1.Messages.UnexpectedToken;
+	        var value;
+	        if (token) {
+	            if (!message) {
+	                msg = (token.type === token_1.Token.EOF) ? messages_1.Messages.UnexpectedEOS :
+	                    (token.type === token_1.Token.Identifier) ? messages_1.Messages.UnexpectedIdentifier :
+	                        (token.type === token_1.Token.NumericLiteral) ? messages_1.Messages.UnexpectedNumber :
+	                            (token.type === token_1.Token.StringLiteral) ? messages_1.Messages.UnexpectedString :
+	                                (token.type === token_1.Token.Template) ? messages_1.Messages.UnexpectedTemplate :
+	                                    messages_1.Messages.UnexpectedToken;
+	                if (token.type === token_1.Token.Keyword) {
+	                    if (this.scanner.isFutureReservedWord(token.value)) {
+	                        msg = messages_1.Messages.UnexpectedReserved;
+	                    }
+	                    else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) {
+	                        msg = messages_1.Messages.StrictReservedWord;
+	                    }
+	                }
+	            }
+	            value = (token.type === token_1.Token.Template) ? token.value.raw : token.value;
+	        }
+	        else {
+	            value = 'ILLEGAL';
+	        }
+	        msg = msg.replace('%0', value);
+	        if (token && typeof token.lineNumber === 'number') {
+	            var index = token.start;
+	            var line = token.lineNumber;
+	            var column = token.start - this.lastMarker.lineStart + 1;
+	            return this.errorHandler.createError(index, line, column, msg);
+	        }
+	        else {
+	            var index = this.lastMarker.index;
+	            var line = this.lastMarker.lineNumber;
+	            var column = index - this.lastMarker.lineStart + 1;
+	            return this.errorHandler.createError(index, line, column, msg);
+	        }
+	    };
+	    Parser.prototype.throwUnexpectedToken = function (token, message) {
+	        throw this.unexpectedTokenError(token, message);
+	    };
+	    Parser.prototype.tolerateUnexpectedToken = function (token, message) {
+	        this.errorHandler.tolerate(this.unexpectedTokenError(token, message));
+	    };
+	    Parser.prototype.collectComments = function () {
+	        if (!this.config.comment) {
+	            this.scanner.scanComments();
+	        }
+	        else {
+	            var comments = this.scanner.scanComments();
+	            if (comments.length > 0 && this.delegate) {
+	                for (var i = 0; i < comments.length; ++i) {
+	                    var e = comments[i];
+	                    var node = void 0;
+	                    node = {
+	                        type: e.multiLine ? 'BlockComment' : 'LineComment',
+	                        value: this.scanner.source.slice(e.slice[0], e.slice[1])
+	                    };
+	                    if (this.config.range) {
+	                        node.range = e.range;
+	                    }
+	                    if (this.config.loc) {
+	                        node.loc = e.loc;
+	                    }
+	                    var metadata = {
+	                        start: {
+	                            line: e.loc.start.line,
+	                            column: e.loc.start.column,
+	                            offset: e.range[0]
+	                        },
+	                        end: {
+	                            line: e.loc.end.line,
+	                            column: e.loc.end.column,
+	                            offset: e.range[1]
+	                        }
+	                    };
+	                    this.delegate(node, metadata);
+	                }
+	            }
+	        }
+	    };
+	    // From internal representation to an external structure
+	    Parser.prototype.getTokenRaw = function (token) {
+	        return this.scanner.source.slice(token.start, token.end);
+	    };
+	    Parser.prototype.convertToken = function (token) {
+	        var t;
+	        t = {
+	            type: token_1.TokenName[token.type],
+	            value: this.getTokenRaw(token)
+	        };
+	        if (this.config.range) {
+	            t.range = [token.start, token.end];
+	        }
+	        if (this.config.loc) {
+	            t.loc = {
+	                start: {
+	                    line: this.startMarker.lineNumber,
+	                    column: this.startMarker.index - this.startMarker.lineStart
+	                },
+	                end: {
+	                    line: this.scanner.lineNumber,
+	                    column: this.scanner.index - this.scanner.lineStart
+	                }
+	            };
+	        }
+	        if (token.regex) {
+	            t.regex = token.regex;
+	        }
+	        return t;
+	    };
+	    Parser.prototype.nextToken = function () {
+	        var token = this.lookahead;
+	        this.lastMarker.index = this.scanner.index;
+	        this.lastMarker.lineNumber = this.scanner.lineNumber;
+	        this.lastMarker.lineStart = this.scanner.lineStart;
+	        this.collectComments();
+	        this.startMarker.index = this.scanner.index;
+	        this.startMarker.lineNumber = this.scanner.lineNumber;
+	        this.startMarker.lineStart = this.scanner.lineStart;
+	        var next;
+	        next = this.scanner.lex();
+	        this.hasLineTerminator = (token && next) ? (token.lineNumber !== next.lineNumber) : false;
+	        if (next && this.context.strict && next.type === token_1.Token.Identifier) {
+	            if (this.scanner.isStrictModeReservedWord(next.value)) {
+	                next.type = token_1.Token.Keyword;
+	            }
+	        }
+	        this.lookahead = next;
+	        if (this.config.tokens && next.type !== token_1.Token.EOF) {
+	            this.tokens.push(this.convertToken(next));
+	        }
+	        return token;
+	    };
+	    Parser.prototype.nextRegexToken = function () {
+	        this.collectComments();
+	        var token = this.scanner.scanRegExp();
+	        if (this.config.tokens) {
+	            // Pop the previous token, '/' or '/='
+	            // This is added from the lookahead token.
+	            this.tokens.pop();
+	            this.tokens.push(this.convertToken(token));
+	        }
+	        // Prime the next lookahead.
+	        this.lookahead = token;
+	        this.nextToken();
+	        return token;
+	    };
+	    Parser.prototype.createNode = function () {
+	        return {
+	            index: this.startMarker.index,
+	            line: this.startMarker.lineNumber,
+	            column: this.startMarker.index - this.startMarker.lineStart
+	        };
+	    };
+	    Parser.prototype.startNode = function (token) {
+	        return {
+	            index: token.start,
+	            line: token.lineNumber,
+	            column: token.start - token.lineStart
+	        };
+	    };
+	    Parser.prototype.finalize = function (meta, node) {
+	        if (this.config.range) {
+	            node.range = [meta.index, this.lastMarker.index];
+	        }
+	        if (this.config.loc) {
+	            node.loc = {
+	                start: {
+	                    line: meta.line,
+	                    column: meta.column
+	                },
+	                end: {
+	                    line: this.lastMarker.lineNumber,
+	                    column: this.lastMarker.index - this.lastMarker.lineStart
+	                }
+	            };
+	            if (this.config.source) {
+	                node.loc.source = this.config.source;
+	            }
+	        }
+	        if (this.delegate) {
+	            var metadata = {
+	                start: {
+	                    line: meta.line,
+	                    column: meta.column,
+	                    offset: meta.index
+	                },
+	                end: {
+	                    line: this.lastMarker.lineNumber,
+	                    column: this.lastMarker.index - this.lastMarker.lineStart,
+	                    offset: this.lastMarker.index
+	                }
+	            };
+	            this.delegate(node, metadata);
+	        }
+	        return node;
+	    };
+	    // Expect the next token to match the specified punctuator.
+	    // If not, an exception will be thrown.
+	    Parser.prototype.expect = function (value) {
+	        var token = this.nextToken();
+	        if (token.type !== token_1.Token.Punctuator || token.value !== value) {
+	            this.throwUnexpectedToken(token);
+	        }
+	    };
+	    // Quietly expect a comma when in tolerant mode, otherwise delegates to expect().
+	    Parser.prototype.expectCommaSeparator = function () {
+	        if (this.config.tolerant) {
+	            var token = this.lookahead;
+	            if (token.type === token_1.Token.Punctuator && token.value === ',') {
+	                this.nextToken();
+	            }
+	            else if (token.type === token_1.Token.Punctuator && token.value === ';') {
+	                this.nextToken();
+	                this.tolerateUnexpectedToken(token);
+	            }
+	            else {
+	                this.tolerateUnexpectedToken(token, messages_1.Messages.UnexpectedToken);
+	            }
+	        }
+	        else {
+	            this.expect(',');
+	        }
+	    };
+	    // Expect the next token to match the specified keyword.
+	    // If not, an exception will be thrown.
+	    Parser.prototype.expectKeyword = function (keyword) {
+	        var token = this.nextToken();
+	        if (token.type !== token_1.Token.Keyword || token.value !== keyword) {
+	            this.throwUnexpectedToken(token);
+	        }
+	    };
+	    // Return true if the next token matches the specified punctuator.
+	    Parser.prototype.match = function (value) {
+	        return this.lookahead.type === token_1.Token.Punctuator && this.lookahead.value === value;
+	    };
+	    // Return true if the next token matches the specified keyword
+	    Parser.prototype.matchKeyword = function (keyword) {
+	        return this.lookahead.type === token_1.Token.Keyword && this.lookahead.value === keyword;
+	    };
+	    // Return true if the next token matches the specified contextual keyword
+	    // (where an identifier is sometimes a keyword depending on the context)
+	    Parser.prototype.matchContextualKeyword = function (keyword) {
+	        return this.lookahead.type === token_1.Token.Identifier && this.lookahead.value === keyword;
+	    };
+	    // Return true if the next token is an assignment operator
+	    Parser.prototype.matchAssign = function () {
+	        if (this.lookahead.type !== token_1.Token.Punctuator) {
+	            return false;
+	        }
+	        var op = this.lookahead.value;
+	        return op === '=' ||
+	            op === '*=' ||
+	            op === '**=' ||
+	            op === '/=' ||
+	            op === '%=' ||
+	            op === '+=' ||
+	            op === '-=' ||
+	            op === '<<=' ||
+	            op === '>>=' ||
+	            op === '>>>=' ||
+	            op === '&=' ||
+	            op === '^=' ||
+	            op === '|=';
+	    };
+	    // Cover grammar support.
+	    //
+	    // When an assignment expression position starts with an left parenthesis, the determination of the type
+	    // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead)
+	    // or the first comma. This situation also defers the determination of all the expressions nested in the pair.
+	    //
+	    // There are three productions that can be parsed in a parentheses pair that needs to be determined
+	    // after the outermost pair is closed. They are:
+	    //
+	    //   1. AssignmentExpression
+	    //   2. BindingElements
+	    //   3. AssignmentTargets
+	    //
+	    // In order to avoid exponential backtracking, we use two flags to denote if the production can be
+	    // binding element or assignment target.
+	    //
+	    // The three productions have the relationship:
+	    //
+	    //   BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression
+	    //
+	    // with a single exception that CoverInitializedName when used directly in an Expression, generates
+	    // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the
+	    // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair.
+	    //
+	    // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not
+	    // effect the current flags. This means the production the parser parses is only used as an expression. Therefore
+	    // the CoverInitializedName check is conducted.
+	    //
+	    // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates
+	    // the flags outside of the parser. This means the production the parser parses is used as a part of a potential
+	    // pattern. The CoverInitializedName check is deferred.
+	    Parser.prototype.isolateCoverGrammar = function (parseFunction) {
+	        var previousIsBindingElement = this.context.isBindingElement;
+	        var previousIsAssignmentTarget = this.context.isAssignmentTarget;
+	        var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;
+	        this.context.isBindingElement = true;
+	        this.context.isAssignmentTarget = true;
+	        this.context.firstCoverInitializedNameError = null;
+	        var result = parseFunction.call(this);
+	        if (this.context.firstCoverInitializedNameError !== null) {
+	            this.throwUnexpectedToken(this.context.firstCoverInitializedNameError);
+	        }
+	        this.context.isBindingElement = previousIsBindingElement;
+	        this.context.isAssignmentTarget = previousIsAssignmentTarget;
+	        this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError;
+	        return result;
+	    };
+	    Parser.prototype.inheritCoverGrammar = function (parseFunction) {
+	        var previousIsBindingElement = this.context.isBindingElement;
+	        var previousIsAssignmentTarget = this.context.isAssignmentTarget;
+	        var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;
+	        this.context.isBindingElement = true;
+	        this.context.isAssignmentTarget = true;
+	        this.context.firstCoverInitializedNameError = null;
+	        var result = parseFunction.call(this);
+	        this.context.isBindingElement = this.context.isBindingElement && previousIsBindingElement;
+	        this.context.isAssignmentTarget = this.context.isAssignmentTarget && previousIsAssignmentTarget;
+	        this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError || this.context.firstCoverInitializedNameError;
+	        return result;
+	    };
+	    Parser.prototype.consumeSemicolon = function () {
+	        if (this.match(';')) {
+	            this.nextToken();
+	        }
+	        else if (!this.hasLineTerminator) {
+	            if (this.lookahead.type !== token_1.Token.EOF && !this.match('}')) {
+	                this.throwUnexpectedToken(this.lookahead);
+	            }
+	            this.lastMarker.index = this.startMarker.index;
+	            this.lastMarker.lineNumber = this.startMarker.lineNumber;
+	            this.lastMarker.lineStart = this.startMarker.lineStart;
+	        }
+	    };
+	    // ECMA-262 12.2 Primary Expressions
+	    Parser.prototype.parsePrimaryExpression = function () {
+	        var node = this.createNode();
+	        var expr;
+	        var value, token, raw;
+	        switch (this.lookahead.type) {
+	            case token_1.Token.Identifier:
+	                if ((this.context.isModule || this.context.await) && this.lookahead.value === 'await') {
+	                    this.tolerateUnexpectedToken(this.lookahead);
+	                }
+	                expr = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(node, new Node.Identifier(this.nextToken().value));
+	                break;
+	            case token_1.Token.NumericLiteral:
+	            case token_1.Token.StringLiteral:
+	                if (this.context.strict && this.lookahead.octal) {
+	                    this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.StrictOctalLiteral);
+	                }
+	                this.context.isAssignmentTarget = false;
+	                this.context.isBindingElement = false;
+	                token = this.nextToken();
+	                raw = this.getTokenRaw(token);
+	                expr = this.finalize(node, new Node.Literal(token.value, raw));
+	                break;
+	            case token_1.Token.BooleanLiteral:
+	                this.context.isAssignmentTarget = false;
+	                this.context.isBindingElement = false;
+	                token = this.nextToken();
+	                token.value = (token.value === 'true');
+	                raw = this.getTokenRaw(token);
+	                expr = this.finalize(node, new Node.Literal(token.value, raw));
+	                break;
+	            case token_1.Token.NullLiteral:
+	                this.context.isAssignmentTarget = false;
+	                this.context.isBindingElement = false;
+	                token = this.nextToken();
+	                token.value = null;
+	                raw = this.getTokenRaw(token);
+	                expr = this.finalize(node, new Node.Literal(token.value, raw));
+	                break;
+	            case token_1.Token.Template:
+	                expr = this.parseTemplateLiteral();
+	                break;
+	            case token_1.Token.Punctuator:
+	                value = this.lookahead.value;
+	                switch (value) {
+	                    case '(':
+	                        this.context.isBindingElement = false;
+	                        expr = this.inheritCoverGrammar(this.parseGroupExpression);
+	                        break;
+	                    case '[':
+	                        expr = this.inheritCoverGrammar(this.parseArrayInitializer);
+	                        break;
+	                    case '{':
+	                        expr = this.inheritCoverGrammar(this.parseObjectInitializer);
+	                        break;
+	                    case '/':
+	                    case '/=':
+	                        this.context.isAssignmentTarget = false;
+	                        this.context.isBindingElement = false;
+	                        this.scanner.index = this.startMarker.index;
+	                        token = this.nextRegexToken();
+	                        raw = this.getTokenRaw(token);
+	                        expr = this.finalize(node, new Node.RegexLiteral(token.value, raw, token.regex));
+	                        break;
+	                    default:
+	                        expr = this.throwUnexpectedToken(this.nextToken());
+	                }
+	                break;
+	            case token_1.Token.Keyword:
+	                if (!this.context.strict && this.context.allowYield && this.matchKeyword('yield')) {
+	                    expr = this.parseIdentifierName();
+	                }
+	                else if (!this.context.strict && this.matchKeyword('let')) {
+	                    expr = this.finalize(node, new Node.Identifier(this.nextToken().value));
+	                }
+	                else {
+	                    this.context.isAssignmentTarget = false;
+	                    this.context.isBindingElement = false;
+	                    if (this.matchKeyword('function')) {
+	                        expr = this.parseFunctionExpression();
+	                    }
+	                    else if (this.matchKeyword('this')) {
+	                        this.nextToken();
+	                        expr = this.finalize(node, new Node.ThisExpression());
+	                    }
+	                    else if (this.matchKeyword('class')) {
+	                        expr = this.parseClassExpression();
+	                    }
+	                    else {
+	                        expr = this.throwUnexpectedToken(this.nextToken());
+	                    }
+	                }
+	                break;
+	            default:
+	                expr = this.throwUnexpectedToken(this.nextToken());
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.2.5 Array Initializer
+	    Parser.prototype.parseSpreadElement = function () {
+	        var node = this.createNode();
+	        this.expect('...');
+	        var arg = this.inheritCoverGrammar(this.parseAssignmentExpression);
+	        return this.finalize(node, new Node.SpreadElement(arg));
+	    };
+	    Parser.prototype.parseArrayInitializer = function () {
+	        var node = this.createNode();
+	        var elements = [];
+	        this.expect('[');
+	        while (!this.match(']')) {
+	            if (this.match(',')) {
+	                this.nextToken();
+	                elements.push(null);
+	            }
+	            else if (this.match('...')) {
+	                var element = this.parseSpreadElement();
+	                if (!this.match(']')) {
+	                    this.context.isAssignmentTarget = false;
+	                    this.context.isBindingElement = false;
+	                    this.expect(',');
+	                }
+	                elements.push(element);
+	            }
+	            else {
+	                elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression));
+	                if (!this.match(']')) {
+	                    this.expect(',');
+	                }
+	            }
+	        }
+	        this.expect(']');
+	        return this.finalize(node, new Node.ArrayExpression(elements));
+	    };
+	    // ECMA-262 12.2.6 Object Initializer
+	    Parser.prototype.parsePropertyMethod = function (params) {
+	        this.context.isAssignmentTarget = false;
+	        this.context.isBindingElement = false;
+	        var previousStrict = this.context.strict;
+	        var body = this.isolateCoverGrammar(this.parseFunctionSourceElements);
+	        if (this.context.strict && params.firstRestricted) {
+	            this.tolerateUnexpectedToken(params.firstRestricted, params.message);
+	        }
+	        if (this.context.strict && params.stricted) {
+	            this.tolerateUnexpectedToken(params.stricted, params.message);
+	        }
+	        this.context.strict = previousStrict;
+	        return body;
+	    };
+	    Parser.prototype.parsePropertyMethodFunction = function () {
+	        var isGenerator = false;
+	        var node = this.createNode();
+	        var previousAllowYield = this.context.allowYield;
+	        this.context.allowYield = false;
+	        var params = this.parseFormalParameters();
+	        var method = this.parsePropertyMethod(params);
+	        this.context.allowYield = previousAllowYield;
+	        return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));
+	    };
+	    Parser.prototype.parsePropertyMethodAsyncFunction = function () {
+	        var node = this.createNode();
+	        var previousAllowYield = this.context.allowYield;
+	        var previousAwait = this.context.await;
+	        this.context.allowYield = false;
+	        this.context.await = true;
+	        var params = this.parseFormalParameters();
+	        var method = this.parsePropertyMethod(params);
+	        this.context.allowYield = previousAllowYield;
+	        this.context.await = previousAwait;
+	        return this.finalize(node, new Node.AsyncFunctionExpression(null, params.params, method));
+	    };
+	    Parser.prototype.parseObjectPropertyKey = function () {
+	        var node = this.createNode();
+	        var token = this.nextToken();
+	        var key;
+	        switch (token.type) {
+	            case token_1.Token.StringLiteral:
+	            case token_1.Token.NumericLiteral:
+	                if (this.context.strict && token.octal) {
+	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictOctalLiteral);
+	                }
+	                var raw = this.getTokenRaw(token);
+	                key = this.finalize(node, new Node.Literal(token.value, raw));
+	                break;
+	            case token_1.Token.Identifier:
+	            case token_1.Token.BooleanLiteral:
+	            case token_1.Token.NullLiteral:
+	            case token_1.Token.Keyword:
+	                key = this.finalize(node, new Node.Identifier(token.value));
+	                break;
+	            case token_1.Token.Punctuator:
+	                if (token.value === '[') {
+	                    key = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	                    this.expect(']');
+	                }
+	                else {
+	                    key = this.throwUnexpectedToken(token);
+	                }
+	                break;
+	            default:
+	                key = this.throwUnexpectedToken(token);
+	        }
+	        return key;
+	    };
+	    Parser.prototype.isPropertyKey = function (key, value) {
+	        return (key.type === syntax_1.Syntax.Identifier && key.name === value) ||
+	            (key.type === syntax_1.Syntax.Literal && key.value === value);
+	    };
+	    Parser.prototype.parseObjectProperty = function (hasProto) {
+	        var node = this.createNode();
+	        var token = this.lookahead;
+	        var kind;
+	        var key = null;
+	        var value = null;
+	        var computed = false;
+	        var method = false;
+	        var shorthand = false;
+	        var isAsync = false;
+	        if (token.type === token_1.Token.Identifier) {
+	            var id = token.value;
+	            this.nextToken();
+	            if (id === 'async') {
+	                isAsync = !this.hasLineTerminator && (this.lookahead.type === token_1.Token.Identifier);
+	                if (isAsync) {
+	                    token = this.lookahead;
+	                    id = token.value;
+	                    this.nextToken();
+	                }
+	            }
+	            key = this.finalize(node, new Node.Identifier(id));
+	        }
+	        else if (this.match('*')) {
+	            this.nextToken();
+	        }
+	        else {
+	            computed = this.match('[');
+	            key = this.parseObjectPropertyKey();
+	        }
+	        var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);
+	        if (token.type === token_1.Token.Identifier && !isAsync && token.value === 'get' && lookaheadPropertyKey) {
+	            kind = 'get';
+	            computed = this.match('[');
+	            key = this.parseObjectPropertyKey();
+	            this.context.allowYield = false;
+	            value = this.parseGetterMethod();
+	        }
+	        else if (token.type === token_1.Token.Identifier && !isAsync && token.value === 'set' && lookaheadPropertyKey) {
+	            kind = 'set';
+	            computed = this.match('[');
+	            key = this.parseObjectPropertyKey();
+	            value = this.parseSetterMethod();
+	        }
+	        else if (token.type === token_1.Token.Punctuator && token.value === '*' && lookaheadPropertyKey) {
+	            kind = 'init';
+	            computed = this.match('[');
+	            key = this.parseObjectPropertyKey();
+	            value = this.parseGeneratorMethod();
+	            method = true;
+	        }
+	        else {
+	            if (!key) {
+	                this.throwUnexpectedToken(this.lookahead);
+	            }
+	            kind = 'init';
+	            if (this.match(':')) {
+	                if (!computed && this.isPropertyKey(key, '__proto__')) {
+	                    if (hasProto.value) {
+	                        this.tolerateError(messages_1.Messages.DuplicateProtoProperty);
+	                    }
+	                    hasProto.value = true;
+	                }
+	                this.nextToken();
+	                value = this.inheritCoverGrammar(this.parseAssignmentExpression);
+	            }
+	            else if (this.match('(')) {
+	                value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();
+	                method = true;
+	            }
+	            else if (token.type === token_1.Token.Identifier) {
+	                var id = this.finalize(node, new Node.Identifier(token.value));
+	                if (this.match('=')) {
+	                    this.context.firstCoverInitializedNameError = this.lookahead;
+	                    this.nextToken();
+	                    shorthand = true;
+	                    var init = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	                    value = this.finalize(node, new Node.AssignmentPattern(id, init));
+	                }
+	                else {
+	                    shorthand = true;
+	                    value = id;
+	                }
+	            }
+	            else {
+	                this.throwUnexpectedToken(this.nextToken());
+	            }
+	        }
+	        return this.finalize(node, new Node.Property(kind, (key), computed, value, method, shorthand));
+	    };
+	    Parser.prototype.parseObjectInitializer = function () {
+	        var node = this.createNode();
+	        this.expect('{');
+	        var properties = [];
+	        var hasProto = { value: false };
+	        while (!this.match('}')) {
+	            properties.push(this.parseObjectProperty(hasProto));
+	            if (!this.match('}')) {
+	                this.expectCommaSeparator();
+	            }
+	        }
+	        this.expect('}');
+	        return this.finalize(node, new Node.ObjectExpression(properties));
+	    };
+	    // ECMA-262 12.2.9 Template Literals
+	    Parser.prototype.parseTemplateHead = function () {
+	        assert_1.assert(this.lookahead.head, 'Template literal must start with a template head');
+	        var node = this.createNode();
+	        var token = this.nextToken();
+	        var value = {
+	            raw: token.value.raw,
+	            cooked: token.value.cooked
+	        };
+	        return this.finalize(node, new Node.TemplateElement(value, token.tail));
+	    };
+	    Parser.prototype.parseTemplateElement = function () {
+	        if (this.lookahead.type !== token_1.Token.Template) {
+	            this.throwUnexpectedToken();
+	        }
+	        var node = this.createNode();
+	        var token = this.nextToken();
+	        var value = {
+	            raw: token.value.raw,
+	            cooked: token.value.cooked
+	        };
+	        return this.finalize(node, new Node.TemplateElement(value, token.tail));
+	    };
+	    Parser.prototype.parseTemplateLiteral = function () {
+	        var node = this.createNode();
+	        var expressions = [];
+	        var quasis = [];
+	        var quasi = this.parseTemplateHead();
+	        quasis.push(quasi);
+	        while (!quasi.tail) {
+	            expressions.push(this.parseExpression());
+	            quasi = this.parseTemplateElement();
+	            quasis.push(quasi);
+	        }
+	        return this.finalize(node, new Node.TemplateLiteral(quasis, expressions));
+	    };
+	    // ECMA-262 12.2.10 The Grouping Operator
+	    Parser.prototype.reinterpretExpressionAsPattern = function (expr) {
+	        switch (expr.type) {
+	            case syntax_1.Syntax.Identifier:
+	            case syntax_1.Syntax.MemberExpression:
+	            case syntax_1.Syntax.RestElement:
+	            case syntax_1.Syntax.AssignmentPattern:
+	                break;
+	            case syntax_1.Syntax.SpreadElement:
+	                expr.type = syntax_1.Syntax.RestElement;
+	                this.reinterpretExpressionAsPattern(expr.argument);
+	                break;
+	            case syntax_1.Syntax.ArrayExpression:
+	                expr.type = syntax_1.Syntax.ArrayPattern;
+	                for (var i = 0; i < expr.elements.length; i++) {
+	                    if (expr.elements[i] !== null) {
+	                        this.reinterpretExpressionAsPattern(expr.elements[i]);
+	                    }
+	                }
+	                break;
+	            case syntax_1.Syntax.ObjectExpression:
+	                expr.type = syntax_1.Syntax.ObjectPattern;
+	                for (var i = 0; i < expr.properties.length; i++) {
+	                    this.reinterpretExpressionAsPattern(expr.properties[i].value);
+	                }
+	                break;
+	            case syntax_1.Syntax.AssignmentExpression:
+	                expr.type = syntax_1.Syntax.AssignmentPattern;
+	                delete expr.operator;
+	                this.reinterpretExpressionAsPattern(expr.left);
+	                break;
+	            default:
+	                // Allow other node type for tolerant parsing.
