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-rw-r--r--third_party/immer/extra/js/lib/platform.js1135
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diff --git a/third_party/immer/extra/js/lib/platform.js b/third_party/immer/extra/js/lib/platform.js
deleted file mode 100644
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--- a/third_party/immer/extra/js/lib/platform.js
+++ /dev/null
@@ -1,1135 +0,0 @@
-/*!
- * Platform.js v1.3.1 <http://mths.be/platform>
- * Copyright 2014-2016 Benjamin Tan <https://d10.github.io/>
- * Copyright 2011-2013 John-David Dalton <http://allyoucanleet.com/>
- * Available under MIT license <http://mths.be/mit>
- */
-;(function() {
-  'use strict';
-
-  /** Used to determine if values are of the language type `Object` */
-  var objectTypes = {
-    'function': true,
-    'object': true
-  };
-
-  /** Used as a reference to the global object */
-  var root = (objectTypes[typeof window] && window) || this;
-
-  /** Backup possible global object */
-  var oldRoot = root;
-
-  /** Detect free variable `exports` */
-  var freeExports = objectTypes[typeof exports] && exports;
-
-  /** Detect free variable `module` */
-  var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;
-
-  /** Detect free variable `global` from Node.js or Browserified code and use it as `root` */
-  var freeGlobal = freeExports && freeModule && typeof global == 'object' && global;
-  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) {
-    root = freeGlobal;
-  }
-
-  /**
-   * Used as the maximum length of an array-like object.
-   * See the [ES6 spec](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
-   * for more details.
-   */
-  var maxSafeInteger = Math.pow(2, 53) - 1;
-
-  /** Opera regexp */
-  var reOpera = /\bOpera/;
-
-  /** Possible global object */
-  var thisBinding = this;
-
-  /** Used for native method references */
-  var objectProto = Object.prototype;
-
-  /** Used to check for own properties of an object */
-  var hasOwnProperty = objectProto.hasOwnProperty;
-
-  /** Used to resolve the internal `[[Class]]` of values */
-  var toString = objectProto.toString;
-
-  /*--------------------------------------------------------------------------*/
-
-  /**
-   * Capitalizes a string value.
-   *
-   * @private
-   * @param {string} string The string to capitalize.
-   * @returns {string} The capitalized string.
-   */
-  function capitalize(string) {
-    string = String(string);
-    return string.charAt(0).toUpperCase() + string.slice(1);
-  }
-
-  /**
-   * A utility function to clean up the OS name.
-   *
-   * @private
-   * @param {string} os The OS name to clean up.
-   * @param {string} [pattern] A `RegExp` pattern matching the OS name.
-   * @param {string} [label] A label for the OS.
-   */
-  function cleanupOS(os, pattern, label) {
-    // platform tokens defined at
-    // http://msdn.microsoft.com/en-us/library/ms537503(VS.85).aspx
-    // http://web.archive.org/web/20081122053950/http://msdn.microsoft.com/en-us/library/ms537503(VS.85).aspx
-    var data = {
-      '6.4':  '10',
-      '6.3':  '8.1',
-      '6.2':  '8',
-      '6.1':  'Server 2008 R2 / 7',
-      '6.0':  'Server 2008 / Vista',
-      '5.2':  'Server 2003 / XP 64-bit',
-      '5.1':  'XP',
-      '5.01': '2000 SP1',
-      '5.0':  '2000',
-      '4.0':  'NT',
-      '4.90': 'ME'
-    };
-    // detect Windows version from platform tokens
-    if (pattern && label && /^Win/i.test(os) &&
-        (data = data[0/*Opera 9.25 fix*/, /[\d.]+$/.exec(os)])) {
-      os = 'Windows ' + data;
-    }
-    // correct character case and cleanup
-    os = String(os);
-
-    if (pattern && label) {
-      os = os.replace(RegExp(pattern, 'i'), label);
-    }
-
-    os = format(
-      os.replace(/ ce$/i, ' CE')
-        .replace(/\bhpw/i, 'web')
-        .replace(/\bMacintosh\b/, 'Mac OS')
-        .replace(/_PowerPC\b/i, ' OS')
-        .replace(/\b(OS X) [^ \d]+/i, '$1')
-        .replace(/\bMac (OS X)\b/, '$1')
-        .replace(/\/(\d)/, ' $1')
-        .replace(/_/g, '.')
-        .replace(/(?: BePC|[ .]*fc[ \d.]+)$/i, '')
-        .replace(/\bx86\.64\b/gi, 'x86_64')
-        .replace(/\b(Windows Phone) OS\b/, '$1')
-        .split(' on ')[0]
-    );
-
-    return os;
-  }
-
-  /**
-   * An iteration utility for arrays and objects.
-   *
-   * @private
-   * @param {Array|Object} object The object to iterate over.
-   * @param {Function} callback The function called per iteration.
-   */
-  function each(object, callback) {
-    var index = -1,
-        length = object ? object.length : 0;
-
-    if (typeof length == 'number' && length > -1 && length <= maxSafeInteger) {
-      while (++index < length) {
-        callback(object[index], index, object);
-      }
-    } else {
-      forOwn(object, callback);
-    }
-  }
-
-  /**
-   * Trim and conditionally capitalize string values.
