=} opt_values Maps place holder name to value.\r\n * @return {string} message with placeholders filled.\r\n */\r\ngoog.getMsg = function(str, opt_values) {\r\n if (opt_values) {\r\n str = str.replace(/\\{\\$([^}]+)}/g, function(match, key) {\r\n return (opt_values != null && key in opt_values) ? opt_values[key] :\r\n match;\r\n });\r\n }\r\n return str;\r\n};\r\n\r\n\r\n/**\r\n * Gets a localized message. If the message does not have a translation, gives a\r\n * fallback message.\r\n *\r\n * This is useful when introducing a new message that has not yet been\r\n * translated into all languages.\r\n *\r\n * This function is a compiler primitive. Must be used in the form:\r\n * var x = goog.getMsgWithFallback(MSG_A, MSG_B);\r\n * where MSG_A and MSG_B were initialized with goog.getMsg.\r\n *\r\n * @param {string} a The preferred message.\r\n * @param {string} b The fallback message.\r\n * @return {string} The best translated message.\r\n */\r\ngoog.getMsgWithFallback = function(a, b) {\r\n return a;\r\n};\r\n\r\n\r\n/**\r\n * Exposes an unobfuscated global namespace path for the given object.\r\n * Note that fields of the exported object *will* be obfuscated, unless they are\r\n * exported in turn via this function or goog.exportProperty.\r\n *\r\n * Also handy for making public items that are defined in anonymous closures.\r\n *\r\n * ex. goog.exportSymbol('public.path.Foo', Foo);\r\n *\r\n * ex. goog.exportSymbol('public.path.Foo.staticFunction', Foo.staticFunction);\r\n * public.path.Foo.staticFunction();\r\n *\r\n * ex. goog.exportSymbol('public.path.Foo.prototype.myMethod',\r\n * Foo.prototype.myMethod);\r\n * new public.path.Foo().myMethod();\r\n *\r\n * @param {string} publicPath Unobfuscated name to export.\r\n * @param {*} object Object the name should point to.\r\n * @param {Object=} opt_objectToExportTo The object to add the path to; default\r\n * is goog.global.\r\n */\r\ngoog.exportSymbol = function(publicPath, object, opt_objectToExportTo) {\r\n goog.exportPath_(publicPath, object, opt_objectToExportTo);\r\n};\r\n\r\n\r\n/**\r\n * Exports a property unobfuscated into the object's namespace.\r\n * ex. goog.exportProperty(Foo, 'staticFunction', Foo.staticFunction);\r\n * ex. goog.exportProperty(Foo.prototype, 'myMethod', Foo.prototype.myMethod);\r\n * @param {Object} object Object whose static property is being exported.\r\n * @param {string} publicName Unobfuscated name to export.\r\n * @param {*} symbol Object the name should point to.\r\n */\r\ngoog.exportProperty = function(object, publicName, symbol) {\r\n object[publicName] = symbol;\r\n};\r\n\r\n\r\n/**\r\n * Inherit the prototype methods from one constructor into another.\r\n *\r\n * Usage:\r\n * \r\n * function ParentClass(a, b) { }\r\n * ParentClass.prototype.foo = function(a) { };\r\n *\r\n * function ChildClass(a, b, c) {\r\n * ChildClass.base(this, 'constructor', a, b);\r\n * }\r\n * goog.inherits(ChildClass, ParentClass);\r\n *\r\n * var child = new ChildClass('a', 'b', 'see');\r\n * child.foo(); // This works.\r\n * \r\n *\r\n * @param {!Function} childCtor Child class.\r\n * @param {!Function} parentCtor Parent class.\r\n * @suppress {strictMissingProperties} superClass_ and base is not defined on\r\n * Function.\r\n */\r\ngoog.inherits = function(childCtor, parentCtor) {\r\n /** @constructor */\r\n function tempCtor() {}\r\n tempCtor.prototype = parentCtor.prototype;\r\n childCtor.superClass_ = parentCtor.prototype;\r\n childCtor.prototype = new tempCtor();\r\n /** @override */\r\n childCtor.prototype.constructor = childCtor;\r\n\r\n /**\r\n * Calls superclass constructor/method.\r\n *\r\n * This function is only available if you use goog.inherits to\r\n * express inheritance relationships between classes.\r\n *\r\n * NOTE: This is a replacement for goog.base and for superClass_\r\n * property defined in childCtor.\r\n *\r\n * @param {!Object} me Should always be \"this\".\r\n * @param {string} methodName The method name to call. Calling\r\n * superclass constructor can be done with the special string\r\n * 'constructor'.\r\n * @param {...*} var_args The arguments to pass to superclass\r\n * method/constructor.\r\n * @return {*} The return value of the superclass method/constructor.\r\n */\r\n childCtor.base = function(me, methodName, var_args) {\r\n // Copying using loop to avoid deop due to passing arguments object to\r\n // function. This is faster in many JS engines as of late 2014.