Index: imaps-frontend/node_modules/he/README.md
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+# he [![Build status](https://travis-ci.org/mathiasbynens/he.svg?branch=master)](https://travis-ci.org/mathiasbynens/he) [![Code coverage status](https://codecov.io/github/mathiasbynens/he/coverage.svg?branch=master)](https://codecov.io/github/mathiasbynens/he?branch=master) [![Dependency status](https://gemnasium.com/mathiasbynens/he.svg)](https://gemnasium.com/mathiasbynens/he)
+
+_he_ (for “HTML entities”) is a robust HTML entity encoder/decoder written in JavaScript. It supports [all standardized named character references as per HTML](https://html.spec.whatwg.org/multipage/syntax.html#named-character-references), handles [ambiguous ampersands](https://mathiasbynens.be/notes/ambiguous-ampersands) and other edge cases [just like a browser would](https://html.spec.whatwg.org/multipage/syntax.html#tokenizing-character-references), has an extensive test suite, and — contrary to many other JavaScript solutions — _he_ handles astral Unicode symbols just fine. [An online demo is available.](https://mothereff.in/html-entities)
+
+## Installation
+
+Via [npm](https://www.npmjs.com/):
+
+```bash
+npm install he
+```
+
+Via [Bower](http://bower.io/):
+
+```bash
+bower install he
+```
+
+Via [Component](https://github.com/component/component):
+
+```bash
+component install mathiasbynens/he
+```
+
+In a browser:
+
+```html
+<script src="he.js"></script>
+```
+
+In [Node.js](https://nodejs.org/), [io.js](https://iojs.org/), [Narwhal](http://narwhaljs.org/), and [RingoJS](http://ringojs.org/):
+
+```js
+var he = require('he');
+```
+
+In [Rhino](http://www.mozilla.org/rhino/):
+
+```js
+load('he.js');
+```
+
+Using an AMD loader like [RequireJS](http://requirejs.org/):
+
+```js
+require(
+  {
+    'paths': {
+      'he': 'path/to/he'
+    }
+  },
+  ['he'],
+  function(he) {
+    console.log(he);
+  }
+);
+```
+
+## API
+
+### `he.version`
+
+A string representing the semantic version number.
+
+### `he.encode(text, options)`
+
+This function takes a string of text and encodes (by default) any symbols that aren’t printable ASCII symbols and `&`, `<`, `>`, `"`, `'`, and `` ` ``, replacing them with character references.
+
+```js
+he.encode('foo © bar ≠ baz 𝌆 qux');
+// → 'foo &#xA9; bar &#x2260; baz &#x1D306; qux'
+```
+
+As long as the input string contains [allowed code points](https://html.spec.whatwg.org/multipage/parsing.html#preprocessing-the-input-stream) only, the return value of this function is always valid HTML. Any [(invalid) code points that cannot be represented using a character reference](https://html.spec.whatwg.org/multipage/syntax.html#table-charref-overrides) in the input are not encoded:
+
+```js
+he.encode('foo \0 bar');
+// → 'foo \0 bar'
+```
+
+However, enabling [the `strict` option](https://github.com/mathiasbynens/he#strict) causes invalid code points to throw an exception. With `strict` enabled, `he.encode` either throws (if the input contains invalid code points) or returns a string of valid HTML.
+
+The `options` object is optional. It recognizes the following properties:
+
+#### `useNamedReferences`
+
+The default value for the `useNamedReferences` option is `false`. This means that `encode()` will not use any named character references (e.g. `&copy;`) in the output — hexadecimal escapes (e.g. `&#xA9;`) will be used instead. Set it to `true` to enable the use of named references.