-   *
-   * @private
-   * @param {string} string The string to format.
-   * @returns {string} The formatted string.
-   */
-  function format(string) {
-    string = trim(string);
-    return /^(?:webOS|i(?:OS|P))/.test(string)
-      ? string
-      : capitalize(string);
-  }
-
-  /**
-   * Iterates over an object's own properties, executing the `callback` for each.
-   *
-   * @private
-   * @param {Object} object The object to iterate over.
-   * @param {Function} callback The function executed per own property.
-   */
-  function forOwn(object, callback) {
-    for (var key in object) {
-      if (hasOwnProperty.call(object, key)) {
-        callback(object[key], key, object);
-      }
-    }
-  }
-
-  /**
-   * Gets the internal `[[Class]]` of a value.
-   *
-   * @private
-   * @param {*} value The value.
-   * @returns {string} The `[[Class]]`.
-   */
-  function getClassOf(value) {
-    return value == null
-      ? capitalize(value)
-      : toString.call(value).slice(8, -1);
-  }
-
-  /**
-   * Host objects can return type values that are different from their actual
-   * data type. The objects we are concerned with usually return non-primitive
-   * types of "object", "function", or "unknown".
-   *
-   * @private
-   * @param {*} object The owner of the property.
-   * @param {string} property The property to check.
-   * @returns {boolean} Returns `true` if the property value is a non-primitive, else `false`.
-   */
-  function isHostType(object, property) {
-    var type = object != null ? typeof object[property] : 'number';
-    return !/^(?:boolean|number|string|undefined)$/.test(type) &&
-      (type == 'object' ? !!object[property] : true);
-  }
-
-  /**
-   * Prepares a string for use in a `RegExp` by making hyphens and spaces optional.
-   *
-   * @private
-   * @param {string} string The string to qualify.
-   * @returns {string} The qualified string.
-   */
-  function qualify(string) {
-    return String(string).replace(/([ -])(?!$)/g, '$1?');
-  }
-
-  /**
-   * A bare-bones `Array#reduce` like utility function.
-   *
-   * @private
-   * @param {Array} array The array to iterate over.
-   * @param {Function} callback The function called per iteration.
-   * @returns {*} The accumulated result.
-   */
-  function reduce(array, callback) {
-    var accumulator = null;
-    each(array, function(value, index) {
-      accumulator = callback(accumulator, value, index, array);
-    });
-    return accumulator;
-  }
-
-  /**
-   * Removes leading and trailing whitespace from a string.
-   *
-   * @private
-   * @param {string} string The string to trim.
-   * @returns {string} The trimmed string.
-   */
-  function trim(string) {
-    return String(string).replace(/^ +| +$/g, '');
-  }
-
-  /*--------------------------------------------------------------------------*/
-
-  /**
-   * Creates a new platform object.
-   *
-   * @memberOf platform
-   * @param {Object|string} [ua=navigator.userAgent] The user agent string or
-   *  context object.
-   * @returns {Object} A platform object.
-   */
-  function parse(ua) {
-
-    /** The environment context object */
-    var context = root;
-
-    /** Used to flag when a custom context is provided */
-    var isCustomContext = ua && typeof ua == 'object' && getClassOf(ua) != 'String';
-
-    // juggle arguments
-    if (isCustomContext) {
-      context = ua;
-      ua = null;
-    }
-
-    /** Browser navigator object */
-    var nav = context.navigator || {};
-
-    /** Browser user agent string */
-    var userAgent = nav.userAgent || '';
-
-    ua || (ua = userAgent);
-
-    /** Used to flag when `thisBinding` is the [ModuleScope] */
-    var isModuleScope = isCustomContext || thisBinding == oldRoot;
-
-    /** Used to detect if browser is like Chrome */
-    var likeChrome = isCustomContext
-      ? !!nav.likeChrome
-      : /\bChrome\b/.test(ua) && !/internal|\n/i.test(toString.toString());
-
-    /** Internal `[[Class]]` value shortcuts */
-    var objectClass = 'Object',
-        airRuntimeClass = isCustomContext ? objectClass : 'ScriptBridgingProxyObject',
-        enviroClass = isCustomContext ? objectClass : 'Environment',
-        javaClass = (isCustomContext && context.java) ? 'JavaPackage' : getClassOf(context.java),
-        phantomClass = isCustomContext ? objectClass : 'RuntimeObject';
-
-    /** Detect Java environment */
-    var java = /\bJava/.test(javaClass) && context.java;
-
-    /** Detect Rhino */
-    var rhino = java && getClassOf(context.environment) == enviroClass;
-
-    /** A character to represent alpha */
-    var alpha = java ? 'a' : '\u03b1';
-
-    /** A character to represent beta */
-    var beta = java ? 'b' : '\u03b2';
-
-    /** Browser document object */
-    var doc = context.document || {};
-
-    /**
-     * Detect Opera browser (Presto-based)