\r\n var args = new Array(arguments.length - 2);\r\n for (var i = 2; i < arguments.length; i++) {\r\n args[i - 2] = arguments[i];\r\n }\r\n return parentCtor.prototype[methodName].apply(me, args);\r\n };\r\n};\r\n\r\n\r\n/**\r\n * Call up to the superclass.\r\n *\r\n * If this is called from a constructor, then this calls the superclass\r\n * constructor with arguments 1-N.\r\n *\r\n * If this is called from a prototype method, then you must pass the name of the\r\n * method as the second argument to this function. If you do not, you will get a\r\n * runtime error. This calls the superclass' method with arguments 2-N.\r\n *\r\n * This function only works if you use goog.inherits to express inheritance\r\n * relationships between your classes.\r\n *\r\n * This function is a compiler primitive. At compile-time, the compiler will do\r\n * macro expansion to remove a lot of the extra overhead that this function\r\n * introduces. The compiler will also enforce a lot of the assumptions that this\r\n * function makes, and treat it as a compiler error if you break them.\r\n *\r\n * @param {!Object} me Should always be \"this\".\r\n * @param {*=} opt_methodName The method name if calling a super method.\r\n * @param {...*} var_args The rest of the arguments.\r\n * @return {*} The return value of the superclass method.\r\n * @suppress {es5Strict} This method can not be used in strict mode, but\r\n * all Closure Library consumers must depend on this file.\r\n * @deprecated goog.base is not strict mode compatible. Prefer the static\r\n * \"base\" method added to the constructor by goog.inherits\r\n * or ES6 classes and the \"super\" keyword.\r\n */\r\ngoog.base = function(me, opt_methodName, var_args) {\r\n var caller = arguments.callee.caller;\r\n\r\n if (goog.STRICT_MODE_COMPATIBLE || (goog.DEBUG && !caller)) {\r\n throw new Error(\r\n 'arguments.caller not defined. goog.base() cannot be used ' +\r\n 'with strict mode code. See ' +\r\n 'http://www.ecma-international.org/ecma-262/5.1/#sec-C');\r\n }\r\n\r\n if (typeof caller.superClass_ !== 'undefined') {\r\n // Copying using loop to avoid deop due to passing arguments object to\r\n // function. This is faster in many JS engines as of late 2014.\r\n var ctorArgs = new Array(arguments.length - 1);\r\n for (var i = 1; i < arguments.length; i++) {\r\n ctorArgs[i - 1] = arguments[i];\r\n }\r\n // This is a constructor. Call the superclass constructor.\r\n return /** @type {!Function} */ (caller.superClass_)\r\n .constructor.apply(me, ctorArgs);\r\n }\r\n\r\n if (typeof opt_methodName != 'string' && typeof opt_methodName != 'symbol') {\r\n throw new Error(\r\n 'method names provided to goog.base must be a string or a symbol');\r\n }\r\n\r\n // Copying using loop to avoid deop due to passing arguments object to\r\n // function. This is faster in many JS engines as of late 2014.\r\n var args = new Array(arguments.length - 2);\r\n for (var i = 2; i < arguments.length; i++) {\r\n args[i - 2] = arguments[i];\r\n }\r\n var foundCaller = false;\r\n for (var ctor = me.constructor; ctor;\r\n ctor = ctor.superClass_ && ctor.superClass_.constructor) {\r\n if (ctor.prototype[opt_methodName] === caller) {\r\n foundCaller = true;\r\n } else if (foundCaller) {\r\n return ctor.prototype[opt_methodName].apply(me, args);\r\n }\r\n }\r\n\r\n // If we did not find the caller in the prototype chain, then one of two\r\n // things happened:\r\n // 1) The caller is an instance method.\r\n // 2) This method was not called by the right caller.\r\n if (me[opt_methodName] === caller) {\r\n return me.constructor.prototype[opt_methodName].apply(me, args);\r\n } else {\r\n throw new Error(\r\n 'goog.base called from a method of one name ' +\r\n 'to a method of a different name');\r\n }\r\n};\r\n\r\n\r\n/**\r\n * Allow for aliasing within scope functions. This function exists for\r\n * uncompiled code - in compiled code the calls will be inlined and the aliases\r\n * applied. In uncompiled code the function is simply run since the aliases as\r\n * written are valid JavaScript.\r\n *\r\n *\r\n * @param {function()} fn Function to call. This function can contain aliases\r\n * to namespaces (e.g. \"var dom = goog.dom\") or classes\r\n * (e.g. \"var Timer = goog.Timer\").\r\n */\r\ngoog.scope = function(fn) {\r\n if (goog.isInModuleLoader_()) {\r\n throw new Error('goog.scope is not supported within a module.');\r\n }\r\n fn.call(goog.global);\r\n};\r\n\r\n\r\n/*\r\n * To support uncompiled, strict mode bundles that use eval to divide source\r\n * like so:\r\n * eval('someSource;//# sourceUrl sourcefile.js');\r\n * We need to export the globally defined symbols \"goog\" and \"COMPILED\".