+
+**Note that if compatibility with older browsers is a concern, this option should remain disabled.**
+
+```js
+// Using the global default setting (defaults to `false`):
+he.encode('foo © bar ≠ baz 𝌆 qux');
+// → 'foo &#xA9; bar &#x2260; baz &#x1D306; qux'
+
+// Passing an `options` object to `encode`, to explicitly disallow named references:
+he.encode('foo © bar ≠ baz 𝌆 qux', {
+  'useNamedReferences': false
+});
+// → 'foo &#xA9; bar &#x2260; baz &#x1D306; qux'
+
+// Passing an `options` object to `encode`, to explicitly allow named references:
+he.encode('foo © bar ≠ baz 𝌆 qux', {
+  'useNamedReferences': true
+});
+// → 'foo &copy; bar &ne; baz &#x1D306; qux'
+```
+
+#### `decimal`
+
+The default value for the `decimal` option is `false`. If the option is enabled, `encode` will generally use decimal escapes (e.g. `&#169;`) rather than hexadecimal escapes (e.g. `&#xA9;`). Beside of this replacement, the basic behavior remains the same when combined with other options. For example: if both options `useNamedReferences` and `decimal` are enabled, named references (e.g. `&copy;`) are used over decimal escapes. HTML entities without a named reference are encoded using decimal escapes.
+
+```js
+// Using the global default setting (defaults to `false`):
+he.encode('foo © bar ≠ baz 𝌆 qux');
+// → 'foo &#xA9; bar &#x2260; baz &#x1D306; qux'
+
+// Passing an `options` object to `encode`, to explicitly disable decimal escapes:
+he.encode('foo © bar ≠ baz 𝌆 qux', {
+  'decimal': false
+});
+// → 'foo &#xA9; bar &#x2260; baz &#x1D306; qux'
+
+// Passing an `options` object to `encode`, to explicitly enable decimal escapes:
+he.encode('foo © bar ≠ baz 𝌆 qux', {
+  'decimal': true
+});
+// → 'foo &#169; bar &#8800; baz &#119558; qux'
+
+// Passing an `options` object to `encode`, to explicitly allow named references and decimal escapes:
+he.encode('foo © bar ≠ baz 𝌆 qux', {
+  'useNamedReferences': true,
+  'decimal': true
+});
+// → 'foo &copy; bar &ne; baz &#119558; qux'
+```
+
+#### `encodeEverything`
+
+The default value for the `encodeEverything` option is `false`. This means that `encode()` will not use any character references for printable ASCII symbols that don’t need escaping. Set it to `true` to encode every symbol in the input string. When set to `true`, this option takes precedence over `allowUnsafeSymbols` (i.e. setting the latter to `true` in such a case has no effect).
+
+```js
+// Using the global default setting (defaults to `false`):
+he.encode('foo © bar ≠ baz 𝌆 qux');
+// → 'foo &#xA9; bar &#x2260; baz &#x1D306; qux'
+
+// Passing an `options` object to `encode`, to explicitly encode all symbols:
+he.encode('foo © bar ≠ baz 𝌆 qux', {
+  'encodeEverything': true
+});
+// → '&#x66;&#x6F;&#x6F;&#x20;&#xA9;&#x20;&#x62;&#x61;&#x72;&#x20;&#x2260;&#x20;&#x62;&#x61;&#x7A;&#x20;&#x1D306;&#x20;&#x71;&#x75;&#x78;'
+
+// This setting can be combined with the `useNamedReferences` option:
+he.encode('foo © bar ≠ baz 𝌆 qux', {
+  'encodeEverything': true,
+  'useNamedReferences': true
+});
+// → '&#x66;&#x6F;&#x6F;&#x20;&copy;&#x20;&#x62;&#x61;&#x72;&#x20;&ne;&#x20;&#x62;&#x61;&#x7A;&#x20;&#x1D306;&#x20;&#x71;&#x75;&#x78;'
+```
+
+#### `strict`
+
+The default value for the `strict` option is `false`. This means that `encode()` will encode any HTML text content you feed it, even if it contains any symbols that cause [parse errors](https://html.spec.whatwg.org/multipage/parsing.html#preprocessing-the-input-stream). To throw an error when such invalid HTML is encountered, set the `strict` option to `true`. This option makes it possible to use _he_ as part of HTML parsers and HTML validators.