-     * http://www.howtocreate.co.uk/operaStuff/operaObject.html
-     * http://dev.opera.com/articles/view/opera-mini-web-content-authoring-guidelines/#operamini
-     */
-    var opera = context.operamini || context.opera;
-
-    /** Opera `[[Class]]` */
-    var operaClass = reOpera.test(operaClass = (isCustomContext && opera) ? opera['[[Class]]'] : getClassOf(opera))
-      ? operaClass
-      : (opera = null);
-
-    /*------------------------------------------------------------------------*/
-
-    /** Temporary variable used over the script's lifetime */
-    var data;
-
-    /** The CPU architecture */
-    var arch = ua;
-
-    /** Platform description array */
-    var description = [];
-
-    /** Platform alpha/beta indicator */
-    var prerelease = null;
-
-    /** A flag to indicate that environment features should be used to resolve the platform */
-    var useFeatures = ua == userAgent;
-
-    /** The browser/environment version */
-    var version = useFeatures && opera && typeof opera.version == 'function' && opera.version();
-
-    /** A flag to indicate if the OS ends with "/ Version" */
-    var isSpecialCasedOS;
-
-    /* Detectable layout engines (order is important) */
-    var layout = getLayout([
-      'Trident',
-      { 'label': 'WebKit', 'pattern': 'AppleWebKit' },
-      'iCab',
-      'Presto',
-      'NetFront',
-      'Tasman',
-      'KHTML',
-      'Gecko'
-    ]);
-
-    /* Detectable browser names (order is important) */
-    var name = getName([
-      'Adobe AIR',
-      'Arora',
-      'Avant Browser',
-      'Breach',
-      'Camino',
-      'Epiphany',
-      'Fennec',
-      'Flock',
-      'Galeon',
-      'GreenBrowser',
-      'iCab',
-      'Iceweasel',
-      { 'label': 'SRWare Iron', 'pattern': 'Iron' },
-      'K-Meleon',
-      'Konqueror',
-      'Lunascape',
-      'Maxthon',
-      'Midori',
-      'Nook Browser',
-      'PhantomJS',
-      'Raven',
-      'Rekonq',
-      'RockMelt',
-      'SeaMonkey',
-      { 'label': 'Silk', 'pattern': '(?:Cloud9|Silk-Accelerated)' },
-      'Sleipnir',
-      'SlimBrowser',
-      'Sunrise',
-      'Swiftfox',
-      'WebPositive',
-      'Opera Mini',
-      { 'label': 'Opera Mini', 'pattern': 'OPiOS' },
-      'Opera',
-      { 'label': 'Opera', 'pattern': 'OPR' },
-      'Chrome',
-      { 'label': 'Chrome Mobile', 'pattern': '(?:CriOS|CrMo)' },
-      { 'label': 'Firefox', 'pattern': '(?:Firefox|Minefield)' },
-      { 'label': 'IE', 'pattern': 'IEMobile' },
-      { 'label': 'IE', 'pattern': 'MSIE' },
-      'Safari'
-    ]);
-
-    /* Detectable products (order is important) */
-    var product = getProduct([
-      { 'label': 'BlackBerry', 'pattern': 'BB10' },
-      'BlackBerry',
-      { 'label': 'Galaxy S', 'pattern': 'GT-I9000' },
-      { 'label': 'Galaxy S2', 'pattern': 'GT-I9100' },
-      { 'label': 'Galaxy S3', 'pattern': 'GT-I9300' },
-      { 'label': 'Galaxy S4', 'pattern': 'GT-I9500' },
-      'Google TV',
-      'Lumia',
-      'iPad',
-      'iPod',
-      'iPhone',
-      'Kindle',
-      { 'label': 'Kindle Fire', 'pattern': '(?:Cloud9|Silk-Accelerated)' },
-      'Nook',
-      'PlayBook',
-      'PlayStation 4',
-      'PlayStation 3',
-      'PlayStation Vita',
-      'TouchPad',
-      'Transformer',
-      { 'label': 'Wii U', 'pattern': 'WiiU' },
-      'Wii',
-      'Xbox One',
-      { 'label': 'Xbox 360', 'pattern': 'Xbox' },
-      'Xoom'
-    ]);
-
-    /* Detectable manufacturers */
-    var manufacturer = getManufacturer({
-      'Apple': { 'iPad': 1, 'iPhone': 1, 'iPod': 1 },
-      'Amazon': { 'Kindle': 1, 'Kindle Fire': 1 },
-      'Asus': { 'Transformer': 1 },
-      'Barnes & Noble': { 'Nook': 1 },
-      'BlackBerry': { 'PlayBook': 1 },
-      'Google': { 'Google TV': 1 },
-      'HP': { 'TouchPad': 1 },
-      'HTC': {},
-      'LG': {},
-      'Microsoft': { 'Xbox': 1, 'Xbox One': 1 },
-      'Motorola': { 'Xoom': 1 },
-      'Nintendo': { 'Wii U': 1,  'Wii': 1 },
-      'Nokia': { 'Lumia': 1 },
-      'Samsung': { 'Galaxy S': 1, 'Galaxy S2': 1, 'Galaxy S3': 1, 'Galaxy S4': 1 },
-      'Sony': { 'PlayStation 4': 1, 'PlayStation 3': 1, 'PlayStation Vita': 1 }
-    });
-
-    /* Detectable OSes (order is important) */
-    var os = getOS([
-      'Windows Phone ',
-      'Android',
-      'CentOS',
-      'Debian',
-      'Fedora',
-      'FreeBSD',
-      'Gentoo',
-      'Haiku',
-      'Kubuntu',
-      'Linux Mint',
-      'Red Hat',
-      'SuSE',
-      'Ubuntu',
-      'Xubuntu',
-      'Cygwin',
-      'Symbian OS',
-      'hpwOS',
-      'webOS ',
-      'webOS',
-      'Tablet OS',
-      'Linux',
-      'Mac OS X',
-      'Macintosh',
-      'Mac',
-      'Windows 98;',
-      'Windows '
-    ]);
-
-    /*------------------------------------------------------------------------*/
-
-    /**
-     * Picks the layout engine from an array of guesses.