+	                break;
+	        }
+	    };
+	    Parser.prototype.parseGroupExpression = function () {
+	        var expr;
+	        this.expect('(');
+	        if (this.match(')')) {
+	            this.nextToken();
+	            if (!this.match('=>')) {
+	                this.expect('=>');
+	            }
+	            expr = {
+	                type: ArrowParameterPlaceHolder,
+	                params: [],
+	                async: false
+	            };
+	        }
+	        else {
+	            var startToken = this.lookahead;
+	            var params = [];
+	            if (this.match('...')) {
+	                expr = this.parseRestElement(params);
+	                this.expect(')');
+	                if (!this.match('=>')) {
+	                    this.expect('=>');
+	                }
+	                expr = {
+	                    type: ArrowParameterPlaceHolder,
+	                    params: [expr],
+	                    async: false
+	                };
+	            }
+	            else {
+	                var arrow = false;
+	                this.context.isBindingElement = true;
+	                expr = this.inheritCoverGrammar(this.parseAssignmentExpression);
+	                if (this.match(',')) {
+	                    var expressions = [];
+	                    this.context.isAssignmentTarget = false;
+	                    expressions.push(expr);
+	                    while (this.startMarker.index < this.scanner.length) {
+	                        if (!this.match(',')) {
+	                            break;
+	                        }
+	                        this.nextToken();
+	                        if (this.match(')')) {
+	                            this.nextToken();
+	                            for (var i = 0; i < expressions.length; i++) {
+	                                this.reinterpretExpressionAsPattern(expressions[i]);
+	                            }
+	                            arrow = true;
+	                            expr = {
+	                                type: ArrowParameterPlaceHolder,
+	                                params: expressions,
+	                                async: false
+	                            };
+	                        }
+	                        else if (this.match('...')) {
+	                            if (!this.context.isBindingElement) {
+	                                this.throwUnexpectedToken(this.lookahead);
+	                            }
+	                            expressions.push(this.parseRestElement(params));
+	                            this.expect(')');
+	                            if (!this.match('=>')) {
+	                                this.expect('=>');
+	                            }
+	                            this.context.isBindingElement = false;
+	                            for (var i = 0; i < expressions.length; i++) {
+	                                this.reinterpretExpressionAsPattern(expressions[i]);
+	                            }
+	                            arrow = true;
+	                            expr = {
+	                                type: ArrowParameterPlaceHolder,
+	                                params: expressions,
+	                                async: false
+	                            };
+	                        }
+	                        else {
+	                            expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression));
+	                        }
+	                        if (arrow) {
+	                            break;
+	                        }
+	                    }
+	                    if (!arrow) {
+	                        expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));
+	                    }
+	                }
+	                if (!arrow) {
+	                    this.expect(')');
+	                    if (this.match('=>')) {
+	                        if (expr.type === syntax_1.Syntax.Identifier && expr.name === 'yield') {
+	                            arrow = true;
+	                            expr = {
+	                                type: ArrowParameterPlaceHolder,
+	                                params: [expr],
+	                                async: false
+	                            };
+	                        }
+	                        if (!arrow) {
+	                            if (!this.context.isBindingElement) {
+	                                this.throwUnexpectedToken(this.lookahead);
+	                            }
+	                            if (expr.type === syntax_1.Syntax.SequenceExpression) {
+	                                for (var i = 0; i < expr.expressions.length; i++) {
+	                                    this.reinterpretExpressionAsPattern(expr.expressions[i]);
+	                                }
+	                            }
+	                            else {
+	                                this.reinterpretExpressionAsPattern(expr);
+	                            }
+	                            var params_1 = (expr.type === syntax_1.Syntax.SequenceExpression ? expr.expressions : [expr]);
+	                            expr = {
+	                                type: ArrowParameterPlaceHolder,
+	                                params: params_1,
+	                                async: false
+	                            };
+	                        }
+	                    }
+	                    this.context.isBindingElement = false;
+	                }
+	            }
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.3 Left-Hand-Side Expressions
+	    Parser.prototype.parseArguments = function () {
+	        this.expect('(');
+	        var args = [];
+	        if (!this.match(')')) {
+	            while (true) {
+	                var expr = this.match('...') ? this.parseSpreadElement() :
+	                    this.isolateCoverGrammar(this.parseAssignmentExpression);
+	                args.push(expr);
+	                if (this.match(')')) {
+	                    break;
+	                }
+	                this.expectCommaSeparator();
+	                if (this.match(')')) {
+	                    break;
+	                }
+	            }
+	        }
+	        this.expect(')');
+	        return args;
+	    };
+	    Parser.prototype.isIdentifierName = function (token) {
+	        return token.type === token_1.Token.Identifier ||
+	            token.type === token_1.Token.Keyword ||
+	            token.type === token_1.Token.BooleanLiteral ||
+	            token.type === token_1.Token.NullLiteral;
+	    };
+	    Parser.prototype.parseIdentifierName = function () {
+	        var node = this.createNode();
+	        var token = this.nextToken();
+	        if (!this.isIdentifierName(token)) {
+	            this.throwUnexpectedToken(token);
+	        }
+	        return this.finalize(node, new Node.Identifier(token.value));
+	    };
+	    Parser.prototype.parseNewExpression = function () {
+	        var node = this.createNode();
+	        var id = this.parseIdentifierName();
+	        assert_1.assert(id.name === 'new', 'New expression must start with `new`');
+	        var expr;
+	        if (this.match('.')) {
+	            this.nextToken();
+	            if (this.lookahead.type === token_1.Token.Identifier && this.context.inFunctionBody && this.lookahead.value === 'target') {
+	                var property = this.parseIdentifierName();
+	                expr = new Node.MetaProperty(id, property);
+	            }
+	            else {
+	                this.throwUnexpectedToken(this.lookahead);
+	            }
+	        }
+	        else {
+	            var callee = this.isolateCoverGrammar(this.parseLeftHandSideExpression);
+	            var args = this.match('(') ? this.parseArguments() : [];
+	            expr = new Node.NewExpression(callee, args);
+	            this.context.isAssignmentTarget = false;
+	            this.context.isBindingElement = false;
+	        }
+	        return this.finalize(node, expr);
+	    };
+	    Parser.prototype.parseAsyncArgument = function () {
+	        var arg = this.parseAssignmentExpression();
+	        this.context.firstCoverInitializedNameError = null;
+	        return arg;
+	    };
+	    Parser.prototype.parseAsyncArguments = function () {
+	        this.expect('(');
+	        var args = [];
+	        if (!this.match(')')) {
+	            while (true) {
+	                var expr = this.match('...') ? this.parseSpreadElement() :
+	                    this.isolateCoverGrammar(this.parseAsyncArgument);
+	                args.push(expr);
+	                if (this.match(')')) {
+	                    break;
+	                }
+	                this.expectCommaSeparator();
+	                if (this.match(')')) {
+	                    break;
+	                }
+	            }
+	        }
+	        this.expect(')');
+	        return args;
+	    };
+	    Parser.prototype.parseLeftHandSideExpressionAllowCall = function () {
+	        var startToken = this.lookahead;
+	        var maybeAsync = this.matchContextualKeyword('async');
+	        var previousAllowIn = this.context.allowIn;
+	        this.context.allowIn = true;
+	        var expr;
+	        if (this.matchKeyword('super') && this.context.inFunctionBody) {
+	            expr = this.createNode();
+	            this.nextToken();
+	            expr = this.finalize(expr, new Node.Super());
+	            if (!this.match('(') && !this.match('.') && !this.match('[')) {
+	                this.throwUnexpectedToken(this.lookahead);
+	            }
+	        }
+	        else {
+	            expr = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);
+	        }
+	        while (true) {
+	            if (this.match('.')) {
+	                this.context.isBindingElement = false;
+	                this.context.isAssignmentTarget = true;
+	                this.expect('.');
+	                var property = this.parseIdentifierName();
+	                expr = this.finalize(this.startNode(startToken), new Node.StaticMemberExpression(expr, property));
+	            }
+	            else if (this.match('(')) {
+	                var asyncArrow = maybeAsync && (startToken.lineNumber === this.lookahead.lineNumber);
+	                this.context.isBindingElement = false;
+	                this.context.isAssignmentTarget = false;
+	                var args = asyncArrow ? this.parseAsyncArguments() : this.parseArguments();
+	                expr = this.finalize(this.startNode(startToken), new Node.CallExpression(expr, args));
+	                if (asyncArrow && this.match('=>')) {
+	                    expr = {
+	                        type: ArrowParameterPlaceHolder,
+	                        params: args,
+	                        async: true
+	                    };
+	                }
+	            }
+	            else if (this.match('[')) {
+	                this.context.isBindingElement = false;
+	                this.context.isAssignmentTarget = true;
+	                this.expect('[');
+	                var property = this.isolateCoverGrammar(this.parseExpression);
+	                this.expect(']');
+	                expr = this.finalize(this.startNode(startToken), new Node.ComputedMemberExpression(expr, property));
+	            }
+	            else if (this.lookahead.type === token_1.Token.Template && this.lookahead.head) {
+	                var quasi = this.parseTemplateLiteral();
+	                expr = this.finalize(this.startNode(startToken), new Node.TaggedTemplateExpression(expr, quasi));
+	            }
+	            else {
+	                break;
+	            }
+	        }
+	        this.context.allowIn = previousAllowIn;
+	        return expr;
+	    };
+	    Parser.prototype.parseSuper = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('super');
+	        if (!this.match('[') && !this.match('.')) {
+	            this.throwUnexpectedToken(this.lookahead);
+	        }
+	        return this.finalize(node, new Node.Super());
+	    };
+	    Parser.prototype.parseLeftHandSideExpression = function () {
+	        assert_1.assert(this.context.allowIn, 'callee of new expression always allow in keyword.');
+	        var node = this.startNode(this.lookahead);
+	        var expr = (this.matchKeyword('super') && this.context.inFunctionBody) ? this.parseSuper() :
+	            this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);
+	        while (true) {
+	            if (this.match('[')) {
+	                this.context.isBindingElement = false;
+	                this.context.isAssignmentTarget = true;
+	                this.expect('[');
+	                var property = this.isolateCoverGrammar(this.parseExpression);
+	                this.expect(']');
+	                expr = this.finalize(node, new Node.ComputedMemberExpression(expr, property));
+	            }
+	            else if (this.match('.')) {
+	                this.context.isBindingElement = false;
+	                this.context.isAssignmentTarget = true;
+	                this.expect('.');
+	                var property = this.parseIdentifierName();
+	                expr = this.finalize(node, new Node.StaticMemberExpression(expr, property));
+	            }
+	            else if (this.lookahead.type === token_1.Token.Template && this.lookahead.head) {
+	                var quasi = this.parseTemplateLiteral();
+	                expr = this.finalize(node, new Node.TaggedTemplateExpression(expr, quasi));
+	            }
+	            else {
+	                break;
+	            }
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.4 Update Expressions
+	    Parser.prototype.parseUpdateExpression = function () {
+	        var expr;
+	        var startToken = this.lookahead;
+	        if (this.match('++') || this.match('--')) {
+	            var node = this.startNode(startToken);
+	            var token = this.nextToken();
+	            expr = this.inheritCoverGrammar(this.parseUnaryExpression);
+	            if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {
+	                this.tolerateError(messages_1.Messages.StrictLHSPrefix);
+	            }
+	            if (!this.context.isAssignmentTarget) {
+	                this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
+	            }
+	            var prefix = true;
+	            expr = this.finalize(node, new Node.UpdateExpression(token.value, expr, prefix));
+	            this.context.isAssignmentTarget = false;
+	            this.context.isBindingElement = false;
+	        }
+	        else {
+	            expr = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
+	            if (!this.hasLineTerminator && this.lookahead.type === token_1.Token.Punctuator) {
+	                if (this.match('++') || this.match('--')) {
+	                    if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {
+	                        this.tolerateError(messages_1.Messages.StrictLHSPostfix);
+	                    }
+	                    if (!this.context.isAssignmentTarget) {
+	                        this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
+	                    }
+	                    this.context.isAssignmentTarget = false;
+	                    this.context.isBindingElement = false;
+	                    var operator = this.nextToken().value;
+	                    var prefix = false;
+	                    expr = this.finalize(this.startNode(startToken), new Node.UpdateExpression(operator, expr, prefix));
+	                }
+	            }
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.5 Unary Operators
+	    Parser.prototype.parseAwaitExpression = function () {
+	        var node = this.createNode();
+	        this.nextToken();
+	        var argument = this.parseUnaryExpression();
+	        return this.finalize(node, new Node.AwaitExpression(argument));
+	    };
+	    Parser.prototype.parseUnaryExpression = function () {
+	        var expr;
+	        if (this.match('+') || this.match('-') || this.match('~') || this.match('!') ||
+	            this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) {
+	            var node = this.startNode(this.lookahead);
+	            var token = this.nextToken();
+	            expr = this.inheritCoverGrammar(this.parseUnaryExpression);
+	            expr = this.finalize(node, new Node.UnaryExpression(token.value, expr));
+	            if (this.context.strict && expr.operator === 'delete' && expr.argument.type === syntax_1.Syntax.Identifier) {
+	                this.tolerateError(messages_1.Messages.StrictDelete);
+	            }
+	            this.context.isAssignmentTarget = false;
+	            this.context.isBindingElement = false;
+	        }
+	        else if (this.context.await && this.matchContextualKeyword('await')) {
+	            expr = this.parseAwaitExpression();
+	        }
+	        else {
+	            expr = this.parseUpdateExpression();
+	        }
+	        return expr;
+	    };
+	    Parser.prototype.parseExponentiationExpression = function () {
+	        var startToken = this.lookahead;
+	        var expr = this.inheritCoverGrammar(this.parseUnaryExpression);
+	        if (expr.type !== syntax_1.Syntax.UnaryExpression && this.match('**')) {
+	            this.nextToken();
+	            this.context.isAssignmentTarget = false;
+	            this.context.isBindingElement = false;
+	            var left = expr;
+	            var right = this.isolateCoverGrammar(this.parseExponentiationExpression);
+	            expr = this.finalize(this.startNode(startToken), new Node.BinaryExpression('**', left, right));
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.6 Exponentiation Operators
+	    // ECMA-262 12.7 Multiplicative Operators
+	    // ECMA-262 12.8 Additive Operators
+	    // ECMA-262 12.9 Bitwise Shift Operators
+	    // ECMA-262 12.10 Relational Operators
+	    // ECMA-262 12.11 Equality Operators
+	    // ECMA-262 12.12 Binary Bitwise Operators
+	    // ECMA-262 12.13 Binary Logical Operators
+	    Parser.prototype.binaryPrecedence = function (token) {
+	        var op = token.value;
+	        var precedence;
+	        if (token.type === token_1.Token.Punctuator) {
+	            precedence = this.operatorPrecedence[op] || 0;
+	        }
+	        else if (token.type === token_1.Token.Keyword) {
+	            precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0;
+	        }
+	        else {
+	            precedence = 0;
+	        }
+	        return precedence;
+	    };
+	    Parser.prototype.parseBinaryExpression = function () {
+	        var startToken = this.lookahead;
+	        var expr = this.inheritCoverGrammar(this.parseExponentiationExpression);
+	        var token = this.lookahead;
+	        var prec = this.binaryPrecedence(token);
+	        if (prec > 0) {
+	            this.nextToken();
+	            token.prec = prec;
+	            this.context.isAssignmentTarget = false;
+	            this.context.isBindingElement = false;
+	            var markers = [startToken, this.lookahead];
+	            var left = expr;
+	            var right = this.isolateCoverGrammar(this.parseExponentiationExpression);
+	            var stack = [left, token, right];
+	            while (true) {
+	                prec = this.binaryPrecedence(this.lookahead);
+	                if (prec <= 0) {
+	                    break;
+	                }
+	                // Reduce: make a binary expression from the three topmost entries.
+	                while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
+	                    right = stack.pop();
+	                    var operator = stack.pop().value;
+	                    left = stack.pop();
+	                    markers.pop();
+	                    var node = this.startNode(markers[markers.length - 1]);
+	                    stack.push(this.finalize(node, new Node.BinaryExpression(operator, left, right)));
+	                }
+	                // Shift.
+	                token = this.nextToken();
+	                token.prec = prec;
+	                stack.push(token);
+	                markers.push(this.lookahead);
+	                stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression));
+	            }
+	            // Final reduce to clean-up the stack.
+	            var i = stack.length - 1;
+	            expr = stack[i];
+	            markers.pop();
+	            while (i > 1) {
+	                var node = this.startNode(markers.pop());
+	                expr = this.finalize(node, new Node.BinaryExpression(stack[i - 1].value, stack[i - 2], expr));
+	                i -= 2;
+	            }
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.14 Conditional Operator
+	    Parser.prototype.parseConditionalExpression = function () {
+	        var startToken = this.lookahead;
+	        var expr = this.inheritCoverGrammar(this.parseBinaryExpression);
+	        if (this.match('?')) {
+	            this.nextToken();
+	            var previousAllowIn = this.context.allowIn;
+	            this.context.allowIn = true;
+	            var consequent = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	            this.context.allowIn = previousAllowIn;
+	            this.expect(':');
+	            var alternate = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	            expr = this.finalize(this.startNode(startToken), new Node.ConditionalExpression(expr, consequent, alternate));
+	            this.context.isAssignmentTarget = false;
+	            this.context.isBindingElement = false;
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.15 Assignment Operators
+	    Parser.prototype.checkPatternParam = function (options, param) {
+	        switch (param.type) {
+	            case syntax_1.Syntax.Identifier:
+	                this.validateParam(options, param, param.name);
+	                break;
+	            case syntax_1.Syntax.RestElement:
+	                this.checkPatternParam(options, param.argument);
+	                break;
+	            case syntax_1.Syntax.AssignmentPattern:
+	                this.checkPatternParam(options, param.left);
+	                break;
+	            case syntax_1.Syntax.ArrayPattern:
+	                for (var i = 0; i < param.elements.length; i++) {
+	                    if (param.elements[i] !== null) {
+	                        this.checkPatternParam(options, param.elements[i]);
+	                    }
+	                }
+	                break;
+	            case syntax_1.Syntax.ObjectPattern:
+	                for (var i = 0; i < param.properties.length; i++) {
+	                    this.checkPatternParam(options, param.properties[i].value);
+	                }
+	                break;
+	            default:
+	                break;
+	        }
+	    };
+	    Parser.prototype.reinterpretAsCoverFormalsList = function (expr) {
+	        var params = [expr];
+	        var options;
+	        var asyncArrow = false;
+	        switch (expr.type) {
+	            case syntax_1.Syntax.Identifier:
+	                break;
+	            case ArrowParameterPlaceHolder:
+	                params = expr.params;
+	                asyncArrow = expr.async;
+	                break;
+	            default:
+	                return null;
+	        }
+	        options = {
+	            paramSet: {}
+	        };
+	        for (var i = 0; i < params.length; ++i) {
+	            var param = params[i];
+	            if (param.type === syntax_1.Syntax.AssignmentPattern) {
+	                if (param.right.type === syntax_1.Syntax.YieldExpression) {
+	                    if (param.right.argument) {
+	                        this.throwUnexpectedToken(this.lookahead);
+	                    }
+	                    param.right.type = syntax_1.Syntax.Identifier;
+	                    param.right.name = 'yield';
+	                    delete param.right.argument;
+	                    delete param.right.delegate;
+	                }
+	            }
+	            else if (asyncArrow && param.type === syntax_1.Syntax.Identifier && param.name === 'await') {
+	                this.throwUnexpectedToken(this.lookahead);
+	            }
+	            this.checkPatternParam(options, param);
+	            params[i] = param;
+	        }
+	        if (this.context.strict || !this.context.allowYield) {
+	            for (var i = 0; i < params.length; ++i) {
+	                var param = params[i];
+	                if (param.type === syntax_1.Syntax.YieldExpression) {
+	                    this.throwUnexpectedToken(this.lookahead);
+	                }
+	            }
+	        }
+	        if (options.message === messages_1.Messages.StrictParamDupe) {
+	            var token = this.context.strict ? options.stricted : options.firstRestricted;
+	            this.throwUnexpectedToken(token, options.message);
+	        }
+	        return {
+	            params: params,
+	            stricted: options.stricted,
+	            firstRestricted: options.firstRestricted,
+	            message: options.message
+	        };
+	    };
+	    Parser.prototype.parseAssignmentExpression = function () {
+	        var expr;
+	        if (!this.context.allowYield && this.matchKeyword('yield')) {
+	            expr = this.parseYieldExpression();
+	        }
+	        else {
+	            var startToken = this.lookahead;
+	            var token = startToken;
+	            expr = this.parseConditionalExpression();
+	            if (token.type === token_1.Token.Identifier && (token.lineNumber === this.lookahead.lineNumber) && token.value === 'async' && (this.lookahead.type === token_1.Token.Identifier)) {
+	                var arg = this.parsePrimaryExpression();
+	                expr = {
+	                    type: ArrowParameterPlaceHolder,
+	                    params: [arg],
+	                    async: true
+	                };
+	            }
+	            if (expr.type === ArrowParameterPlaceHolder || this.match('=>')) {
+	                // ECMA-262 14.2 Arrow Function Definitions
+	                this.context.isAssignmentTarget = false;
+	                this.context.isBindingElement = false;
+	                var isAsync = expr.async;
+	                var list = this.reinterpretAsCoverFormalsList(expr);
+	                if (list) {
+	                    if (this.hasLineTerminator) {
+	                        this.tolerateUnexpectedToken(this.lookahead);
+	                    }
+	                    this.context.firstCoverInitializedNameError = null;
+	                    var previousStrict = this.context.strict;
+	                    var previousAllowYield = this.context.allowYield;
+	                    var previousAwait = this.context.await;
+	                    this.context.allowYield = true;
+	                    this.context.await = isAsync;
+	                    var node = this.startNode(startToken);
+	                    this.expect('=>');
+	                    var body = this.match('{') ? this.parseFunctionSourceElements() :
+	                        this.isolateCoverGrammar(this.parseAssignmentExpression);
+	                    var expression = body.type !== syntax_1.Syntax.BlockStatement;
+	                    if (this.context.strict && list.firstRestricted) {
+	                        this.throwUnexpectedToken(list.firstRestricted, list.message);
+	                    }
+	                    if (this.context.strict && list.stricted) {
+	                        this.tolerateUnexpectedToken(list.stricted, list.message);
+	                    }
+	                    expr = isAsync ? this.finalize(node, new Node.AsyncArrowFunctionExpression(list.params, body, expression)) :
+	                        this.finalize(node, new Node.ArrowFunctionExpression(list.params, body, expression));
+	                    this.context.strict = previousStrict;
+	                    this.context.allowYield = previousAllowYield;
+	                    this.context.await = previousAwait;
+	                }
+	            }
+	            else {
+	                if (this.matchAssign()) {
+	                    if (!this.context.isAssignmentTarget) {
+	                        this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
+	                    }
+	                    if (this.context.strict && expr.type === syntax_1.Syntax.Identifier) {
+	                        var id = (expr);
+	                        if (this.scanner.isRestrictedWord(id.name)) {
+	                            this.tolerateUnexpectedToken(token, messages_1.Messages.StrictLHSAssignment);
+	                        }
+	                        if (this.scanner.isStrictModeReservedWord(id.name)) {
+	                            this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
+	                        }
+	                    }
+	                    if (!this.match('=')) {
+	                        this.context.isAssignmentTarget = false;
+	                        this.context.isBindingElement = false;
+	                    }
+	                    else {
+	                        this.reinterpretExpressionAsPattern(expr);
+	                    }
+	                    token = this.nextToken();
+	                    var right = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	                    expr = this.finalize(this.startNode(startToken), new Node.AssignmentExpression(token.value, expr, right));
+	                    this.context.firstCoverInitializedNameError = null;
+	                }
+	            }
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 12.16 Comma Operator
+	    Parser.prototype.parseExpression = function () {
+	        var startToken = this.lookahead;
+	        var expr = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	        if (this.match(',')) {
+	            var expressions = [];
+	            expressions.push(expr);
+	            while (this.startMarker.index < this.scanner.length) {
+	                if (!this.match(',')) {
+	                    break;
+	                }
+	                this.nextToken();
+	                expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
+	            }
+	            expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));
+	        }
+	        return expr;
+	    };
+	    // ECMA-262 13.2 Block
+	    Parser.prototype.parseStatementListItem = function () {
+	        var statement;
+	        this.context.isAssignmentTarget = true;
+	        this.context.isBindingElement = true;
+	        if (this.lookahead.type === token_1.Token.Keyword) {
+	            switch (this.lookahead.value) {
+	                case 'export':
+	                    if (!this.context.isModule) {
+	                        this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalExportDeclaration);
+	                    }
+	                    statement = this.parseExportDeclaration();
+	                    break;
+	                case 'import':
+	                    if (!this.context.isModule) {
+	                        this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalImportDeclaration);
+	                    }
+	                    statement = this.parseImportDeclaration();
+	                    break;
+	                case 'const':
+	                    statement = this.parseLexicalDeclaration({ inFor: false });
+	                    break;
+	                case 'function':
+	                    statement = this.parseFunctionDeclaration();
+	                    break;
+	                case 'class':
+	                    statement = this.parseClassDeclaration();
+	                    break;
+	                case 'let':
+	                    statement = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({ inFor: false }) : this.parseStatement();
+	                    break;
+	                default:
+	                    statement = this.parseStatement();
+	                    break;
+	            }
+	        }
+	        else {
+	            statement = this.parseStatement();
+	        }
+	        return statement;
+	    };
+	    Parser.prototype.parseBlock = function () {
+	        var node = this.createNode();
+	        this.expect('{');
+	        var block = [];
+	        while (true) {
+	            if (this.match('}')) {
+	                break;
+	            }
+	            block.push(this.parseStatementListItem());
+	        }
+	        this.expect('}');
+	        return this.finalize(node, new Node.BlockStatement(block));
+	    };
+	    // ECMA-262 13.3.1 Let and Const Declarations
+	    Parser.prototype.parseLexicalBinding = function (kind, options) {
+	        var node = this.createNode();
+	        var params = [];
+	        var id = this.parsePattern(params, kind);
+	        // ECMA-262 12.2.1
+	        if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {
+	            if (this.scanner.isRestrictedWord((id).name)) {
+	                this.tolerateError(messages_1.Messages.StrictVarName);
+	            }
+	        }
+	        var init = null;
+	        if (kind === 'const') {
+	            if (!this.matchKeyword('in') && !this.matchContextualKeyword('of')) {
+	                if (this.match('=')) {
+	                    this.nextToken();
+	                    init = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	                }
+	                else {
+	                    this.throwError(messages_1.Messages.DeclarationMissingInitializer, 'const');
+	                }
+	            }
+	        }
+	        else if ((!options.inFor && id.type !== syntax_1.Syntax.Identifier) || this.match('=')) {
+	            this.expect('=');
+	            init = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	        }
+	        return this.finalize(node, new Node.VariableDeclarator(id, init));
+	    };
+	    Parser.prototype.parseBindingList = function (kind, options) {
+	        var list = [this.parseLexicalBinding(kind, options)];
+	        while (this.match(',')) {
+	            this.nextToken();
+	            list.push(this.parseLexicalBinding(kind, options));
+	        }
+	        return list;
+	    };
+	    Parser.prototype.isLexicalDeclaration = function () {
+	        var previousIndex = this.scanner.index;
+	        var previousLineNumber = this.scanner.lineNumber;
+	        var previousLineStart = this.scanner.lineStart;
+	        this.collectComments();
+	        var next = this.scanner.lex();
+	        this.scanner.index = previousIndex;
+	        this.scanner.lineNumber = previousLineNumber;
+	        this.scanner.lineStart = previousLineStart;
+	        return (next.type === token_1.Token.Identifier) ||
+	            (next.type === token_1.Token.Punctuator && next.value === '[') ||
+	            (next.type === token_1.Token.Punctuator && next.value === '{') ||
+	            (next.type === token_1.Token.Keyword && next.value === 'let') ||
+	            (next.type === token_1.Token.Keyword && next.value === 'yield');
+	    };
+	    Parser.prototype.parseLexicalDeclaration = function (options) {
+	        var node = this.createNode();
+	        var kind = this.nextToken().value;
+	        assert_1.assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const');
+	        var declarations = this.parseBindingList(kind, options);
+	        this.consumeSemicolon();
+	        return this.finalize(node, new Node.VariableDeclaration(declarations, kind));
+	    };
+	    // ECMA-262 13.3.3 Destructuring Binding Patterns
+	    Parser.prototype.parseBindingRestElement = function (params, kind) {
+	        var node = this.createNode();
+	        this.expect('...');
+	        params.push(this.lookahead);
+	        var arg = this.parseVariableIdentifier(kind);
+	        return this.finalize(node, new Node.RestElement(arg));
+	    };
+	    Parser.prototype.parseArrayPattern = function (params, kind) {
+	        var node = this.createNode();
+	        this.expect('[');
+	        var elements = [];
+	        while (!this.match(']')) {
+	            if (this.match(',')) {
+	                this.nextToken();
+	                elements.push(null);
+	            }
+	            else {
+	                if (this.match('...')) {
+	                    elements.push(this.parseBindingRestElement(params, kind));
+	                    break;
+	                }
+	                else {
+	                    elements.push(this.parsePatternWithDefault(params, kind));
+	                }
+	                if (!this.match(']')) {
+	                    this.expect(',');
+	                }
+	            }
+	        }
+	        this.expect(']');
+	        return this.finalize(node, new Node.ArrayPattern(elements));
+	    };
+	    Parser.prototype.parsePropertyPattern = function (params, kind) {
+	        var node = this.createNode();
+	        var computed = false;
+	        var shorthand = false;
+	        var method = false;
+	        var key;
+	        var value;
+	        if (this.lookahead.type === token_1.Token.Identifier) {
+	            var keyToken = this.lookahead;
+	            key = this.parseVariableIdentifier();
+	            var init = this.finalize(node, new Node.Identifier(keyToken.value));
+	            if (this.match('=')) {
+	                params.push(keyToken);
+	                shorthand = true;
+	                this.nextToken();
+	                var expr = this.parseAssignmentExpression();
+	                value = this.finalize(this.startNode(keyToken), new Node.AssignmentPattern(init, expr));
+	            }
+	            else if (!this.match(':')) {
+	                params.push(keyToken);
+	                shorthand = true;
+	                value = init;
+	            }
+	            else {
+	                this.expect(':');
+	                value = this.parsePatternWithDefault(params, kind);
+	            }
+	        }
+	        else {
+	            computed = this.match('[');
+	            key = this.parseObjectPropertyKey();
+	            this.expect(':');
+	            value = this.parsePatternWithDefault(params, kind);
+	        }
+	        return this.finalize(node, new Node.Property('init', key, computed, value, method, shorthand));
+	    };
+	    Parser.prototype.parseObjectPattern = function (params, kind) {
+	        var node = this.createNode();
+	        var properties = [];
+	        this.expect('{');
+	        while (!this.match('}')) {
+	            properties.push(this.parsePropertyPattern(params, kind));
+	            if (!this.match('}')) {
+	                this.expect(',');
+	            }
+	        }
+	        this.expect('}');
+	        return this.finalize(node, new Node.ObjectPattern(properties));
+	    };
+	    Parser.prototype.parsePattern = function (params, kind) {
+	        var pattern;
+	        if (this.match('[')) {
+	            pattern = this.parseArrayPattern(params, kind);
+	        }
+	        else if (this.match('{')) {
+	            pattern = this.parseObjectPattern(params, kind);
+	        }
+	        else {
+	            if (this.matchKeyword('let') && (kind === 'const' || kind === 'let')) {
+	                this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.LetInLexicalBinding);
+	            }
+	            params.push(this.lookahead);
+	            pattern = this.parseVariableIdentifier(kind);
+	        }
+	        return pattern;
+	    };
+	    Parser.prototype.parsePatternWithDefault = function (params, kind) {
+	        var startToken = this.lookahead;
+	        var pattern = this.parsePattern(params, kind);
+	        if (this.match('=')) {
+	            this.nextToken();
+	            var previousAllowYield = this.context.allowYield;
+	            this.context.allowYield = true;
+	            var right = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	            this.context.allowYield = previousAllowYield;
+	            pattern = this.finalize(this.startNode(startToken), new Node.AssignmentPattern(pattern, right));
+	        }
+	        return pattern;
+	    };
+	    // ECMA-262 13.3.2 Variable Statement
+	    Parser.prototype.parseVariableIdentifier = function (kind) {
+	        var node = this.createNode();
+	        var token = this.nextToken();
+	        if (token.type === token_1.Token.Keyword && token.value === 'yield') {
+	            if (this.context.strict) {
+	                this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
+	            }
+	            if (!this.context.allowYield) {
+	                this.throwUnexpectedToken(token);
+	            }
+	        }
+	        else if (token.type !== token_1.Token.Identifier) {
+	            if (this.context.strict && token.type === token_1.Token.Keyword && this.scanner.isStrictModeReservedWord(token.value)) {
+	                this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
+	            }
+	            else {
+	                if (this.context.strict || token.value !== 'let' || kind !== 'var') {
+	                    this.throwUnexpectedToken(token);
+	                }
+	            }
+	        }
+	        else if ((this.context.isModule || this.context.await) && token.type === token_1.Token.Identifier && token.value === 'await') {
+	            this.tolerateUnexpectedToken(token);
+	        }
+	        return this.finalize(node, new Node.Identifier(token.value));
+	    };
+	    Parser.prototype.parseVariableDeclaration = function (options) {
+	        var node = this.createNode();
+	        var params = [];
+	        var id = this.parsePattern(params, 'var');
+	        // ECMA-262 12.2.1
+	        if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {
+	            if (this.scanner.isRestrictedWord((id).name)) {
+	                this.tolerateError(messages_1.Messages.StrictVarName);
+	            }
+	        }
+	        var init = null;
+	        if (this.match('=')) {
+	            this.nextToken();
+	            init = this.isolateCoverGrammar(this.parseAssignmentExpression);
+	        }
+	        else if (id.type !== syntax_1.Syntax.Identifier && !options.inFor) {
+	            this.expect('=');
+	        }
+	        return this.finalize(node, new Node.VariableDeclarator(id, init));
+	    };
+	    Parser.prototype.parseVariableDeclarationList = function (options) {
+	        var opt = { inFor: options.inFor };
+	        var list = [];
+	        list.push(this.parseVariableDeclaration(opt));
+	        while (this.match(',')) {
+	            this.nextToken();
+	            list.push(this.parseVariableDeclaration(opt));
+	        }
+	        return list;
+	    };
+	    Parser.prototype.parseVariableStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('var');
+	        var declarations = this.parseVariableDeclarationList({ inFor: false });
+	        this.consumeSemicolon();
+	        return this.finalize(node, new Node.VariableDeclaration(declarations, 'var'));
+	    };
+	    // ECMA-262 13.4 Empty Statement
+	    Parser.prototype.parseEmptyStatement = function () {
+	        var node = this.createNode();
+	        this.expect(';');
+	        return this.finalize(node, new Node.EmptyStatement());
+	    };
+	    // ECMA-262 13.5 Expression Statement
+	    Parser.prototype.parseExpressionStatement = function () {
+	        var node = this.createNode();
+	        var expr = this.parseExpression();
+	        this.consumeSemicolon();
+	        return this.finalize(node, new Node.ExpressionStatement(expr));
+	    };
+	    // ECMA-262 13.6 If statement
+	    Parser.prototype.parseIfStatement = function () {
+	        var node = this.createNode();
+	        var consequent;
+	        var alternate = null;
+	        this.expectKeyword('if');
+	        this.expect('(');
+	        var test = this.parseExpression();
+	        if (!this.match(')') && this.config.tolerant) {
+	            this.tolerateUnexpectedToken(this.nextToken());
+	            consequent = this.finalize(this.createNode(), new Node.EmptyStatement());
+	        }
+	        else {
+	            this.expect(')');
+	            consequent = this.parseStatement();
+	            if (this.matchKeyword('else')) {
+	                this.nextToken();
+	                alternate = this.parseStatement();
+	            }
+	        }
+	        return this.finalize(node, new Node.IfStatement(test, consequent, alternate));
+	    };
+	    // ECMA-262 13.7.2 The do-while Statement
+	    Parser.prototype.parseDoWhileStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('do');
+	        var previousInIteration = this.context.inIteration;
+	        this.context.inIteration = true;
+	        var body = this.parseStatement();
+	        this.context.inIteration = previousInIteration;
+	        this.expectKeyword('while');
+	        this.expect('(');
+	        var test = this.parseExpression();
+	        this.expect(')');
+	        if (this.match(';')) {
+	            this.nextToken();
+	        }
+	        return this.finalize(node, new Node.DoWhileStatement(body, test));
+	    };
+	    // ECMA-262 13.7.3 The while Statement
+	    Parser.prototype.parseWhileStatement = function () {
+	        var node = this.createNode();
+	        var body;
+	        this.expectKeyword('while');
+	        this.expect('(');
+	        var test = this.parseExpression();
+	        if (!this.match(')') && this.config.tolerant) {
+	            this.tolerateUnexpectedToken(this.nextToken());
+	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
+	        }
+	        else {
+	            this.expect(')');
+	            var previousInIteration = this.context.inIteration;
+	            this.context.inIteration = true;
+	            body = this.parseStatement();
+	            this.context.inIteration = previousInIteration;
+	        }
+	        return this.finalize(node, new Node.WhileStatement(test, body));
+	    };
+	    // ECMA-262 13.7.4 The for Statement
+	    // ECMA-262 13.7.5 The for-in and for-of Statements
+	    Parser.prototype.parseForStatement = function () {
+	        var init = null;
+	        var test = null;
+	        var update = null;
+	        var forIn = true;
+	        var left, right;
+	        var node = this.createNode();
+	        this.expectKeyword('for');
+	        this.expect('(');
+	        if (this.match(';')) {
+	            this.nextToken();
+	        }
+	        else {
+	            if (this.matchKeyword('var')) {
+	                init = this.createNode();
+	                this.nextToken();
+	                var previousAllowIn = this.context.allowIn;
+	                this.context.allowIn = false;
+	                var declarations = this.parseVariableDeclarationList({ inFor: true });
+	                this.context.allowIn = previousAllowIn;
+	                if (declarations.length === 1 && this.matchKeyword('in')) {
+	                    var decl = declarations[0];
+	                    if (decl.init && (decl.id.type === syntax_1.Syntax.ArrayPattern || decl.id.type === syntax_1.Syntax.ObjectPattern || this.context.strict)) {
+	                        this.tolerateError(messages_1.Messages.ForInOfLoopInitializer, 'for-in');
+	                    }
+	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
+	                    this.nextToken();
+	                    left = init;
+	                    right = this.parseExpression();
+	                    init = null;
+	                }
+	                else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {
+	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
+	                    this.nextToken();
+	                    left = init;
+	                    right = this.parseAssignmentExpression();
+	                    init = null;
+	                    forIn = false;
+	                }
+	                else {
+	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
+	                    this.expect(';');
+	                }
+	            }
+	            else if (this.matchKeyword('const') || this.matchKeyword('let')) {
+	                init = this.createNode();
+	                var kind = this.nextToken().value;
+	                if (!this.context.strict && this.lookahead.value === 'in') {
+	                    init = this.finalize(init, new Node.Identifier(kind));
+	                    this.nextToken();
+	                    left = init;
+	                    right = this.parseExpression();
+	                    init = null;
+	                }
+	                else {
+	                    var previousAllowIn = this.context.allowIn;
+	                    this.context.allowIn = false;
+	                    var declarations = this.parseBindingList(kind, { inFor: true });
+	                    this.context.allowIn = previousAllowIn;
+	                    if (declarations.length === 1 && declarations[0].init === null && this.matchKeyword('in')) {
+	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
+	                        this.nextToken();
+	                        left = init;
+	                        right = this.parseExpression();
+	                        init = null;
+	                    }
+	                    else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {
+	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
+	                        this.nextToken();
+	                        left = init;
+	                        right = this.parseAssignmentExpression();
+	                        init = null;
+	                        forIn = false;
+	                    }
+	                    else {
+	                        this.consumeSemicolon();
+	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
+	                    }
+	                }
+	            }
+	            else {
+	                var initStartToken = this.lookahead;
+	                var previousAllowIn = this.context.allowIn;
+	                this.context.allowIn = false;
+	                init = this.inheritCoverGrammar(this.parseAssignmentExpression);
+	                this.context.allowIn = previousAllowIn;
+	                if (this.matchKeyword('in')) {
+	                    if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {
+	                        this.tolerateError(messages_1.Messages.InvalidLHSInForIn);
+	                    }
+	                    this.nextToken();
+	                    this.reinterpretExpressionAsPattern(init);
+	                    left = init;
+	                    right = this.parseExpression();
+	                    init = null;
+	                }
+	                else if (this.matchContextualKeyword('of')) {
+	                    if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {
+	                        this.tolerateError(messages_1.Messages.InvalidLHSInForLoop);
+	                    }
+	                    this.nextToken();
+	                    this.reinterpretExpressionAsPattern(init);
+	                    left = init;
+	                    right = this.parseAssignmentExpression();
+	                    init = null;
+	                    forIn = false;
+	                }
+	                else {
+	                    if (this.match(',')) {
+	                        var initSeq = [init];
+	                        while (this.match(',')) {
+	                            this.nextToken();
+	                            initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
+	                        }
+	                        init = this.finalize(this.startNode(initStartToken), new Node.SequenceExpression(initSeq));
+	                    }
+	                    this.expect(';');
+	                }
+	            }
+	        }
+	        if (typeof left === 'undefined') {
+	            if (!this.match(';')) {
+	                test = this.parseExpression();
+	            }
+	            this.expect(';');
+	            if (!this.match(')')) {
+	                update = this.parseExpression();
+	            }
+	        }
+	        var body;
+	        if (!this.match(')') && this.config.tolerant) {
+	            this.tolerateUnexpectedToken(this.nextToken());
+	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
+	        }
+	        else {
+	            this.expect(')');
+	            var previousInIteration = this.context.inIteration;
+	            this.context.inIteration = true;
+	            body = this.isolateCoverGrammar(this.parseStatement);
+	            this.context.inIteration = previousInIteration;
+	        }
+	        return (typeof left === 'undefined') ?