\r\n * Exporting \"goog\" breaks the compiler optimizations, so we required that\r\n * be defined externally.\r\n * NOTE: We don't use goog.exportSymbol here because we don't want to trigger\r\n * extern generation when that compiler option is enabled.\r\n */\r\nif (!COMPILED) {\r\n goog.global['COMPILED'] = COMPILED;\r\n}\r\n\r\n\r\n//==============================================================================\r\n// goog.defineClass implementation\r\n//==============================================================================\r\n\r\n\r\n/**\r\n * Creates a restricted form of a Closure \"class\":\r\n * - from the compiler's perspective, the instance returned from the\r\n * constructor is sealed (no new properties may be added). This enables\r\n * better checks.\r\n * - the compiler will rewrite this definition to a form that is optimal\r\n * for type checking and optimization (initially this will be a more\r\n * traditional form).\r\n *\r\n * @param {Function} superClass The superclass, Object or null.\r\n * @param {goog.defineClass.ClassDescriptor} def\r\n * An object literal describing\r\n * the class. It may have the following properties:\r\n * \"constructor\": the constructor function\r\n * \"statics\": an object literal containing methods to add to the constructor\r\n * as \"static\" methods or a function that will receive the constructor\r\n * function as its only parameter to which static properties can\r\n * be added.\r\n * all other properties are added to the prototype.\r\n * @return {!Function} The class constructor.\r\n */\r\ngoog.defineClass = function(superClass, def) {\r\n // TODO(johnlenz): consider making the superClass an optional parameter.\r\n var constructor = def.constructor;\r\n var statics = def.statics;\r\n // Wrap the constructor prior to setting up the prototype and static methods.\r\n if (!constructor || constructor == Object.prototype.constructor) {\r\n constructor = function() {\r\n throw new Error(\r\n 'cannot instantiate an interface (no constructor defined).');\r\n };\r\n }\r\n\r\n var cls = goog.defineClass.createSealingConstructor_(constructor, superClass);\r\n if (superClass) {\r\n goog.inherits(cls, superClass);\r\n }\r\n\r\n // Remove all the properties that should not be copied to the prototype.\r\n delete def.constructor;\r\n delete def.statics;\r\n\r\n goog.defineClass.applyProperties_(cls.prototype, def);\r\n if (statics != null) {\r\n if (statics instanceof Function) {\r\n statics(cls);\r\n } else {\r\n goog.defineClass.applyProperties_(cls, statics);\r\n }\r\n }\r\n\r\n return cls;\r\n};\r\n\r\n\r\n/**\r\n * @typedef {{\r\n * constructor: (!Function|undefined),\r\n * statics: (Object|undefined|function(Function):void)\r\n * }}\r\n */\r\ngoog.defineClass.ClassDescriptor;\r\n\r\n\r\n/**\r\n * @define {boolean} Whether the instances returned by goog.defineClass should\r\n * be sealed when possible.\r\n *\r\n * When sealing is disabled the constructor function will not be wrapped by\r\n * goog.defineClass, making it incompatible with ES6 class methods.\r\n */\r\ngoog.defineClass.SEAL_CLASS_INSTANCES =\r\n goog.define('goog.defineClass.SEAL_CLASS_INSTANCES', goog.DEBUG);\r\n\r\n\r\n/**\r\n * If goog.defineClass.SEAL_CLASS_INSTANCES is enabled and Object.seal is\r\n * defined, this function will wrap the constructor in a function that seals the\r\n * results of the provided constructor function.\r\n *\r\n * @param {!Function} ctr The constructor whose results maybe be sealed.\r\n * @param {Function} superClass The superclass constructor.\r\n * @return {!Function} The replacement constructor.\r\n * @private\r\n */\r\ngoog.defineClass.createSealingConstructor_ = function(ctr, superClass) {\r\n if (!goog.defineClass.SEAL_CLASS_INSTANCES) {\r\n // Do now wrap the constructor when sealing is disabled. Angular code\r\n // depends on this for injection to work properly.\r\n return ctr;\r\n }\r\n\r\n // Compute whether the constructor is sealable at definition time, rather\r\n // than when the instance is being constructed.\r\n var superclassSealable = !goog.defineClass.isUnsealable_(superClass);\r\n\r\n /**\r\n * @this {Object}\r\n * @return {?}\r\n */\r\n var wrappedCtr = function() {\r\n // Don't seal an instance of a subclass when it calls the constructor of\r\n // its super class as there is most likely still setup to do.