-     *
-     * @private
-     * @param {Array} guesses An array of guesses.
-     * @returns {null|string} The detected layout engine.
-     */
-    function getLayout(guesses) {
-      return reduce(guesses, function(result, guess) {
-        return result || RegExp('\\b' + (
-          guess.pattern || qualify(guess)
-        ) + '\\b', 'i').exec(ua) && (guess.label || guess);
-      });
-    }
-
-    /**
-     * Picks the manufacturer from an array of guesses.
-     *
-     * @private
-     * @param {Array} guesses An object of guesses.
-     * @returns {null|string} The detected manufacturer.
-     */
-    function getManufacturer(guesses) {
-      return reduce(guesses, function(result, value, key) {
-        // lookup the manufacturer by product or scan the UA for the manufacturer
-        return result || (
-          value[product] ||
-          value[0/*Opera 9.25 fix*/, /^[a-z]+(?: +[a-z]+\b)*/i.exec(product)] ||
-          RegExp('\\b' + qualify(key) + '(?:\\b|\\w*\\d)', 'i').exec(ua)
-        ) && key;
-      });
-    }
-
-    /**
-     * Picks the browser name from an array of guesses.
-     *
-     * @private
-     * @param {Array} guesses An array of guesses.
-     * @returns {null|string} The detected browser name.
-     */
-    function getName(guesses) {
-      return reduce(guesses, function(result, guess) {
-        return result || RegExp('\\b' + (
-          guess.pattern || qualify(guess)
-        ) + '\\b', 'i').exec(ua) && (guess.label || guess);
-      });
-    }
-
-    /**
-     * Picks the OS name from an array of guesses.
-     *
-     * @private
-     * @param {Array} guesses An array of guesses.
-     * @returns {null|string} The detected OS name.
-     */
-    function getOS(guesses) {
-      return reduce(guesses, function(result, guess) {
-        var pattern = guess.pattern || qualify(guess);
-        if (!result && (result =
-              RegExp('\\b' + pattern + '(?:/[\\d.]+|[ \\w.]*)', 'i').exec(ua)
-            )) {
-          result = cleanupOS(result, pattern, guess.label || guess);
-        }
-        return result;
-      });
-    }
-
-    /**
-     * Picks the product name from an array of guesses.
-     *
-     * @private
-     * @param {Array} guesses An array of guesses.
-     * @returns {null|string} The detected product name.
-     */
-    function getProduct(guesses) {
-      return reduce(guesses, function(result, guess) {
-        var pattern = guess.pattern || qualify(guess);
-        if (!result && (result =
-              RegExp('\\b' + pattern + ' *\\d+[.\\w_]*', 'i').exec(ua) ||
-              RegExp('\\b' + pattern + '(?:; *(?:[a-z]+[_-])?[a-z]+\\d+|[^ ();-]*)', 'i').exec(ua)
-            )) {
-          // split by forward slash and append product version if needed
-          if ((result = String((guess.label && !RegExp(pattern, 'i').test(guess.label)) ? guess.label : result).split('/'))[1] && !/[\d.]+/.test(result[0])) {
-            result[0] += ' ' + result[1];
-          }
-          // correct character case and cleanup
-          guess = guess.label || guess;
-          result = format(result[0]
-            .replace(RegExp(pattern, 'i'), guess)
-            .replace(RegExp('; *(?:' + guess + '[_-])?', 'i'), ' ')
-            .replace(RegExp('(' + guess + ')[-_.]?(\\w)', 'i'), '$1 $2'));
-        }
-        return result;
-      });
-    }
-
-    /**
-     * Resolves the version using an array of UA patterns.
-     *
-     * @private
-     * @param {Array} patterns An array of UA patterns.
-     * @returns {null|string} The detected version.
-     */
-    function getVersion(patterns) {
-      return reduce(patterns, function(result, pattern) {
-        return result || (RegExp(pattern +
-          '(?:-[\\d.]+/|(?: for [\\w-]+)?[ /-])([\\d.]+[^ ();/_-]*)', 'i').exec(ua) || 0)[1] || null;
-      });
-    }
-
-    /**
-     * Returns `platform.description` when the platform object is coerced to a string.
-     *
-     * @name toString
-     * @memberOf platform
-     * @returns {string} Returns `platform.description` if available, else an empty string.
