add linting (and some initial fixes)

4 files changed, 165 insertions, 0 deletions

diff --git a/node_modules/onetime/index.js b/node_modules/onetime/index.js
new file mode 100644
index 000000000..0d76476b0
--- /dev/null
+++ b/node_modules/onetime/index.js
@@ -0,0 +1,39 @@
+'use strict';
+const mimicFn = require('mimic-fn');
+
+module.exports = (fn, opts) => {
+	// TODO: Remove this in v3
+	if (opts === true) {
+		throw new TypeError('The second argument is now an options object');
+	}
+
+	if (typeof fn !== 'function') {
+		throw new TypeError('Expected a function');
+	}
+
+	opts = opts || {};
+
+	let ret;
+	let called = false;
+	const fnName = fn.displayName || fn.name || '<anonymous>';
+
+	const onetime = function () {
+		if (called) {
+			if (opts.throw === true) {
+				throw new Error(`Function \`${fnName}\` can only be called once`);
+			}
+
+			return ret;
+		}
+
+		called = true;
+		ret = fn.apply(this, arguments);
+		fn = null;
+
+		return ret;
+	};
+
+	mimicFn(onetime, fn);
+
+	return onetime;
+};
diff --git a/node_modules/onetime/license b/node_modules/onetime/license
new file mode 100644
index 000000000..654d0bfe9
--- /dev/null
+++ b/node_modules/onetime/license
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/node_modules/onetime/package.json b/node_modules/onetime/package.json
new file mode 100644
index 000000000..73223ff96
--- /dev/null
+++ b/node_modules/onetime/package.json
@@ -0,0 +1,40 @@
+{
+  "name": "onetime",
+  "version": "2.0.1",
+  "description": "Ensure a function is only called once",
+  "license": "MIT",
+  "repository": "sindresorhus/onetime",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=4"
+  },
+  "scripts": {
+    "test": "xo && ava"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "once",
+    "function",
+    "one",
+    "onetime",
+    "func",
+    "fn",
+    "single",
+    "call",
+    "called",
+    "prevent"
+  ],
+  "dependencies": {
+    "mimic-fn": "^1.0.0"
+  },
+  "devDependencies": {
+    "ava": "*",
+    "xo": "*"
+  }
+}
diff --git a/node_modules/onetime/readme.md b/node_modules/onetime/readme.md
new file mode 100644
index 000000000..95eb3b7c9
--- /dev/null
+++ b/node_modules/onetime/readme.md
@@ -0,0 +1,65 @@
+# onetime [![Build Status](https://travis-ci.org/sindresorhus/onetime.svg?branch=master)](https://travis-ci.org/sindresorhus/onetime)
+
+> Ensure a function is only called once
+
+When called multiple times it will return the return value from the first call.
+
+*Unlike the module [once](https://github.com/isaacs/once), this one isn't naughty extending `Function.prototype`.*
+
+
+## Install
+
+```
+$ npm install --save onetime
+```
+
+
+## Usage
+
+```js
+let i = 0;
+
+const foo = onetime(() => i++);
+
+foo(); //=> 0
+foo(); //=> 0
+foo(); //=> 0
+```
+
+```js
+const foo = onetime(() => {}, {throw: true});
+
+foo();
+
+foo();
+//=> Error: Function `foo` can only be called once
+```
+
+
+## API
+
+### onetime(fn, [options])
+
+Returns a function that only calls `fn` once.
+
+#### fn
+
+Type: `Function`
+
+Function that should only be called once.
+
+#### options
+
+Type: `Object`
+
+##### throw
+
+Type: `boolean`<br>
+Default: `false`
+
+Throw an error when called more than once.
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)