+
+```js
+// Using the global default setting (defaults to `false`, i.e. error-tolerant mode):
+he.encode('\x01');
+// → '&#x1;'
+
+// Passing an `options` object to `encode`, to explicitly enable error-tolerant mode:
+he.encode('\x01', {
+  'strict': false
+});
+// → '&#x1;'
+
+// Passing an `options` object to `encode`, to explicitly enable strict mode:
+he.encode('\x01', {
+  'strict': true
+});
+// → Parse error
+```
+
+#### `allowUnsafeSymbols`
+
+The default value for the `allowUnsafeSymbols` option is `false`. This means that characters that are unsafe for use in HTML content (`&`, `<`, `>`, `"`, `'`, and `` ` ``) will be encoded. When set to `true`, only non-ASCII characters will be encoded. If the `encodeEverything` option is set to `true`, this option will be ignored.
+
+```js
+he.encode('foo © and & ampersand', {
+  'allowUnsafeSymbols': true
+});
+// → 'foo &#xA9; and & ampersand'
+```
+
+#### Overriding default `encode` options globally
+
+The global default setting can be overridden by modifying the `he.encode.options` object. This saves you from passing in an `options` object for every call to `encode` if you want to use the non-default setting.
+
+```js
+// Read the global default setting:
+he.encode.options.useNamedReferences;
+// → `false` by default
+
+// Override the global default setting:
+he.encode.options.useNamedReferences = true;
+
+// Using the global default setting, which is now `true`:
+he.encode('foo © bar ≠ baz 𝌆 qux');
+// → 'foo &copy; bar &ne; baz &#x1D306; qux'
+```
+
+### `he.decode(html, options)`
+
+This function takes a string of HTML and decodes any named and numerical character references in it using [the algorithm described in section 12.2.4.69 of the HTML spec](https://html.spec.whatwg.org/multipage/syntax.html#tokenizing-character-references).
+
+```js
+he.decode('foo &copy; bar &ne; baz &#x1D306; qux');
+// → 'foo © bar ≠ baz 𝌆 qux'
+```
+
+The `options` object is optional. It recognizes the following properties:
+
+#### `isAttributeValue`
+
+The default value for the `isAttributeValue` option is `false`. This means that `decode()` will decode the string as if it were used in [a text context in an HTML document](https://html.spec.whatwg.org/multipage/syntax.html#data-state). HTML has different rules for [parsing character references in attribute values](https://html.spec.whatwg.org/multipage/syntax.html#character-reference-in-attribute-value-state) — set this option to `true` to treat the input string as if it were used as an attribute value.
+
+```js
+// Using the global default setting (defaults to `false`, i.e. HTML text context):
+he.decode('foo&ampbar');
+// → 'foo&bar'
+
+// Passing an `options` object to `decode`, to explicitly assume an HTML text context:
+he.decode('foo&ampbar', {
+  'isAttributeValue': false
+});
+// → 'foo&bar'
+
+// Passing an `options` object to `decode`, to explicitly assume an HTML attribute value context:
+he.decode('foo&ampbar', {
+  'isAttributeValue': true
+});
+// → 'foo&ampbar'
+```
+
+#### `strict`
+
+The default value for the `strict` option is `false`. This means that `decode()` will decode any HTML text content you feed it, even if it contains any entities that cause [parse errors](https://html.spec.whatwg.org/multipage/syntax.html#tokenizing-character-references). To throw an error when such invalid HTML is encountered, set the `strict` option to `true`. This option makes it possible to use _he_ as part of HTML parsers and HTML validators.
+
+```js
+// Using the global default setting (defaults to `false`, i.e. error-tolerant mode):
+he.decode('foo&ampbar');
+// → 'foo&bar'
+
+// Passing an `options` object to `decode`, to explicitly enable error-tolerant mode:
+he.decode('foo&ampbar', {
+  'strict': false
+});
+// → 'foo&bar'
+
+// Passing an `options` object to `decode`, to explicitly enable strict mode:
+he.decode('foo&ampbar', {
+  'strict': true
+});
+// → Parse error
+```
+
+#### Overriding default `decode` options globally
+
+The global default settings for the `decode` function can be overridden by modifying the `he.decode.options` object. This saves you from passing in an `options` object for every call to `decode` if you want to use a non-default setting.