-     */
-    function toStringPlatform() {
-      return this.description || '';
-    }
-
-    /*------------------------------------------------------------------------*/
-
-    // convert layout to an array so we can add extra details
-    layout && (layout = [layout]);
-
-    // detect product names that contain their manufacturer's name
-    if (manufacturer && !product) {
-      product = getProduct([manufacturer]);
-    }
-    // clean up Google TV
-    if ((data = /\bGoogle TV\b/.exec(product))) {
-      product = data[0];
-    }
-    // detect simulators
-    if (/\bSimulator\b/i.test(ua)) {
-      product = (product ? product + ' ' : '') + 'Simulator';
-    }
-    // detect Opera Mini 8+ running in Turbo/Uncompressed mode on iOS
-    if (name == 'Opera Mini' && /\bOPiOS\b/.test(ua)) {
-      description.push('running in Turbo/Uncompressed mode');
-    }
-    // detect iOS
-    if (/^iP/.test(product)) {
-      name || (name = 'Safari');
-      os = 'iOS' + ((data = / OS ([\d_]+)/i.exec(ua))
-        ? ' ' + data[1].replace(/_/g, '.')
-        : '');
-    }
-    // detect Kubuntu
-    else if (name == 'Konqueror' && !/buntu/i.test(os)) {
-      os = 'Kubuntu';
-    }
-    // detect Android browsers
-    else if (manufacturer && manufacturer != 'Google' &&
-        ((/Chrome/.test(name) && !/\bMobile Safari\b/i.test(ua)) || /\bVita\b/.test(product))) {
-      name = 'Android Browser';
-      os = /\bAndroid\b/.test(os) ? os : 'Android';
-    }
-    // detect false positives for Firefox/Safari
-    else if (!name || (data = !/\bMinefield\b|\(Android;/i.test(ua) && /\b(?:Firefox|Safari)\b/.exec(name))) {
-      // escape the `/` for Firefox 1
-      if (name && !product && /[\/,]|^[^(]+?\)/.test(ua.slice(ua.indexOf(data + '/') + 8))) {
-        // clear name of false positives
-        name = null;
-      }
-      // reassign a generic name
-      if ((data = product || manufacturer || os) &&
-          (product || manufacturer || /\b(?:Android|Symbian OS|Tablet OS|webOS)\b/.test(os))) {
-        name = /[a-z]+(?: Hat)?/i.exec(/\bAndroid\b/.test(os) ? os : data) + ' Browser';
-      }
-    }
-    // detect Firefox OS
-    if ((data = /\((Mobile|Tablet).*?Firefox\b/i.exec(ua)) && data[1]) {
-      os = 'Firefox OS';
-      if (!product) {
-        product = data[1];
-      }
-    }
-    // detect non-Opera versions (order is important)
-    if (!version) {
-      version = getVersion([
-        '(?:Cloud9|CriOS|CrMo|IEMobile|Iron|Opera ?Mini|OPiOS|OPR|Raven|Silk(?!/[\\d.]+$))',
-        'Version',
-        qualify(name),
-        '(?:Firefox|Minefield|NetFront)'
-      ]);
-    }
-    // detect stubborn layout engines
-    if (layout == 'iCab' && parseFloat(version) > 3) {
-      layout = ['WebKit'];
-    } else if (
-        layout != 'Trident' &&
-        (data =
-          /\bOpera\b/.test(name) && (/\bOPR\b/.test(ua) ? 'Blink' : 'Presto') ||
-          /\b(?:Midori|Nook|Safari)\b/i.test(ua) && 'WebKit' ||
-          !layout && /\bMSIE\b/i.test(ua) && (os == 'Mac OS' ? 'Tasman' : 'Trident')
-        )
-    ) {
-      layout = [data];
-    }
-    // detect NetFront on PlayStation
-    else if (/\bPlayStation\b(?! Vita\b)/i.test(name) && layout == 'WebKit') {
-      layout = ['NetFront'];
-    }
-    // detect Windows Phone 7 desktop mode
-    if (name == 'IE' && (data = (/; *(?:XBLWP|ZuneWP)(\d+)/i.exec(ua) || 0)[1])) {
-      name += ' Mobile';
-      os = 'Windows Phone ' + (/\+$/.test(data) ? data : data + '.x');
-      description.unshift('desktop mode');
-    }
-    // detect Windows Phone 8+ desktop mode
-    else if (/\bWPDesktop\b/i.test(ua)) {
-      name = 'IE Mobile';
-      os = 'Windows Phone 8+';
-      description.unshift('desktop mode');
-      version || (version = (/\brv:([\d.]+)/.exec(ua) || 0)[1]);
-    }
-    // detect IE 11 and above
-    else if (name != 'IE' && layout == 'Trident' && (data = /\brv:([\d.]+)/.exec(ua))) {
-      if (!/\bWPDesktop\b/i.test(ua)) {
-        if (name) {
-          description.push('identifying as ' + name + (version ? ' ' + version : ''));
-        }
-        name = 'IE';
-      }
-      version = data[1];
-    }
-    // detect Microsoft Edge
-    else if ((name == 'Chrome' || name != 'IE') && (data = /\bEdge\/([\d.]+)/.exec(ua))) {
-      name = 'Microsoft Edge';
-      version = data[1];
-      layout = ['Trident'];
-    }
-    // leverage environment features
-    if (useFeatures) {
-      // detect server-side environments
-      // Rhino has a global function while others have a global object
-      if (isHostType(context, 'global')) {
-        if (java) {
-          data = java.lang.System;
-          arch = data.getProperty('os.arch');
-          os = os || data.getProperty('os.name') + ' ' + data.getProperty('os.version');
-        }