+	            this.finalize(node, new Node.ForStatement(init, test, update, body)) :
+	            forIn ? this.finalize(node, new Node.ForInStatement(left, right, body)) :
+	                this.finalize(node, new Node.ForOfStatement(left, right, body));
+	    };
+	    // ECMA-262 13.8 The continue statement
+	    Parser.prototype.parseContinueStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('continue');
+	        var label = null;
+	        if (this.lookahead.type === token_1.Token.Identifier && !this.hasLineTerminator) {
+	            var id = this.parseVariableIdentifier();
+	            label = id;
+	            var key = '$' + id.name;
+	            if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
+	                this.throwError(messages_1.Messages.UnknownLabel, id.name);
+	            }
+	        }
+	        this.consumeSemicolon();
+	        if (label === null && !this.context.inIteration) {
+	            this.throwError(messages_1.Messages.IllegalContinue);
+	        }
+	        return this.finalize(node, new Node.ContinueStatement(label));
+	    };
+	    // ECMA-262 13.9 The break statement
+	    Parser.prototype.parseBreakStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('break');
+	        var label = null;
+	        if (this.lookahead.type === token_1.Token.Identifier && !this.hasLineTerminator) {
+	            var id = this.parseVariableIdentifier();
+	            var key = '$' + id.name;
+	            if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
+	                this.throwError(messages_1.Messages.UnknownLabel, id.name);
+	            }
+	            label = id;
+	        }
+	        this.consumeSemicolon();
+	        if (label === null && !this.context.inIteration && !this.context.inSwitch) {
+	            this.throwError(messages_1.Messages.IllegalBreak);
+	        }
+	        return this.finalize(node, new Node.BreakStatement(label));
+	    };
+	    // ECMA-262 13.10 The return statement
+	    Parser.prototype.parseReturnStatement = function () {
+	        if (!this.context.inFunctionBody) {
+	            this.tolerateError(messages_1.Messages.IllegalReturn);
+	        }
+	        var node = this.createNode();
+	        this.expectKeyword('return');
+	        var hasArgument = !this.match(';') && !this.match('}') &&
+	            !this.hasLineTerminator && this.lookahead.type !== token_1.Token.EOF;
+	        var argument = hasArgument ? this.parseExpression() : null;
+	        this.consumeSemicolon();
+	        return this.finalize(node, new Node.ReturnStatement(argument));
+	    };
+	    // ECMA-262 13.11 The with statement
+	    Parser.prototype.parseWithStatement = function () {
+	        if (this.context.strict) {
+	            this.tolerateError(messages_1.Messages.StrictModeWith);
+	        }
+	        var node = this.createNode();
+	        this.expectKeyword('with');
+	        this.expect('(');
+	        var object = this.parseExpression();
+	        this.expect(')');
+	        var body = this.parseStatement();
+	        return this.finalize(node, new Node.WithStatement(object, body));
+	    };
+	    // ECMA-262 13.12 The switch statement
+	    Parser.prototype.parseSwitchCase = function () {
+	        var node = this.createNode();
+	        var test;
+	        if (this.matchKeyword('default')) {
+	            this.nextToken();
+	            test = null;
+	        }
+	        else {
+	            this.expectKeyword('case');
+	            test = this.parseExpression();
+	        }
+	        this.expect(':');
+	        var consequent = [];
+	        while (true) {
+	            if (this.match('}') || this.matchKeyword('default') || this.matchKeyword('case')) {
+	                break;
+	            }
+	            consequent.push(this.parseStatementListItem());
+	        }
+	        return this.finalize(node, new Node.SwitchCase(test, consequent));
+	    };
+	    Parser.prototype.parseSwitchStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('switch');
+	        this.expect('(');
+	        var discriminant = this.parseExpression();
+	        this.expect(')');
+	        var previousInSwitch = this.context.inSwitch;
+	        this.context.inSwitch = true;
+	        var cases = [];
+	        var defaultFound = false;
+	        this.expect('{');
+	        while (true) {
+	            if (this.match('}')) {
+	                break;
+	            }
+	            var clause = this.parseSwitchCase();
+	            if (clause.test === null) {
+	                if (defaultFound) {
+	                    this.throwError(messages_1.Messages.MultipleDefaultsInSwitch);
+	                }
+	                defaultFound = true;
+	            }
+	            cases.push(clause);
+	        }
+	        this.expect('}');
+	        this.context.inSwitch = previousInSwitch;
+	        return this.finalize(node, new Node.SwitchStatement(discriminant, cases));
+	    };
+	    // ECMA-262 13.13 Labelled Statements
+	    Parser.prototype.parseLabelledStatement = function () {
+	        var node = this.createNode();
+	        var expr = this.parseExpression();
+	        var statement;
+	        if ((expr.type === syntax_1.Syntax.Identifier) && this.match(':')) {
+	            this.nextToken();
+	            var id = (expr);
+	            var key = '$' + id.name;
+	            if (Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
+	                this.throwError(messages_1.Messages.Redeclaration, 'Label', id.name);
+	            }
+	            this.context.labelSet[key] = true;
+	            var labeledBody = this.parseStatement();
+	            delete this.context.labelSet[key];
+	            statement = new Node.LabeledStatement(id, labeledBody);
+	        }
+	        else {
+	            this.consumeSemicolon();
+	            statement = new Node.ExpressionStatement(expr);
+	        }
+	        return this.finalize(node, statement);
+	    };
+	    // ECMA-262 13.14 The throw statement
+	    Parser.prototype.parseThrowStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('throw');
+	        if (this.hasLineTerminator) {
+	            this.throwError(messages_1.Messages.NewlineAfterThrow);
+	        }
+	        var argument = this.parseExpression();
+	        this.consumeSemicolon();
+	        return this.finalize(node, new Node.ThrowStatement(argument));
+	    };
+	    // ECMA-262 13.15 The try statement
+	    Parser.prototype.parseCatchClause = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('catch');
+	        this.expect('(');
+	        if (this.match(')')) {
+	            this.throwUnexpectedToken(this.lookahead);
+	        }
+	        var params = [];
+	        var param = this.parsePattern(params);
+	        var paramMap = {};
+	        for (var i = 0; i < params.length; i++) {
+	            var key = '$' + params[i].value;
+	            if (Object.prototype.hasOwnProperty.call(paramMap, key)) {
+	                this.tolerateError(messages_1.Messages.DuplicateBinding, params[i].value);
+	            }
+	            paramMap[key] = true;
+	        }
+	        if (this.context.strict && param.type === syntax_1.Syntax.Identifier) {
+	            if (this.scanner.isRestrictedWord((param).name)) {
+	                this.tolerateError(messages_1.Messages.StrictCatchVariable);
+	            }
+	        }
+	        this.expect(')');
+	        var body = this.parseBlock();
+	        return this.finalize(node, new Node.CatchClause(param, body));
+	    };
+	    Parser.prototype.parseFinallyClause = function () {
+	        this.expectKeyword('finally');
+	        return this.parseBlock();
+	    };
+	    Parser.prototype.parseTryStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('try');
+	        var block = this.parseBlock();
+	        var handler = this.matchKeyword('catch') ? this.parseCatchClause() : null;
+	        var finalizer = this.matchKeyword('finally') ? this.parseFinallyClause() : null;
+	        if (!handler && !finalizer) {
+	            this.throwError(messages_1.Messages.NoCatchOrFinally);
+	        }
+	        return this.finalize(node, new Node.TryStatement(block, handler, finalizer));
+	    };
+	    // ECMA-262 13.16 The debugger statement
+	    Parser.prototype.parseDebuggerStatement = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('debugger');
+	        this.consumeSemicolon();
+	        return this.finalize(node, new Node.DebuggerStatement());
+	    };
+	    // ECMA-262 13 Statements
+	    Parser.prototype.parseStatement = function () {
+	        var statement;
+	        switch (this.lookahead.type) {
+	            case token_1.Token.BooleanLiteral:
+	            case token_1.Token.NullLiteral:
+	            case token_1.Token.NumericLiteral:
+	            case token_1.Token.StringLiteral:
+	            case token_1.Token.Template:
+	            case token_1.Token.RegularExpression:
+	                statement = this.parseExpressionStatement();
+	                break;
+	            case token_1.Token.Punctuator:
+	                var value = this.lookahead.value;
+	                if (value === '{') {
+	                    statement = this.parseBlock();
+	                }
+	                else if (value === '(') {
+	                    statement = this.parseExpressionStatement();
+	                }
+	                else if (value === ';') {
+	                    statement = this.parseEmptyStatement();
+	                }
+	                else {
+	                    statement = this.parseExpressionStatement();
+	                }
+	                break;
+	            case token_1.Token.Identifier:
+	                statement = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement();
+	                break;
+	            case token_1.Token.Keyword:
+	                switch (this.lookahead.value) {
+	                    case 'break':
+	                        statement = this.parseBreakStatement();
+	                        break;
+	                    case 'continue':
+	                        statement = this.parseContinueStatement();
+	                        break;
+	                    case 'debugger':
+	                        statement = this.parseDebuggerStatement();
+	                        break;
+	                    case 'do':
+	                        statement = this.parseDoWhileStatement();
+	                        break;
+	                    case 'for':
+	                        statement = this.parseForStatement();
+	                        break;
+	                    case 'function':
+	                        statement = this.parseFunctionDeclaration();
+	                        break;
+	                    case 'if':
+	                        statement = this.parseIfStatement();
+	                        break;
+	                    case 'return':
+	                        statement = this.parseReturnStatement();
+	                        break;
+	                    case 'switch':
+	                        statement = this.parseSwitchStatement();
+	                        break;
+	                    case 'throw':
+	                        statement = this.parseThrowStatement();
+	                        break;
+	                    case 'try':
+	                        statement = this.parseTryStatement();
+	                        break;
+	                    case 'var':
+	                        statement = this.parseVariableStatement();
+	                        break;
+	                    case 'while':
+	                        statement = this.parseWhileStatement();
+	                        break;
+	                    case 'with':
+	                        statement = this.parseWithStatement();
+	                        break;
+	                    default:
+	                        statement = this.parseExpressionStatement();
+	                        break;
+	                }
+	                break;
+	            default:
+	                statement = this.throwUnexpectedToken(this.lookahead);
+	        }
+	        return statement;
+	    };
+	    // ECMA-262 14.1 Function Definition
+	    Parser.prototype.parseFunctionSourceElements = function () {
+	        var node = this.createNode();
+	        this.expect('{');
+	        var body = this.parseDirectivePrologues();
+	        var previousLabelSet = this.context.labelSet;
+	        var previousInIteration = this.context.inIteration;
+	        var previousInSwitch = this.context.inSwitch;
+	        var previousInFunctionBody = this.context.inFunctionBody;
+	        this.context.labelSet = {};
+	        this.context.inIteration = false;
+	        this.context.inSwitch = false;
+	        this.context.inFunctionBody = true;
+	        while (this.startMarker.index < this.scanner.length) {
+	            if (this.match('}')) {
+	                break;
+	            }
+	            body.push(this.parseStatementListItem());
+	        }
+	        this.expect('}');
+	        this.context.labelSet = previousLabelSet;
+	        this.context.inIteration = previousInIteration;
+	        this.context.inSwitch = previousInSwitch;
+	        this.context.inFunctionBody = previousInFunctionBody;
+	        return this.finalize(node, new Node.BlockStatement(body));
+	    };
+	    Parser.prototype.validateParam = function (options, param, name) {
+	        var key = '$' + name;
+	        if (this.context.strict) {
+	            if (this.scanner.isRestrictedWord(name)) {
+	                options.stricted = param;
+	                options.message = messages_1.Messages.StrictParamName;
+	            }
+	            if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
+	                options.stricted = param;
+	                options.message = messages_1.Messages.StrictParamDupe;
+	            }
+	        }
+	        else if (!options.firstRestricted) {
+	            if (this.scanner.isRestrictedWord(name)) {
+	                options.firstRestricted = param;
+	                options.message = messages_1.Messages.StrictParamName;
+	            }
+	            else if (this.scanner.isStrictModeReservedWord(name)) {
+	                options.firstRestricted = param;
+	                options.message = messages_1.Messages.StrictReservedWord;
+	            }
+	            else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
+	                options.stricted = param;
+	                options.message = messages_1.Messages.StrictParamDupe;
+	            }
+	        }
+	        /* istanbul ignore next */
+	        if (typeof Object.defineProperty === 'function') {
+	            Object.defineProperty(options.paramSet, key, { value: true, enumerable: true, writable: true, configurable: true });
+	        }
+	        else {
+	            options.paramSet[key] = true;
+	        }
+	    };
+	    Parser.prototype.parseRestElement = function (params) {
+	        var node = this.createNode();
+	        this.nextToken();
+	        if (this.match('{')) {
+	            this.throwError(messages_1.Messages.ObjectPatternAsRestParameter);
+	        }
+	        params.push(this.lookahead);
+	        var param = this.parseVariableIdentifier();
+	        if (this.match('=')) {
+	            this.throwError(messages_1.Messages.DefaultRestParameter);
+	        }
+	        if (!this.match(')')) {
+	            this.throwError(messages_1.Messages.ParameterAfterRestParameter);
+	        }
+	        return this.finalize(node, new Node.RestElement(param));
+	    };
+	    Parser.prototype.parseFormalParameter = function (options) {
+	        var param;
+	        var params = [];
+	        var token = this.lookahead;
+	        if (token.value === '...') {
+	            param = this.parseRestElement(params);
+	            this.validateParam(options, param.argument, param.argument.name);
+	            options.params.push(param);
+	            return;
+	        }
+	        param = this.parsePatternWithDefault(params);
+	        for (var i = 0; i < params.length; i++) {
+	            this.validateParam(options, params[i], params[i].value);
+	        }
+	        options.params.push(param);
+	    };
+	    Parser.prototype.parseFormalParameters = function (firstRestricted) {
+	        var options;
+	        options = {
+	            params: [],
+	            firstRestricted: firstRestricted
+	        };
+	        this.expect('(');
+	        if (!this.match(')')) {
+	            options.paramSet = {};
+	            while (this.startMarker.index < this.scanner.length) {
+	                this.parseFormalParameter(options);
+	                if (this.match(')')) {
+	                    break;
+	                }
+	                this.expect(',');
+	                if (this.match(')')) {
+	                    break;
+	                }
+	            }
+	        }
+	        this.expect(')');
+	        return {
+	            params: options.params,
+	            stricted: options.stricted,
+	            firstRestricted: options.firstRestricted,
+	            message: options.message
+	        };
+	    };
+	    Parser.prototype.matchAsyncFunction = function () {
+	        var match = this.matchContextualKeyword('async');
+	        if (match) {
+	            var previousIndex = this.scanner.index;
+	            var previousLineNumber = this.scanner.lineNumber;
+	            var previousLineStart = this.scanner.lineStart;
+	            this.collectComments();
+	            var next = this.scanner.lex();
+	            this.scanner.index = previousIndex;
+	            this.scanner.lineNumber = previousLineNumber;
+	            this.scanner.lineStart = previousLineStart;
+	            match = (previousLineNumber === next.lineNumber) && ((next.type === token_1.Token.Keyword) || (next.value === 'function'));
+	        }
+	        return match;
+	    };
+	    Parser.prototype.parseFunctionDeclaration = function (identifierIsOptional) {
+	        var node = this.createNode();
+	        var isAsync = this.matchContextualKeyword('async');
+	        if (isAsync) {
+	            this.nextToken();
+	        }
+	        this.expectKeyword('function');
+	        var isGenerator = isAsync ? false : this.match('*');
+	        if (isGenerator) {
+	            this.nextToken();
+	        }
+	        var message;
+	        var id = null;
+	        var firstRestricted = null;
+	        if (!identifierIsOptional || !this.match('(')) {
+	            var token = this.lookahead;
+	            id = this.parseVariableIdentifier();
+	            if (this.context.strict) {
+	                if (this.scanner.isRestrictedWord(token.value)) {
+	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);
+	                }
+	            }
+	            else {
+	                if (this.scanner.isRestrictedWord(token.value)) {
+	                    firstRestricted = token;
+	                    message = messages_1.Messages.StrictFunctionName;
+	                }
+	                else if (this.scanner.isStrictModeReservedWord(token.value)) {
+	                    firstRestricted = token;
+	                    message = messages_1.Messages.StrictReservedWord;
+	                }
+	            }
+	        }
+	        var previousAllowAwait = this.context.await;
+	        var previousAllowYield = this.context.allowYield;
+	        this.context.await = isAsync;
+	        this.context.allowYield = !isGenerator;
+	        var formalParameters = this.parseFormalParameters(firstRestricted);
+	        var params = formalParameters.params;
+	        var stricted = formalParameters.stricted;
+	        firstRestricted = formalParameters.firstRestricted;
+	        if (formalParameters.message) {
+	            message = formalParameters.message;
+	        }
+	        var previousStrict = this.context.strict;
+	        var body = this.parseFunctionSourceElements();
+	        if (this.context.strict && firstRestricted) {
+	            this.throwUnexpectedToken(firstRestricted, message);
+	        }
+	        if (this.context.strict && stricted) {
+	            this.tolerateUnexpectedToken(stricted, message);
+	        }
+	        this.context.strict = previousStrict;
+	        this.context.await = previousAllowAwait;
+	        this.context.allowYield = previousAllowYield;
+	        return isAsync ? this.finalize(node, new Node.AsyncFunctionDeclaration(id, params, body)) :
+	            this.finalize(node, new Node.FunctionDeclaration(id, params, body, isGenerator));
+	    };
+	    Parser.prototype.parseFunctionExpression = function () {
+	        var node = this.createNode();
+	        var isAsync = this.matchContextualKeyword('async');
+	        if (isAsync) {
+	            this.nextToken();
+	        }
+	        this.expectKeyword('function');
+	        var isGenerator = isAsync ? false : this.match('*');
+	        if (isGenerator) {
+	            this.nextToken();
+	        }
+	        var message;
+	        var id = null;
+	        var firstRestricted;
+	        var previousAllowAwait = this.context.await;
+	        var previousAllowYield = this.context.allowYield;
+	        this.context.await = isAsync;
+	        this.context.allowYield = !isGenerator;
+	        if (!this.match('(')) {
+	            var token = this.lookahead;
+	            id = (!this.context.strict && !isGenerator && this.matchKeyword('yield')) ? this.parseIdentifierName() : this.parseVariableIdentifier();
+	            if (this.context.strict) {
+	                if (this.scanner.isRestrictedWord(token.value)) {
+	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);
+	                }
+	            }
+	            else {
+	                if (this.scanner.isRestrictedWord(token.value)) {
+	                    firstRestricted = token;
+	                    message = messages_1.Messages.StrictFunctionName;
+	                }
+	                else if (this.scanner.isStrictModeReservedWord(token.value)) {
+	                    firstRestricted = token;
+	                    message = messages_1.Messages.StrictReservedWord;
+	                }
+	            }
+	        }
+	        var formalParameters = this.parseFormalParameters(firstRestricted);
+	        var params = formalParameters.params;
+	        var stricted = formalParameters.stricted;
+	        firstRestricted = formalParameters.firstRestricted;
+	        if (formalParameters.message) {
+	            message = formalParameters.message;
+	        }
+	        var previousStrict = this.context.strict;
+	        var body = this.parseFunctionSourceElements();
+	        if (this.context.strict && firstRestricted) {
+	            this.throwUnexpectedToken(firstRestricted, message);
+	        }
+	        if (this.context.strict && stricted) {
+	            this.tolerateUnexpectedToken(stricted, message);
+	        }
+	        this.context.strict = previousStrict;
+	        this.context.await = previousAllowAwait;
+	        this.context.allowYield = previousAllowYield;
+	        return isAsync ? this.finalize(node, new Node.AsyncFunctionExpression(id, params, body)) :
+	            this.finalize(node, new Node.FunctionExpression(id, params, body, isGenerator));
+	    };
+	    // ECMA-262 14.1.1 Directive Prologues
+	    Parser.prototype.parseDirective = function () {
+	        var token = this.lookahead;
+	        var node = this.createNode();
+	        var expr = this.parseExpression();
+	        var directive = (expr.type === syntax_1.Syntax.Literal) ? this.getTokenRaw(token).slice(1, -1) : null;
+	        this.consumeSemicolon();
+	        return this.finalize(node, directive ? new Node.Directive(expr, directive) : new Node.ExpressionStatement(expr));
+	    };
+	    Parser.prototype.parseDirectivePrologues = function () {
+	        var firstRestricted = null;
+	        var body = [];
+	        while (true) {
+	            var token = this.lookahead;
+	            if (token.type !== token_1.Token.StringLiteral) {
+	                break;
+	            }
+	            var statement = this.parseDirective();
+	            body.push(statement);
+	            var directive = statement.directive;
+	            if (typeof directive !== 'string') {
+	                break;
+	            }
+	            if (directive === 'use strict') {
+	                this.context.strict = true;
+	                if (firstRestricted) {
+	                    this.tolerateUnexpectedToken(firstRestricted, messages_1.Messages.StrictOctalLiteral);
+	                }
+	            }
+	            else {
+	                if (!firstRestricted && token.octal) {
+	                    firstRestricted = token;
+	                }
+	            }
+	        }
+	        return body;
+	    };
+	    // ECMA-262 14.3 Method Definitions
+	    Parser.prototype.qualifiedPropertyName = function (token) {
+	        switch (token.type) {
+	            case token_1.Token.Identifier:
+	            case token_1.Token.StringLiteral:
+	            case token_1.Token.BooleanLiteral:
+	            case token_1.Token.NullLiteral:
+	            case token_1.Token.NumericLiteral:
+	            case token_1.Token.Keyword:
+	                return true;
+	            case token_1.Token.Punctuator:
+	                return token.value === '[';
+	        }
+	        return false;
+	    };
+	    Parser.prototype.parseGetterMethod = function () {
+	        var node = this.createNode();
+	        this.expect('(');
+	        this.expect(')');
+	        var isGenerator = false;
+	        var params = {
+	            params: [],
+	            stricted: null,
+	            firstRestricted: null,
+	            message: null
+	        };
+	        var previousAllowYield = this.context.allowYield;
+	        this.context.allowYield = false;
+	        var method = this.parsePropertyMethod(params);
+	        this.context.allowYield = previousAllowYield;
+	        return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));
+	    };
+	    Parser.prototype.parseSetterMethod = function () {
+	        var node = this.createNode();
+	        var options = {
+	            params: [],
+	            firstRestricted: null,
+	            paramSet: {}
+	        };
+	        var isGenerator = false;
+	        var previousAllowYield = this.context.allowYield;
+	        this.context.allowYield = false;
+	        this.expect('(');
+	        if (this.match(')')) {
+	            this.tolerateUnexpectedToken(this.lookahead);
+	        }
+	        else {
+	            this.parseFormalParameter(options);
+	        }
+	        this.expect(')');
+	        var method = this.parsePropertyMethod(options);
+	        this.context.allowYield = previousAllowYield;
+	        return this.finalize(node, new Node.FunctionExpression(null, options.params, method, isGenerator));
+	    };
+	    Parser.prototype.parseGeneratorMethod = function () {
+	        var node = this.createNode();
+	        var isGenerator = true;
+	        var previousAllowYield = this.context.allowYield;
+	        this.context.allowYield = true;
+	        var params = this.parseFormalParameters();
+	        this.context.allowYield = false;
+	        var method = this.parsePropertyMethod(params);
+	        this.context.allowYield = previousAllowYield;
+	        return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));
+	    };
+	    // ECMA-262 14.4 Generator Function Definitions
+	    Parser.prototype.parseYieldExpression = function () {
+	        var node = this.createNode();
+	        this.expectKeyword('yield');
+	        var argument = null;
+	        var delegate = false;
+	        if (!this.hasLineTerminator) {
+	            var previousAllowYield = this.context.allowYield;
+	            this.context.allowYield = false;
+	            delegate = this.match('*');
+	            if (delegate) {
+	                this.nextToken();
+	                argument = this.parseAssignmentExpression();
+	            }
+	            else {
+	                if (!this.match(';') && !this.match('}') && !this.match(')') && this.lookahead.type !== token_1.Token.EOF) {
+	                    argument = this.parseAssignmentExpression();
+	                }
+	            }
+	            this.context.allowYield = previousAllowYield;
+	        }
+	        return this.finalize(node, new Node.YieldExpression(argument, delegate));
+	    };
+	    // ECMA-262 14.5 Class Definitions
+	    Parser.prototype.parseClassElement = function (hasConstructor) {
+	        var token = this.lookahead;
+	        var node = this.createNode();
+	        var kind = '';
+	        var key = null;
+	        var value = null;
+	        var computed = false;
+	        var method = false;
+	        var isStatic = false;
+	        var isAsync = false;
+	        if (this.match('*')) {
+	            this.nextToken();
+	        }
+	        else {
+	            computed = this.match('[');
+	            key = this.parseObjectPropertyKey();
+	            var id = key;
+	            if (id.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*'))) {
+	                token = this.lookahead;
+	                isStatic = true;
+	                computed = this.match('[');
+	                if (this.match('*')) {
+	                    this.nextToken();
+	                }
+	                else {
+	                    key = this.parseObjectPropertyKey();
+	                }
+	            }
+	            isAsync = (token.type === token_1.Token.Identifier) && !this.hasLineTerminator && (this.lookahead.type === token_1.Token.Identifier) && (token.value === 'async');
+	            if (isAsync) {
+	                token = this.lookahead;
+	                key = this.parseObjectPropertyKey();
+	                if (token.type === token_1.Token.Identifier && ['get', 'set', 'constructor'].indexOf(token.value) >= 0) {
+	                    this.tolerateUnexpectedToken(token);
+	                }
+	            }
+	        }
+	        var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);
+	        if (token.type === token_1.Token.Identifier) {
+	            if (token.value === 'get' && lookaheadPropertyKey) {
+	                kind = 'get';
+	                computed = this.match('[');
+	                key = this.parseObjectPropertyKey();
+	                this.context.allowYield = false;
+	                value = this.parseGetterMethod();
+	            }
+	            else if (token.value === 'set' && lookaheadPropertyKey) {
+	                kind = 'set';
+	                computed = this.match('[');
+	                key = this.parseObjectPropertyKey();
+	                value = this.parseSetterMethod();
+	            }
+	        }
+	        else if (token.type === token_1.Token.Punctuator && token.value === '*' && lookaheadPropertyKey) {
+	            kind = 'init';
+	            computed = this.match('[');
+	            key = this.parseObjectPropertyKey();
+	            value = this.parseGeneratorMethod();
+	            method = true;
+	        }
+	        if (!kind && key && this.match('(')) {
+	            kind = 'init';
+	            value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();
+	            method = true;
+	        }
+	        if (!kind) {
+	            this.throwUnexpectedToken(this.lookahead);
+	        }
+	        if (kind === 'init') {
+	            kind = 'method';
+	        }
+	        if (!computed) {
+	            if (isStatic && this.isPropertyKey(key, 'prototype')) {
+	                this.throwUnexpectedToken(token, messages_1.Messages.StaticPrototype);
+	            }
+	            if (!isStatic && this.isPropertyKey(key, 'constructor')) {
+	                if (kind !== 'method' || !method || (value && value.generator)) {
+	                    this.throwUnexpectedToken(token, messages_1.Messages.ConstructorSpecialMethod);
+	                }
+	                if (hasConstructor.value) {
+	                    this.throwUnexpectedToken(token, messages_1.Messages.DuplicateConstructor);
+	                }
+	                else {
+	                    hasConstructor.value = true;
+	                }
+	                kind = 'constructor';
+	            }
+	        }
+	        return this.finalize(node, new Node.MethodDefinition(key, computed, value, kind, isStatic));
+	    };
+	    Parser.prototype.parseClassElementList = function () {
+	        var body = [];
+	        var hasConstructor = { value: false };
+	        this.expect('{');
+	        while (!this.match('}')) {
+	            if (this.match(';')) {
+	                this.nextToken();
+	            }
+	            else {
+	                body.push(this.parseClassElement(hasConstructor));
+	            }
+	        }
+	        this.expect('}');
+	        return body;
+	    };
+	    Parser.prototype.parseClassBody = function () {
+	        var node = this.createNode();
+	        var elementList = this.parseClassElementList();
+	        return this.finalize(node, new Node.ClassBody(elementList));
+	    };
+	    Parser.prototype.parseClassDeclaration = function (identifierIsOptional) {
+	        var node = this.createNode();
+	        var previousStrict = this.context.strict;
+	        this.context.strict = true;
+	        this.expectKeyword('class');
+	        var id = (identifierIsOptional && (this.lookahead.type !== token_1.Token.Identifier)) ? null : this.parseVariableIdentifier();
+	        var superClass = null;
+	        if (this.matchKeyword('extends')) {
+	            this.nextToken();
+	            superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
+	        }
+	        var classBody = this.parseClassBody();
+	        this.context.strict = previousStrict;
+	        return this.finalize(node, new Node.ClassDeclaration(id, superClass, classBody));
+	    };
+	    Parser.prototype.parseClassExpression = function () {
+	        var node = this.createNode();
+	        var previousStrict = this.context.strict;
+	        this.context.strict = true;
+	        this.expectKeyword('class');
+	        var id = (this.lookahead.type === token_1.Token.Identifier) ? this.parseVariableIdentifier() : null;
+	        var superClass = null;
+	        if (this.matchKeyword('extends')) {
+	            this.nextToken();
+	            superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
+	        }
+	        var classBody = this.parseClassBody();
+	        this.context.strict = previousStrict;
+	        return this.finalize(node, new Node.ClassExpression(id, superClass, classBody));
+	    };
+	    // ECMA-262 15.1 Scripts
+	    // ECMA-262 15.2 Modules
+	    Parser.prototype.parseModule = function () {
+	        this.context.strict = true;
+	        this.context.isModule = true;
+	        var node = this.createNode();
+	        var body = this.parseDirectivePrologues();
+	        while (this.startMarker.index < this.scanner.length) {
+	            body.push(this.parseStatementListItem());
+	        }
+	        return this.finalize(node, new Node.Module(body));
+	    };
+	    Parser.prototype.parseScript = function () {
+	        var node = this.createNode();
+	        var body = this.parseDirectivePrologues();
+	        while (this.startMarker.index < this.scanner.length) {
+	            body.push(this.parseStatementListItem());
+	        }
+	        return this.finalize(node, new Node.Script(body));
+	    };
+	    // ECMA-262 15.2.2 Imports
+	    Parser.prototype.parseModuleSpecifier = function () {
+	        var node = this.createNode();
+	        if (this.lookahead.type !== token_1.Token.StringLiteral) {
+	            this.throwError(messages_1.Messages.InvalidModuleSpecifier);
+	        }
+	        var token = this.nextToken();
+	        var raw = this.getTokenRaw(token);
+	        return this.finalize(node, new Node.Literal(token.value, raw));
+	    };
+	    // import {<foo as bar>} ...;
+	    Parser.prototype.parseImportSpecifier = function () {
+	        var node = this.createNode();
+	        var imported;
+	        var local;
+	        if (this.lookahead.type === token_1.Token.Identifier) {
+	            imported = this.parseVariableIdentifier();
+	            local = imported;
+	            if (this.matchContextualKeyword('as')) {
+	                this.nextToken();
+	                local = this.parseVariableIdentifier();
+	            }
+	        }
+	        else {
+	            imported = this.parseIdentifierName();
+	            local = imported;
+	            if (this.matchContextualKeyword('as')) {
+	                this.nextToken();
+	                local = this.parseVariableIdentifier();
+	            }
+	            else {
+	                this.throwUnexpectedToken(this.nextToken());
+	            }
+	        }
+	        return this.finalize(node, new Node.ImportSpecifier(local, imported));
+	    };
+	    // {foo, bar as bas}
+	    Parser.prototype.parseNamedImports = function () {
+	        this.expect('{');
+	        var specifiers = [];
+	        while (!this.match('}')) {
+	            specifiers.push(this.parseImportSpecifier());
+	            if (!this.match('}')) {
+	                this.expect(',');
+	            }
+	        }
+	        this.expect('}');
+	        return specifiers;
+	    };
+	    // import <foo> ...;
+	    Parser.prototype.parseImportDefaultSpecifier = function () {
+	        var node = this.createNode();
+	        var local = this.parseIdentifierName();
+	        return this.finalize(node, new Node.ImportDefaultSpecifier(local));
+	    };
+	    // import <* as foo> ...;
+	    Parser.prototype.parseImportNamespaceSpecifier = function () {
+	        var node = this.createNode();
+	        this.expect('*');
+	        if (!this.matchContextualKeyword('as')) {
+	            this.throwError(messages_1.Messages.NoAsAfterImportNamespace);
+	        }
+	        this.nextToken();
+	        var local = this.parseIdentifierName();
+	        return this.finalize(node, new Node.ImportNamespaceSpecifier(local));
+	    };
+	    Parser.prototype.parseImportDeclaration = function () {
+	        if (this.context.inFunctionBody) {
+	            this.throwError(messages_1.Messages.IllegalImportDeclaration);
+	        }
+	        var node = this.createNode();
+	        this.expectKeyword('import');
+	        var src;
+	        var specifiers = [];
+	        if (this.lookahead.type === token_1.Token.StringLiteral) {
+	            // import 'foo';
+	            src = this.parseModuleSpecifier();
+	        }
+	        else {
+	            if (this.match('{')) {
+	                // import {bar}
+	                specifiers = specifiers.concat(this.parseNamedImports());
+	            }
+	            else if (this.match('*')) {
+	                // import * as foo
+	                specifiers.push(this.parseImportNamespaceSpecifier());
+	            }
+	            else if (this.isIdentifierName(this.lookahead) && !this.matchKeyword('default')) {
+	                // import foo
+	                specifiers.push(this.parseImportDefaultSpecifier());
+	                if (this.match(',')) {
+	                    this.nextToken();
+	                    if (this.match('*')) {
+	                        // import foo, * as foo
+	                        specifiers.push(this.parseImportNamespaceSpecifier());
+	                    }
+	                    else if (this.match('{')) {
+	                        // import foo, {bar}
+	                        specifiers = specifiers.concat(this.parseNamedImports());
+	                    }
+	                    else {
+	                        this.throwUnexpectedToken(this.lookahead);
+	                    }
+	                }
+	            }
+	            else {
+	                this.throwUnexpectedToken(this.nextToken());
+	            }
+	            if (!this.matchContextualKeyword('from')) {
+	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
+	                this.throwError(message, this.lookahead.value);
+	            }
+	            this.nextToken();
+	            src = this.parseModuleSpecifier();
+	        }
+	        this.consumeSemicolon();
+	        return this.finalize(node, new Node.ImportDeclaration(specifiers, src));
+	    };
+	    // ECMA-262 15.2.3 Exports
+	    Parser.prototype.parseExportSpecifier = function () {
+	        var node = this.createNode();
+	        var local = this.parseIdentifierName();
+	        var exported = local;
+	        if (this.matchContextualKeyword('as')) {
+	            this.nextToken();
+	            exported = this.parseIdentifierName();
+	        }
+	        return this.finalize(node, new Node.ExportSpecifier(local, exported));
+	    };
+	    Parser.prototype.parseExportDeclaration = function () {
+	        if (this.context.inFunctionBody) {
+	            this.throwError(messages_1.Messages.IllegalExportDeclaration);
+	        }
+	        var node = this.createNode();
+	        this.expectKeyword('export');
+	        var exportDeclaration;
+	        if (this.matchKeyword('default')) {
+	            // export default ...