\r\n var instance = ctr.apply(this, arguments) || this;\r\n instance[goog.UID_PROPERTY_] = instance[goog.UID_PROPERTY_];\r\n\r\n if (this.constructor === wrappedCtr && superclassSealable &&\r\n Object.seal instanceof Function) {\r\n Object.seal(instance);\r\n }\r\n return instance;\r\n };\r\n\r\n return wrappedCtr;\r\n};\r\n\r\n\r\n/**\r\n * @param {Function} ctr The constructor to test.\r\n * @return {boolean} Whether the constructor has been tagged as unsealable\r\n * using goog.tagUnsealableClass.\r\n * @private\r\n */\r\ngoog.defineClass.isUnsealable_ = function(ctr) {\r\n return ctr && ctr.prototype &&\r\n ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_];\r\n};\r\n\r\n\r\n// TODO(johnlenz): share these values with the goog.object\r\n/**\r\n * The names of the fields that are defined on Object.prototype.\r\n * @type {!Array}\r\n * @private\r\n * @const\r\n */\r\ngoog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = [\r\n 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',\r\n 'toLocaleString', 'toString', 'valueOf'\r\n];\r\n\r\n\r\n// TODO(johnlenz): share this function with the goog.object\r\n/**\r\n * @param {!Object} target The object to add properties to.\r\n * @param {!Object} source The object to copy properties from.\r\n * @private\r\n */\r\ngoog.defineClass.applyProperties_ = function(target, source) {\r\n // TODO(johnlenz): update this to support ES5 getters/setters\r\n\r\n var key;\r\n for (key in source) {\r\n if (Object.prototype.hasOwnProperty.call(source, key)) {\r\n target[key] = source[key];\r\n }\r\n }\r\n\r\n // For IE the for-in-loop does not contain any properties that are not\r\n // enumerable on the prototype object (for example isPrototypeOf from\r\n // Object.prototype) and it will also not include 'replace' on objects that\r\n // extend String and change 'replace' (not that it is common for anyone to\r\n // extend anything except Object).\r\n for (var i = 0; i < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length; i++) {\r\n key = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[i];\r\n if (Object.prototype.hasOwnProperty.call(source, key)) {\r\n target[key] = source[key];\r\n }\r\n }\r\n};\r\n\r\n\r\n/**\r\n * Sealing classes breaks the older idiom of assigning properties on the\r\n * prototype rather than in the constructor. As such, goog.defineClass\r\n * must not seal subclasses of these old-style classes until they are fixed.\r\n * Until then, this marks a class as \"broken\", instructing defineClass\r\n * not to seal subclasses.\r\n * @param {!Function} ctr The legacy constructor to tag as unsealable.\r\n */\r\ngoog.tagUnsealableClass = function(ctr) {\r\n if (!COMPILED && goog.defineClass.SEAL_CLASS_INSTANCES) {\r\n ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_] = true;\r\n }\r\n};\r\n\r\n\r\n/**\r\n * Name for unsealable tag property.\r\n * @const @private {string}\r\n */\r\ngoog.UNSEALABLE_CONSTRUCTOR_PROPERTY_ = 'goog_defineClass_legacy_unsealable';\r\n\r\n\r\n// There's a bug in the compiler where without collapse properties the\r\n// Closure namespace defines do not guard code correctly. To help reduce code\r\n// size also check for !COMPILED even though it redundant until this is fixed.\r\nif (!COMPILED && goog.DEPENDENCIES_ENABLED) {\r\n\r\n /**\r\n * Tries to detect whether is in the context of an HTML document.\r\n * @return {boolean} True if it looks like HTML document.\r\n * @private\r\n */\r\n goog.inHtmlDocument_ = function() {\r\n /** @type {!Document} */\r\n var doc = goog.global.document;\r\n return doc != null && 'write' in doc; // XULDocument misses write.\r\n };\r\n\r\n\r\n /**\r\n * We'd like to check for if the document readyState is 'loading'; however\r\n * there are bugs on IE 10 and below where the readyState being anything other\r\n * than 'complete' is not reliable.\r\n * @return {boolean}\r\n * @private\r\n */\r\n goog.isDocumentLoading_ = function() {\r\n // attachEvent is available on IE 6 thru 10 only, and thus can be used to\r\n // detect those browsers.\r\n /** @type {!HTMLDocument} */\r\n var doc = goog.global.document;\r\n return doc.attachEvent ? doc.readyState != 'complete' :\r\n doc.readyState == 'loading';\r\n };\r\n\r\n\r\n /**\r\n * Tries to detect the base path of base.js script that bootstraps Closure.\r\n * @private\r\n */\r\n goog.findBasePath_ = function() {\r\n if (goog.isDef(goog.global.CLOSURE_BASE_PATH) &&\r\n // Anti DOM-clobbering runtime check (b/37736576).