-        if (isModuleScope && isHostType(context, 'system') && (data = [context.system])[0]) {
-          os || (os = data[0].os || null);
-          try {
-            data[1] = context.require('ringo/engine').version;
-            version = data[1].join('.');
-            name = 'RingoJS';
-          } catch(e) {
-            if (data[0].global.system == context.system) {
-              name = 'Narwhal';
-            }
-          }
-        }
-        else if (typeof context.process == 'object' && (data = context.process)) {
-          name = 'Node.js';
-          arch = data.arch;
-          os = data.platform;
-          version = /[\d.]+/.exec(data.version)[0];
-        }
-        else if (rhino) {
-          name = 'Rhino';
-        }
-      }
-      // detect Adobe AIR
-      else if (getClassOf((data = context.runtime)) == airRuntimeClass) {
-        name = 'Adobe AIR';
-        os = data.flash.system.Capabilities.os;
-      }
-      // detect PhantomJS
-      else if (getClassOf((data = context.phantom)) == phantomClass) {
-        name = 'PhantomJS';
-        version = (data = data.version || null) && (data.major + '.' + data.minor + '.' + data.patch);
-      }
-      // detect IE compatibility modes
-      else if (typeof doc.documentMode == 'number' && (data = /\bTrident\/(\d+)/i.exec(ua))) {
-        // we're in compatibility mode when the Trident version + 4 doesn't
-        // equal the document mode
-        version = [version, doc.documentMode];
-        if ((data = +data[1] + 4) != version[1]) {
-          description.push('IE ' + version[1] + ' mode');
-          layout && (layout[1] = '');
-          version[1] = data;
-        }
-        version = name == 'IE' ? String(version[1].toFixed(1)) : version[0];
-      }
-      os = os && format(os);
-    }
-    // detect prerelease phases
-    if (version && (data =
-          /(?:[ab]|dp|pre|[ab]\d+pre)(?:\d+\+?)?$/i.exec(version) ||
-          /(?:alpha|beta)(?: ?\d)?/i.exec(ua + ';' + (useFeatures && nav.appMinorVersion)) ||
-          /\bMinefield\b/i.test(ua) && 'a'
-        )) {
-      prerelease = /b/i.test(data) ? 'beta' : 'alpha';
-      version = version.replace(RegExp(data + '\\+?$'), '') +
-        (prerelease == 'beta' ? beta : alpha) + (/\d+\+?/.exec(data) || '');
-    }
-    // detect Firefox Mobile
-    if (name == 'Fennec' || name == 'Firefox' && /\b(?:Android|Firefox OS)\b/.test(os)) {
-      name = 'Firefox Mobile';
-    }
-    // obscure Maxthon's unreliable version
-    else if (name == 'Maxthon' && version) {
-      version = version.replace(/\.[\d.]+/, '.x');
-    }
-    // detect Silk desktop/accelerated modes
-    else if (name == 'Silk') {
-      if (!/\bMobi/i.test(ua)) {
-        os = 'Android';
-        description.unshift('desktop mode');
-      }
-      if (/Accelerated *= *true/i.test(ua)) {
-        description.unshift('accelerated');
-      }
-    }
-    // detect Xbox 360 and Xbox One
-    else if (/\bXbox\b/i.test(product)) {
-      os = null;
-      if (product == 'Xbox 360' && /\bIEMobile\b/.test(ua)) {
-        description.unshift('mobile mode');
-      }
-    }
-    // add mobile postfix
-    else if ((/^(?:Chrome|IE|Opera)$/.test(name) || name && !product && !/Browser|Mobi/.test(name)) &&
-        (os == 'Windows CE' || /Mobi/i.test(ua))) {
-      name += ' Mobile';
-    }
-    // detect IE platform preview
-    else if (name == 'IE' && useFeatures && context.external === null) {
-      description.unshift('platform preview');
-    }
-    // detect BlackBerry OS version
-    // http://docs.blackberry.com/en/developers/deliverables/18169/HTTP_headers_sent_by_BB_Browser_1234911_11.jsp
-    else if ((/\bBlackBerry\b/.test(product) || /\bBB10\b/.test(ua)) && (data =
-          (RegExp(product.replace(/ +/g, ' *') + '/([.\\d]+)', 'i').exec(ua) || 0)[1] ||
-          version
-        )) {
-      data = [data, /BB10/.test(ua)];
-      os = (data[1] ? (product = null, manufacturer = 'BlackBerry') : 'Device Software') + ' ' + data[0];
-      version = null;
-    }
-    // detect Opera identifying/masking itself as another browser
-    // http://www.opera.com/support/kb/view/843/
-    else if (this != forOwn && (
-          product != 'Wii' && (
-            (useFeatures && opera) ||
-            (/Opera/.test(name) && /\b(?:MSIE|Firefox)\b/i.test(ua)) ||
-            (name == 'Firefox' && /\bOS X (?:\d+\.){2,}/.test(os)) ||
-            (name == 'IE' && (
-              (os && !/^Win/.test(os) && version > 5.5) ||
-              /\bWindows XP\b/.test(os) && version > 8 ||
-              version == 8 && !/\bTrident\b/.test(ua)
-            ))
-          )
-        ) && !reOpera.test((data = parse.call(forOwn, ua.replace(reOpera, '') + ';'))) && data.name) {
-
-      // when "indentifying", the UA contains both Opera and the other browser's name