+	            this.nextToken();
+	            if (this.matchKeyword('function')) {
+	                // export default function foo () {}
+	                // export default function () {}
+	                var declaration = this.parseFunctionDeclaration(true);
+	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
+	            }
+	            else if (this.matchKeyword('class')) {
+	                // export default class foo {}
+	                var declaration = this.parseClassDeclaration(true);
+	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
+	            }
+	            else {
+	                if (this.matchContextualKeyword('from')) {
+	                    this.throwError(messages_1.Messages.UnexpectedToken, this.lookahead.value);
+	                }
+	                // export default {};
+	                // export default [];
+	                // export default (1 + 2);
+	                var declaration = this.match('{') ? this.parseObjectInitializer() :
+	                    this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression();
+	                this.consumeSemicolon();
+	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
+	            }
+	        }
+	        else if (this.match('*')) {
+	            // export * from 'foo';
+	            this.nextToken();
+	            if (!this.matchContextualKeyword('from')) {
+	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
+	                this.throwError(message, this.lookahead.value);
+	            }
+	            this.nextToken();
+	            var src = this.parseModuleSpecifier();
+	            this.consumeSemicolon();
+	            exportDeclaration = this.finalize(node, new Node.ExportAllDeclaration(src));
+	        }
+	        else if (this.lookahead.type === token_1.Token.Keyword) {
+	            // export var f = 1;
+	            var declaration = void 0;
+	            switch (this.lookahead.value) {
+	                case 'let':
+	                case 'const':
+	                    declaration = this.parseLexicalDeclaration({ inFor: false });
+	                    break;
+	                case 'var':
+	                case 'class':
+	                case 'function':
+	                    declaration = this.parseStatementListItem();
+	                    break;
+	                default:
+	                    this.throwUnexpectedToken(this.lookahead);
+	            }
+	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));
+	        }
+	        else if (this.matchAsyncFunction()) {
+	            var declaration = this.parseFunctionDeclaration();
+	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));
+	        }
+	        else {
+	            var specifiers = [];
+	            var source = null;
+	            var isExportFromIdentifier = false;
+	            this.expect('{');
+	            while (!this.match('}')) {
+	                isExportFromIdentifier = isExportFromIdentifier || this.matchKeyword('default');
+	                specifiers.push(this.parseExportSpecifier());
+	                if (!this.match('}')) {
+	                    this.expect(',');
+	                }
+	            }
+	            this.expect('}');
+	            if (this.matchContextualKeyword('from')) {
+	                // export {default} from 'foo';
+	                // export {foo} from 'foo';
+	                this.nextToken();
+	                source = this.parseModuleSpecifier();
+	                this.consumeSemicolon();
+	            }
+	            else if (isExportFromIdentifier) {
+	                // export {default}; // missing fromClause
+	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
+	                this.throwError(message, this.lookahead.value);
+	            }
+	            else {
+	                // export {foo};
+	                this.consumeSemicolon();
+	            }
+	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(null, specifiers, source));
+	        }
+	        return exportDeclaration;
+	    };
+	    return Parser;
+	}());
+	exports.Parser = Parser;
+
+
+/***/ },
+/* 4 */
+/***/ function(module, exports) {
+
+	// Ensure the condition is true, otherwise throw an error.
+	// This is only to have a better contract semantic, i.e. another safety net
+	// to catch a logic error. The condition shall be fulfilled in normal case.
+	// Do NOT use this to enforce a certain condition on any user input.
+	"use strict";
+	function assert(condition, message) {
+	    /* istanbul ignore if */
+	    if (!condition) {
+	        throw new Error('ASSERT: ' + message);
+	    }
+	}
+	exports.assert = assert;
+
+
+/***/ },
+/* 5 */
+/***/ function(module, exports) {
+
+	"use strict";
+	// Error messages should be identical to V8.
+	exports.Messages = {
+	    UnexpectedToken: 'Unexpected token %0',
+	    UnexpectedTokenIllegal: 'Unexpected token ILLEGAL',
+	    UnexpectedNumber: 'Unexpected number',
+	    UnexpectedString: 'Unexpected string',
+	    UnexpectedIdentifier: 'Unexpected identifier',
+	    UnexpectedReserved: 'Unexpected reserved word',
+	    UnexpectedTemplate: 'Unexpected quasi %0',
+	    UnexpectedEOS: 'Unexpected end of input',
+	    NewlineAfterThrow: 'Illegal newline after throw',
+	    InvalidRegExp: 'Invalid regular expression',
+	    UnterminatedRegExp: 'Invalid regular expression: missing /',
+	    InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
+	    InvalidLHSInForIn: 'Invalid left-hand side in for-in',
+	    InvalidLHSInForLoop: 'Invalid left-hand side in for-loop',
+	    MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
+	    NoCatchOrFinally: 'Missing catch or finally after try',
+	    UnknownLabel: 'Undefined label \'%0\'',
+	    Redeclaration: '%0 \'%1\' has already been declared',
+	    IllegalContinue: 'Illegal continue statement',
+	    IllegalBreak: 'Illegal break statement',
+	    IllegalReturn: 'Illegal return statement',
+	    StrictModeWith: 'Strict mode code may not include a with statement',
+	    StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
+	    StrictVarName: 'Variable name may not be eval or arguments in strict mode',
+	    StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
+	    StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
+	    StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
+	    StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
+	    StrictDelete: 'Delete of an unqualified identifier in strict mode.',
+	    StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
+	    StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
+	    StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
+	    StrictReservedWord: 'Use of future reserved word in strict mode',
+	    TemplateOctalLiteral: 'Octal literals are not allowed in template strings.',
+	    ParameterAfterRestParameter: 'Rest parameter must be last formal parameter',
+	    DefaultRestParameter: 'Unexpected token =',
+	    ObjectPatternAsRestParameter: 'Unexpected token {',
+	    DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals',
+	    ConstructorSpecialMethod: 'Class constructor may not be an accessor',
+	    DuplicateConstructor: 'A class may only have one constructor',
+	    StaticPrototype: 'Classes may not have static property named prototype',
+	    MissingFromClause: 'Unexpected token',
+	    NoAsAfterImportNamespace: 'Unexpected token',
+	    InvalidModuleSpecifier: 'Unexpected token',
+	    IllegalImportDeclaration: 'Unexpected token',
+	    IllegalExportDeclaration: 'Unexpected token',
+	    DuplicateBinding: 'Duplicate binding %0',
+	    DeclarationMissingInitializer: 'Missing initializer in %0 declaration',
+	    LetInLexicalBinding: 'let is disallowed as a lexically bound name',
+	    ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer'
+	};
+
+
+/***/ },
+/* 6 */
+/***/ function(module, exports) {
+
+	"use strict";
+	var ErrorHandler = (function () {
+	    function ErrorHandler() {
+	        this.errors = [];
+	        this.tolerant = false;
+	    }
+	    ;
+	    ErrorHandler.prototype.recordError = function (error) {
+	        this.errors.push(error);
+	    };
+	    ;
+	    ErrorHandler.prototype.tolerate = function (error) {
+	        if (this.tolerant) {
+	            this.recordError(error);
+	        }
+	        else {
+	            throw error;
+	        }
+	    };
+	    ;
+	    ErrorHandler.prototype.constructError = function (msg, column) {
+	        var error = new Error(msg);
+	        try {
+	            throw error;
+	        }
+	        catch (base) {
+	            /* istanbul ignore else */
+	            if (Object.create && Object.defineProperty) {
+	                error = Object.create(base);
+	                Object.defineProperty(error, 'column', { value: column });
+	            }
+	        }
+	        finally {
+	            return error;
+	        }
+	        /* istanbul ignore next */
+	        return error;
+	    };
+	    ;
+	    ErrorHandler.prototype.createError = function (index, line, col, description) {
+	        var msg = 'Line ' + line + ': ' + description;
+	        var error = this.constructError(msg, col);
+	        error.index = index;
+	        error.lineNumber = line;
+	        error.description = description;
+	        return error;
+	    };
+	    ;
+	    ErrorHandler.prototype.throwError = function (index, line, col, description) {
+	        throw this.createError(index, line, col, description);
+	    };
+	    ;
+	    ErrorHandler.prototype.tolerateError = function (index, line, col, description) {
+	        var error = this.createError(index, line, col, description);
+	        if (this.tolerant) {
+	            this.recordError(error);
+	        }
+	        else {
+	            throw error;
+	        }
+	    };
+	    ;
+	    return ErrorHandler;
+	}());
+	exports.ErrorHandler = ErrorHandler;
+
+
+/***/ },
+/* 7 */
+/***/ function(module, exports) {
+
+	"use strict";
+	(function (Token) {
+	    Token[Token["BooleanLiteral"] = 1] = "BooleanLiteral";
+	    Token[Token["EOF"] = 2] = "EOF";
+	    Token[Token["Identifier"] = 3] = "Identifier";
+	    Token[Token["Keyword"] = 4] = "Keyword";
+	    Token[Token["NullLiteral"] = 5] = "NullLiteral";
+	    Token[Token["NumericLiteral"] = 6] = "NumericLiteral";
+	    Token[Token["Punctuator"] = 7] = "Punctuator";
+	    Token[Token["StringLiteral"] = 8] = "StringLiteral";
+	    Token[Token["RegularExpression"] = 9] = "RegularExpression";
+	    Token[Token["Template"] = 10] = "Template";
+	})(exports.Token || (exports.Token = {}));
+	var Token = exports.Token;
+	;
+	exports.TokenName = {};
+	exports.TokenName[Token.BooleanLiteral] = 'Boolean';
+	exports.TokenName[Token.EOF] = '<end>';
+	exports.TokenName[Token.Identifier] = 'Identifier';
+	exports.TokenName[Token.Keyword] = 'Keyword';
+	exports.TokenName[Token.NullLiteral] = 'Null';
+	exports.TokenName[Token.NumericLiteral] = 'Numeric';
+	exports.TokenName[Token.Punctuator] = 'Punctuator';
+	exports.TokenName[Token.StringLiteral] = 'String';
+	exports.TokenName[Token.RegularExpression] = 'RegularExpression';
+	exports.TokenName[Token.Template] = 'Template';
+
+
+/***/ },
+/* 8 */
+/***/ function(module, exports, __webpack_require__) {
+
+	"use strict";
+	var assert_1 = __webpack_require__(4);
+	var messages_1 = __webpack_require__(5);
+	var character_1 = __webpack_require__(9);
+	var token_1 = __webpack_require__(7);
+	function hexValue(ch) {
+	    return '0123456789abcdef'.indexOf(ch.toLowerCase());
+	}
+	function octalValue(ch) {
+	    return '01234567'.indexOf(ch);
+	}
+	var Scanner = (function () {
+	    function Scanner(code, handler) {
+	        this.source = code;
+	        this.errorHandler = handler;
+	        this.trackComment = false;
+	        this.length = code.length;
+	        this.index = 0;
+	        this.lineNumber = (code.length > 0) ? 1 : 0;
+	        this.lineStart = 0;
+	        this.curlyStack = [];
+	    }
+	    ;
+	    Scanner.prototype.eof = function () {
+	        return this.index >= this.length;
+	    };
+	    ;
+	    Scanner.prototype.throwUnexpectedToken = function (message) {
+	        if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; }
+	        this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, message);
+	    };
+	    ;
+	    Scanner.prototype.tolerateUnexpectedToken = function () {
+	        this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, messages_1.Messages.UnexpectedTokenIllegal);
+	    };
+	    ;
+	    // ECMA-262 11.4 Comments
+	    Scanner.prototype.skipSingleLineComment = function (offset) {
+	        var comments = [];
+	        var start, loc;
+	        if (this.trackComment) {
+	            comments = [];
+	            start = this.index - offset;
+	            loc = {
+	                start: {
+	                    line: this.lineNumber,
+	                    column: this.index - this.lineStart - offset
+	                },
+	                end: {}
+	            };
+	        }
+	        while (!this.eof()) {
+	            var ch = this.source.charCodeAt(this.index);
+	            ++this.index;
+	            if (character_1.Character.isLineTerminator(ch)) {
+	                if (this.trackComment) {
+	                    loc.end = {
+	                        line: this.lineNumber,
+	                        column: this.index - this.lineStart - 1
+	                    };
+	                    var entry = {
+	                        multiLine: false,
+	                        slice: [start + offset, this.index - 1],
+	                        range: [start, this.index - 1],
+	                        loc: loc
+	                    };
+	                    comments.push(entry);
+	                }
+	                if (ch === 13 && this.source.charCodeAt(this.index) === 10) {
+	                    ++this.index;
+	                }
+	                ++this.lineNumber;
+	                this.lineStart = this.index;
+	                return comments;
+	            }
+	        }
+	        if (this.trackComment) {
+	            loc.end = {
+	                line: this.lineNumber,
+	                column: this.index - this.lineStart
+	            };
+	            var entry = {
+	                multiLine: false,
+	                slice: [start + offset, this.index],
+	                range: [start, this.index],
+	                loc: loc
+	            };
+	            comments.push(entry);
+	        }
+	        return comments;
+	    };
+	    ;
+	    Scanner.prototype.skipMultiLineComment = function () {
+	        var comments = [];
+	        var start, loc;
+	        if (this.trackComment) {
+	            comments = [];
+	            start = this.index - 2;
+	            loc = {
+	                start: {
+	                    line: this.lineNumber,
+	                    column: this.index - this.lineStart - 2
+	                },
+	                end: {}
+	            };
+	        }
+	        while (!this.eof()) {
+	            var ch = this.source.charCodeAt(this.index);
+	            if (character_1.Character.isLineTerminator(ch)) {
+	                if (ch === 0x0D && this.source.charCodeAt(this.index + 1) === 0x0A) {
+	                    ++this.index;
+	                }
+	                ++this.lineNumber;
+	                ++this.index;
+	                this.lineStart = this.index;
+	            }
+	            else if (ch === 0x2A) {
+	                // Block comment ends with '*/'.
+	                if (this.source.charCodeAt(this.index + 1) === 0x2F) {
+	                    this.index += 2;
+	                    if (this.trackComment) {
+	                        loc.end = {
+	                            line: this.lineNumber,
+	                            column: this.index - this.lineStart
+	                        };
+	                        var entry = {
+	                            multiLine: true,
+	                            slice: [start + 2, this.index - 2],
+	                            range: [start, this.index],
+	                            loc: loc
+	                        };
+	                        comments.push(entry);
+	                    }
+	                    return comments;
+	                }
+	                ++this.index;
+	            }
+	            else {
+	                ++this.index;
+	            }
+	        }
+	        // Ran off the end of the file - the whole thing is a comment
+	        if (this.trackComment) {
+	            loc.end = {
+	                line: this.lineNumber,
+	                column: this.index - this.lineStart
+	            };
+	            var entry = {
+	                multiLine: true,
+	                slice: [start + 2, this.index],
+	                range: [start, this.index],
+	                loc: loc
+	            };
+	            comments.push(entry);
+	        }
+	        this.tolerateUnexpectedToken();
+	        return comments;
+	    };
+	    ;
+	    Scanner.prototype.scanComments = function () {
+	        var comments;
+	        if (this.trackComment) {
+	            comments = [];
+	        }
+	        var start = (this.index === 0);
+	        while (!this.eof()) {
+	            var ch = this.source.charCodeAt(this.index);
+	            if (character_1.Character.isWhiteSpace(ch)) {
+	                ++this.index;
+	            }
+	            else if (character_1.Character.isLineTerminator(ch)) {
+	                ++this.index;
+	                if (ch === 0x0D && this.source.charCodeAt(this.index) === 0x0A) {
+	                    ++this.index;
+	                }
+	                ++this.lineNumber;
+	                this.lineStart = this.index;
+	                start = true;
+	            }
+	            else if (ch === 0x2F) {
+	                ch = this.source.charCodeAt(this.index + 1);
+	                if (ch === 0x2F) {
+	                    this.index += 2;
+	                    var comment = this.skipSingleLineComment(2);
+	                    if (this.trackComment) {
+	                        comments = comments.concat(comment);
+	                    }
+	                    start = true;
+	                }
+	                else if (ch === 0x2A) {
+	                    this.index += 2;
+	                    var comment = this.skipMultiLineComment();
+	                    if (this.trackComment) {
+	                        comments = comments.concat(comment);
+	                    }
+	                }
+	                else {
+	                    break;
+	                }
+	            }
+	            else if (start && ch === 0x2D) {
+	                // U+003E is '>'
+	                if ((this.source.charCodeAt(this.index + 1) === 0x2D) && (this.source.charCodeAt(this.index + 2) === 0x3E)) {
+	                    // '-->' is a single-line comment
+	                    this.index += 3;
+	                    var comment = this.skipSingleLineComment(3);
+	                    if (this.trackComment) {
+	                        comments = comments.concat(comment);
+	                    }
+	                }
+	                else {
+	                    break;
+	                }
+	            }
+	            else if (ch === 0x3C) {
+	                if (this.source.slice(this.index + 1, this.index + 4) === '!--') {
+	                    this.index += 4; // `<!--`
+	                    var comment = this.skipSingleLineComment(4);
+	                    if (this.trackComment) {
+	                        comments = comments.concat(comment);
+	                    }
+	                }
+	                else {
+	                    break;
+	                }
+	            }
+	            else {
+	                break;
+	            }
+	        }
+	        return comments;
+	    };
+	    ;
+	    // ECMA-262 11.6.2.2 Future Reserved Words
+	    Scanner.prototype.isFutureReservedWord = function (id) {
+	        switch (id) {
+	            case 'enum':
+	            case 'export':
+	            case 'import':
+	            case 'super':
+	                return true;
+	            default:
+	                return false;
+	        }
+	    };
+	    ;
+	    Scanner.prototype.isStrictModeReservedWord = function (id) {
+	        switch (id) {
+	            case 'implements':
+	            case 'interface':
+	            case 'package':
+	            case 'private':
+	            case 'protected':
+	            case 'public':
+	            case 'static':
+	            case 'yield':
+	            case 'let':
+	                return true;
+	            default:
+	                return false;
+	        }
+	    };
+	    ;
+	    Scanner.prototype.isRestrictedWord = function (id) {
+	        return id === 'eval' || id === 'arguments';
+	    };
+	    ;
+	    // ECMA-262 11.6.2.1 Keywords
+	    Scanner.prototype.isKeyword = function (id) {
+	        switch (id.length) {
+	            case 2:
+	                return (id === 'if') || (id === 'in') || (id === 'do');
+	            case 3:
+	                return (id === 'var') || (id === 'for') || (id === 'new') ||
+	                    (id === 'try') || (id === 'let');
+	            case 4:
+	                return (id === 'this') || (id === 'else') || (id === 'case') ||
+	                    (id === 'void') || (id === 'with') || (id === 'enum');
+	            case 5:
+	                return (id === 'while') || (id === 'break') || (id === 'catch') ||
+	                    (id === 'throw') || (id === 'const') || (id === 'yield') ||
+	                    (id === 'class') || (id === 'super');
+	            case 6:
+	                return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
+	                    (id === 'switch') || (id === 'export') || (id === 'import');
+	            case 7:
+	                return (id === 'default') || (id === 'finally') || (id === 'extends');
+	            case 8:
+	                return (id === 'function') || (id === 'continue') || (id === 'debugger');
+	            case 10:
+	                return (id === 'instanceof');
+	            default:
+	                return false;
+	        }
+	    };
+	    ;
+	    Scanner.prototype.codePointAt = function (i) {
+	        var cp = this.source.charCodeAt(i);
+	        if (cp >= 0xD800 && cp <= 0xDBFF) {
+	            var second = this.source.charCodeAt(i + 1);
+	            if (second >= 0xDC00 && second <= 0xDFFF) {
+	                var first = cp;
+	                cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
+	            }
+	        }
+	        return cp;
+	    };
+	    ;
+	    Scanner.prototype.scanHexEscape = function (prefix) {
+	        var len = (prefix === 'u') ? 4 : 2;
+	        var code = 0;
+	        for (var i = 0; i < len; ++i) {
+	            if (!this.eof() && character_1.Character.isHexDigit(this.source.charCodeAt(this.index))) {
+	                code = code * 16 + hexValue(this.source[this.index++]);
+	            }
+	            else {
+	                return '';
+	            }
+	        }
+	        return String.fromCharCode(code);
+	    };
+	    ;
+	    Scanner.prototype.scanUnicodeCodePointEscape = function () {
+	        var ch = this.source[this.index];
+	        var code = 0;
+	        // At least, one hex digit is required.
+	        if (ch === '}') {
+	            this.throwUnexpectedToken();
+	        }
+	        while (!this.eof()) {
+	            ch = this.source[this.index++];
+	            if (!character_1.Character.isHexDigit(ch.charCodeAt(0))) {
+	                break;
+	            }
+	            code = code * 16 + hexValue(ch);
+	        }
+	        if (code > 0x10FFFF || ch !== '}') {
+	            this.throwUnexpectedToken();
+	        }
+	        return character_1.Character.fromCodePoint(code);
+	    };
+	    ;
+	    Scanner.prototype.getIdentifier = function () {
+	        var start = this.index++;
+	        while (!this.eof()) {
+	            var ch = this.source.charCodeAt(this.index);
+	            if (ch === 0x5C) {
+	                // Blackslash (U+005C) marks Unicode escape sequence.
+	                this.index = start;
+	                return this.getComplexIdentifier();
+	            }
+	            else if (ch >= 0xD800 && ch < 0xDFFF) {
+	                // Need to handle surrogate pairs.
+	                this.index = start;
+	                return this.getComplexIdentifier();
+	            }
+	            if (character_1.Character.isIdentifierPart(ch)) {
+	                ++this.index;
+	            }
+	            else {
+	                break;
+	            }
+	        }
+	        return this.source.slice(start, this.index);
+	    };
+	    ;
+	    Scanner.prototype.getComplexIdentifier = function () {
+	        var cp = this.codePointAt(this.index);
+	        var id = character_1.Character.fromCodePoint(cp);
+	        this.index += id.length;
+	        // '\u' (U+005C, U+0075) denotes an escaped character.
+	        var ch;
+	        if (cp === 0x5C) {
+	            if (this.source.charCodeAt(this.index) !== 0x75) {
+	                this.throwUnexpectedToken();
+	            }
+	            ++this.index;
+	            if (this.source[this.index] === '{') {
+	                ++this.index;
+	                ch = this.scanUnicodeCodePointEscape();
+	            }
+	            else {
+	                ch = this.scanHexEscape('u');
+	                cp = ch.charCodeAt(0);
+	                if (!ch || ch === '\\' || !character_1.Character.isIdentifierStart(cp)) {
+	                    this.throwUnexpectedToken();
+	                }
+	            }
+	            id = ch;
+	        }
+	        while (!this.eof()) {
+	            cp = this.codePointAt(this.index);
+	            if (!character_1.Character.isIdentifierPart(cp)) {
+	                break;
+	            }
+	            ch = character_1.Character.fromCodePoint(cp);
+	            id += ch;
+	            this.index += ch.length;
+	            // '\u' (U+005C, U+0075) denotes an escaped character.
+	            if (cp === 0x5C) {
+	                id = id.substr(0, id.length - 1);
+	                if (this.source.charCodeAt(this.index) !== 0x75) {
+	                    this.throwUnexpectedToken();
+	                }
+	                ++this.index;
+	                if (this.source[this.index] === '{') {
+	                    ++this.index;
+	                    ch = this.scanUnicodeCodePointEscape();
+	                }
+	                else {
+	                    ch = this.scanHexEscape('u');
+	                    cp = ch.charCodeAt(0);
+	                    if (!ch || ch === '\\' || !character_1.Character.isIdentifierPart(cp)) {
+	                        this.throwUnexpectedToken();
+	                    }
+	                }
+	                id += ch;
+	            }
+	        }
+	        return id;
+	    };
+	    ;
+	    Scanner.prototype.octalToDecimal = function (ch) {
+	        // \0 is not octal escape sequence
+	        var octal = (ch !== '0');
+	        var code = octalValue(ch);
+	        if (!this.eof() && character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
+	            octal = true;
+	            code = code * 8 + octalValue(this.source[this.index++]);
+	            // 3 digits are only allowed when string starts
+	            // with 0, 1, 2, 3
+	            if ('0123'.indexOf(ch) >= 0 && !this.eof() && character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
+	                code = code * 8 + octalValue(this.source[this.index++]);
+	            }
+	        }
+	        return {
+	            code: code,
+	            octal: octal
+	        };
+	    };
+	    ;
+	    // ECMA-262 11.6 Names and Keywords
+	    Scanner.prototype.scanIdentifier = function () {
+	        var type;
+	        var start = this.index;
+	        // Backslash (U+005C) starts an escaped character.
+	        var id = (this.source.charCodeAt(start) === 0x5C) ? this.getComplexIdentifier() : this.getIdentifier();
+	        // There is no keyword or literal with only one character.
+	        // Thus, it must be an identifier.
+	        if (id.length === 1) {
+	            type = token_1.Token.Identifier;
+	        }
+	        else if (this.isKeyword(id)) {
+	            type = token_1.Token.Keyword;
+	        }
+	        else if (id === 'null') {
+	            type = token_1.Token.NullLiteral;
+	        }
+	        else if (id === 'true' || id === 'false') {
+	            type = token_1.Token.BooleanLiteral;
+	        }
+	        else {
+	            type = token_1.Token.Identifier;
+	        }
+	        return {
+	            type: type,
+	            value: id,
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    // ECMA-262 11.7 Punctuators
+	    Scanner.prototype.scanPunctuator = function () {
+	        var token = {
+	            type: token_1.Token.Punctuator,
+	            value: '',
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: this.index,
+	            end: this.index
+	        };
+	        // Check for most common single-character punctuators.
+	        var str = this.source[this.index];
+	        switch (str) {
+	            case '(':
+	            case '{':
+	                if (str === '{') {
+	                    this.curlyStack.push('{');
+	                }
+	                ++this.index;
+	                break;
+	            case '.':
+	                ++this.index;
+	                if (this.source[this.index] === '.' && this.source[this.index + 1] === '.') {
+	                    // Spread operator: ...
+	                    this.index += 2;
+	                    str = '...';
+	                }
+	                break;
+	            case '}':
+	                ++this.index;
+	                this.curlyStack.pop();
+	                break;
+	            case ')':
+	            case ';':
+	            case ',':
+	            case '[':
+	            case ']':
+	            case ':':
+	            case '?':
+	            case '~':
+	                ++this.index;
+	                break;
+	            default:
+	                // 4-character punctuator.
+	                str = this.source.substr(this.index, 4);
+	                if (str === '>>>=') {
+	                    this.index += 4;
+	                }
+	                else {
+	                    // 3-character punctuators.
+	                    str = str.substr(0, 3);
+	                    if (str === '===' || str === '!==' || str === '>>>' ||
+	                        str === '<<=' || str === '>>=' || str === '**=') {
+	                        this.index += 3;
+	                    }
+	                    else {
+	                        // 2-character punctuators.
+	                        str = str.substr(0, 2);
+	                        if (str === '&&' || str === '||' || str === '==' || str === '!=' ||
+	                            str === '+=' || str === '-=' || str === '*=' || str === '/=' ||
+	                            str === '++' || str === '--' || str === '<<' || str === '>>' ||
+	                            str === '&=' || str === '|=' || str === '^=' || str === '%=' ||
+	                            str === '<=' || str === '>=' || str === '=>' || str === '**') {
+	                            this.index += 2;
+	                        }
+	                        else {
+	                            // 1-character punctuators.
+	                            str = this.source[this.index];
+	                            if ('<>=!+-*%&|^/'.indexOf(str) >= 0) {
+	                                ++this.index;
+	                            }
+	                        }
+	                    }
+	                }
+	        }
+	        if (this.index === token.start) {
+	            this.throwUnexpectedToken();
+	        }
+	        token.end = this.index;
+	        token.value = str;
+	        return token;
+	    };
+	    ;
+	    // ECMA-262 11.8.3 Numeric Literals
+	    Scanner.prototype.scanHexLiteral = function (start) {
+	        var number = '';
+	        while (!this.eof()) {
+	            if (!character_1.Character.isHexDigit(this.source.charCodeAt(this.index))) {
+	                break;
+	            }
+	            number += this.source[this.index++];
+	        }
+	        if (number.length === 0) {
+	            this.throwUnexpectedToken();
+	        }
+	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))) {
+	            this.throwUnexpectedToken();
+	        }
+	        return {
+	            type: token_1.Token.NumericLiteral,
+	            value: parseInt('0x' + number, 16),
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    Scanner.prototype.scanBinaryLiteral = function (start) {
+	        var number = '';
+	        var ch;
+	        while (!this.eof()) {
+	            ch = this.source[this.index];
+	            if (ch !== '0' && ch !== '1') {
+	                break;
+	            }
+	            number += this.source[this.index++];
+	        }
+	        if (number.length === 0) {
+	            // only 0b or 0B
+	            this.throwUnexpectedToken();
+	        }
+	        if (!this.eof()) {
+	            ch = this.source.charCodeAt(this.index);
+	            /* istanbul ignore else */
+	            if (character_1.Character.isIdentifierStart(ch) || character_1.Character.isDecimalDigit(ch)) {
+	                this.throwUnexpectedToken();
+	            }
+	        }
+	        return {
+	            type: token_1.Token.NumericLiteral,
+	            value: parseInt(number, 2),
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    Scanner.prototype.scanOctalLiteral = function (prefix, start) {
+	        var number = '';
+	        var octal = false;
+	        if (character_1.Character.isOctalDigit(prefix.charCodeAt(0))) {
+	            octal = true;
+	            number = '0' + this.source[this.index++];
+	        }
+	        else {
+	            ++this.index;
+	        }
+	        while (!this.eof()) {
+	            if (!character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
+	                break;
+	            }
+	            number += this.source[this.index++];
+	        }
+	        if (!octal && number.length === 0) {
+	            // only 0o or 0O
+	            this.throwUnexpectedToken();
+	        }
+	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index)) || character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
+	            this.throwUnexpectedToken();
+	        }
+	        return {
+	            type: token_1.Token.NumericLiteral,
+	            value: parseInt(number, 8),
+	            octal: octal,
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    Scanner.prototype.isImplicitOctalLiteral = function () {
+	        // Implicit octal, unless there is a non-octal digit.
+	        // (Annex B.1.1 on Numeric Literals)
+	        for (var i = this.index + 1; i < this.length; ++i) {
+	            var ch = this.source[i];
+	            if (ch === '8' || ch === '9') {
+	                return false;
+	            }
+	            if (!character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
+	                return true;
+	            }
+	        }
+	        return true;
+	    };
+	    ;
+	    Scanner.prototype.scanNumericLiteral = function () {
+	        var start = this.index;
+	        var ch = this.source[start];
+	        assert_1.assert(character_1.Character.isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'), 'Numeric literal must start with a decimal digit or a decimal point');
+	        var number = '';
+	        if (ch !== '.') {
+	            number = this.source[this.index++];
+	            ch = this.source[this.index];
+	            // Hex number starts with '0x'.
+	            // Octal number starts with '0'.
+	            // Octal number in ES6 starts with '0o'.
+	            // Binary number in ES6 starts with '0b'.