\r\n goog.isString(goog.global.CLOSURE_BASE_PATH)) {\r\n goog.basePath = goog.global.CLOSURE_BASE_PATH;\r\n return;\r\n } else if (!goog.inHtmlDocument_()) {\r\n return;\r\n }\r\n /** @type {!Document} */\r\n var doc = goog.global.document;\r\n // If we have a currentScript available, use it exclusively.\r\n var currentScript = doc.currentScript;\r\n if (currentScript) {\r\n var scripts = [currentScript];\r\n } else {\r\n var scripts = doc.getElementsByTagName('SCRIPT');\r\n }\r\n // Search backwards since the current script is in almost all cases the one\r\n // that has base.js.\r\n for (var i = scripts.length - 1; i >= 0; --i) {\r\n var script = /** @type {!HTMLScriptElement} */ (scripts[i]);\r\n var src = script.src;\r\n var qmark = src.lastIndexOf('?');\r\n var l = qmark == -1 ? src.length : qmark;\r\n if (src.substr(l - 7, 7) == 'base.js') {\r\n goog.basePath = src.substr(0, l - 7);\r\n return;\r\n }\r\n }\r\n };\r\n\r\n goog.findBasePath_();\r\n\r\n /** @struct @constructor @final */\r\n goog.Transpiler = function() {\r\n /** @private {?Object} */\r\n this.requiresTranspilation_ = null;\r\n /** @private {string} */\r\n this.transpilationTarget_ = goog.TRANSPILE_TO_LANGUAGE;\r\n };\r\n\r\n\r\n /**\r\n * Returns a newly created map from language mode string to a boolean\r\n * indicating whether transpilation should be done for that mode as well as\r\n * the highest level language that this environment supports.\r\n *\r\n * Guaranteed invariant:\r\n * For any two modes, l1 and l2 where l2 is a newer mode than l1,\r\n * `map[l1] == true` implies that `map[l2] == true`.\r\n *\r\n * Note this method is extracted and used elsewhere, so it cannot rely on\r\n * anything external (it should easily be able to be transformed into a\r\n * standalone, top level function).\r\n *\r\n * @private\r\n * @return {{\r\n * target: string,\r\n * map: !Object\r\n * }}\r\n */\r\n goog.Transpiler.prototype.createRequiresTranspilation_ = function() {\r\n var transpilationTarget = 'es3';\r\n var /** !Object */ requiresTranspilation = {'es3': false};\r\n var transpilationRequiredForAllLaterModes = false;\r\n\r\n /**\r\n * Adds an entry to requiresTranspliation for the given language mode.\r\n *\r\n * IMPORTANT: Calls must be made in order from oldest to newest language\r\n * mode.\r\n * @param {string} modeName\r\n * @param {function(): boolean} isSupported Returns true if the JS engine\r\n * supports the given mode.\r\n */\r\n function addNewerLanguageTranspilationCheck(modeName, isSupported) {\r\n if (transpilationRequiredForAllLaterModes) {\r\n requiresTranspilation[modeName] = true;\r\n } else if (isSupported()) {\r\n transpilationTarget = modeName;\r\n requiresTranspilation[modeName] = false;\r\n } else {\r\n requiresTranspilation[modeName] = true;\r\n transpilationRequiredForAllLaterModes = true;\r\n }\r\n }\r\n\r\n /**\r\n * Does the given code evaluate without syntax errors and return a truthy\r\n * result?\r\n */\r\n function /** boolean */ evalCheck(/** string */ code) {\r\n try {\r\n return !!eval(code);\r\n } catch (ignored) {\r\n return false;\r\n }\r\n }\r\n\r\n var userAgent = goog.global.navigator && goog.global.navigator.userAgent ?\r\n goog.global.navigator.userAgent :\r\n '';\r\n\r\n // Identify ES3-only browsers by their incorrect treatment of commas.\r\n addNewerLanguageTranspilationCheck('es5', function() {\r\n return evalCheck('[1,].length==1');\r\n });\r\n addNewerLanguageTranspilationCheck('es6', function() {\r\n // Edge has a non-deterministic (i.e., not reproducible) bug with ES6:\r\n // https://github.com/Microsoft/ChakraCore/issues/1496.\r\n var re = /Edge\\/(\\d+)(\\.\\d)*/i;\r\n var edgeUserAgent = userAgent.match(re);\r\n if (edgeUserAgent) {\r\n // The Reflect.construct test below is flaky on Edge. It can sometimes\r\n // pass or fail on 40 15.15063, so just exit early for Edge and treat\r\n // it as ES5. Until we're on a more up to date version just always use\r\n // ES5. See https://github.com/Microsoft/ChakraCore/issues/3217.\r\n return false;\r\n }\r\n // Test es6: [FF50 (?), Edge 14 (?), Chrome 50]\r\n // (a) default params (specifically shadowing locals),\r\n // (b) destructuring, (c) block-scoped functions,\r\n // (d) for-of (const), (e) new.target/Reflect.construct\r\n var es6fullTest =\r\n 'class X{constructor(){if(new.target!=String)throw 1;this.x=42}}' +\r\n 'let q=Reflect.construct(X,[],String);if(q.x!=42||!