-      data = 'ing as ' + data.name + ((data = data.version) ? ' ' + data : '');
-      if (reOpera.test(name)) {
-        if (/\bIE\b/.test(data) && os == 'Mac OS') {
-          os = null;
-        }
-        data = 'identify' + data;
-      }
-      // when "masking", the UA contains only the other browser's name
-      else {
-        data = 'mask' + data;
-        if (operaClass) {
-          name = format(operaClass.replace(/([a-z])([A-Z])/g, '$1 $2'));
-        } else {
-          name = 'Opera';
-        }
-        if (/\bIE\b/.test(data)) {
-          os = null;
-        }
-        if (!useFeatures) {
-          version = null;
-        }
-      }
-      layout = ['Presto'];
-      description.push(data);
-    }
-    // detect WebKit Nightly and approximate Chrome/Safari versions
-    if ((data = (/\bAppleWebKit\/([\d.]+\+?)/i.exec(ua) || 0)[1])) {
-      // correct build for numeric comparison
-      // (e.g. "532.5" becomes "532.05")
-      data = [parseFloat(data.replace(/\.(\d)$/, '.0$1')), data];
-      // nightly builds are postfixed with a `+`
-      if (name == 'Safari' && data[1].slice(-1) == '+') {
-        name = 'WebKit Nightly';
-        prerelease = 'alpha';
-        version = data[1].slice(0, -1);
-      }
-      // clear incorrect browser versions
-      else if (version == data[1] ||
-          version == (data[2] = (/\bSafari\/([\d.]+\+?)/i.exec(ua) || 0)[1])) {
-        version = null;
-      }
-      // use the full Chrome version when available
-      data[1] = (/\bChrome\/([\d.]+)/i.exec(ua) || 0)[1];
-      // detect Blink layout engine
-      if (data[0] == 537.36 && data[2] == 537.36 && parseFloat(data[1]) >= 28 && name != 'IE' && name != 'Microsoft Edge') {
-        layout = ['Blink'];
-      }
-      // detect JavaScriptCore
-      // http://stackoverflow.com/questions/6768474/how-can-i-detect-which-javascript-engine-v8-or-jsc-is-used-at-runtime-in-androi
-      if (!useFeatures || (!likeChrome && !data[1])) {
-        layout && (layout[1] = 'like Safari');
-        data = (data = data[0], data < 400 ? 1 : data < 500 ? 2 : data < 526 ? 3 : data < 533 ? 4 : data < 534 ? '4+' : data < 535 ? 5 : data < 537 ? 6 : data < 538 ? 7 : data < 601 ? 8 : '8');
-      } else {
-        layout && (layout[1] = 'like Chrome');
-        data = data[1] || (data = data[0], data < 530 ? 1 : data < 532 ? 2 : data < 532.05 ? 3 : data < 533 ? 4 : data < 534.03 ? 5 : data < 534.07 ? 6 : data < 534.10 ? 7 : data < 534.13 ? 8 : data < 534.16 ? 9 : data < 534.24 ? 10 : data < 534.30 ? 11 : data < 535.01 ? 12 : data < 535.02 ? '13+' : data < 535.07 ? 15 : data < 535.11 ? 16 : data < 535.19 ? 17 : data < 536.05 ? 18 : data < 536.10 ? 19 : data < 537.01 ? 20 : data < 537.11 ? '21+' : data < 537.13 ? 23 : data < 537.18 ? 24 : data < 537.24 ? 25 : data < 537.36 ? 26 : layout != 'Blink' ? '27' : '28');
-      }
-      // add the postfix of ".x" or "+" for approximate versions
-      layout && (layout[1] += ' ' + (data += typeof data == 'number' ? '.x' : /[.+]/.test(data) ? '' : '+'));
-      // obscure version for some Safari 1-2 releases
-      if (name == 'Safari' && (!version || parseInt(version) > 45)) {
-        version = data;
-      }
-    }
-    // detect Opera desktop modes
-    if (name == 'Opera' &&  (data = /\bzbov|zvav$/.exec(os))) {
-      name += ' ';
-      description.unshift('desktop mode');
-      if (data == 'zvav') {
-        name += 'Mini';
-        version = null;
-      } else {
-        name += 'Mobile';
-      }
-      os = os.replace(RegExp(' *' + data + '$'), '');
-    }
-    // detect Chrome desktop mode
-    else if (name == 'Safari' && /\bChrome\b/.exec(layout && layout[1])) {
-      description.unshift('desktop mode');
-      name = 'Chrome Mobile';
-      version = null;
-
-      if (/\bOS X\b/.test(os)) {
-        manufacturer = 'Apple';
-        os = 'iOS 4.3+';
-      } else {
-        os = null;
-      }
-    }
-    // strip incorrect OS versions
-    if (version && version.indexOf((data = /[\d.]+$/.exec(os))) == 0 &&
-        ua.indexOf('/' + data + '-') > -1) {
-      os = trim(os.replace(data, ''));
-    }
-    // add layout engine
-    if (layout && !/\b(?:Avant|Nook)\b/.test(name) && (
-        /Browser|Lunascape|Maxthon/.test(name) ||
-        /^(?:Adobe|Arora|Breach|Midori|Opera|Phantom|Rekonq|Rock|Sleipnir|Web)/.test(name) && layout[1])) {
-      // don't add layout details to description if they are falsey
-      (data = layout[layout.length - 1]) && description.push(data);
-    }
-    // combine contextual information
-    if (description.length) {
-      description = ['(' + description.join('; ') + ')'];
-    }
-    // append manufacturer
-    if (manufacturer && product && product.indexOf(manufacturer) < 0) {
-      description.push('on ' + manufacturer);
-    }
-    // append product