+	            if (number === '0') {
+	                if (ch === 'x' || ch === 'X') {
+	                    ++this.index;
+	                    return this.scanHexLiteral(start);
+	                }
+	                if (ch === 'b' || ch === 'B') {
+	                    ++this.index;
+	                    return this.scanBinaryLiteral(start);
+	                }
+	                if (ch === 'o' || ch === 'O') {
+	                    return this.scanOctalLiteral(ch, start);
+	                }
+	                if (ch && character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
+	                    if (this.isImplicitOctalLiteral()) {
+	                        return this.scanOctalLiteral(ch, start);
+	                    }
+	                }
+	            }
+	            while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
+	                number += this.source[this.index++];
+	            }
+	            ch = this.source[this.index];
+	        }
+	        if (ch === '.') {
+	            number += this.source[this.index++];
+	            while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
+	                number += this.source[this.index++];
+	            }
+	            ch = this.source[this.index];
+	        }
+	        if (ch === 'e' || ch === 'E') {
+	            number += this.source[this.index++];
+	            ch = this.source[this.index];
+	            if (ch === '+' || ch === '-') {
+	                number += this.source[this.index++];
+	            }
+	            if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
+	                while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
+	                    number += this.source[this.index++];
+	                }
+	            }
+	            else {
+	                this.throwUnexpectedToken();
+	            }
+	        }
+	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))) {
+	            this.throwUnexpectedToken();
+	        }
+	        return {
+	            type: token_1.Token.NumericLiteral,
+	            value: parseFloat(number),
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    // ECMA-262 11.8.4 String Literals
+	    Scanner.prototype.scanStringLiteral = function () {
+	        var start = this.index;
+	        var quote = this.source[start];
+	        assert_1.assert((quote === '\'' || quote === '"'), 'String literal must starts with a quote');
+	        ++this.index;
+	        var octal = false;
+	        var str = '';
+	        while (!this.eof()) {
+	            var ch = this.source[this.index++];
+	            if (ch === quote) {
+	                quote = '';
+	                break;
+	            }
+	            else if (ch === '\\') {
+	                ch = this.source[this.index++];
+	                if (!ch || !character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
+	                    switch (ch) {
+	                        case 'u':
+	                        case 'x':
+	                            if (this.source[this.index] === '{') {
+	                                ++this.index;
+	                                str += this.scanUnicodeCodePointEscape();
+	                            }
+	                            else {
+	                                var unescaped = this.scanHexEscape(ch);
+	                                if (!unescaped) {
+	                                    this.throwUnexpectedToken();
+	                                }
+	                                str += unescaped;
+	                            }
+	                            break;
+	                        case 'n':
+	                            str += '\n';
+	                            break;
+	                        case 'r':
+	                            str += '\r';
+	                            break;
+	                        case 't':
+	                            str += '\t';
+	                            break;
+	                        case 'b':
+	                            str += '\b';
+	                            break;
+	                        case 'f':
+	                            str += '\f';
+	                            break;
+	                        case 'v':
+	                            str += '\x0B';
+	                            break;
+	                        case '8':
+	                        case '9':
+	                            str += ch;
+	                            this.tolerateUnexpectedToken();
+	                            break;
+	                        default:
+	                            if (ch && character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
+	                                var octToDec = this.octalToDecimal(ch);
+	                                octal = octToDec.octal || octal;
+	                                str += String.fromCharCode(octToDec.code);
+	                            }
+	                            else {
+	                                str += ch;
+	                            }
+	                            break;
+	                    }
+	                }
+	                else {
+	                    ++this.lineNumber;
+	                    if (ch === '\r' && this.source[this.index] === '\n') {
+	                        ++this.index;
+	                    }
+	                    this.lineStart = this.index;
+	                }
+	            }
+	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
+	                break;
+	            }
+	            else {
+	                str += ch;
+	            }
+	        }
+	        if (quote !== '') {
+	            this.index = start;
+	            this.throwUnexpectedToken();
+	        }
+	        return {
+	            type: token_1.Token.StringLiteral,
+	            value: str,
+	            octal: octal,
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    // ECMA-262 11.8.6 Template Literal Lexical Components
+	    Scanner.prototype.scanTemplate = function () {
+	        var cooked = '';
+	        var terminated = false;
+	        var start = this.index;
+	        var head = (this.source[start] === '`');
+	        var tail = false;
+	        var rawOffset = 2;
+	        ++this.index;
+	        while (!this.eof()) {
+	            var ch = this.source[this.index++];
+	            if (ch === '`') {
+	                rawOffset = 1;
+	                tail = true;
+	                terminated = true;
+	                break;
+	            }
+	            else if (ch === '$') {
+	                if (this.source[this.index] === '{') {
+	                    this.curlyStack.push('${');
+	                    ++this.index;
+	                    terminated = true;
+	                    break;
+	                }
+	                cooked += ch;
+	            }
+	            else if (ch === '\\') {
+	                ch = this.source[this.index++];
+	                if (!character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
+	                    switch (ch) {
+	                        case 'n':
+	                            cooked += '\n';
+	                            break;
+	                        case 'r':
+	                            cooked += '\r';
+	                            break;
+	                        case 't':
+	                            cooked += '\t';
+	                            break;
+	                        case 'u':
+	                        case 'x':
+	                            if (this.source[this.index] === '{') {
+	                                ++this.index;
+	                                cooked += this.scanUnicodeCodePointEscape();
+	                            }
+	                            else {
+	                                var restore = this.index;
+	                                var unescaped = this.scanHexEscape(ch);
+	                                if (unescaped) {
+	                                    cooked += unescaped;
+	                                }
+	                                else {
+	                                    this.index = restore;
+	                                    cooked += ch;
+	                                }
+	                            }
+	                            break;
+	                        case 'b':
+	                            cooked += '\b';
+	                            break;
+	                        case 'f':
+	                            cooked += '\f';
+	                            break;
+	                        case 'v':
+	                            cooked += '\v';
+	                            break;
+	                        default:
+	                            if (ch === '0') {
+	                                if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
+	                                    // Illegal: \01 \02 and so on
+	                                    this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);
+	                                }
+	                                cooked += '\0';
+	                            }
+	                            else if (character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
+	                                // Illegal: \1 \2
+	                                this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);
+	                            }
+	                            else {
+	                                cooked += ch;
+	                            }
+	                            break;
+	                    }
+	                }
+	                else {
+	                    ++this.lineNumber;
+	                    if (ch === '\r' && this.source[this.index] === '\n') {
+	                        ++this.index;
+	                    }
+	                    this.lineStart = this.index;
+	                }
+	            }
+	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
+	                ++this.lineNumber;
+	                if (ch === '\r' && this.source[this.index] === '\n') {
+	                    ++this.index;
+	                }
+	                this.lineStart = this.index;
+	                cooked += '\n';
+	            }
+	            else {
+	                cooked += ch;
+	            }
+	        }
+	        if (!terminated) {
+	            this.throwUnexpectedToken();
+	        }
+	        if (!head) {
+	            this.curlyStack.pop();
+	        }
+	        return {
+	            type: token_1.Token.Template,
+	            value: {
+	                cooked: cooked,
+	                raw: this.source.slice(start + 1, this.index - rawOffset)
+	            },
+	            head: head,
+	            tail: tail,
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    // ECMA-262 11.8.5 Regular Expression Literals
+	    Scanner.prototype.testRegExp = function (pattern, flags) {
+	        // The BMP character to use as a replacement for astral symbols when
+	        // translating an ES6 "u"-flagged pattern to an ES5-compatible
+	        // approximation.
+	        // Note: replacing with '\uFFFF' enables false positives in unlikely
+	        // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid
+	        // pattern that would not be detected by this substitution.
+	        var astralSubstitute = '\uFFFF';
+	        var tmp = pattern;
+	        var self = this;
+	        if (flags.indexOf('u') >= 0) {
+	            tmp = tmp
+	                .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function ($0, $1, $2) {
+	                var codePoint = parseInt($1 || $2, 16);
+	                if (codePoint > 0x10FFFF) {
+	                    self.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);
+	                }
+	                if (codePoint <= 0xFFFF) {
+	                    return String.fromCharCode(codePoint);
+	                }
+	                return astralSubstitute;
+	            })
+	                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, astralSubstitute);
+	        }
+	        // First, detect invalid regular expressions.
+	        try {
+	            RegExp(tmp);
+	        }
+	        catch (e) {
+	            this.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);
+	        }
+	        // Return a regular expression object for this pattern-flag pair, or
+	        // `null` in case the current environment doesn't support the flags it
+	        // uses.
+	        try {
+	            return new RegExp(pattern, flags);
+	        }
+	        catch (exception) {
+	            /* istanbul ignore next */
+	            return null;
+	        }
+	    };
+	    ;
+	    Scanner.prototype.scanRegExpBody = function () {
+	        var ch = this.source[this.index];
+	        assert_1.assert(ch === '/', 'Regular expression literal must start with a slash');
+	        var str = this.source[this.index++];
+	        var classMarker = false;
+	        var terminated = false;
+	        while (!this.eof()) {
+	            ch = this.source[this.index++];
+	            str += ch;
+	            if (ch === '\\') {
+	                ch = this.source[this.index++];
+	                // ECMA-262 7.8.5
+	                if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
+	                    this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
+	                }
+	                str += ch;
+	            }
+	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
+	                this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
+	            }
+	            else if (classMarker) {
+	                if (ch === ']') {
+	                    classMarker = false;
+	                }
+	            }
+	            else {
+	                if (ch === '/') {
+	                    terminated = true;
+	                    break;
+	                }
+	                else if (ch === '[') {
+	                    classMarker = true;
+	                }
+	            }
+	        }
+	        if (!terminated) {
+	            this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
+	        }
+	        // Exclude leading and trailing slash.
+	        var body = str.substr(1, str.length - 2);
+	        return {
+	            value: body,
+	            literal: str
+	        };
+	    };
+	    ;
+	    Scanner.prototype.scanRegExpFlags = function () {
+	        var str = '';
+	        var flags = '';
+	        while (!this.eof()) {
+	            var ch = this.source[this.index];
+	            if (!character_1.Character.isIdentifierPart(ch.charCodeAt(0))) {
+	                break;
+	            }
+	            ++this.index;
+	            if (ch === '\\' && !this.eof()) {
+	                ch = this.source[this.index];
+	                if (ch === 'u') {
+	                    ++this.index;
+	                    var restore = this.index;
+	                    ch = this.scanHexEscape('u');
+	                    if (ch) {
+	                        flags += ch;
+	                        for (str += '\\u'; restore < this.index; ++restore) {
+	                            str += this.source[restore];
+	                        }
+	                    }
+	                    else {
+	                        this.index = restore;
+	                        flags += 'u';
+	                        str += '\\u';
+	                    }
+	                    this.tolerateUnexpectedToken();
+	                }
+	                else {
+	                    str += '\\';
+	                    this.tolerateUnexpectedToken();
+	                }
+	            }
+	            else {
+	                flags += ch;
+	                str += ch;
+	            }
+	        }
+	        return {
+	            value: flags,
+	            literal: str
+	        };
+	    };
+	    ;
+	    Scanner.prototype.scanRegExp = function () {
+	        var start = this.index;
+	        var body = this.scanRegExpBody();
+	        var flags = this.scanRegExpFlags();
+	        var value = this.testRegExp(body.value, flags.value);
+	        return {
+	            type: token_1.Token.RegularExpression,
+	            value: value,
+	            literal: body.literal + flags.literal,
+	            regex: {
+	                pattern: body.value,
+	                flags: flags.value
+	            },
+	            lineNumber: this.lineNumber,
+	            lineStart: this.lineStart,
+	            start: start,
+	            end: this.index
+	        };
+	    };
+	    ;
+	    Scanner.prototype.lex = function () {
+	        if (this.eof()) {
+	            return {
+	                type: token_1.Token.EOF,
+	                lineNumber: this.lineNumber,
+	                lineStart: this.lineStart,
+	                start: this.index,
+	                end: this.index
+	            };
+	        }
+	        var cp = this.source.charCodeAt(this.index);
+	        if (character_1.Character.isIdentifierStart(cp)) {
+	            return this.scanIdentifier();
+	        }
+	        // Very common: ( and ) and ;
+	        if (cp === 0x28 || cp === 0x29 || cp === 0x3B) {
+	            return this.scanPunctuator();
+	        }
+	        // String literal starts with single quote (U+0027) or double quote (U+0022).
+	        if (cp === 0x27 || cp === 0x22) {
+	            return this.scanStringLiteral();
+	        }
+	        // Dot (.) U+002E can also start a floating-point number, hence the need
+	        // to check the next character.
+	        if (cp === 0x2E) {
+	            if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index + 1))) {
+	                return this.scanNumericLiteral();
+	            }
+	            return this.scanPunctuator();
+	        }
+	        if (character_1.Character.isDecimalDigit(cp)) {
+	            return this.scanNumericLiteral();
+	        }
+	        // Template literals start with ` (U+0060) for template head
+	        // or } (U+007D) for template middle or template tail.
+	        if (cp === 0x60 || (cp === 0x7D && this.curlyStack[this.curlyStack.length - 1] === '${')) {
+	            return this.scanTemplate();
+	        }
+	        // Possible identifier start in a surrogate pair.
+	        if (cp >= 0xD800 && cp < 0xDFFF) {
+	            if (character_1.Character.isIdentifierStart(this.codePointAt(this.index))) {
+	                return this.scanIdentifier();
+	            }
+	        }
+	        return this.scanPunctuator();
+	    };
+	    ;
+	    return Scanner;
+	}());
+	exports.Scanner = Scanner;
+
+
+/***/ },
+/* 9 */
+/***/ function(module, exports) {
+
+	"use strict";
+	// See also tools/generate-unicode-regex.js.
+	var Regex = {
+	    // Unicode v8.0.0 NonAsciiIdentifierStart:
+	    NonAsciiIdentifierStart: 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+	    // Unicode v8.0.0 NonAsciiIdentifierPart:
+	    NonAsciiIdentifierPart: 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+	};
+	exports.Character = {
+	    fromCodePoint: function (cp) {
+	        return (cp < 0x10000) ? String.fromCharCode(cp) :
+	            String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) +
+	                String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023));
+	    },
+	    // ECMA-262 11.2 White Space
+	    isWhiteSpace: function (cp) {
+	        return (cp === 0x20) || (cp === 0x09) || (cp === 0x0B) || (cp === 0x0C) || (cp === 0xA0) ||
+	            (cp >= 0x1680 && [0x1680, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(cp) >= 0);
+	    },
+	    // ECMA-262 11.3 Line Terminators
+	    isLineTerminator: function (cp) {
+	        return (cp === 0x0A) || (cp === 0x0D) || (cp === 0x2028) || (cp === 0x2029);
+	    },
+	    // ECMA-262 11.6 Identifier Names and Identifiers
+	    isIdentifierStart: function (cp) {
+	        return (cp === 0x24) || (cp === 0x5F) ||
+	            (cp >= 0x41 && cp <= 0x5A) ||
+	            (cp >= 0x61 && cp <= 0x7A) ||
+	            (cp === 0x5C) ||
+	            ((cp >= 0x80) && Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp)));
+	    },
+	    isIdentifierPart: function (cp) {
+	        return (cp === 0x24) || (cp === 0x5F) ||
+	            (cp >= 0x41 && cp <= 0x5A) ||
+	            (cp >= 0x61 && cp <= 0x7A) ||
+	            (cp >= 0x30 && cp <= 0x39) ||
+	            (cp === 0x5C) ||
+	            ((cp >= 0x80) && Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp)));
+	    },
+	    // ECMA-262 11.8.3 Numeric Literals
+	    isDecimalDigit: function (cp) {
+	        return (cp >= 0x30 && cp <= 0x39); // 0..9
+	    },
+	    isHexDigit: function (cp) {
+	        return (cp >= 0x30 && cp <= 0x39) ||
+	            (cp >= 0x41 && cp <= 0x46) ||
+	            (cp >= 0x61 && cp <= 0x66); // a..f
+	    },
+	    isOctalDigit: function (cp) {
+	        return (cp >= 0x30 && cp <= 0x37); // 0..7
+	    }
+	};
+
+
+/***/ },
+/* 10 */
+/***/ function(module, exports, __webpack_require__) {
+
+	"use strict";
+	var syntax_1 = __webpack_require__(2);
+	var ArrayExpression = (function () {
+	    function ArrayExpression(elements) {
+	        this.type = syntax_1.Syntax.ArrayExpression;
+	        this.elements = elements;
+	    }
+	    return ArrayExpression;
+	}());
+	exports.ArrayExpression = ArrayExpression;
+	var ArrayPattern = (function () {
+	    function ArrayPattern(elements) {
+	        this.type = syntax_1.Syntax.ArrayPattern;
+	        this.elements = elements;
+	    }
+	    return ArrayPattern;
+	}());
+	exports.ArrayPattern = ArrayPattern;
+	var ArrowFunctionExpression = (function () {
+	    function ArrowFunctionExpression(params, body, expression) {
+	        this.type = syntax_1.Syntax.ArrowFunctionExpression;
+	        this.id = null;
+	        this.params = params;
+	        this.body = body;
+	        this.generator = false;
+	        this.expression = expression;
+	        this.async = false;
+	    }
+	    return ArrowFunctionExpression;
+	}());
+	exports.ArrowFunctionExpression = ArrowFunctionExpression;
+	var AssignmentExpression = (function () {
+	    function AssignmentExpression(operator, left, right) {
+	        this.type = syntax_1.Syntax.AssignmentExpression;
+	        this.operator = operator;
+	        this.left = left;
+	        this.right = right;
+	    }
+	    return AssignmentExpression;
+	}());
+	exports.AssignmentExpression = AssignmentExpression;
+	var AssignmentPattern = (function () {
+	    function AssignmentPattern(left, right) {
+	        this.type = syntax_1.Syntax.AssignmentPattern;
+	        this.left = left;
+	        this.right = right;
+	    }
+	    return AssignmentPattern;
+	}());
+	exports.AssignmentPattern = AssignmentPattern;
+	var AsyncArrowFunctionExpression = (function () {
+	    function AsyncArrowFunctionExpression(params, body, expression) {
+	        this.type = syntax_1.Syntax.ArrowFunctionExpression;
+	        this.id = null;
+	        this.params = params;
+	        this.body = body;
+	        this.generator = false;
+	        this.expression = expression;
+	        this.async = true;
+	    }
+	    return AsyncArrowFunctionExpression;
+	}());
+	exports.AsyncArrowFunctionExpression = AsyncArrowFunctionExpression;
+	var AsyncFunctionDeclaration = (function () {
+	    function AsyncFunctionDeclaration(id, params, body) {
+	        this.type = syntax_1.Syntax.FunctionDeclaration;
+	        this.id = id;
+	        this.params = params;
+	        this.body = body;
+	        this.generator = false;
+	        this.expression = false;
+	        this.async = true;
+	    }
+	    return AsyncFunctionDeclaration;
+	}());
+	exports.AsyncFunctionDeclaration = AsyncFunctionDeclaration;
+	var AsyncFunctionExpression = (function () {
+	    function AsyncFunctionExpression(id, params, body) {
+	        this.type = syntax_1.Syntax.FunctionExpression;
+	        this.id = id;
+	        this.params = params;
+	        this.body = body;
+	        this.generator = false;
+	        this.expression = false;
+	        this.async = true;
+	    }
+	    return AsyncFunctionExpression;
+	}());
+	exports.AsyncFunctionExpression = AsyncFunctionExpression;
+	var AwaitExpression = (function () {
+	    function AwaitExpression(argument) {
+	        this.type = syntax_1.Syntax.AwaitExpression;
+	        this.argument = argument;
+	    }
+	    return AwaitExpression;
+	}());
+	exports.AwaitExpression = AwaitExpression;
+	var BinaryExpression = (function () {
+	    function BinaryExpression(operator, left, right) {
+	        var logical = (operator === '||' || operator === '&&');
+	        this.type = logical ? syntax_1.Syntax.LogicalExpression : syntax_1.Syntax.BinaryExpression;
+	        this.operator = operator;
+	        this.left = left;
+	        this.right = right;
+	    }
+	    return BinaryExpression;
+	}());
+	exports.BinaryExpression = BinaryExpression;
+	var BlockStatement = (function () {
+	    function BlockStatement(body) {
+	        this.type = syntax_1.Syntax.BlockStatement;
+	        this.body = body;
+	    }
+	    return BlockStatement;
+	}());
+	exports.BlockStatement = BlockStatement;
+	var BreakStatement = (function () {
+	    function BreakStatement(label) {
+	        this.type = syntax_1.Syntax.BreakStatement;
+	        this.label = label;
+	    }
+	    return BreakStatement;
+	}());
+	exports.BreakStatement = BreakStatement;
+	var CallExpression = (function () {
+	    function CallExpression(callee, args) {
+	        this.type = syntax_1.Syntax.CallExpression;
+	        this.callee = callee;
+	        this.arguments = args;
+	    }
+	    return CallExpression;
+	}());
+	exports.CallExpression = CallExpression;
+	var CatchClause = (function () {
+	    function CatchClause(param, body) {
+	        this.type = syntax_1.Syntax.CatchClause;
+	        this.param = param;
+	        this.body = body;
+	    }
+	    return CatchClause;
+	}());
+	exports.CatchClause = CatchClause;
+	var ClassBody = (function () {
+	    function ClassBody(body) {
+	        this.type = syntax_1.Syntax.ClassBody;
+	        this.body = body;
+	    }
+	    return ClassBody;
+	}());
+	exports.ClassBody = ClassBody;
+	var ClassDeclaration = (function () {
+	    function ClassDeclaration(id, superClass, body) {
+	        this.type = syntax_1.Syntax.ClassDeclaration;
+	        this.id = id;
+	        this.superClass = superClass;
+	        this.body = body;
+	    }
+	    return ClassDeclaration;
+	}());
+	exports.ClassDeclaration = ClassDeclaration;
+	var ClassExpression = (function () {
+	    function ClassExpression(id, superClass, body) {
+	        this.type = syntax_1.Syntax.ClassExpression;
+	        this.id = id;
+	        this.superClass = superClass;
+	        this.body = body;
+	    }
+	    return ClassExpression;
+	}());
+	exports.ClassExpression = ClassExpression;
+	var ComputedMemberExpression = (function () {
+	    function ComputedMemberExpression(object, property) {
+	        this.type = syntax_1.Syntax.MemberExpression;
+	        this.computed = true;
+	        this.object = object;
+	        this.property = property;
+	    }
+	    return ComputedMemberExpression;
+	}());
+	exports.ComputedMemberExpression = ComputedMemberExpression;
+	var ConditionalExpression = (function () {
+	    function ConditionalExpression(test, consequent, alternate) {
+	        this.type = syntax_1.Syntax.ConditionalExpression;
+	        this.test = test;
+	        this.consequent = consequent;
+	        this.alternate = alternate;
+	    }
+	    return ConditionalExpression;
+	}());
+	exports.ConditionalExpression = ConditionalExpression;
+	var ContinueStatement = (function () {
+	    function ContinueStatement(label) {
+	        this.type = syntax_1.Syntax.ContinueStatement;
+	        this.label = label;
+	    }
+	    return ContinueStatement;
+	}());
+	exports.ContinueStatement = ContinueStatement;
+	var DebuggerStatement = (function () {
+	    function DebuggerStatement() {
+	        this.type = syntax_1.Syntax.DebuggerStatement;
+	    }
+	    return DebuggerStatement;
+	}());
+	exports.DebuggerStatement = DebuggerStatement;
+	var Directive = (function () {
+	    function Directive(expression, directive) {
+	        this.type = syntax_1.Syntax.ExpressionStatement;
+	        this.expression = expression;
+	        this.directive = directive;
+	    }
+	    return Directive;
+	}());
+	exports.Directive = Directive;
+	var DoWhileStatement = (function () {
+	    function DoWhileStatement(body, test) {
+	        this.type = syntax_1.Syntax.DoWhileStatement;
+	        this.body = body;
+	        this.test = test;
+	    }
+	    return DoWhileStatement;
+	}());
+	exports.DoWhileStatement = DoWhileStatement;
+	var EmptyStatement = (function () {
+	    function EmptyStatement() {
+	        this.type = syntax_1.Syntax.EmptyStatement;
+	    }
+	    return EmptyStatement;
+	}());
+	exports.EmptyStatement = EmptyStatement;
+	var ExportAllDeclaration = (function () {
+	    function ExportAllDeclaration(source) {
+	        this.type = syntax_1.Syntax.ExportAllDeclaration;
+	        this.source = source;
+	    }
+	    return ExportAllDeclaration;
+	}());
+	exports.ExportAllDeclaration = ExportAllDeclaration;
+	var ExportDefaultDeclaration = (function () {
+	    function ExportDefaultDeclaration(declaration) {
+	        this.type = syntax_1.Syntax.ExportDefaultDeclaration;
+	        this.declaration = declaration;
+	    }
+	    return ExportDefaultDeclaration;
+	}());
+	exports.ExportDefaultDeclaration = ExportDefaultDeclaration;
+	var ExportNamedDeclaration = (function () {
+	    function ExportNamedDeclaration(declaration, specifiers, source) {
+	        this.type = syntax_1.Syntax.ExportNamedDeclaration;
+	        this.declaration = declaration;
+	        this.specifiers = specifiers;
+	        this.source = source;
+	    }
+	    return ExportNamedDeclaration;
+	}());
+	exports.ExportNamedDeclaration = ExportNamedDeclaration;
+	var ExportSpecifier = (function () {
+	    function ExportSpecifier(local, exported) {
+	        this.type = syntax_1.Syntax.ExportSpecifier;
+	        this.exported = exported;
+	        this.local = local;
+	    }
+	    return ExportSpecifier;
+	}());
+	exports.ExportSpecifier = ExportSpecifier;
+	var ExpressionStatement = (function () {
+	    function ExpressionStatement(expression) {
+	        this.type = syntax_1.Syntax.ExpressionStatement;
+	        this.expression = expression;
+	    }
+	    return ExpressionStatement;
+	}());
+	exports.ExpressionStatement = ExpressionStatement;
+	var ForInStatement = (function () {
+	    function ForInStatement(left, right, body) {
+	        this.type = syntax_1.Syntax.ForInStatement;
+	        this.left = left;
+	        this.right = right;
+	        this.body = body;
+	        this.each = false;
+	    }
+	    return ForInStatement;
+	}());
+	exports.ForInStatement = ForInStatement;
+	var ForOfStatement = (function () {
+	    function ForOfStatement(left, right, body) {
+	        this.type = syntax_1.Syntax.ForOfStatement;
+	        this.left = left;
+	        this.right = right;
+	        this.body = body;
+	    }
+	    return ForOfStatement;
+	}());
+	exports.ForOfStatement = ForOfStatement;
+	var ForStatement = (function () {
+	    function ForStatement(init, test, update, body) {
+	        this.type = syntax_1.Syntax.ForStatement;
+	        this.init = init;
+	        this.test = test;
+	        this.update = update;
+	        this.body = body;
+	    }
+	    return ForStatement;
+	}());
+	exports.ForStatement = ForStatement;
+	var FunctionDeclaration = (function () {
+	    function FunctionDeclaration(id, params, body, generator) {
+	        this.type = syntax_1.Syntax.FunctionDeclaration;
+	        this.id = id;
+	        this.params = params;
+	        this.body = body;
+	        this.generator = generator;
+	        this.expression = false;
+	        this.async = false;
+	    }
+	    return FunctionDeclaration;
+	}());
+	exports.FunctionDeclaration = FunctionDeclaration;
+	var FunctionExpression = (function () {
+	    function FunctionExpression(id, params, body, generator) {
+	        this.type = syntax_1.Syntax.FunctionExpression;
+	        this.id = id;
+	        this.params = params;
+	        this.body = body;
+	        this.generator = generator;
+	        this.expression = false;
+	        this.async = false;
+	    }
+	    return FunctionExpression;
+	}());
+	exports.FunctionExpression = FunctionExpression;
+	var Identifier = (function () {
+	    function Identifier(name) {
+	        this.type = syntax_1.Syntax.Identifier;
+	        this.name = name;
+	    }
+	    return Identifier;
+	}());
+	exports.Identifier = Identifier;
+	var IfStatement = (function () {
+	    function IfStatement(test, consequent, alternate) {
+	        this.type = syntax_1.Syntax.IfStatement;
+	        this.test = test;
+	        this.consequent = consequent;
+	        this.alternate = alternate;
+	    }
+	    return IfStatement;
+	}());
+	exports.IfStatement = IfStatement;
+	var ImportDeclaration = (function () {
+	    function ImportDeclaration(specifiers, source) {
+	        this.type = syntax_1.Syntax.ImportDeclaration;
+	        this.specifiers = specifiers;
+	        this.source = source;
+	    }
+	    return ImportDeclaration;
+	}());
+	exports.ImportDeclaration = ImportDeclaration;
+	var ImportDefaultSpecifier = (function () {
+	    function ImportDefaultSpecifier(local) {
+	        this.type = syntax_1.Syntax.ImportDefaultSpecifier;
+	        this.local = local;
+	    }
+	    return ImportDefaultSpecifier;
+	}());
+	exports.ImportDefaultSpecifier = ImportDefaultSpecifier;
+	var ImportNamespaceSpecifier = (function () {
+	    function ImportNamespaceSpecifier(local) {
+	        this.type = syntax_1.Syntax.ImportNamespaceSpecifier;
+	        this.local = local;
+	    }
+	    return ImportNamespaceSpecifier;
+	}());
+	exports.ImportNamespaceSpecifier = ImportNamespaceSpecifier;
+	var ImportSpecifier = (function () {
+	    function ImportSpecifier(local, imported) {
+	        this.type = syntax_1.Syntax.ImportSpecifier;
+	        this.local = local;
+	        this.imported = imported;
+	    }
+	    return ImportSpecifier;
+	}());
+	exports.ImportSpecifier = ImportSpecifier;
+	var LabeledStatement = (function () {
+	    function LabeledStatement(label, body) {
+	        this.type = syntax_1.Syntax.LabeledStatement;
+	        this.label = label;
+	        this.body = body;
+	    }
+	    return LabeledStatement;
+	}());
+	exports.LabeledStatement = LabeledStatement;
+	var Literal = (function () {
+	    function Literal(value, raw) {
+	        this.type = syntax_1.Syntax.Literal;
+	        this.value = value;
+	        this.raw = raw;
+	    }
+	    return Literal;
+	}());
+	exports.Literal = Literal;
+	var MetaProperty = (function () {
+	    function MetaProperty(meta, property) {
+	        this.type = syntax_1.Syntax.MetaProperty;
+	        this.meta = meta;
+	        this.property = property;
+	    }
+	    return MetaProperty;
+	}());
+	exports.MetaProperty = MetaProperty;
+	var MethodDefinition = (function () {
+	    function MethodDefinition(key, computed, value, kind, isStatic) {
+	        this.type = syntax_1.Syntax.MethodDefinition;
+	        this.key = key;
+	        this.computed = computed;
+	        this.value = value;
+	        this.kind = kind;
+	        this.static = isStatic;
+	    }
+	    return MethodDefinition;
+	}());
+	exports.MethodDefinition = MethodDefinition;
+	var Module = (function () {
+	    function Module(body) {
+	        this.type = syntax_1.Syntax.Program;
+	        this.body = body;
+	        this.sourceType = 'module';
+	    }
+	    return Module;
+	}());
+	exports.Module = Module;
+	var NewExpression = (function () {
+	    function NewExpression(callee, args) {
+	        this.type = syntax_1.Syntax.NewExpression;
+	        this.callee = callee;
+	        this.arguments = args;
+	    }
+	    return NewExpression;
+	}());
+	exports.NewExpression = NewExpression;
+	var ObjectExpression = (function () {
+	    function ObjectExpression(properties) {
+	        this.type = syntax_1.Syntax.ObjectExpression;
+	        this.properties = properties;
+	    }
+	    return ObjectExpression;
+	}());
+	exports.ObjectExpression = ObjectExpression;
+	var ObjectPattern = (function () {
+	    function ObjectPattern(properties) {
+	        this.type = syntax_1.Syntax.ObjectPattern;
+	        this.properties = properties;
+	    }
+	    return ObjectPattern;
+	}());
+	exports.ObjectPattern = ObjectPattern;
+	var Property = (function () {
+	    function Property(kind, key, computed, value, method, shorthand) {
+	        this.type = syntax_1.Syntax.Property;
+	        this.key = key;
+	        this.computed = computed;
+	        this.value = value;
+	        this.kind = kind;
+	        this.method = method;
+	        this.shorthand = shorthand;
+	    }
+	    return Property;
+	}());
+	exports.Property = Property;
+	var RegexLiteral = (function () {
+	    function RegexLiteral(value, raw, regex) {
+	        this.type = syntax_1.Syntax.Literal;
+	        this.value = value;
+	        this.raw = raw;
+	        this.regex = regex;
+	    }
+	    return RegexLiteral;
+	}());
+	exports.RegexLiteral = RegexLiteral;
+	var RestElement = (function () {
+	    function RestElement(argument) {
+	        this.type = syntax_1.Syntax.RestElement;
+	        this.argument = argument;
+	    }
+	    return RestElement;
+	}());
+	exports.RestElement = RestElement;
+	var ReturnStatement = (function () {
+	    function ReturnStatement(argument) {
+	        this.type = syntax_1.Syntax.ReturnStatement;
+	        this.argument = argument;
+	    }
+	    return ReturnStatement;
+	}());
+	exports.ReturnStatement = ReturnStatement;
+	var Script = (function () {
+	    function Script(body) {
+	        this.type = syntax_1.Syntax.Program;
+	        this.body = body;
+	        this.sourceType = 'script';
+	    }
+	    return Script;
+	}());
+	exports.Script = Script;
+	var SequenceExpression = (function () {
+	    function SequenceExpression(expressions) {
+	        this.type = syntax_1.Syntax.SequenceExpression;
+	        this.expressions = expressions;
+	    }
+	    return SequenceExpression;
+	}());
+	exports.SequenceExpression = SequenceExpression;
+	var SpreadElement = (function () {
+	    function SpreadElement(argument) {
+	        this.type = syntax_1.Syntax.SpreadElement;
+	        this.argument = argument;
+	    }
+	    return SpreadElement;
+	}());
+	exports.SpreadElement = SpreadElement;
+	var StaticMemberExpression = (function () {
+	    function StaticMemberExpression(object, property) {
+	        this.type = syntax_1.Syntax.MemberExpression;
+	        this.computed = false;
+	        this.object = object;
+	        this.property = property;
+	    }
+	    return StaticMemberExpression;
+	}());
+	exports.StaticMemberExpression = StaticMemberExpression;
+	var Super = (function () {
+	    function Super() {
+	        this.type = syntax_1.Syntax.Super;
+	    }
+	    return Super;
+	}());
+	exports.Super = Super;
+	var SwitchCase = (function () {
+	    function SwitchCase(test, consequent) {
+	        this.type = syntax_1.Syntax.SwitchCase;
+	        this.test = test;
+	        this.consequent = consequent;
+	    }
+	    return SwitchCase;
+	}());
+	exports.SwitchCase = SwitchCase;
+	var SwitchStatement = (function () {
+	    function SwitchStatement(discriminant, cases) {
+	        this.type = syntax_1.Syntax.SwitchStatement;
+	        this.discriminant = discriminant;
+	        this.cases = cases;
+	    }
+	    return SwitchStatement;
+	}());
+	exports.SwitchStatement = SwitchStatement;
+	var TaggedTemplateExpression = (function () {
+	    function TaggedTemplateExpression(tag, quasi) {
+	        this.type = syntax_1.Syntax.TaggedTemplateExpression;
+	        this.tag = tag;
+	        this.quasi = quasi;
+	    }
+	    return TaggedTemplateExpression;
+	}());
+	exports.TaggedTemplateExpression = TaggedTemplateExpression;
+	var TemplateElement = (function () {
+	    function TemplateElement(value, tail) {
+	        this.type = syntax_1.Syntax.TemplateElement;
+	        this.value = value;
+	        this.tail = tail;
+	    }
+	    return TemplateElement;
+	}());
+	exports.TemplateElement = TemplateElement;
+	var TemplateLiteral = (function () {
+	    function TemplateLiteral(quasis, expressions) {
+	        this.type = syntax_1.Syntax.TemplateLiteral;
+	        this.quasis = quasis;
+	        this.expressions = expressions;
+	    }
+	    return TemplateLiteral;
+	}());
+	exports.TemplateLiteral = TemplateLiteral;
+	var ThisExpression = (function () {
+	    function ThisExpression() {
+	        this.type = syntax_1.Syntax.ThisExpression;
+	    }
+	    return ThisExpression;
+	}());
+	exports.ThisExpression = ThisExpression;
+	var ThrowStatement = (function () {
+	    function ThrowStatement(argument) {
+	        this.type = syntax_1.Syntax.ThrowStatement;
+	        this.argument = argument;
+	    }
+	    return ThrowStatement;
+	}());
+	exports.ThrowStatement = ThrowStatement;
+	var TryStatement = (function () {
+	    function TryStatement(block, handler, finalizer) {
+	        this.type = syntax_1.Syntax.TryStatement;
+	        this.block = block;
+	        this.handler = handler;
+	        this.finalizer = finalizer;
+	    }
+	    return TryStatement;
+	}());
+	exports.TryStatement = TryStatement;
+	var UnaryExpression = (function () {
+	    function UnaryExpression(operator, argument) {
+	        this.type = syntax_1.Syntax.UnaryExpression;
+	        this.operator = operator;
+	        this.argument = argument;
+	        this.prefix = true;
+	    }
+	    return UnaryExpression;
+	}());
+	exports.UnaryExpression = UnaryExpression;
+	var UpdateExpression = (function () {
+	    function UpdateExpression(operator, argument, prefix) {
+	        this.type = syntax_1.Syntax.UpdateExpression;
+	        this.operator = operator;
+	        this.argument = argument;
+	        this.prefix = prefix;
+	    }
+	    return UpdateExpression;
+	}());
+	exports.UpdateExpression = UpdateExpression;
+	var VariableDeclaration = (function () {
+	    function VariableDeclaration(declarations, kind) {
+	        this.type = syntax_1.Syntax.VariableDeclaration;
+	        this.declarations = declarations;
+	        this.kind = kind;
+	    }
+	    return VariableDeclaration;
+	}());
+	exports.VariableDeclaration = VariableDeclaration;
+	var VariableDeclarator = (function () {
+	    function VariableDeclarator(id, init) {
+	        this.type = syntax_1.Syntax.VariableDeclarator;
+	        this.id = id;
+	        this.init = init;
+	    }
+	    return VariableDeclarator;
+	}());
+	exports.VariableDeclarator = VariableDeclarator;
+	var WhileStatement = (function () {
+	    function WhileStatement(test, body) {
+	        this.type = syntax_1.Syntax.WhileStatement;
+	        this.test = test;
+	        this.body = body;
+	    }
+	    return WhileStatement;
+	}());
+	exports.WhileStatement = WhileStatement;
+	var WithStatement = (function () {
+	    function WithStatement(object, body) {
+	        this.type = syntax_1.Syntax.WithStatement;
+	        this.object = object;
+	        this.body = body;
+	    }
+	    return WithStatement;
+	}());
+	exports.WithStatement = WithStatement;
+	var YieldExpression = (function () {
+	    function YieldExpression(argument, delegate) {
+	        this.type = syntax_1.Syntax.YieldExpression;
+	        this.argument = argument;
+	        this.delegate = delegate;
+	    }
+	    return YieldExpression;
+	}());
+	exports.YieldExpression = YieldExpression;
+
+
+/***/ },
+/* 11 */
+/***/ function(module, exports, __webpack_require__) {
+
+	"use strict";
+/* istanbul ignore next */
+	var __extends = (this && this.__extends) || function (d, b) {
+	    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
+	    function __() { this.constructor = d; }
+	    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+	};
+	var character_1 = __webpack_require__(9);
+	var token_1 = __webpack_require__(7);
+	var parser_1 = __webpack_require__(3);
+	var xhtml_entities_1 = __webpack_require__(12);
+	var jsx_syntax_1 = __webpack_require__(13);
+	var Node = __webpack_require__(10);
+	var JSXNode = __webpack_require__(14);
+	var JSXToken;
+	(function (JSXToken) {
+	    JSXToken[JSXToken["Identifier"] = 100] = "Identifier";
+	    JSXToken[JSXToken["Text"] = 101] = "Text";
+	})(JSXToken || (JSXToken = {}));
+	token_1.TokenName[JSXToken.Identifier] = 'JSXIdentifier';
+	token_1.TokenName[JSXToken.Text] = 'JSXText';
+	// Fully qualified element name, e.g. <svg:path> returns "svg:path"
+	function getQualifiedElementName(elementName) {
+	    var qualifiedName;
+	    switch (elementName.type) {
+	        case jsx_syntax_1.JSXSyntax.JSXIdentifier:
+	            var id = (elementName);
+	            qualifiedName = id.name;
+	            break;
+	        case jsx_syntax_1.JSXSyntax.JSXNamespacedName:
+	            var ns = (elementName);
+	            qualifiedName = getQualifiedElementName(ns.namespace) + ':' +
+	                getQualifiedElementName(ns.name);
+	            break;
+	        case jsx_syntax_1.JSXSyntax.JSXMemberExpression:
+	            var expr = (elementName);
+	            qualifiedName = getQualifiedElementName(expr.object) + '.' +
+	                getQualifiedElementName(expr.property);
+	            break;
+	    }
+	    return qualifiedName;
+	}
+	var JSXParser = (function (_super) {
+	    __extends(JSXParser, _super);
+	    function JSXParser(code, options, delegate) {
+	        _super.call(this, code, options, delegate);
+	    }
+	    JSXParser.prototype.parsePrimaryExpression = function () {
+	        return this.match('<') ? this.parseJSXRoot() : _super.prototype.parsePrimaryExpression.call(this);
+	    };
+	    JSXParser.prototype.startJSX = function () {
+	        // Unwind the scanner before the lookahead token.