(q instanceof ' +\r\n 'String))throw 1;for(const a of[2,3]){if(a==2)continue;function ' +\r\n 'f(z={a}){let a=0;return z.a}{function f(){return 0;}}return f()' +\r\n '==3}';\r\n\r\n return evalCheck('(()=>{\"use strict\";' + es6fullTest + '})()');\r\n });\r\n // ** and **= are the only new features in 'es7'\r\n addNewerLanguageTranspilationCheck('es7', function() {\r\n return evalCheck('2 ** 2 == 4');\r\n });\r\n // async functions are the only new features in 'es8'\r\n addNewerLanguageTranspilationCheck('es8', function() {\r\n return evalCheck('async () => 1, true');\r\n });\r\n addNewerLanguageTranspilationCheck('es9', function() {\r\n return evalCheck('({...rest} = {}), true');\r\n });\r\n addNewerLanguageTranspilationCheck('es_next', function() {\r\n return false; // assume it always need to transpile\r\n });\r\n return {target: transpilationTarget, map: requiresTranspilation};\r\n };\r\n\r\n\r\n /**\r\n * Determines whether the given language needs to be transpiled.\r\n * @param {string} lang\r\n * @param {string|undefined} module\r\n * @return {boolean}\r\n */\r\n goog.Transpiler.prototype.needsTranspile = function(lang, module) {\r\n if (goog.TRANSPILE == 'always') {\r\n return true;\r\n } else if (goog.TRANSPILE == 'never') {\r\n return false;\r\n } else if (!this.requiresTranspilation_) {\r\n var obj = this.createRequiresTranspilation_();\r\n this.requiresTranspilation_ = obj.map;\r\n this.transpilationTarget_ = this.transpilationTarget_ || obj.target;\r\n }\r\n if (lang in this.requiresTranspilation_) {\r\n if (this.requiresTranspilation_[lang]) {\r\n return true;\r\n } else if (\r\n goog.inHtmlDocument_() && module == 'es6' &&\r\n !('noModule' in goog.global.document.createElement('script'))) {\r\n return true;\r\n } else {\r\n return false;\r\n }\r\n } else {\r\n throw new Error('Unknown language mode: ' + lang);\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Lazily retrieves the transpiler and applies it to the source.\r\n * @param {string} code JS code.\r\n * @param {string} path Path to the code.\r\n * @return {string} The transpiled code.\r\n */\r\n goog.Transpiler.prototype.transpile = function(code, path) {\r\n // TODO(johnplaisted): We should delete goog.transpile_ and just have this\r\n // function. But there's some compile error atm where goog.global is being\r\n // stripped incorrectly without this.\r\n return goog.transpile_(code, path, this.transpilationTarget_);\r\n };\r\n\r\n\r\n /** @private @final {!goog.Transpiler} */\r\n goog.transpiler_ = new goog.Transpiler();\r\n\r\n /**\r\n * Rewrites closing script tags in input to avoid ending an enclosing script\r\n * tag.\r\n *\r\n * @param {string} str\r\n * @return {string}\r\n * @private\r\n */\r\n goog.protectScriptTag_ = function(str) {\r\n return str.replace(/<\\/(SCRIPT)/ig, '\\\\x3c/$1');\r\n };\r\n\r\n\r\n /**\r\n * A debug loader is responsible for downloading and executing javascript\r\n * files in an unbundled, uncompiled environment.\r\n *\r\n * This can be custimized via the setDependencyFactory method, or by\r\n * CLOSURE_IMPORT_SCRIPT/CLOSURE_LOAD_FILE_SYNC.\r\n *\r\n * @struct @constructor @final @private\r\n */\r\n goog.DebugLoader_ = function() {\r\n /** @private @const {!Object} */\r\n this.dependencies_ = {};\r\n /** @private @const {!Object} */\r\n this.idToPath_ = {};\r\n /** @private @const {!Object} */\r\n this.written_ = {};\r\n /** @private @const {!Array} */\r\n this.loadingDeps_ = [];\r\n /** @private {!Array} */\r\n this.depsToLoad_ = [];\r\n /** @private {boolean} */\r\n this.paused_ = false;\r\n /** @private {!goog.DependencyFactory} */\r\n this.factory_ = new goog.DependencyFactory(goog.transpiler_);\r\n /** @private @const {!Object} */\r\n this.deferredCallbacks_ = {};\r\n /** @private @const {!Array} */\r\n this.deferredQueue_ = [];\r\n };\r\n\r\n /**\r\n * @param {!Array} namespaces\r\n * @param {function(): undefined} callback Function to call once all the\r\n * namespaces have loaded.\r\n */\r\n goog.DebugLoader_.prototype.bootstrap = function(namespaces, callback) {\r\n var cb = callback;\r\n function resolve() {\r\n if (cb) {\r\n goog.global.setTimeout(cb, 0);\r\n cb = null;\r\n }\r\n }\r\n\r\n if (!namespaces.length) {\r\n resolve();\r\n return;\r\n }\r\n\r\n var deps = [];\r\n for (var i = 0; i < namespaces.length; i++) {\r\n var path = this.getPathFromDeps_(namespaces[i]);\r\n if (!path) {\r\n throw new Error('Unregonized namespace: ' + namespaces[i]);\r\n }\r\n deps.push(this.dependencies_[path]);\r\n }\r\n\r\n var require = goog.require;\r\n var loaded = 0;\r\n for (var i = 0; i < namespaces.length; i++) {\r\n require(namespaces[i]);\r\n deps[i].onLoad(function() {\r\n if (++loaded == namespaces.length) {\r\n resolve();\r\n }\r\n });\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Loads the Closure Dependency file.