+
+```js
+// Read the global default setting:
+he.decode.options.isAttributeValue;
+// → `false` by default
+
+// Override the global default setting:
+he.decode.options.isAttributeValue = true;
+
+// Using the global default setting, which is now `true`:
+he.decode('foo&ampbar');
+// → 'foo&ampbar'
+```
+
+### `he.escape(text)`
+
+This function takes a string of text and escapes it for use in text contexts in XML or HTML documents. Only the following characters are escaped: `&`, `<`, `>`, `"`, `'`, and `` ` ``.
+
+```js
+he.escape('<img src=\'x\' onerror="prompt(1)">');
+// → '&lt;img src=&#x27;x&#x27; onerror=&quot;prompt(1)&quot;&gt;'
+```
+
+### `he.unescape(html, options)`
+
+`he.unescape` is an alias for `he.decode`. It takes a string of HTML and decodes any named and numerical character references in it.
+
+### Using the `he` binary
+
+To use the `he` binary in your shell, simply install _he_ globally using npm:
+
+```bash
+npm install -g he
+```
+
+After that you will be able to encode/decode HTML entities from the command line:
+
+```bash
+$ he --encode 'föo ♥ bår 𝌆 baz'
+f&#xF6;o &#x2665; b&#xE5;r &#x1D306; baz
+
+$ he --encode --use-named-refs 'föo ♥ bår 𝌆 baz'
+f&ouml;o &hearts; b&aring;r &#x1D306; baz
+
+$ he --decode 'f&ouml;o &hearts; b&aring;r &#x1D306; baz'
+föo ♥ bår 𝌆 baz
+```
+
+Read a local text file, encode it for use in an HTML text context, and save the result to a new file:
+
+```bash
+$ he --encode < foo.txt > foo-escaped.html
+```
+
+Or do the same with an online text file:
+
+```bash
+$ curl -sL "http://git.io/HnfEaw" | he --encode > escaped.html
+```
+
+Or, the opposite — read a local file containing a snippet of HTML in a text context, decode it back to plain text, and save the result to a new file:
+
+```bash
+$ he --decode < foo-escaped.html > foo.txt
+```
+
+Or do the same with an online HTML snippet:
+
+```bash
+$ curl -sL "http://git.io/HnfEaw" | he --decode > decoded.txt
+```
+
+See `he --help` for the full list of options.
+
+## Support
+
+_he_ has been tested in at least:
+
+* Chrome 27-50
+* Firefox 3-45
+* Safari 4-9
+* Opera 10-12, 15–37
+* IE 6–11
+* Edge
+* Narwhal 0.3.2
+* Node.js v0.10, v0.12, v4, v5
+* PhantomJS 1.9.0
+* Rhino 1.7RC4
+* RingoJS 0.8-0.11
+
+## Unit tests & code coverage
+
+After cloning this repository, run `npm install` to install the dependencies needed for he development and testing. You may want to install Istanbul _globally_ using `npm install istanbul -g`.
+
+Once that’s done, you can run the unit tests in Node using `npm test` or `node tests/tests.js`. To run the tests in Rhino, Ringo, Narwhal, and web browsers as well, use `grunt test`.
+
+To generate the code coverage report, use `grunt cover`.
+
+## Acknowledgements
+
+Thanks to [Simon Pieters](https://simon.html5.org/) ([@zcorpan](https://twitter.com/zcorpan)) for the many suggestions.
+
+## Author
+
+| [![twitter/mathias](https://gravatar.com/avatar/24e08a9ea84deb17ae121074d0f17125?s=70)](https://twitter.com/mathias "Follow @mathias on Twitter") |
+|---|
+| [Mathias Bynens](https://mathiasbynens.be/) |
+
+## License
+
+_he_ is available under the [MIT](https://mths.be/mit) license.