+	        this.scanner.index = this.startMarker.index;
+	        this.scanner.lineNumber = this.startMarker.lineNumber;
+	        this.scanner.lineStart = this.startMarker.lineStart;
+	    };
+	    JSXParser.prototype.finishJSX = function () {
+	        // Prime the next lookahead.
+	        this.nextToken();
+	    };
+	    JSXParser.prototype.reenterJSX = function () {
+	        this.startJSX();
+	        this.expectJSX('}');
+	        // Pop the closing '}' added from the lookahead.
+	        if (this.config.tokens) {
+	            this.tokens.pop();
+	        }
+	    };
+	    JSXParser.prototype.createJSXNode = function () {
+	        this.collectComments();
+	        return {
+	            index: this.scanner.index,
+	            line: this.scanner.lineNumber,
+	            column: this.scanner.index - this.scanner.lineStart
+	        };
+	    };
+	    JSXParser.prototype.createJSXChildNode = function () {
+	        return {
+	            index: this.scanner.index,
+	            line: this.scanner.lineNumber,
+	            column: this.scanner.index - this.scanner.lineStart
+	        };
+	    };
+	    JSXParser.prototype.scanXHTMLEntity = function () {
+	        var result = '&';
+	        var str = '';
+	        while (!this.scanner.eof()) {
+	            var ch = this.scanner.source[this.scanner.index++];
+	            if (ch === ';') {
+	                if (str[0] === '#') {
+	                    str = str.substr(1);
+	                    var hex = (str[0] === 'x');
+	                    var cp = hex ? parseInt('0' + str, 16) : parseInt(str, 10);
+	                    result = String.fromCharCode(cp);
+	                }
+	                else if (xhtml_entities_1.XHTMLEntities[str]) {
+	                    result = xhtml_entities_1.XHTMLEntities[str];
+	                }
+	                else {
+	                    result += ch;
+	                }
+	                break;
+	            }
+	            str += ch;
+	            result += ch;
+	        }
+	        return result;
+	    };
+	    // Scan the next JSX token. This replaces Scanner#lex when in JSX mode.
+	    JSXParser.prototype.lexJSX = function () {
+	        var cp = this.scanner.source.charCodeAt(this.scanner.index);
+	        // < > / : = { }
+	        if (cp === 60 || cp === 62 || cp === 47 || cp === 58 || cp === 61 || cp === 123 || cp === 125) {
+	            var value = this.scanner.source[this.scanner.index++];
+	            return {
+	                type: token_1.Token.Punctuator,
+	                value: value,
+	                lineNumber: this.scanner.lineNumber,
+	                lineStart: this.scanner.lineStart,
+	                start: this.scanner.index - 1,
+	                end: this.scanner.index
+	            };
+	        }
+	        // " '
+	        if (cp === 34 || cp === 39) {
+	            var start = this.scanner.index;
+	            var quote = this.scanner.source[this.scanner.index++];
+	            var str = '';
+	            while (!this.scanner.eof()) {
+	                var ch = this.scanner.source[this.scanner.index++];
+	                if (ch === quote) {
+	                    break;
+	                }
+	                else if (ch === '&') {
+	                    str += this.scanXHTMLEntity();
+	                }
+	                else {
+	                    str += ch;
+	                }
+	            }
+	            return {
+	                type: token_1.Token.StringLiteral,
+	                value: str,
+	                lineNumber: this.scanner.lineNumber,
+	                lineStart: this.scanner.lineStart,
+	                start: start,
+	                end: this.scanner.index
+	            };
+	        }
+	        // ... or .
+	        if (cp === 46) {
+	            var n1 = this.scanner.source.charCodeAt(this.scanner.index + 1);
+	            var n2 = this.scanner.source.charCodeAt(this.scanner.index + 2);
+	            var value = (n1 === 46 && n2 === 46) ? '...' : '.';
+	            var start = this.scanner.index;
+	            this.scanner.index += value.length;
+	            return {
+	                type: token_1.Token.Punctuator,
+	                value: value,
+	                lineNumber: this.scanner.lineNumber,
+	                lineStart: this.scanner.lineStart,
+	                start: start,
+	                end: this.scanner.index
+	            };
+	        }
+	        // Identifer can not contain backslash (char code 92).
+	        if (character_1.Character.isIdentifierStart(cp) && (cp !== 92)) {
+	            var start = this.scanner.index;
+	            ++this.scanner.index;
+	            while (!this.scanner.eof()) {
+	                var ch = this.scanner.source.charCodeAt(this.scanner.index);
+	                if (character_1.Character.isIdentifierPart(ch) && (ch !== 92)) {
+	                    ++this.scanner.index;
+	                }
+	                else if (ch === 45) {
+	                    // Hyphen (char code 45) can be part of an identifier.
+	                    ++this.scanner.index;
+	                }
+	                else {
+	                    break;
+	                }
+	            }
+	            var id = this.scanner.source.slice(start, this.scanner.index);
+	            return {
+	                type: JSXToken.Identifier,
+	                value: id,
+	                lineNumber: this.scanner.lineNumber,
+	                lineStart: this.scanner.lineStart,
+	                start: start,
+	                end: this.scanner.index
+	            };
+	        }
+	        this.scanner.throwUnexpectedToken();
+	    };
+	    JSXParser.prototype.nextJSXToken = function () {
+	        this.collectComments();
+	        this.startMarker.index = this.scanner.index;
+	        this.startMarker.lineNumber = this.scanner.lineNumber;
+	        this.startMarker.lineStart = this.scanner.lineStart;
+	        var token = this.lexJSX();
+	        this.lastMarker.index = this.scanner.index;
+	        this.lastMarker.lineNumber = this.scanner.lineNumber;
+	        this.lastMarker.lineStart = this.scanner.lineStart;
+	        if (this.config.tokens) {
+	            this.tokens.push(this.convertToken(token));
+	        }
+	        return token;
+	    };
+	    JSXParser.prototype.nextJSXText = function () {
+	        this.startMarker.index = this.scanner.index;
+	        this.startMarker.lineNumber = this.scanner.lineNumber;
+	        this.startMarker.lineStart = this.scanner.lineStart;
+	        var start = this.scanner.index;
+	        var text = '';
+	        while (!this.scanner.eof()) {
+	            var ch = this.scanner.source[this.scanner.index];
+	            if (ch === '{' || ch === '<') {
+	                break;
+	            }
+	            ++this.scanner.index;
+	            text += ch;
+	            if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
+	                ++this.scanner.lineNumber;
+	                if (ch === '\r' && this.scanner.source[this.scanner.index] === '\n') {
+	                    ++this.scanner.index;
+	                }
+	                this.scanner.lineStart = this.scanner.index;
+	            }
+	        }
+	        this.lastMarker.index = this.scanner.index;
+	        this.lastMarker.lineNumber = this.scanner.lineNumber;
+	        this.lastMarker.lineStart = this.scanner.lineStart;
+	        var token = {
+	            type: JSXToken.Text,
+	            value: text,
+	            lineNumber: this.scanner.lineNumber,
+	            lineStart: this.scanner.lineStart,
+	            start: start,
+	            end: this.scanner.index
+	        };
+	        if ((text.length > 0) && this.config.tokens) {
+	            this.tokens.push(this.convertToken(token));
+	        }
+	        return token;
+	    };
+	    JSXParser.prototype.peekJSXToken = function () {
+	        var previousIndex = this.scanner.index;
+	        var previousLineNumber = this.scanner.lineNumber;
+	        var previousLineStart = this.scanner.lineStart;
+	        this.scanner.scanComments();
+	        var next = this.lexJSX();
+	        this.scanner.index = previousIndex;
+	        this.scanner.lineNumber = previousLineNumber;
+	        this.scanner.lineStart = previousLineStart;
+	        return next;
+	    };
+	    // Expect the next JSX token to match the specified punctuator.
+	    // If not, an exception will be thrown.
+	    JSXParser.prototype.expectJSX = function (value) {
+	        var token = this.nextJSXToken();
+	        if (token.type !== token_1.Token.Punctuator || token.value !== value) {
+	            this.throwUnexpectedToken(token);
+	        }
+	    };
+	    // Return true if the next JSX token matches the specified punctuator.
+	    JSXParser.prototype.matchJSX = function (value) {
+	        var next = this.peekJSXToken();
+	        return next.type === token_1.Token.Punctuator && next.value === value;
+	    };
+	    JSXParser.prototype.parseJSXIdentifier = function () {
+	        var node = this.createJSXNode();
+	        var token = this.nextJSXToken();
+	        if (token.type !== JSXToken.Identifier) {
+	            this.throwUnexpectedToken(token);
+	        }
+	        return this.finalize(node, new JSXNode.JSXIdentifier(token.value));
+	    };
+	    JSXParser.prototype.parseJSXElementName = function () {
+	        var node = this.createJSXNode();
+	        var elementName = this.parseJSXIdentifier();
+	        if (this.matchJSX(':')) {
+	            var namespace = elementName;
+	            this.expectJSX(':');
+	            var name_1 = this.parseJSXIdentifier();
+	            elementName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_1));
+	        }
+	        else if (this.matchJSX('.')) {
+	            while (this.matchJSX('.')) {
+	                var object = elementName;
+	                this.expectJSX('.');
+	                var property = this.parseJSXIdentifier();
+	                elementName = this.finalize(node, new JSXNode.JSXMemberExpression(object, property));
+	            }
+	        }
+	        return elementName;
+	    };
+	    JSXParser.prototype.parseJSXAttributeName = function () {
+	        var node = this.createJSXNode();
+	        var attributeName;
+	        var identifier = this.parseJSXIdentifier();
+	        if (this.matchJSX(':')) {
+	            var namespace = identifier;
+	            this.expectJSX(':');
+	            var name_2 = this.parseJSXIdentifier();
+	            attributeName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_2));
+	        }
+	        else {
+	            attributeName = identifier;
+	        }
+	        return attributeName;
+	    };
+	    JSXParser.prototype.parseJSXStringLiteralAttribute = function () {
+	        var node = this.createJSXNode();
+	        var token = this.nextJSXToken();
+	        if (token.type !== token_1.Token.StringLiteral) {
+	            this.throwUnexpectedToken(token);
+	        }
+	        var raw = this.getTokenRaw(token);
+	        return this.finalize(node, new Node.Literal(token.value, raw));
+	    };
+	    JSXParser.prototype.parseJSXExpressionAttribute = function () {
+	        var node = this.createJSXNode();
+	        this.expectJSX('{');
+	        this.finishJSX();
+	        if (this.match('}')) {
+	            this.tolerateError('JSX attributes must only be assigned a non-empty expression');
+	        }
+	        var expression = this.parseAssignmentExpression();
+	        this.reenterJSX();
+	        return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));
+	    };
+	    JSXParser.prototype.parseJSXAttributeValue = function () {
+	        return this.matchJSX('{') ? this.parseJSXExpressionAttribute() :
+	            this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute();
+	    };
+	    JSXParser.prototype.parseJSXNameValueAttribute = function () {
+	        var node = this.createJSXNode();
+	        var name = this.parseJSXAttributeName();
+	        var value = null;
+	        if (this.matchJSX('=')) {
+	            this.expectJSX('=');
+	            value = this.parseJSXAttributeValue();
+	        }
+	        return this.finalize(node, new JSXNode.JSXAttribute(name, value));
+	    };
+	    JSXParser.prototype.parseJSXSpreadAttribute = function () {
+	        var node = this.createJSXNode();
+	        this.expectJSX('{');
+	        this.expectJSX('...');
+	        this.finishJSX();
+	        var argument = this.parseAssignmentExpression();
+	        this.reenterJSX();
+	        return this.finalize(node, new JSXNode.JSXSpreadAttribute(argument));
+	    };
+	    JSXParser.prototype.parseJSXAttributes = function () {
+	        var attributes = [];
+	        while (!this.matchJSX('/') && !this.matchJSX('>')) {
+	            var attribute = this.matchJSX('{') ? this.parseJSXSpreadAttribute() :
+	                this.parseJSXNameValueAttribute();
+	            attributes.push(attribute);
+	        }
+	        return attributes;
+	    };
+	    JSXParser.prototype.parseJSXOpeningElement = function () {
+	        var node = this.createJSXNode();
+	        this.expectJSX('<');
+	        var name = this.parseJSXElementName();
+	        var attributes = this.parseJSXAttributes();
+	        var selfClosing = this.matchJSX('/');
+	        if (selfClosing) {
+	            this.expectJSX('/');
+	        }
+	        this.expectJSX('>');
+	        return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));
+	    };
+	    JSXParser.prototype.parseJSXBoundaryElement = function () {
+	        var node = this.createJSXNode();
+	        this.expectJSX('<');
+	        if (this.matchJSX('/')) {
+	            this.expectJSX('/');
+	            var name_3 = this.parseJSXElementName();
+	            this.expectJSX('>');
+	            return this.finalize(node, new JSXNode.JSXClosingElement(name_3));
+	        }
+	        var name = this.parseJSXElementName();
+	        var attributes = this.parseJSXAttributes();
+	        var selfClosing = this.matchJSX('/');
+	        if (selfClosing) {
+	            this.expectJSX('/');
+	        }
+	        this.expectJSX('>');
+	        return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));
+	    };
+	    JSXParser.prototype.parseJSXEmptyExpression = function () {
+	        var node = this.createJSXChildNode();
+	        this.collectComments();
+	        this.lastMarker.index = this.scanner.index;
+	        this.lastMarker.lineNumber = this.scanner.lineNumber;
+	        this.lastMarker.lineStart = this.scanner.lineStart;
+	        return this.finalize(node, new JSXNode.JSXEmptyExpression());
+	    };
+	    JSXParser.prototype.parseJSXExpressionContainer = function () {
+	        var node = this.createJSXNode();
+	        this.expectJSX('{');
+	        var expression;
+	        if (this.matchJSX('}')) {
+	            expression = this.parseJSXEmptyExpression();
+	            this.expectJSX('}');
+	        }
+	        else {
+	            this.finishJSX();
+	            expression = this.parseAssignmentExpression();
+	            this.reenterJSX();
+	        }
+	        return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));
+	    };
+	    JSXParser.prototype.parseJSXChildren = function () {
+	        var children = [];
+	        while (!this.scanner.eof()) {
+	            var node = this.createJSXChildNode();
+	            var token = this.nextJSXText();
+	            if (token.start < token.end) {
+	                var raw = this.getTokenRaw(token);
+	                var child = this.finalize(node, new JSXNode.JSXText(token.value, raw));
+	                children.push(child);
+	            }
+	            if (this.scanner.source[this.scanner.index] === '{') {
+	                var container = this.parseJSXExpressionContainer();
+	                children.push(container);
+	            }
+	            else {
+	                break;
+	            }
+	        }
+	        return children;
+	    };
+	    JSXParser.prototype.parseComplexJSXElement = function (el) {
+	        var stack = [];
+	        while (!this.scanner.eof()) {
+	            el.children = el.children.concat(this.parseJSXChildren());
+	            var node = this.createJSXChildNode();
+	            var element = this.parseJSXBoundaryElement();
+	            if (element.type === jsx_syntax_1.JSXSyntax.JSXOpeningElement) {
+	                var opening = (element);
+	                if (opening.selfClosing) {
+	                    var child = this.finalize(node, new JSXNode.JSXElement(opening, [], null));
+	                    el.children.push(child);
+	                }
+	                else {
+	                    stack.push(el);
+	                    el = { node: node, opening: opening, closing: null, children: [] };
+	                }
+	            }
+	            if (element.type === jsx_syntax_1.JSXSyntax.JSXClosingElement) {
+	                el.closing = (element);
+	                var open_1 = getQualifiedElementName(el.opening.name);
+	                var close_1 = getQualifiedElementName(el.closing.name);
+	                if (open_1 !== close_1) {
+	                    this.tolerateError('Expected corresponding JSX closing tag for %0', open_1);
+	                }
+	                if (stack.length > 0) {
+	                    var child = this.finalize(el.node, new JSXNode.JSXElement(el.opening, el.children, el.closing));
+	                    el = stack[stack.length - 1];
+	                    el.children.push(child);
+	                    stack.pop();
+	                }
+	                else {
+	                    break;
+	                }
+	            }
+	        }
+	        return el;
+	    };
+	    JSXParser.prototype.parseJSXElement = function () {
+	        var node = this.createJSXNode();
+	        var opening = this.parseJSXOpeningElement();
+	        var children = [];
+	        var closing = null;
+	        if (!opening.selfClosing) {
+	            var el = this.parseComplexJSXElement({ node: node, opening: opening, closing: closing, children: children });
+	            children = el.children;
+	            closing = el.closing;
+	        }
+	        return this.finalize(node, new JSXNode.JSXElement(opening, children, closing));
+	    };
+	    JSXParser.prototype.parseJSXRoot = function () {
+	        // Pop the opening '<' added from the lookahead.
+	        if (this.config.tokens) {
+	            this.tokens.pop();
+	        }
+	        this.startJSX();
+	        var element = this.parseJSXElement();
+	        this.finishJSX();
+	        return element;
+	    };
+	    return JSXParser;
+	}(parser_1.Parser));
+	exports.JSXParser = JSXParser;
+
+
+/***/ },
+/* 12 */
+/***/ function(module, exports) {
+
+	// Generated by generate-xhtml-entities.js. DO NOT MODIFY!
+	"use strict";
+	exports.XHTMLEntities = {
+	    quot: '\u0022',
+	    amp: '\u0026',
+	    apos: '\u0027',
+	    gt: '\u003E',
+	    nbsp: '\u00A0',
+	    iexcl: '\u00A1',
+	    cent: '\u00A2',
+	    pound: '\u00A3',
+	    curren: '\u00A4',
+	    yen: '\u00A5',
+	    brvbar: '\u00A6',
+	    sect: '\u00A7',
+	    uml: '\u00A8',
+	    copy: '\u00A9',
+	    ordf: '\u00AA',
+	    laquo: '\u00AB',
+	    not: '\u00AC',
+	    shy: '\u00AD',
+	    reg: '\u00AE',
+	    macr: '\u00AF',
+	    deg: '\u00B0',
+	    plusmn: '\u00B1',
+	    sup2: '\u00B2',
+	    sup3: '\u00B3',
+	    acute: '\u00B4',
+	    micro: '\u00B5',
+	    para: '\u00B6',
+	    middot: '\u00B7',
+	    cedil: '\u00B8',
+	    sup1: '\u00B9',
+	    ordm: '\u00BA',
+	    raquo: '\u00BB',
+	    frac14: '\u00BC',
+	    frac12: '\u00BD',
+	    frac34: '\u00BE',
+	    iquest: '\u00BF',
+	    Agrave: '\u00C0',
+	    Aacute: '\u00C1',
+	    Acirc: '\u00C2',
+	    Atilde: '\u00C3',
+	    Auml: '\u00C4',
+	    Aring: '\u00C5',
+	    AElig: '\u00C6',
+	    Ccedil: '\u00C7',
+	    Egrave: '\u00C8',
+	    Eacute: '\u00C9',
+	    Ecirc: '\u00CA',
+	    Euml: '\u00CB',
+	    Igrave: '\u00CC',
+	    Iacute: '\u00CD',
+	    Icirc: '\u00CE',
+	    Iuml: '\u00CF',
+	    ETH: '\u00D0',
+	    Ntilde: '\u00D1',
+	    Ograve: '\u00D2',
+	    Oacute: '\u00D3',
+	    Ocirc: '\u00D4',
+	    Otilde: '\u00D5',
+	    Ouml: '\u00D6',
+	    times: '\u00D7',
+	    Oslash: '\u00D8',
+	    Ugrave: '\u00D9',
+	    Uacute: '\u00DA',
+	    Ucirc: '\u00DB',
+	    Uuml: '\u00DC',
+	    Yacute: '\u00DD',
+	    THORN: '\u00DE',
+	    szlig: '\u00DF',
+	    agrave: '\u00E0',
+	    aacute: '\u00E1',
+	    acirc: '\u00E2',
+	    atilde: '\u00E3',
+	    auml: '\u00E4',
+	    aring: '\u00E5',
+	    aelig: '\u00E6',
+	    ccedil: '\u00E7',
+	    egrave: '\u00E8',
+	    eacute: '\u00E9',
+	    ecirc: '\u00EA',
+	    euml: '\u00EB',
+	    igrave: '\u00EC',
+	    iacute: '\u00ED',
+	    icirc: '\u00EE',
+	    iuml: '\u00EF',
+	    eth: '\u00F0',
+	    ntilde: '\u00F1',
+	    ograve: '\u00F2',
+	    oacute: '\u00F3',
+	    ocirc: '\u00F4',
+	    otilde: '\u00F5',
+	    ouml: '\u00F6',
+	    divide: '\u00F7',
+	    oslash: '\u00F8',
+	    ugrave: '\u00F9',
+	    uacute: '\u00FA',
+	    ucirc: '\u00FB',
+	    uuml: '\u00FC',
+	    yacute: '\u00FD',
+	    thorn: '\u00FE',
+	    yuml: '\u00FF',
+	    OElig: '\u0152',
+	    oelig: '\u0153',
+	    Scaron: '\u0160',
+	    scaron: '\u0161',
+	    Yuml: '\u0178',
+	    fnof: '\u0192',
+	    circ: '\u02C6',
+	    tilde: '\u02DC',
+	    Alpha: '\u0391',
+	    Beta: '\u0392',
+	    Gamma: '\u0393',
+	    Delta: '\u0394',
+	    Epsilon: '\u0395',
+	    Zeta: '\u0396',
+	    Eta: '\u0397',
+	    Theta: '\u0398',
+	    Iota: '\u0399',
+	    Kappa: '\u039A',
+	    Lambda: '\u039B',
+	    Mu: '\u039C',
+	    Nu: '\u039D',
+	    Xi: '\u039E',
+	    Omicron: '\u039F',
+	    Pi: '\u03A0',
+	    Rho: '\u03A1',
+	    Sigma: '\u03A3',
+	    Tau: '\u03A4',
+	    Upsilon: '\u03A5',
+	    Phi: '\u03A6',
+	    Chi: '\u03A7',
+	    Psi: '\u03A8',
+	    Omega: '\u03A9',
+	    alpha: '\u03B1',
+	    beta: '\u03B2',
+	    gamma: '\u03B3',
+	    delta: '\u03B4',
+	    epsilon: '\u03B5',
+	    zeta: '\u03B6',
+	    eta: '\u03B7',
+	    theta: '\u03B8',
+	    iota: '\u03B9',
+	    kappa: '\u03BA',
+	    lambda: '\u03BB',
+	    mu: '\u03BC',
+	    nu: '\u03BD',
+	    xi: '\u03BE',
+	    omicron: '\u03BF',
+	    pi: '\u03C0',
+	    rho: '\u03C1',
+	    sigmaf: '\u03C2',
+	    sigma: '\u03C3',
+	    tau: '\u03C4',
+	    upsilon: '\u03C5',
+	    phi: '\u03C6',
+	    chi: '\u03C7',
+	    psi: '\u03C8',
+	    omega: '\u03C9',
+	    thetasym: '\u03D1',
+	    upsih: '\u03D2',
+	    piv: '\u03D6',
+	    ensp: '\u2002',
+	    emsp: '\u2003',
+	    thinsp: '\u2009',
+	    zwnj: '\u200C',
+	    zwj: '\u200D',
+	    lrm: '\u200E',
+	    rlm: '\u200F',
+	    ndash: '\u2013',
+	    mdash: '\u2014',
+	    lsquo: '\u2018',
+	    rsquo: '\u2019',
+	    sbquo: '\u201A',
+	    ldquo: '\u201C',
+	    rdquo: '\u201D',
+	    bdquo: '\u201E',
+	    dagger: '\u2020',
+	    Dagger: '\u2021',
+	    bull: '\u2022',
+	    hellip: '\u2026',
+	    permil: '\u2030',
+	    prime: '\u2032',
+	    Prime: '\u2033',
+	    lsaquo: '\u2039',
+	    rsaquo: '\u203A',
+	    oline: '\u203E',
+	    frasl: '\u2044',
+	    euro: '\u20AC',
+	    image: '\u2111',
+	    weierp: '\u2118',
+	    real: '\u211C',
+	    trade: '\u2122',
+	    alefsym: '\u2135',
+	    larr: '\u2190',
+	    uarr: '\u2191',
+	    rarr: '\u2192',
+	    darr: '\u2193',
+	    harr: '\u2194',
+	    crarr: '\u21B5',
+	    lArr: '\u21D0',
+	    uArr: '\u21D1',
+	    rArr: '\u21D2',
+	    dArr: '\u21D3',
+	    hArr: '\u21D4',
+	    forall: '\u2200',
+	    part: '\u2202',
+	    exist: '\u2203',
+	    empty: '\u2205',
+	    nabla: '\u2207',
+	    isin: '\u2208',
+	    notin: '\u2209',
+	    ni: '\u220B',
+	    prod: '\u220F',
+	    sum: '\u2211',
+	    minus: '\u2212',
+	    lowast: '\u2217',
+	    radic: '\u221A',
+	    prop: '\u221D',
+	    infin: '\u221E',
+	    ang: '\u2220',
+	    and: '\u2227',
+	    or: '\u2228',
+	    cap: '\u2229',
+	    cup: '\u222A',
+	    int: '\u222B',
+	    there4: '\u2234',
+	    sim: '\u223C',
+	    cong: '\u2245',
+	    asymp: '\u2248',
+	    ne: '\u2260',
+	    equiv: '\u2261',
+	    le: '\u2264',
+	    ge: '\u2265',
+	    sub: '\u2282',
+	    sup: '\u2283',
+	    nsub: '\u2284',
+	    sube: '\u2286',
+	    supe: '\u2287',
+	    oplus: '\u2295',
+	    otimes: '\u2297',
+	    perp: '\u22A5',
+	    sdot: '\u22C5',
+	    lceil: '\u2308',
+	    rceil: '\u2309',
+	    lfloor: '\u230A',
+	    rfloor: '\u230B',
+	    loz: '\u25CA',
+	    spades: '\u2660',
+	    clubs: '\u2663',
+	    hearts: '\u2665',
+	    diams: '\u2666',
+	    lang: '\u27E8',
+	    rang: '\u27E9'
+	};
+
+
+/***/ },
+/* 13 */
+/***/ function(module, exports) {
+
+	"use strict";
+	exports.JSXSyntax = {
+	    JSXAttribute: 'JSXAttribute',
+	    JSXClosingElement: 'JSXClosingElement',
+	    JSXElement: 'JSXElement',
+	    JSXEmptyExpression: 'JSXEmptyExpression',
+	    JSXExpressionContainer: 'JSXExpressionContainer',
+	    JSXIdentifier: 'JSXIdentifier',
+	    JSXMemberExpression: 'JSXMemberExpression',
+	    JSXNamespacedName: 'JSXNamespacedName',
+	    JSXOpeningElement: 'JSXOpeningElement',
+	    JSXSpreadAttribute: 'JSXSpreadAttribute',
+	    JSXText: 'JSXText'
+	};
+
+
+/***/ },
+/* 14 */
+/***/ function(module, exports, __webpack_require__) {
+
+	"use strict";
+	var jsx_syntax_1 = __webpack_require__(13);
+	var JSXClosingElement = (function () {
+	    function JSXClosingElement(name) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXClosingElement;
+	        this.name = name;
+	    }
+	    return JSXClosingElement;
+	}());
+	exports.JSXClosingElement = JSXClosingElement;
+	var JSXElement = (function () {
+	    function JSXElement(openingElement, children, closingElement) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXElement;
+	        this.openingElement = openingElement;
+	        this.children = children;
+	        this.closingElement = closingElement;
+	    }
+	    return JSXElement;
+	}());
+	exports.JSXElement = JSXElement;
+	var JSXEmptyExpression = (function () {
+	    function JSXEmptyExpression() {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXEmptyExpression;
+	    }
+	    return JSXEmptyExpression;
+	}());
+	exports.JSXEmptyExpression = JSXEmptyExpression;
+	var JSXExpressionContainer = (function () {
+	    function JSXExpressionContainer(expression) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXExpressionContainer;
+	        this.expression = expression;
+	    }
+	    return JSXExpressionContainer;
+	}());
+	exports.JSXExpressionContainer = JSXExpressionContainer;
+	var JSXIdentifier = (function () {
+	    function JSXIdentifier(name) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXIdentifier;
+	        this.name = name;
+	    }
+	    return JSXIdentifier;
+	}());
+	exports.JSXIdentifier = JSXIdentifier;
+	var JSXMemberExpression = (function () {
+	    function JSXMemberExpression(object, property) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXMemberExpression;
+	        this.object = object;
+	        this.property = property;
+	    }
+	    return JSXMemberExpression;
+	}());
+	exports.JSXMemberExpression = JSXMemberExpression;
+	var JSXAttribute = (function () {
+	    function JSXAttribute(name, value) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXAttribute;
+	        this.name = name;
+	        this.value = value;
+	    }
+	    return JSXAttribute;
+	}());
+	exports.JSXAttribute = JSXAttribute;
+	var JSXNamespacedName = (function () {
+	    function JSXNamespacedName(namespace, name) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXNamespacedName;
+	        this.namespace = namespace;
+	        this.name = name;
+	    }
+	    return JSXNamespacedName;
+	}());
+	exports.JSXNamespacedName = JSXNamespacedName;
+	var JSXOpeningElement = (function () {
+	    function JSXOpeningElement(name, selfClosing, attributes) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXOpeningElement;
+	        this.name = name;
+	        this.selfClosing = selfClosing;
+	        this.attributes = attributes;
+	    }
+	    return JSXOpeningElement;
+	}());
+	exports.JSXOpeningElement = JSXOpeningElement;
+	var JSXSpreadAttribute = (function () {
+	    function JSXSpreadAttribute(argument) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXSpreadAttribute;
+	        this.argument = argument;
+	    }
+	    return JSXSpreadAttribute;
+	}());
+	exports.JSXSpreadAttribute = JSXSpreadAttribute;
+	var JSXText = (function () {
+	    function JSXText(value, raw) {
+	        this.type = jsx_syntax_1.JSXSyntax.JSXText;
+	        this.value = value;
+	        this.raw = raw;
+	    }
+	    return JSXText;
+	}());
+	exports.JSXText = JSXText;
+
+
+/***/ },
+/* 15 */
+/***/ function(module, exports, __webpack_require__) {
+
+	"use strict";
+	var scanner_1 = __webpack_require__(8);
+	var error_handler_1 = __webpack_require__(6);
+	var token_1 = __webpack_require__(7);
+	var Reader = (function () {
+	    function Reader() {
+	        this.values = [];
+	        this.curly = this.paren = -1;
+	    }
+	    ;
+	    // A function following one of those tokens is an expression.