-    if (product) {
-      description.push((/^on /.test(description[description.length -1]) ? '' : 'on ') + product);
-    }
-    // parse OS into an object
-    if (os) {
-      data = / ([\d.+]+)$/.exec(os);
-      isSpecialCasedOS = data && os.charAt(os.length - data[0].length - 1) == '/';
-      os = {
-        'architecture': 32,
-        'family': (data && !isSpecialCasedOS) ? os.replace(data[0], '') : os,
-        'version': data ? data[1] : null,
-        'toString': function() {
-          var version = this.version;
-          return this.family + ((version && !isSpecialCasedOS) ? ' ' + version : '') + (this.architecture == 64 ? ' 64-bit' : '');
-        }
-      };
-    }
-    // add browser/OS architecture
-    if ((data = /\b(?:AMD|IA|Win|WOW|x86_|x)64\b/i.exec(arch)) && !/\bi686\b/i.test(arch)) {
-      if (os) {
-        os.architecture = 64;
-        os.family = os.family.replace(RegExp(' *' + data), '');
-      }
-      if (
-          name && (/\bWOW64\b/i.test(ua) ||
-          (useFeatures && /\w(?:86|32)$/.test(nav.cpuClass || nav.platform) && !/\bWin64; x64\b/i.test(ua)))
-      ) {
-        description.unshift('32-bit');
-      }
-    }
-
-    ua || (ua = null);
-
-    /*------------------------------------------------------------------------*/
-
-    /**
-     * The platform object.
-     *
-     * @name platform
-     * @type Object
-     */
-    var platform = {};
-
-    /**
-     * The platform description.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.description = ua;
-
-    /**
-     * The name of the browser's layout engine.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.layout = layout && layout[0];
-
-    /**
-     * The name of the product's manufacturer.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.manufacturer = manufacturer;
-
-    /**
-     * The name of the browser/environment.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.name = name;
-
-    /**
-     * The alpha/beta release indicator.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.prerelease = prerelease;
-
-    /**
-     * The name of the product hosting the browser.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.product = product;
-
-    /**
-     * The browser's user agent string.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.ua = ua;
-
-    /**
-     * The browser/environment version.
-     *
-     * @memberOf platform
-     * @type string|null
-     */
-    platform.version = name && version;
-
-    /**
-     * The name of the operating system.
-     *
-     * @memberOf platform
-     * @type Object
-     */
-    platform.os = os || {
-
-      /**
-       * The CPU architecture the OS is built for.
-       *
-       * @memberOf platform.os
-       * @type number|null
-       */
-      'architecture': null,
-
-      /**
-       * The family of the OS.
-       *
-       * Common values include:
-       * "Windows", "Windows Server 2008 R2 / 7", "Windows Server 2008 / Vista",
-       * "Windows XP", "OS X", "Ubuntu", "Debian", "Fedora", "Red Hat", "SuSE",
-       * "Android", "iOS" and "Windows Phone"
-       *
-       * @memberOf platform.os
-       * @type string|null
-       */
-      'family': null,
-
-      /**
-       * The version of the OS.
-       *
-       * @memberOf platform.os
-       * @type string|null
-       */
-      'version': null,
-
-      /**
-       * Returns the OS string.
-       *
-       * @memberOf platform.os
-       * @returns {string} The OS string.
-       */
-      'toString': function() { return 'null'; }
-    };
-
-    platform.parse = parse;
-    platform.toString = toStringPlatform;
-
-    if (platform.version) {
-      description.unshift(version);
-    }
-    if (platform.name) {
-      description.unshift(name);
-    }
-    if (os && name && !(os == String(os).split(' ')[0] && (os == name.split(' ')[0] || product))) {
-      description.push(product ? '(' + os + ')' : 'on ' + os);
-    }
-    if (description.length) {
-      platform.description = description.join(' ');
-    }
-    return platform;
-  }
-
-  /*--------------------------------------------------------------------------*/
-
-  // export platform
-  // some AMD build optimizers, like r.js, check for condition patterns like the following:
-  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
-    // define as an anonymous module so, through path mapping, it can be aliased
-    define(function() {
-      return parse();
-    });
-  }
-  // check for `exports` after `define` in case a build optimizer adds an `exports` object
-  else if (freeExports && freeModule) {
-    // in Narwhal, Node.js, Rhino -require, or RingoJS
-    forOwn(parse(), function(value, key) {
-      freeExports[key] = value;
-    });
-  }
-  // in a browser or Rhino
-  else {
-    root.platform = parse();
-  }
-}.call(this));