\r\n *\r\n * Exposed a public function so CLOSURE_NO_DEPS can be set to false, base\r\n * loaded, setDependencyFactory called, and then this called. i.e. allows\r\n * custom loading of the deps file.\r\n */\r\n goog.DebugLoader_.prototype.loadClosureDeps = function() {\r\n // Circumvent addDependency, which would try to transpile deps.js if\r\n // transpile is set to always.\r\n var relPath = 'deps.js';\r\n this.depsToLoad_.push(this.factory_.createDependency(\r\n goog.normalizePath_(goog.basePath + relPath), relPath, [], [], {},\r\n false));\r\n this.loadDeps_();\r\n };\r\n\r\n\r\n /**\r\n * Notifies the debug loader when a dependency has been requested.\r\n *\r\n * @param {string} absPathOrId Path of the dependency or goog id.\r\n * @param {boolean=} opt_force\r\n */\r\n goog.DebugLoader_.prototype.requested = function(absPathOrId, opt_force) {\r\n var path = this.getPathFromDeps_(absPathOrId);\r\n if (path &&\r\n (opt_force || this.areDepsLoaded_(this.dependencies_[path].requires))) {\r\n var callback = this.deferredCallbacks_[path];\r\n if (callback) {\r\n delete this.deferredCallbacks_[path];\r\n callback();\r\n }\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Sets the dependency factory, which can be used to create custom\r\n * goog.Dependency implementations to control how dependencies are loaded.\r\n *\r\n * @param {!goog.DependencyFactory} factory\r\n */\r\n goog.DebugLoader_.prototype.setDependencyFactory = function(factory) {\r\n this.factory_ = factory;\r\n };\r\n\r\n\r\n /**\r\n * Travserses the dependency graph and queues the given dependency, and all of\r\n * its transitive dependencies, for loading and then starts loading if not\r\n * paused.\r\n *\r\n * @param {string} namespace\r\n * @private\r\n */\r\n goog.DebugLoader_.prototype.load_ = function(namespace) {\r\n if (!this.getPathFromDeps_(namespace)) {\r\n var errorMessage = 'goog.require could not find: ' + namespace;\r\n\r\n goog.logToConsole_(errorMessage);\r\n throw Error(errorMessage);\r\n } else {\r\n var loader = this;\r\n\r\n var deps = [];\r\n\r\n /** @param {string} namespace */\r\n var visit = function(namespace) {\r\n var path = loader.getPathFromDeps_(namespace);\r\n\r\n if (!path) {\r\n throw new Error('Bad dependency path or symbol: ' + namespace);\r\n }\r\n\r\n if (loader.written_[path]) {\r\n return;\r\n }\r\n\r\n loader.written_[path] = true;\r\n\r\n var dep = loader.dependencies_[path];\r\n for (var i = 0; i < dep.requires.length; i++) {\r\n if (!goog.isProvided_(dep.requires[i])) {\r\n visit(dep.requires[i]);\r\n }\r\n }\r\n\r\n deps.push(dep);\r\n };\r\n\r\n visit(namespace);\r\n\r\n var wasLoading = !!this.depsToLoad_.length;\r\n this.depsToLoad_ = this.depsToLoad_.concat(deps);\r\n\r\n if (!this.paused_ && !wasLoading) {\r\n this.loadDeps_();\r\n }\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Loads any queued dependencies until they are all loaded or paused.\r\n *\r\n * @private\r\n */\r\n goog.DebugLoader_.prototype.loadDeps_ = function() {\r\n var loader = this;\r\n var paused = this.paused_;\r\n\r\n while (this.depsToLoad_.length && !paused) {\r\n (function() {\r\n var loadCallDone = false;\r\n var dep = loader.depsToLoad_.shift();\r\n\r\n var loaded = false;\r\n loader.loading_(dep);\r\n\r\n var controller = {\r\n pause: function() {\r\n if (loadCallDone) {\r\n throw new Error('Cannot call pause after the call to load.');\r\n } else {\r\n paused = true;\r\n }\r\n },\r\n resume: function() {\r\n if (loadCallDone) {\r\n loader.resume_();\r\n } else {\r\n // Some dep called pause and then resume in the same load call.\r\n // Just keep running this same loop.\r\n paused = false;\r\n }\r\n },\r\n loaded: function() {\r\n if (loaded) {\r\n throw new Error('Double call to loaded.');\r\n }\r\n\r\n loaded = true;\r\n loader.loaded_(dep);\r\n },\r\n pending: function() {\r\n // Defensive copy.\r\n var pending = [];\r\n for (var i = 0; i < loader.loadingDeps_.length; i++) {\r\n pending.push(loader.loadingDeps_[i]);\r\n }\r\n return pending;\r\n },\r\n /**\r\n * @param {goog.ModuleType} type\r\n */\r\n setModuleState: function(type) {\r\n goog.moduleLoaderState_ = {\r\n type: type,\r\n moduleName: '',\r\n declareLegacyNamespace: false\r\n };\r\n },\r\n /** @type {function(string, string, string=)} */\r\n registerEs6ModuleExports: function(\r\n path, exports, opt_closureNamespace) {\r\n if (opt_closureNamespace) {\r\n goog.loadedModules_[opt_closureNamespace] = {\r\n exports: exports,\r\n type: goog.ModuleType.ES6,\r\n moduleId: opt_closureNamespace || ''\r\n };\r\n }\r\n },\r\n /** @type {function(string, ?)