+	    Reader.prototype.beforeFunctionExpression = function (t) {
+	        return ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
+	            'return', 'case', 'delete', 'throw', 'void',
+	            // assignment operators
+	            '=', '+=', '-=', '*=', '**=', '/=', '%=', '<<=', '>>=', '>>>=',
+	            '&=', '|=', '^=', ',',
+	            // binary/unary operators
+	            '+', '-', '*', '**', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
+	            '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
+	            '<=', '<', '>', '!=', '!=='].indexOf(t) >= 0;
+	    };
+	    ;
+	    // Determine if forward slash (/) is an operator or part of a regular expression
+	    // https://github.com/mozilla/sweet.js/wiki/design
+	    Reader.prototype.isRegexStart = function () {
+	        var previous = this.values[this.values.length - 1];
+	        var regex = (previous !== null);
+	        switch (previous) {
+	            case 'this':
+	            case ']':
+	                regex = false;
+	                break;
+	            case ')':
+	                var check = this.values[this.paren - 1];
+	                regex = (check === 'if' || check === 'while' || check === 'for' || check === 'with');
+	                break;
+	            case '}':
+	                // Dividing a function by anything makes little sense,
+	                // but we have to check for that.
+	                regex = false;
+	                if (this.values[this.curly - 3] === 'function') {
+	                    // Anonymous function, e.g. function(){} /42
+	                    var check_1 = this.values[this.curly - 4];
+	                    regex = check_1 ? !this.beforeFunctionExpression(check_1) : false;
+	                }
+	                else if (this.values[this.curly - 4] === 'function') {
+	                    // Named function, e.g. function f(){} /42/
+	                    var check_2 = this.values[this.curly - 5];
+	                    regex = check_2 ? !this.beforeFunctionExpression(check_2) : true;
+	                }
+	        }
+	        return regex;
+	    };
+	    ;
+	    Reader.prototype.push = function (token) {
+	        if (token.type === token_1.Token.Punctuator || token.type === token_1.Token.Keyword) {
+	            if (token.value === '{') {
+	                this.curly = this.values.length;
+	            }
+	            else if (token.value === '(') {
+	                this.paren = this.values.length;
+	            }
+	            this.values.push(token.value);
+	        }
+	        else {
+	            this.values.push(null);
+	        }
+	    };
+	    ;
+	    return Reader;
+	}());
+	var Tokenizer = (function () {
+	    function Tokenizer(code, config) {
+	        this.errorHandler = new error_handler_1.ErrorHandler();
+	        this.errorHandler.tolerant = config ? (typeof config.tolerant === 'boolean' && config.tolerant) : false;
+	        this.scanner = new scanner_1.Scanner(code, this.errorHandler);
+	        this.scanner.trackComment = config ? (typeof config.comment === 'boolean' && config.comment) : false;
+	        this.trackRange = config ? (typeof config.range === 'boolean' && config.range) : false;
+	        this.trackLoc = config ? (typeof config.loc === 'boolean' && config.loc) : false;
+	        this.buffer = [];
+	        this.reader = new Reader();
+	    }
+	    ;
+	    Tokenizer.prototype.errors = function () {
+	        return this.errorHandler.errors;
+	    };
+	    ;
+	    Tokenizer.prototype.getNextToken = function () {
+	        if (this.buffer.length === 0) {
+	            var comments = this.scanner.scanComments();
+	            if (this.scanner.trackComment) {
+	                for (var i = 0; i < comments.length; ++i) {
+	                    var e = comments[i];
+	                    var comment = void 0;
+	                    var value = this.scanner.source.slice(e.slice[0], e.slice[1]);
+	                    comment = {
+	                        type: e.multiLine ? 'BlockComment' : 'LineComment',
+	                        value: value
+	                    };
+	                    if (this.trackRange) {
+	                        comment.range = e.range;
+	                    }
+	                    if (this.trackLoc) {
+	                        comment.loc = e.loc;
+	                    }
+	                    this.buffer.push(comment);
+	                }
+	            }
+	            if (!this.scanner.eof()) {
+	                var loc = void 0;
+	                if (this.trackLoc) {
+	                    loc = {
+	                        start: {
+	                            line: this.scanner.lineNumber,
+	                            column: this.scanner.index - this.scanner.lineStart
+	                        },
+	                        end: {}
+	                    };
+	                }
+	                var token = void 0;
+	                if (this.scanner.source[this.scanner.index] === '/') {
+	                    token = this.reader.isRegexStart() ? this.scanner.scanRegExp() : this.scanner.scanPunctuator();
+	                }
+	                else {
+	                    token = this.scanner.lex();
+	                }
+	                this.reader.push(token);
+	                var entry = void 0;
+	                entry = {
+	                    type: token_1.TokenName[token.type],
+	                    value: this.scanner.source.slice(token.start, token.end)
+	                };
+	                if (this.trackRange) {
+	                    entry.range = [token.start, token.end];
+	                }
+	                if (this.trackLoc) {
+	                    loc.end = {
+	                        line: this.scanner.lineNumber,
+	                        column: this.scanner.index - this.scanner.lineStart
+	                    };
+	                    entry.loc = loc;
+	                }
+	                if (token.regex) {
+	                    entry.regex = token.regex;
+	                }
+	                this.buffer.push(entry);
+	            }
+	        }
+	        return this.buffer.shift();
+	    };
+	    ;
+	    return Tokenizer;
+	}());
+	exports.Tokenizer = Tokenizer;
+
+
+/***/ }
+/******/ ])
+});
+;
\ No newline at end of file
diff --git a/tooling/talertest/selenium/instrumenter.js b/tooling/talertest/selenium/instrumenter.js
new file mode 100644
index 000000000..61c02cf09
--- /dev/null
+++ b/tooling/talertest/selenium/instrumenter.js
@@ -0,0 +1,1097 @@
+/*
+ Copyright (c) 2012, Yahoo! Inc.  All rights reserved.
+ Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+
+/*global esprima, escodegen, window */
+(function (isNode) {
+    "use strict";
+    var SYNTAX,
+        nodeType,
+        ESP = isNode ? require('esprima') : esprima,
+        ESPGEN = isNode ? require('escodegen') : escodegen,  //TODO - package as dependency
+        crypto = isNode ? require('crypto') : null,
+        LEADER_WRAP = '(function () { ',
+        TRAILER_WRAP = '\n}());',
+        COMMENT_RE = /^\s*istanbul\s+ignore\s+(if|else|next)(?=\W|$)/,
+        astgen,
+        preconditions,
+        cond,
+        isArray = Array.isArray;
+
+    /* istanbul ignore if: untestable */
+    if (!isArray) {
+        isArray = function (thing) { return thing &&  Object.prototype.toString.call(thing) === '[object Array]'; };
+    }
+
+    if (!isNode) {
+        preconditions = {
+            'Could not find esprima': ESP,
+            'Could not find escodegen': ESPGEN,
+            'JSON object not in scope': JSON,
+            'Array does not implement push': [].push,
+            'Array does not implement unshift': [].unshift
+        };
+        /* istanbul ignore next: untestable */
+        for (cond in preconditions) {
+            if (preconditions.hasOwnProperty(cond)) {
+                if (!preconditions[cond]) { throw new Error(cond); }
+            }
+        }
+    }
+
+    function generateTrackerVar(filename, omitSuffix) {
+        var hash, suffix;
+        if (crypto !== null) {
+            hash = crypto.createHash('md5');
+            hash.update(filename);
+            suffix = hash.digest('base64');
+            //trim trailing equal signs, turn identifier unsafe chars to safe ones + => _ and / => $
+            suffix = suffix.replace(new RegExp('=', 'g'), '')
+                .replace(new RegExp('\\+', 'g'), '_')
+                .replace(new RegExp('/', 'g'), '$');
+        } else {
+            window.__cov_seq = window.__cov_seq || 0;
+            window.__cov_seq += 1;
+            suffix = window.__cov_seq;
+        }
+        return '__cov_' + (omitSuffix ? '' : suffix);
+    }
+
+    function pushAll(ary, thing) {
+        if (!isArray(thing)) {
+            thing = [ thing ];
+        }
+        Array.prototype.push.apply(ary, thing);
+    }
+
+    SYNTAX = {
+        // keep in sync with estraverse's VisitorKeys
+        AssignmentExpression: ['left', 'right'],
+        AssignmentPattern: ['left', 'right'],
+        ArrayExpression: ['elements'],
+        ArrayPattern: ['elements'],
+        ArrowFunctionExpression: ['params', 'body'],
+        AwaitExpression: ['argument'], // CAUTION: It's deferred to ES7.
+        BlockStatement: ['body'],
+        BinaryExpression: ['left', 'right'],
+        BreakStatement: ['label'],
+        CallExpression: ['callee', 'arguments'],
+        CatchClause: ['param', 'body'],
+        ClassBody: ['body'],
+        ClassDeclaration: ['id', 'superClass', 'body'],
+        ClassExpression: ['id', 'superClass', 'body'],
+        ComprehensionBlock: ['left', 'right'],  // CAUTION: It's deferred to ES7.
+        ComprehensionExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
+        ConditionalExpression: ['test', 'consequent', 'alternate'],
+        ContinueStatement: ['label'],
+        DebuggerStatement: [],
+        DirectiveStatement: [],
+        DoWhileStatement: ['body', 'test'],
+        EmptyStatement: [],
+        ExportAllDeclaration: ['source'],
+        ExportDefaultDeclaration: ['declaration'],
+        ExportNamedDeclaration: ['declaration', 'specifiers', 'source'],
+        ExportSpecifier: ['exported', 'local'],
+        ExpressionStatement: ['expression'],
+        ForStatement: ['init', 'test', 'update', 'body'],
+        ForInStatement: ['left', 'right', 'body'],
+        ForOfStatement: ['left', 'right', 'body'],
+        FunctionDeclaration: ['id', 'params', 'body'],
+        FunctionExpression: ['id', 'params', 'body'],
+        GeneratorExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
+        Identifier: [],
+        IfStatement: ['test', 'consequent', 'alternate'],
+        ImportDeclaration: ['specifiers', 'source'],
+        ImportDefaultSpecifier: ['local'],
+        ImportNamespaceSpecifier: ['local'],
+        ImportSpecifier: ['imported', 'local'],
+        Literal: [],
+        LabeledStatement: ['label', 'body'],
+        LogicalExpression: ['left', 'right'],
+        MetaProperty: ['meta', 'property'],
+        MemberExpression: ['object', 'property'],
+        MethodDefinition: ['key', 'value'],
+        ModuleSpecifier: [],
+        NewExpression: ['callee', 'arguments'],
+        ObjectExpression: ['properties'],
+        ObjectPattern: ['properties'],
+        Program: ['body'],
+        Property: ['key', 'value'],
+        RestElement: [ 'argument' ],
+        ReturnStatement: ['argument'],
+        SequenceExpression: ['expressions'],
+        SpreadElement: ['argument'],
+        Super: [],
+        SwitchStatement: ['discriminant', 'cases'],
+        SwitchCase: ['test', 'consequent'],
+        TaggedTemplateExpression: ['tag', 'quasi'],
+        TemplateElement: [],
+        TemplateLiteral: ['quasis', 'expressions'],
+        ThisExpression: [],
+        ThrowStatement: ['argument'],
+        TryStatement: ['block', 'handler', 'finalizer'],
+        UnaryExpression: ['argument'],
+        UpdateExpression: ['argument'],
+        VariableDeclaration: ['declarations'],
+        VariableDeclarator: ['id', 'init'],
+        WhileStatement: ['test', 'body'],
+        WithStatement: ['object', 'body'],
+        YieldExpression: ['argument']
+    };
+
+    for (nodeType in SYNTAX) {
+        /* istanbul ignore else: has own property */
+        if (SYNTAX.hasOwnProperty(nodeType)) {
+            SYNTAX[nodeType] = { name: nodeType, children: SYNTAX[nodeType] };
+        }
+    }
+
+    astgen = {
+        variable: function (name) { return { type: SYNTAX.Identifier.name, name: name }; },
+        stringLiteral: function (str) { return { type: SYNTAX.Literal.name, value: String(str) }; },
+        numericLiteral: function (num) { return { type: SYNTAX.Literal.name, value: Number(num) }; },
+        statement: function (contents) { return { type: SYNTAX.ExpressionStatement.name, expression: contents }; },
+        dot: function (obj, field) { return { type: SYNTAX.MemberExpression.name, computed: false, object: obj, property: field }; },
+        subscript: function (obj, sub) { return { type: SYNTAX.MemberExpression.name, computed: true, object: obj, property: sub }; },
+        postIncrement: function (obj) { return { type: SYNTAX.UpdateExpression.name, operator: '++', prefix: false, argument: obj }; },
+        sequence: function (one, two) { return { type: SYNTAX.SequenceExpression.name, expressions: [one, two] }; },
+        returnStatement: function (expr) { return { type: SYNTAX.ReturnStatement.name, argument: expr }; }
+    };
+
+    function Walker(walkMap, preprocessor, scope, debug) {
+        this.walkMap = walkMap;
+        this.preprocessor = preprocessor;
+        this.scope = scope;
+        this.debug = debug;
+        if (this.debug) {
+            this.level = 0;
+            this.seq = true;
+        }
+    }
+
+    function defaultWalker(node, walker) {
+
+        var type = node.type,
+            preprocessor,
+            postprocessor,
+            children = SYNTAX[type],
+            // don't run generated nodes thru custom walks otherwise we will attempt to instrument the instrumentation code :)
+            applyCustomWalker = !!node.loc || node.type === SYNTAX.Program.name,
+            walkerFn = applyCustomWalker ? walker.walkMap[type] : null,
+            i,
+            j,
+            walkFnIndex,
+            childType,
+            childNode,
+            ret,
+            childArray,
+            childElement,
+            pathElement,
+            assignNode,
+            isLast;
+
+        if (!SYNTAX[type]) {
+            console.error(node);
+            console.error('Unsupported node type:' + type);
+            return;
+        }
+        children = SYNTAX[type].children;
+        /* istanbul ignore if: guard */
+        if (node.walking) { throw new Error('Infinite regress: Custom walkers may NOT call walker.apply(node)'); }
+        node.walking = true;
+
+        ret = walker.apply(node, walker.preprocessor);
+
+        preprocessor = ret.preprocessor;
+        if (preprocessor) {
+            delete ret.preprocessor;
+            ret = walker.apply(node, preprocessor);
+        }
+
+        if (isArray(walkerFn)) {
+            for (walkFnIndex = 0; walkFnIndex < walkerFn.length; walkFnIndex += 1) {
+                isLast = walkFnIndex === walkerFn.length - 1;
+                ret = walker.apply(ret, walkerFn[walkFnIndex]);
+                /*istanbul ignore next: paranoid check */
+                if (ret.type !== type && !isLast) {
+                    throw new Error('Only the last walker is allowed to change the node type: [type was: ' + type + ' ]');
+                }
+            }
+        } else {
+            if (walkerFn) {
+                ret = walker.apply(node, walkerFn);
+            }
+        }
+
+        if (node.skipSelf) {
+            return;
+        }
+
+        for (i = 0; i < children.length; i += 1) {
+            childType = children[i];
+            childNode = node[childType];
+            if (childNode && !childNode.skipWalk) {
+                pathElement = { node: node, property: childType };
+                if (isArray(childNode)) {
+                    childArray = [];
+                    for (j = 0; j < childNode.length; j += 1) {
+                        childElement = childNode[j];
+                        pathElement.index = j;
+                        if (childElement) {
+                          assignNode = walker.apply(childElement, null, pathElement);
+                          if (isArray(assignNode.prepend)) {
+                              pushAll(childArray, assignNode.prepend);
+                              delete assignNode.prepend;
+                          }
+                        } else {
+                            assignNode = undefined;
+                        }
+                        pushAll(childArray, assignNode);
+                    }
+                    node[childType] = childArray;
+                } else {
+                    assignNode = walker.apply(childNode, null, pathElement);
+                    /*istanbul ignore if: paranoid check */
+                    if (isArray(assignNode.prepend)) {
+                        throw new Error('Internal error: attempt to prepend statements in disallowed (non-array) context');
+                        /* if this should be allowed, this is how to solve it
+                        tmpNode = { type: 'BlockStatement', body: [] };
+                        pushAll(tmpNode.body, assignNode.prepend);
+                        pushAll(tmpNode.body, assignNode);
+                        node[childType] = tmpNode;
+                        delete assignNode.prepend;
+                        */
+                    } else {
+                        node[childType] = assignNode;
+                    }
+                }
+            }
+        }
+
+        postprocessor = ret.postprocessor;
+        if (postprocessor) {
+            delete ret.postprocessor;
+            ret = walker.apply(ret, postprocessor);
+        }
+
+        delete node.walking;
+
+        return ret;
+    }
+
+    Walker.prototype = {
+        startWalk: function (node) {
+            this.path = [];
+            this.apply(node);
+        },
+
+        apply: function (node, walkFn, pathElement) {
+            var ret, i, seq, prefix;
+
+            walkFn = walkFn || defaultWalker;
+            if (this.debug) {
+                this.seq += 1;
+                this.level += 1;
+                seq = this.seq;
+                prefix = '';
+                for (i = 0; i < this.level; i += 1) { prefix += '    '; }
+                console.log(prefix + 'Enter (' + seq + '):' + node.type);
+            }
+            if (pathElement) { this.path.push(pathElement); }
+            ret = walkFn.call(this.scope, node, this);
+            if (pathElement) { this.path.pop(); }
+            if (this.debug) {
+                this.level -= 1;
+                console.log(prefix + 'Return (' + seq + '):' + node.type);
+            }
+            return ret || node;
+        },
+
+        startLineForNode: function (node) {
+            return node && node.loc && node.loc.start ? node.loc.start.line : /* istanbul ignore next: guard */ null;
+        },
+
+        ancestor: function (n) {
+            return this.path.length > n - 1 ? this.path[this.path.length - n] : /* istanbul ignore next: guard */ null;
+        },
+
+        parent: function () {
+            return this.ancestor(1);
+        },
+
+        isLabeled: function () {
+            var el = this.parent();
+            return el && el.node.type === SYNTAX.LabeledStatement.name;
+        }
+    };
+
+    /**
+     * mechanism to instrument code for coverage. It uses the `esprima` and
+     * `escodegen` libraries for JS parsing and code generation respectively.
+     *
+     * Works on `node` as well as the browser.
+     *
+     * Usage on nodejs
+     * ---------------
+     *
+     *      var instrumenter = new require('istanbul').Instrumenter(),
+     *          changed = instrumenter.instrumentSync('function meaningOfLife() { return 42; }', 'filename.js');
+     *
+     * Usage in a browser
+     * ------------------
+     *
+     * Load `esprima.js`, `escodegen.js` and `instrumenter.js` (this file) using `script` tags or other means.
+     *
+     * Create an instrumenter object as:
+     *
+     *      var instrumenter = new Instrumenter(),
+     *          changed = instrumenter.instrumentSync('function meaningOfLife() { return 42; }', 'filename.js');
+     *
+     * Aside from demonstration purposes, it is unclear why you would want to instrument code in a browser.
+     *
+     * @class Instrumenter
+     * @constructor
+     * @param {Object} options Optional. Configuration options.
+     * @param {String} [options.coverageVariable] the global variable name to use for
+     *      tracking coverage. Defaults to `__coverage__`
+     * @param {Boolean} [options.embedSource] whether to embed the source code of every
+     *      file as an array in the file coverage object for that file. Defaults to `false`
+     * @param {Boolean} [options.preserveComments] whether comments should be preserved in the output. Defaults to `false`
+     * @param {Boolean} [options.noCompact] emit readable code when set. Defaults to `false`
+     * @param {Boolean} [options.esModules] whether the code to instrument contains uses es
+     *      imports or exports.
+     * @param {Boolean} [options.noAutoWrap] do not automatically wrap the source in
+     *      an anonymous function before covering it. By default, code is wrapped in
+     *      an anonymous function before it is parsed. This is done because
+     *      some nodejs libraries have `return` statements outside of
+     *      a function which is technically invalid Javascript and causes the parser to fail.
+     *      This construct, however, works correctly in node since module loading
+     *      is done in the context of an anonymous function.
+     *
+     * Note that the semantics of the code *returned* by the instrumenter does not change in any way.
+     * The function wrapper is "unwrapped" before the instrumented code is generated.
+     * @param {Object} [options.codeGenerationOptions] an object that is directly passed to the `escodegen`
+     *      library as configuration for code generation. The `noCompact` setting is not honored when this
+     *      option is specified
+     * @param {Boolean} [options.debug] assist in debugging. Currently, the only effect of
+     *      setting this option is a pretty-print of the coverage variable. Defaults to `false`
+     * @param {Boolean} [options.walkDebug] assist in debugging of the AST walker used by this class.
+     *
+     */
+    function Instrumenter(options) {
+        this.opts = options || {
+            debug: false,
+            walkDebug: false,
+            coverageVariable: '__coverage__',
+            codeGenerationOptions: undefined,
+            noAutoWrap: false,
+            noCompact: false,
+            embedSource: false,
+            preserveComments: false,
+            esModules: false
+        };
+
+        if (this.opts.esModules && !this.opts.noAutoWrap) {
+            this.opts.noAutoWrap = true;
+            if (this.opts.debug) {
+                console.log('Setting noAutoWrap to true as required by esModules');
+            }
+        }
+
+        this.walker = new Walker({
+            ArrowFunctionExpression: [ this.arrowBlockConverter ],
+            ExpressionStatement: this.coverStatement,
+            ExportNamedDeclaration: this.coverExport,
+            BreakStatement: this.coverStatement,
+            ContinueStatement: this.coverStatement,
+            DebuggerStatement: this.coverStatement,
+            ReturnStatement: this.coverStatement,
+            ThrowStatement: this.coverStatement,
+            TryStatement: [ this.paranoidHandlerCheck, this.coverStatement],
+            VariableDeclaration: this.coverStatement,
+            IfStatement: [ this.ifBlockConverter, this.coverStatement, this.ifBranchInjector ],
+            ForStatement: [ this.skipInit, this.loopBlockConverter, this.coverStatement ],
+            ForInStatement: [ this.skipLeft, this.loopBlockConverter, this.coverStatement ],
+            ForOfStatement: [ this.skipLeft, this.loopBlockConverter, this.coverStatement ],
+            WhileStatement: [ this.loopBlockConverter, this.coverStatement ],
+            DoWhileStatement: [ this.loopBlockConverter, this.coverStatement ],
+            SwitchStatement: [ this.coverStatement, this.switchBranchInjector ],
+            SwitchCase: [ this.switchCaseInjector ],
+            WithStatement: [ this.withBlockConverter, this.coverStatement ],
+            FunctionDeclaration: [ this.coverFunction, this.coverStatement ],
+            FunctionExpression: this.coverFunction,
+            LabeledStatement: this.coverStatement,
+            ConditionalExpression: this.conditionalBranchInjector,
+            LogicalExpression: this.logicalExpressionBranchInjector,
+            ObjectExpression: this.maybeAddType,
+            MetaProperty: this.coverMetaProperty,
+        }, this.extractCurrentHint, this, this.opts.walkDebug);
+
+        //unit testing purposes only
+        if (this.opts.backdoor && this.opts.backdoor.omitTrackerSuffix) {
+            this.omitTrackerSuffix = true;
+        }
+    }
+
+    Instrumenter.prototype = {
+        /**
+         * synchronous instrumentation method. Throws when illegal code is passed to it
+         * @method instrumentSync
+         * @param {String} code the code to be instrumented as a String
+         * @param {String} filename Optional. The name of the file from which
+         *  the code was read. A temporary filename is generated when not specified.
+         *  Not specifying a filename is only useful for unit tests and demonstrations
+         *  of this library.
+         */
+        instrumentSync: function (code, filename) {
+            var program;
+
+            //protect from users accidentally passing in a Buffer object instead
+            if (typeof code !== 'string') { throw new Error('Code must be string'); }
+            if (code.charAt(0) === '#') { //shebang, 'comment' it out, won't affect syntax tree locations for things we care about
+                code = '//' + code;
+            }
+            if (!this.opts.noAutoWrap) {
+                code = LEADER_WRAP + code + TRAILER_WRAP;
+            }
+            try {
+                program = ESP.parse(code, {
+                    loc: true,
+                    range: true,
+                    tokens: this.opts.preserveComments,
+                    comment: true,
+                    sourceType: this.opts.esModules ? 'module' : 'script'
+                });
+            } catch (e) {
+                console.log('Failed to parse file: ' + filename);
+                throw e;
+            }
+            if (this.opts.preserveComments) {
+                program = ESPGEN.attachComments(program, program.comments, program.tokens);
+            }
+            if (!this.opts.noAutoWrap) {
+                program = {
+                    type: SYNTAX.Program.name,
+                    body: program.body[0].expression.callee.body.body,
+                    comments: program.comments
+                };
+            }
+            return this.instrumentASTSync(program, filename, code);
+        },
+        filterHints: function (comments) {
+            var ret = [],
+                i,
+                comment,
+                groups;
+            if (!(comments && isArray(comments))) {
+                return ret;
+            }
+            for (i = 0; i < comments.length; i += 1) {
+                comment = comments[i];
+                /* istanbul ignore else: paranoid check */
+                if (comment && comment.value && comment.range && isArray(comment.range)) {
+                    groups = String(comment.value).match(COMMENT_RE);
+                    if (groups) {
+                        ret.push({ type: groups[1], start: comment.range[0], end: comment.range[1] });
+                    }
+                }
+            }
+            return ret;
+        },
+        extractCurrentHint: function (node) {
+            if (!node.range) { return; }
+            var i = this.currentState.lastHintPosition + 1,
+                hints = this.currentState.hints,
+                nodeStart = node.range[0],
+                hint;
+            this.currentState.currentHint = null;
+            while (i < hints.length) {
+                hint = hints[i];
+                if (hint.end < nodeStart) {
+                    this.currentState.currentHint = hint;
+                    this.currentState.lastHintPosition = i;
+                    i += 1;
+                } else {
+                    break;
+                }
+            }
+        },
+        /**
+         * synchronous instrumentation method that instruments an AST instead.
+         * @method instrumentASTSync
+         * @param {String} program the AST to be instrumented
+         * @param {String} filename Optional. The name of the file from which
+         *  the code was read. A temporary filename is generated when not specified.
+         *  Not specifying a filename is only useful for unit tests and demonstrations
+         *  of this library.
+         *  @param {String} originalCode the original code corresponding to the AST,
+         *  used for embedding the source into the coverage object
+         */
+        instrumentASTSync: function (program, filename, originalCode) {
+            var usingStrict = false,
+                codegenOptions,
+                generated,
+                preamble,
+                lineCount,
+                i;
+            filename = filename || String(new Date().getTime()) + '.js';
+            this.sourceMap = null;
+            this.coverState = {
+                path: filename,
+                s: {},
+                b: {},
+                f: {},
+                fnMap: {},
+                statementMap: {},
+                branchMap: {}
+            };
+            this.currentState = {
+                trackerVar: generateTrackerVar(filename, this.omitTrackerSuffix),
+                func: 0,
+                branch: 0,
+                variable: 0,
+                statement: 0,
+                hints: this.filterHints(program.comments),
+                currentHint: null,
+                lastHintPosition: -1,
+                ignoring: 0
+            };
+            if (program.body && program.body.length > 0 && this.isUseStrictExpression(program.body[0])) {
+                //nuke it
+                program.body.shift();
+                //and add it back at code generation time
+                usingStrict = true;
+            }
+            this.walker.startWalk(program);
+            codegenOptions = this.opts.codeGenerationOptions || { format: { compact: !this.opts.noCompact }};
+            codegenOptions.comment = this.opts.preserveComments;
+            //console.log(JSON.stringify(program, undefined, 2));
+
+            generated = ESPGEN.generate(program, codegenOptions);
+            preamble = this.getPreamble(originalCode || '', usingStrict);
+
+            if (generated.map && generated.code) {
+                lineCount = preamble.split(/\r\n|\r|\n/).length;
+                // offset all the generated line numbers by the number of lines in the preamble
+                for (i = 0; i < generated.map._mappings._array.length; i += 1) {
+                    generated.map._mappings._array[i].generatedLine += lineCount;
+                }
+                this.sourceMap = generated.map;
+                generated = generated.code;
+            }
+
+            return preamble + '\n' + generated + '\n';
+        },
+        /**
+         * Callback based instrumentation. Note that this still executes synchronously in the same process tick
+         * and calls back immediately. It only provides the options for callback style error handling as
+         * opposed to a `try-catch` style and nothing more. Implemented as a wrapper over `instrumentSync`
+         *
+         * @method instrument
+         * @param {String} code the code to be instrumented as a String
+         * @param {String} filename Optional. The name of the file from which
+         *  the code was read. A temporary filename is generated when not specified.
+         *  Not specifying a filename is only useful for unit tests and demonstrations
+         *  of this library.
+         * @param {Function(err, instrumentedCode)} callback - the callback function
+         */
+        instrument: function (code, filename, callback) {
+
+            if (!callback && typeof filename === 'function') {
+                callback = filename;
+                filename = null;
+            }
+            try {
+                callback(null, this.instrumentSync(code, filename));
+            } catch (ex) {
+                callback(ex);
+            }
+        },
+        /**
+         * returns the file coverage object for the code that was instrumented
+         * just before calling this method. Note that this represents a
+         * "zero-coverage" object which is not even representative of the code
+         * being loaded in node or a browser (which would increase the statement
+         * counts for mainline code).
+         * @method lastFileCoverage
+         * @return {Object} a "zero-coverage" file coverage object for the code last instrumented
+         * by this instrumenter
+         */
+        lastFileCoverage: function () {
+            return this.coverState;
+        },
+        /**
+         * returns the source map object for the code that was instrumented
+         * just before calling this method.
+         * @method lastSourceMap
+         * @return {Object} a source map object for the code last instrumented
+         * by this instrumenter
+         */
+        lastSourceMap: function () {
+            return this.sourceMap;
+        },
+        fixColumnPositions: function (coverState) {
+            var offset = LEADER_WRAP.length,
+                fixer = function (loc) {
+                    if (loc.start.line === 1) {
+                        loc.start.column -= offset;
+                    }
+                    if (loc.end.line === 1) {
+                        loc.end.column -= offset;
+                    }
+                },
+                k,
+                obj,
+                i,
+                locations;
+
+            obj = coverState.statementMap;
+            for (k in obj) {
+                /* istanbul ignore else: has own property */
+                if (obj.hasOwnProperty(k)) { fixer(obj[k]); }
+            }
+            obj = coverState.fnMap;
+            for (k in obj) {
+                /* istanbul ignore else: has own property */
+                if (obj.hasOwnProperty(k)) { fixer(obj[k].loc); }
+            }
+            obj = coverState.branchMap;
+            for (k in obj) {
+                /* istanbul ignore else: has own property */
+                if (obj.hasOwnProperty(k)) {
+                    locations = obj[k].locations;
+                    for (i = 0; i < locations.length; i += 1) {
+                        fixer(locations[i]);
+                    }
+                }
+            }
+        },
+
+        getPreamble: function (sourceCode, emitUseStrict) {
+            var varName = this.opts.coverageVariable || '__coverage__',
+                file = this.coverState.path.replace(/\\/g, '\\\\'),
+                tracker = this.currentState.trackerVar,
+                coverState,
+                strictLine = emitUseStrict ? '"use strict";' : '',
+                // return replacements using the function to ensure that the replacement is
+                // treated like a dumb string and not as a string with RE replacement patterns
+                replacer = function (s) {
+                    return function () { return s; };
+                },
+                code;
+            if (!this.opts.noAutoWrap) {
+                this.fixColumnPositions(this.coverState);
+            }
+            if (this.opts.embedSource) {
+                this.coverState.code = sourceCode.split(/(?:\r?\n)|\r/);
+            }
+            coverState = this.opts.debug ? JSON.stringify(this.coverState, undefined, 4) : JSON.stringify(this.coverState);
+            code = [
+                "%STRICT%",
+                "var %VAR% = (Function('return this'))();",
+                "if (!%VAR%.%GLOBAL%) { %VAR%.%GLOBAL% = {}; }",
+                "%VAR% = %VAR%.%GLOBAL%;",
+                "if (!(%VAR%['%FILE%'])) {",
+                "   %VAR%['%FILE%'] = %OBJECT%;",
+                "}",
+                "%VAR% = %VAR%['%FILE%'];"
+            ].join("\n")
+                .replace(/%STRICT%/g, replacer(strictLine))
+                .replace(/%VAR%/g, replacer(tracker))
+                .replace(/%GLOBAL%/g, replacer(varName))
+                .replace(/%FILE%/g, replacer(file))
+                .replace(/%OBJECT%/g, replacer(coverState));
+            return code;
+        },
+
+        startIgnore: function () {
+            this.currentState.ignoring += 1;
+        },
+
+        endIgnore: function () {
+            this.currentState.ignoring -= 1;
+        },
+
+        convertToBlock: function (node) {
+            if (!node) {
+                return { type: 'BlockStatement', body: [] };
+            } else if (node.type === 'BlockStatement') {
+                return node;
+            } else {
+                return { type: 'BlockStatement', body: [ node ] };
+            }
+        },
+
+        arrowBlockConverter: function (node) {
+            var retStatement;
+            if (node.expression) { // turn expression nodes into a block with a return statement
+                retStatement = astgen.returnStatement(node.body);
+                // ensure the generated return statement is covered
+                retStatement.loc = node.body.loc;
+                node.body = this.convertToBlock(retStatement);
+                node.expression = false;
+            }
+        },
+
+        paranoidHandlerCheck: function (node) {
+            // if someone is using an older esprima on the browser
+            // convert handlers array to single handler attribute
+            // containing its first element
+            /* istanbul ignore next */
+            if (!node.handler && node.handlers) {
+                node.handler = node.handlers[0];
+            }
+        },
+
+        ifBlockConverter: function (node) {
+            node.consequent = this.convertToBlock(node.consequent);
+            node.alternate = this.convertToBlock(node.alternate);
+        },
+
+        loopBlockConverter: function (node) {
+            node.body = this.convertToBlock(node.body);
+        },
+
+        withBlockConverter: function (node) {
+            node.body = this.convertToBlock(node.body);
+        },
+
+        statementName: function (location, initValue) {
+            var sName,
+                ignoring = !!this.currentState.ignoring;
+
+            location.skip = ignoring || undefined;
+            initValue = initValue || 0;
+            this.currentState.statement += 1;
+            sName = this.currentState.statement;
+            this.coverState.statementMap[sName] = location;
+            this.coverState.s[sName] = initValue;
+            return sName;
+        },
+
+        skipInit: function (node /*, walker */) {
+            if (node.init) {
+                node.init.skipWalk = true;
+            }
+        },
+
+        skipLeft: function (node /*, walker */) {
+            node.left.skipWalk = true;
+        },
+
+        isUseStrictExpression: function (node) {
+            return node && node.type === SYNTAX.ExpressionStatement.name &&
+                node.expression  && node.expression.type === SYNTAX.Literal.name &&
+                node.expression.value === 'use strict';
+        },
+
+        maybeSkipNode: function (node, type) {
+            var alreadyIgnoring = !!this.currentState.ignoring,
+                hint = this.currentState.currentHint,
+                ignoreThis = !alreadyIgnoring && hint && hint.type === type;
+
+            if (ignoreThis) {
+                this.startIgnore();
+                node.postprocessor = this.endIgnore;
+                return true;
+            }
+            return false;
+        },
+
+        coverMetaProperty: function(node /* , walker */) {
+           node.skipSelf = true;
+        },
+
+        coverStatement: function (node, walker) {
+            var sName,
+                incrStatementCount,
+                parent,
+                grandParent;
+
+            this.maybeSkipNode(node, 'next');
+
+            if (this.isUseStrictExpression(node)) {
+                grandParent = walker.ancestor(2);
+                /* istanbul ignore else: difficult to test */
+                if (grandParent) {
+                    if ((grandParent.node.type === SYNTAX.FunctionExpression.name ||
+                        grandParent.node.type === SYNTAX.FunctionDeclaration.name)  &&
+                        walker.parent().node.body[0] === node) {
+                        return;
+                    }
+                }
+            }
+
+            if (node.type === SYNTAX.FunctionDeclaration.name) {
+                // Called for the side-effect of setting the function's statement count to 1.
+                this.statementName(node.loc, 1);
+            } else {
+                // We let `coverExport` handle ExportNamedDeclarations.
+                parent = walker.parent();
+                if (parent && parent.node.type === SYNTAX.ExportNamedDeclaration.name) {
+                    return;
+                }
+
+                sName = this.statementName(node.loc);
+
+                incrStatementCount = astgen.statement(
+                    astgen.postIncrement(
+                        astgen.subscript(
+                            astgen.dot(astgen.variable(this.currentState.trackerVar), astgen.variable('s')),
+                            astgen.stringLiteral(sName)
+                        )
+                    )
+                );
+
+                this.splice(incrStatementCount, node, walker);
+            }
+        },
+
+        coverExport: function (node, walker) {
+            var sName, incrStatementCount;
+
+            if ( !node.declaration || !node.declaration.declarations ) { return; }
+
+            this.maybeSkipNode(node, 'next');
+
+            sName = this.statementName(node.declaration.loc);
+            incrStatementCount = astgen.statement(
+                astgen.postIncrement(
+                    astgen.subscript(
+                        astgen.dot(astgen.variable(this.currentState.trackerVar), astgen.variable('s')),
+                        astgen.stringLiteral(sName)
+                    )
+                )
+            );
+
+            this.splice(incrStatementCount, node, walker);
+        },
+
+        splice: function (statements, node, walker) {
+            var targetNode = walker.isLabeled() ? walker.parent().node : node;
+            targetNode.prepend = targetNode.prepend || [];
+            pushAll(targetNode.prepend, statements);
+        },
+
+        functionName: function (node, line, location) {
+            this.currentState.func += 1;
+            var id = this.currentState.func,
+                ignoring = !!this.currentState.ignoring,
+                name = node.id ? node.id.name : '(anonymous_' + id + ')',
+                clone = function (attr) {
+                    var obj = location[attr] || /* istanbul ignore next */ {};
+                    return { line: obj.line, column: obj.column };
+                };
+            this.coverState.fnMap[id] = {
+                name: name, line: line,
+                loc: {
+                    start: clone('start'),
+                    end: clone('end')
+                },
+                skip: ignoring || undefined
+            };
+            this.coverState.f[id] = 0;
+            return id;
+        },
+
+        coverFunction: function (node, walker) {
+            var id,
+                body = node.body,
+                blockBody = body.body,
+                popped;
+
+            this.maybeSkipNode(node, 'next');
+
+            id = this.functionName(node, walker.startLineForNode(node), {
+                start: node.loc.start,
+                end: { line: node.body.loc.start.line, column: node.body.loc.start.column }
+            });
+
+            if (blockBody.length > 0 && this.isUseStrictExpression(blockBody[0])) {
+                popped = blockBody.shift();
+            }
+            blockBody.unshift(
+                astgen.statement(
+                    astgen.postIncrement(
+                        astgen.subscript(
+                            astgen.dot(astgen.variable(this.currentState.trackerVar), astgen.variable('f')),
+                            astgen.stringLiteral(id)
+                        )
+                    )
+                )
+            );
+            if (popped) {
+                blockBody.unshift(popped);
+            }
+        },
+
+        branchName: function (type, startLine, pathLocations) {
+            var bName,
+                paths = [],
+                locations = [],
+                i,
+                ignoring = !!this.currentState.ignoring;
+            this.currentState.branch += 1;
+            bName = this.currentState.branch;
+            for (i = 0; i < pathLocations.length; i += 1) {
+                pathLocations[i].skip = pathLocations[i].skip || ignoring || undefined;
+                locations.push(pathLocations[i]);
+                paths.push(0);
+            }
+            this.coverState.b[bName] = paths;
+            this.coverState.branchMap[bName] = { line: startLine, type: type, locations: locations };
+            return bName;
+        },
+
+        branchIncrementExprAst: function (varName, branchIndex, down) {
+            var ret = astgen.postIncrement(
+                astgen.subscript(
+                    astgen.subscript(
+                        astgen.dot(astgen.variable(this.currentState.trackerVar), astgen.variable('b')),
+                        astgen.stringLiteral(varName)
+                    ),
+                    astgen.numericLiteral(branchIndex)
+                ),
+                down
+            );
+            return ret;
+        },
+
+        locationsForNodes: function (nodes) {
+            var ret = [],
+                i;
+            for (i = 0; i < nodes.length; i += 1) {
+                ret.push(nodes[i].loc);
+            }
+            return ret;
+        },
+
+        ifBranchInjector: function (node, walker) {
+            var alreadyIgnoring = !!this.currentState.ignoring,
+                hint = this.currentState.currentHint,
+                ignoreThen = !alreadyIgnoring && hint && hint.type === 'if',
+                ignoreElse = !alreadyIgnoring && hint && hint.type === 'else',
+                line = node.loc.start.line,
+                col = node.loc.start.column,
+                makeLoc = function () { return  { line: line, column: col }; },
+                bName = this.branchName('if', walker.startLineForNode(node), [
+                    { start: makeLoc(), end: makeLoc(), skip: ignoreThen || undefined },
+                    { start: makeLoc(), end: makeLoc(), skip: ignoreElse || undefined }
+                ]),
+                thenBody = node.consequent.body,
+                elseBody = node.alternate.body,
+                child;
+            thenBody.unshift(astgen.statement(this.branchIncrementExprAst(bName, 0)));
+            elseBody.unshift(astgen.statement(this.branchIncrementExprAst(bName, 1)));
+            if (ignoreThen) { child = node.consequent; child.preprocessor = this.startIgnore; child.postprocessor = this.endIgnore; }
+            if (ignoreElse) { child = node.alternate; child.preprocessor = this.startIgnore; child.postprocessor = this.endIgnore; }
+        },
+
+        branchLocationFor: function (name, index) {
+            return this.coverState.branchMap[name].locations[index];
+        },
+
+        switchBranchInjector: function (node, walker) {
+            var cases = node.cases,
+                bName,
+                i;
+
+            if (!(cases && cases.length > 0)) {
+                return;
+            }
+            bName = this.branchName('switch', walker.startLineForNode(node), this.locationsForNodes(cases));
+            for (i = 0; i < cases.length; i += 1) {
+                cases[i].branchLocation = this.branchLocationFor(bName, i);
+                cases[i].consequent.unshift(astgen.statement(this.branchIncrementExprAst(bName, i)));
+            }
+        },
+
+        switchCaseInjector: function (node) {
+            var location = node.branchLocation;
+            delete node.branchLocation;
+            if (this.maybeSkipNode(node, 'next')) {
+                location.skip = true;
+            }
+        },
+
+        conditionalBranchInjector: function (node, walker) {
+            var bName = this.branchName('cond-expr', walker.startLineForNode(node), this.locationsForNodes([ node.consequent, node.alternate ])),
+                ast1 = this.branchIncrementExprAst(bName, 0),
+                ast2 = this.branchIncrementExprAst(bName, 1);
+
+            node.consequent.preprocessor = this.maybeAddSkip(this.branchLocationFor(bName, 0));
+            node.alternate.preprocessor = this.maybeAddSkip(this.branchLocationFor(bName, 1));
+            node.consequent = astgen.sequence(ast1, node.consequent);
+            node.alternate = astgen.sequence(ast2, node.alternate);
+        },
+
+        maybeAddSkip: function (branchLocation) {
+            return function (node) {
+                var alreadyIgnoring = !!this.currentState.ignoring,
+                    hint = this.currentState.currentHint,
+                    ignoreThis = !alreadyIgnoring && hint && hint.type === 'next';
+                if (ignoreThis) {
+                    this.startIgnore();
+                    node.postprocessor = this.endIgnore;
+                }
+                if (ignoreThis || alreadyIgnoring) {
+                    branchLocation.skip = true;
+                }
+            };
+        },
+
+        logicalExpressionBranchInjector: function (node, walker) {
+            var parent = walker.parent(),
+                leaves = [],
+                bName,
+                tuple,
+                i;
+
+            this.maybeSkipNode(node, 'next');
+
+            if (parent && parent.node.type === SYNTAX.LogicalExpression.name) {
+                //already covered
+                return;
+            }
+
+            this.findLeaves(node, leaves);
+            bName = this.branchName('binary-expr',
+                walker.startLineForNode(node),
+                this.locationsForNodes(leaves.map(function (item) { return item.node; }))
+            );
+            for (i = 0; i < leaves.length; i += 1) {
+                tuple = leaves[i];
+                tuple.parent[tuple.property] = astgen.sequence(this.branchIncrementExprAst(bName, i), tuple.node);
+                tuple.node.preprocessor = this.maybeAddSkip(this.branchLocationFor(bName, i));
+            }
+        },
+
+        findLeaves: function (node, accumulator, parent, property) {
+            if (node.type === SYNTAX.LogicalExpression.name) {
+                this.findLeaves(node.left, accumulator, node, 'left');
+                this.findLeaves(node.right, accumulator, node, 'right');
+            } else {
+                accumulator.push({ node: node, parent: parent, property: property });
+            }
+        },
+        maybeAddType: function (node /*, walker */) {
+            var props = node.properties,
+                i,
+                child;
+            for (i = 0; i < props.length; i += 1) {
+                child = props[i];
+                if (!child.type) {
+                    child.type = SYNTAX.Property.name;
+                }
+            }
+        },
+    };
+
+    if (isNode) {
+        module.exports = Instrumenter;
+    } else {
+        window.Instrumenter = Instrumenter;
+    }
+
+}(typeof module !== 'undefined' && typeof module.exports !== 'undefined' && typeof exports !== 'undefined'));
diff --git a/tooling/talertest/selenium/runtime.js b/tooling/talertest/selenium/runtime.js
new file mode 100644
index 000000000..e00671175
--- /dev/null
+++ b/tooling/talertest/selenium/runtime.js
@@ -0,0 +1,206 @@
+/*
+ This file is part of TALER
+ (C) 2016 Inria
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ *
+ * @author Florian Dold
+ */
+
+"use strict";
+
+var webdriver = require('selenium-webdriver');
+var chrome = require('selenium-webdriver/chrome');
+var path = require("path");
+var process = require("process");
+var fs = require("fs");
+var globSync = require("glob").sync;
+
+var connect = require('connect');
+var serveStatic = require('serve-static');
+
+// Port of the web server used to serve the test files
+var httpPort = 8080;
+
+var p = `http://localhost:${httpPort}/testlib/selenium/testhost.html`;
+
+var argv = require('minimist')(process.argv.slice(2), {"boolean": ["keep-open", "coverage"]});
+
+function printUsage() {
+  console.log(`Usage: [--keep-open] TESTSCRIPT`);
+}
+
+function randId(n) {
+  let s = "";
+  var choices = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+  for (let i = 0; i < n; i++) {
+    s += choices.charAt(Math.floor(Math.random() * choices.length));
+  }
+
+  return s;
+}
+
+if (argv._.length != 1) {
+  console.log("exactly one test script must be given");
+  printUsage();
+  process.exit(1);
+}
+
+var testScriptName = path.resolve(argv._[0]);
+var testName = path.basename(testScriptName, ".js");
+var projectRoot = path.resolve(__dirname, "../../") + "/";
+if (!testScriptName.startsWith(projectRoot)) {
+  console.log("test file must be inside wallet project root");
+  process.exit(1);
+}
+
+var testScript = testScriptName.substring(projectRoot.length);
+
+try {
+  var stats = fs.lstatSync(path.resolve(projectRoot, "./" + testScript));
+  if (!stats.isFile()) {
+    throw Error("test must be a file");
+  }
+} catch (e) {
+  console.log("can't execute test");
+  console.log(e);
+  process.exit(e);
+}
+
+
+var script = `
+  function onStatus(s) {
+    document.body.appendChild(document.createTextNode(s));
+    document.body.appendChild(document.createElement("br"));
+  }
+  function f() {
+    if ("undefined" == typeof System) {
+      console.log("can't access module loader");
+      return
+    }
+    System.import("testlib/talertest")
+      .then(tt => {
+        SystemJS.import("http://localhost:${httpPort}/${testScript}")
+          .then(() => {
+            return tt.run(onStatus);
+          })
+          .then(() => {
+            window.__test_over = true;
+          })
+          .catch((e) => {
+            window.__test_over = true;
+          });
+      })
+      .catch((e) => {
+        console.error("can't locate talertest");
+        console.error(e);
+      });
+  }
+  if (document.readyState == "complete") {
+    f();
+  } else {
+    document.addEventListener("DOMContentLoaded", f);
+  }
+`;
+
+function untilTestOver() {
+  return driver.executeScript("return window.__test_over");
+}
+
+console.log("TAP version 13");
+
+let srv = connect().use(serveStatic(__dirname + "/../../"));
+let l = srv.listen(8080);
+
+var driver = new webdriver.Builder()
+  .setLoggingPrefs({browser: 'ALL'})
+  .forBrowser('chrome')
+  .build();
+
+driver.get(p);
+if (argv["coverage"]) {
+  driver.executeScript("window.requestCoverage = true;");
+}
+driver.executeScript(script);
+driver.wait(untilTestOver);
+
+
+/**
+ * Instrument and get a coverage stub for all
+ * files we don't have coverage for, so they show
+ * up in the report.
+ */
+function augmentCoverage(cov) {
+  for (let file of globSync(projectRoot + "/src/**/*.js")) {
+    let suffix = file.substring(0, projectRoot.lenth);
+    if (/.*\/vendor\/.*/.test(suffix)) {
+      continue;
+    }
+    if (/.*\/taler-emscripten-lib.js/.test(suffix)) {
+      continue;
+    }
+    if (file in cov) {
+      continue;
+    }
+    let instrumenter = new (require("istanbul").Instrumenter)();
+    let source = fs.readFileSync(file, "utf-8");
+    let instrumentedSrc = instrumenter.instrumentSync(source, file);
+    let covStubRE = /\{.*"path".*"fnMap".*"statementMap".*"branchMap".*\}/g;
+    let covStubMatch = covStubRE.exec(instrumentedSrc);
+
+    if (covStubMatch !== null) {
+      let covStub = JSON.parse(covStubMatch[0]);
+      cov[file] = covStub;
+    }
+  }
+}
+
+
+driver.manage().logs().get("browser").then((logs) => {
+  for (let l of logs) {
+    if (l.message.startsWith("{")) {
+      // format not understood, sometimes messages are logged
+      // with more structure, just pass it on
+      console.log(l.message);
+      continue;
+    }
+    let s1 = l.message.indexOf(" ") + 1;
+    let s2 = l.message.indexOf(" ", s1) + 1;
+    // Skip file url and LINE:COL
+    console.log(l.message.substring(s2));
+  }
+
+  let coverage = driver.executeScript("return JSON.stringify(window.__coverage__);");
+  coverage.then((covStr) => {
+    let cov = JSON.parse(covStr);
+    if (cov) {
+      let covTranslated = {};
+      for (let f in cov) {
+        let p = path.resolve(projectRoot, f);
+        let c = covTranslated[p] = cov[f];
+        c.path = p;
+      }
+      augmentCoverage(covTranslated);
+      fs.writeFileSync(`coverage-${testName}-${randId(5)}.json`, JSON.stringify(covTranslated));
+    }
+    if (!argv["keep-open"]) {
+      driver.quit();
+      l.close();
+    }
+  })
+
+});
+
diff --git a/tooling/talertest/selenium/system.js b/tooling/talertest/selenium/system.js
new file mode 100644
index 000000000..1b7c1f82f
--- /dev/null
+++ b/tooling/talertest/selenium/system.js
@@ -0,0 +1,6 @@
+/*
+ * SystemJS v0.19.41
+ */
+!function(){function e(){!function(e){function t(e,r){if("string"!=typeof e)throw new TypeError("URL must be a string");var n=String(e).replace(/^\s+|\s+$/g,"").match(/^([^:\/?#]+:)?(?:\/\/(?:([^:@\/?#]*)(?::([^:@\/?#]*))?@)?(([^:\/?#]*)(?::(\d*))?))?([^?#]*)(\?[^#]*)?(#[\s\S]*)?/);if(!n)throw new RangeError("Invalid URL format");var a=n[1]||"",o=n[2]||"",i=n[3]||"",s=n[4]||"",l=n[5]||"",u=n[6]||"",d=n[7]||"",c=n[8]||"",f=n[9]||"";if(void 0!==r){var m=r instanceof t?r:new t(r),p=!a&&!s&&!o;!p||d||c||(c=m.search),p&&"/"!==d[0]&&(d=d?(!m.host&&!m.username||m.pathname?"":"/")+m.pathname.slice(0,m.pathname.lastIndexOf("/")+1)+d:m.pathname);var h=[];d.replace(/^(\.\.?(\/|$))+/,"").replace(/\/(\.(\/|$))+/g,"/").replace(/\/\.\.$/,"/../").replace(/\/?[^\/]*/g,function(e){"/.."===e?h.pop():h.push(e)}),d=h.join("").replace(/^\//,"/"===d[0]?"/":""),p&&(u=m.port,l=m.hostname,s=m.host,i=m.password,o=m.username),a||(a=m.protocol)}d=d.replace(/\\/g,"/"),this.origin=s?a+(""!==a||""!==s?"//":"")+s:"",this.href=a+(a&&s||"file:"==a?"//":"")+(""!==o?o+(""!==i?":"+i:"")+"@":"")+s+d+c+f,this.protocol=a,this.username=o,this.password=i,this.host=s,this.hostname=l,this.port=u,this.pathname=d,this.search=c,this.hash=f}e.URLPolyfill=t}("undefined"!=typeof self?self:global),function(e){function t(e,t){if(!e.originalErr)for(var r=((e.message||e)+(e.stack?"\n"+e.stack:"")).toString().split("\n"),n=[],a=0;a<r.length;a++)"undefined"!=typeof $__curScript&&r[a].indexOf($__curScript.src)!=-1||n.push(r[a]);var o="(SystemJS) "+(n?n.join("\n\t"):e.message.substr(11))+"\n\t"+t;F||(o=o.replace(D?/file:\/\/\//g:/file:\/\//g,""));var i=J?new 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r=document.getElementsByTagName("script");if($__curScript=r[r.length-1],document.currentScript&&($__curScript.defer||$__curScript.async)&&($__curScript=document.currentScript),$__curScript.src||($__curScript=void 0),t){var n=$__curScript.src,a=n.substr(0,n.lastIndexOf("/")+1);window.systemJSBootstrap=e,document.write('<script type="text/javascript" src="'+a+'system-polyfills.js"></script>')}else e()}else if("undefined"!=typeof importScripts){var a="";try{throw new Error("_")}catch(e){e.stack.replace(/(?:at|@).*(http.+):[\d]+:[\d]+/,function(e,t){$__curScript={src:t},a=t.replace(/\/[^\/]*$/,"/")})}t&&importScripts(a+"system-polyfills.js"),e()}else $__curScript="undefined"!=typeof __filename?{src:__filename}:null,e()}();
+//# sourceMappingURL=system.js.map
diff --git a/tooling/talertest/selenium/testhost.html b/tooling/talertest/selenium/testhost.html
new file mode 100644
index 000000000..01641547d
--- /dev/null
+++ b/tooling/talertest/selenium/testhost.html
@@ -0,0 +1,63 @@
+<!doctype html>
+<html>
+  <head>
+    <title>Browser Test Host</title>
+
+    <script src="/testlib/selenium/esprima.js"></script>
+    <script src="/testlib/selenium/escodegen.browser.js"></script>
+    <script src="/testlib/selenium/instrumenter.js"></script>
+
+    <script src="/src/vendor/URI.js"></script>
+
+    <!-- for instrumentation to work, we have to use the non-csp version -->
+    <script src="/testlib/selenium/system.js"></script>
+
+  </head>
+  <body>
+    <script>
+    document.body.appendChild(document.createTextNode(`starting test`));
+    document.body.appendChild(document.createElement("br"));
+
+    var requestCoverage = false;
+
+    let parser = document.createElement('a');
+
+    let oldTranslate = System.translate.bind(System);
+    System.translate = (load) => {
+      let srcP = oldTranslate(load);
+      if (!requestCoverage) {
+        return srcP;
+      }
+
+      parser.href = load.name;
+      let modName = parser.pathname.substring(1);
+
+      if (/.*\/?taler-emscripten-lib.js/.test(load.name)) {
+        // don't instrument emscripten
+        document.body.appendChild(document.createTextNode(`not instrumenting ${modName}`));
+        document.body.appendChild(document.createElement("br"));
+        return srcP;
+      }
+
+      let inst = new Instrumenter();
+      document.body.appendChild(document.createTextNode(`instrumenting ${modName}`));
+      document.body.appendChild(document.createElement("br"));
+
+      return Promise.resolve(srcP).then((src) => {
+        return inst.instrumentSync(src, modName);
+      });
+    }
+
+    System.config({
+        baseURL: "/",
+        defaultJSExtensions: true,
+        meta: {
+          "src/emscripten/taler-emscripten-lib": {
+            format: "global",
+            exports: "Module",
+          },
+        },
+    });
+    </script>
+  </body>
+</html>
diff --git a/tooling/talertest/talertest.d.ts b/tooling/talertest/talertest.d.ts
new file mode 100644
index 000000000..599b8b601
--- /dev/null
+++ b/tooling/talertest/talertest.d.ts
@@ -0,0 +1,19 @@
+/**
+ *
+ * @author Florian Dold
+ */
+export declare type TestFn = (t: TestLib) => void | Promise<void>;
+export interface TestLib {
+    pass(msg?: string): void;
+    fail(msg?: string): void;
+    assert(v: any, msg?: string): void;
+    assertEqualsStrict(v1: any, v2: any, msg?: string): void;
+}
+/**
+ * Register a test case.
+ */
+export declare function test(name: string, testFn: TestFn): void;
+/**
+ * Run all registered test case, producing a TAP stream.
+ */
+export declare function run(statusCallback?: (m: string) => void): Promise<void>;
diff --git a/tooling/talertest/talertest.js b/tooling/talertest/talertest.js
new file mode 100644
index 000000000..9f7d63a0a
--- /dev/null
+++ b/tooling/talertest/talertest.js
@@ -0,0 +1,111 @@
+/*
+ This file is part of TALER
+ (C) 2016 Inria
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+let tests = [];
+let testRunner;
+/**
+ * Register a test case.
+ */
+function test(name, testFn) {
+    tests.push({ name, testFn });
+}
+exports.test = test;
+/**
+ * Run all registered test case, producing a TAP stream.
+ */
+function run(statusCallback) {
+    return __awaiter(this, void 0, void 0, function* () {
+        console.log(`1..${tests.length}`);
+        for (let i in tests) {
+            let t = tests[i];
+            let passed = false;
+            let lastMsg = undefined;
+            let p = new Promise((resolve, reject) => {
+                let pass = (msg) => {
+                    if (passed) {
+                        let e = Error("test passed twice");
+                        reject(e);
+                        throw e;
+                    }
+                    passed = true;
+                    lastMsg = msg;
+                    resolve();
+                };
+                let fail = (msg) => {
+                    lastMsg = msg;
+                    let e = Error("test failed");
+                    reject(e);
+                    throw e;
+                };
+                let assert = (v, msg) => {
+                    if (!v) {
+                        lastMsg = msg;
+                        reject(Error("test failed"));
+                        return;
+                    }
+                };
+                let assertEqualsStrict = (v1, v2, msg) => {
+                    if (v1 !== v2) {
+                        console.log(`# expected: ${v1}`);
+                        console.log(`# actual: ${v2}`);
+                        lastMsg = msg;
+                        let e = Error("test failed");
+                        reject(e);
+                        throw e;
+                    }
+                };
+                // Test might return a promise.  If so, wait for it.
+                let r = t.testFn({ pass, fail, assert, assertEqualsStrict });
+                if (r) {
+                    r.then(() => pass(), (e) => fail(e.toString()));
+                }
+            });
+            console.log(`# ${t.name}`);
+            statusCallback && statusCallback(`starting test ${t.name}`);
+            if (!lastMsg) {
+                lastMsg = "-";
+            }
+            try {
+                yield p;
+                if (!passed) {
+                    throw Error("test did not call 'pass'");
+                }
+                console.log(`ok ${Number(i) + 1} ${lastMsg || "-"}`);
+                statusCallback && statusCallback(`finished test ${t.name}`);
+            }
+            catch (e) {
+                try {
+                    console.error(e.stack);
+                }
+                catch (e2) {
+                    console.error(e);
+                }
+                console.log(`not ok ${Number(i) + 1} ${lastMsg || "-"}`);
+                statusCallback && statusCallback(`failed test ${t.name}`);
+            }
+        }
+    });
+}
+exports.run = run;
diff --git a/tooling/talertest/talertest.ts b/tooling/talertest/talertest.ts
new file mode 100644
index 000000000..5e561981c
--- /dev/null
+++ b/tooling/talertest/talertest.ts
@@ -0,0 +1,122 @@
+/*
+ This file is part of TALER
+ (C) 2016 Inria
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ *
+ * @author Florian Dold
+ */
+
+export type TestFn = (t: TestLib) => void | Promise<void>;
+
+interface Test {
+  name: string;
+  testFn: TestFn;
+}
+
+export interface TestLib {
+  pass(msg?: string): void;
+  fail(msg?: string): void;
+  assert(v: any, msg?: string): void;
+  assertEqualsStrict(v1: any, v2: any, msg?: string): void;
+}
+
+let tests: Test[] = [];
+let testRunner: any;
+
+
+/**
+ * Register a test case.
+ */
+export function test(name: string, testFn: TestFn) {
+  tests.push({name, testFn});
+}
+
+
+/**
+ * Run all registered test case, producing a TAP stream.
+ */
+export async function run(statusCallback?: (m: string) => void) {
+  console.log(`1..${tests.length}`);
+  for (let i in tests) {
+    let t = tests[i];
+    let passed = false;
+    let lastMsg: string|undefined = undefined;
+    let p = new Promise((resolve, reject) => {
+      let pass = (msg?: string) => {
+        if (passed) {
+          let e = Error("test passed twice");
+          reject(e);
+          throw e;
+        }
+        passed = true;
+        lastMsg = msg;
+        resolve();
+      };
+      let fail = (msg?: string) => {
+        lastMsg = msg;
+          let e = Error("test failed");
+          reject(e);
+          throw e;
+      };
+      let assert = (v: any, msg?: string) => {
+        if (!v) {
+          lastMsg = msg;
+          reject(Error("test failed"));
+          return;
+        }
+      };
+      let assertEqualsStrict = (v1: any, v2: any, msg?: string) => {
+        if (v1 !== v2) {
+          console.log(`# expected: ${v1}`);
+          console.log(`# actual: ${v2}`);
+          lastMsg = msg;
+          let e = Error("test failed");
+          reject(e);
+          throw e;
+        }
+      };
+      // Test might return a promise.  If so, wait for it.
+      let r = t.testFn({pass,fail, assert, assertEqualsStrict});
+      if (r) {
+        r.then(() => pass(), (e) => fail(e.toString()));
+      }
+    });
+
+    console.log(`# ${t.name}`);
+    statusCallback && statusCallback(`starting test ${t.name}`);
+
+    if (!lastMsg) {
+      lastMsg = "-";
+    }
+
+    try {
+      await p;
+      if (!passed) {
+        throw Error("test did not call 'pass'");
+      }
+      console.log(`ok ${Number(i) + 1} ${lastMsg || "-"}`);
+      statusCallback && statusCallback(`finished test ${t.name}`);
+    } catch (e) {
+      try {
+        console.error(e.stack);
+      } catch (e2) {
+        console.error(e);
+      }
+      console.log(`not ok ${Number(i) + 1} ${lastMsg || "-"}`);
+      statusCallback && statusCallback(`failed test ${t.name}`);
+    }
+  }
+}
diff --git a/tooling/talertest/tsconfig.json b/tooling/talertest/tsconfig.json
new file mode 100644
index 000000000..1f6687013
--- /dev/null
+++ b/tooling/talertest/tsconfig.json
@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "target": "es6",
+    "module": "commonjs",
+    "lib": [
+      "ES6",
+      "DOM"
+    ],
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "strictNullChecks": true,
+    "noImplicitAny": true,
+    "declaration": true,
+    "alwaysStrict": true
+  },
+  "files": [
+    "talertest.ts"
+  ]
+}
diff --git a/tooling/talertest/yarn.lock b/tooling/talertest/yarn.lock
new file mode 100644
index 000000000..0be90c940
--- /dev/null
+++ b/tooling/talertest/yarn.lock
@@ -0,0 +1,7 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+typescript@^2.2.2:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.2.2.tgz#606022508479b55ffa368b58fee963a03dfd7b0c"