} */\r\n registerGoogModuleExports: function(moduleId, exports) {\r\n goog.loadedModules_[moduleId] = {\r\n exports: exports,\r\n type: goog.ModuleType.GOOG,\r\n moduleId: moduleId\r\n };\r\n },\r\n clearModuleState: function() {\r\n goog.moduleLoaderState_ = null;\r\n },\r\n defer: function(callback) {\r\n if (loadCallDone) {\r\n throw new Error(\r\n 'Cannot register with defer after the call to load.');\r\n }\r\n loader.defer_(dep, callback);\r\n },\r\n areDepsLoaded: function() {\r\n return loader.areDepsLoaded_(dep.requires);\r\n }\r\n };\r\n\r\n try {\r\n dep.load(controller);\r\n } finally {\r\n loadCallDone = true;\r\n }\r\n })();\r\n }\r\n\r\n if (paused) {\r\n this.pause_();\r\n }\r\n };\r\n\r\n\r\n /** @private */\r\n goog.DebugLoader_.prototype.pause_ = function() {\r\n this.paused_ = true;\r\n };\r\n\r\n\r\n /** @private */\r\n goog.DebugLoader_.prototype.resume_ = function() {\r\n if (this.paused_) {\r\n this.paused_ = false;\r\n this.loadDeps_();\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Marks the given dependency as loading (load has been called but it has not\r\n * yet marked itself as finished). Useful for dependencies that want to know\r\n * what else is loading. Example: goog.modules cannot eval if there are\r\n * loading dependencies.\r\n *\r\n * @param {!goog.Dependency} dep\r\n * @private\r\n */\r\n goog.DebugLoader_.prototype.loading_ = function(dep) {\r\n this.loadingDeps_.push(dep);\r\n };\r\n\r\n\r\n /**\r\n * Marks the given dependency as having finished loading and being available\r\n * for require.\r\n *\r\n * @param {!goog.Dependency} dep\r\n * @private\r\n */\r\n goog.DebugLoader_.prototype.loaded_ = function(dep) {\r\n for (var i = 0; i < this.loadingDeps_.length; i++) {\r\n if (this.loadingDeps_[i] == dep) {\r\n this.loadingDeps_.splice(i, 1);\r\n break;\r\n }\r\n }\r\n\r\n for (var i = 0; i < this.deferredQueue_.length; i++) {\r\n if (this.deferredQueue_[i] == dep.path) {\r\n this.deferredQueue_.splice(i, 1);\r\n break;\r\n }\r\n }\r\n\r\n if (this.loadingDeps_.length == this.deferredQueue_.length &&\r\n !this.depsToLoad_.length) {\r\n // Something has asked to load these, but they may not be directly\r\n // required again later, so load them now that we know we're done loading\r\n // everything else. e.g. a goog module entry point.\r\n while (this.deferredQueue_.length) {\r\n this.requested(this.deferredQueue_.shift(), true);\r\n }\r\n }\r\n\r\n dep.loaded();\r\n };\r\n\r\n\r\n /**\r\n * @param {!Array} pathsOrIds\r\n * @return {boolean}\r\n * @private\r\n */\r\n goog.DebugLoader_.prototype.areDepsLoaded_ = function(pathsOrIds) {\r\n for (var i = 0; i < pathsOrIds.length; i++) {\r\n var path = this.getPathFromDeps_(pathsOrIds[i]);\r\n if (!path ||\r\n (!(path in this.deferredCallbacks_) &&\r\n !goog.isProvided_(pathsOrIds[i]))) {\r\n return false;\r\n }\r\n }\r\n\r\n return true;\r\n };\r\n\r\n\r\n /**\r\n * @param {string} absPathOrId\r\n * @return {?string}\r\n * @private\r\n */\r\n goog.DebugLoader_.prototype.getPathFromDeps_ = function(absPathOrId) {\r\n if (absPathOrId in this.idToPath_) {\r\n return this.idToPath_[absPathOrId];\r\n } else if (absPathOrId in this.dependencies_) {\r\n return absPathOrId;\r\n } else {\r\n return null;\r\n }\r\n };\r\n\r\n\r\n /**\r\n * @param {!goog.Dependency} dependency\r\n * @param {!Function} callback\r\n * @private\r\n */\r\n goog.DebugLoader_.prototype.defer_ = function(dependency, callback) {\r\n this.deferredCallbacks_[dependency.path] = callback;\r\n this.deferredQueue_.push(dependency.path);\r\n };\r\n\r\n\r\n /**\r\n * Interface for goog.Dependency implementations to have some control over\r\n * loading of dependencies.\r\n *\r\n * @record\r\n */\r\n goog.LoadController = function() {};\r\n\r\n\r\n /**\r\n * Tells the controller to halt loading of more dependencies.\r\n */\r\n goog.LoadController.prototype.pause = function() {};\r\n\r\n\r\n /**\r\n * Tells the controller to resume loading of more dependencies if paused.\r\n */\r\n goog.LoadController.prototype.resume = function() {};\r\n\r\n\r\n /**\r\n * Tells the controller that this dependency has finished loading.\r\n *\r\n * This causes this to be removed from pending() and any load callbacks to\r\n * fire.\r\n */\r\n goog.LoadController.prototype.loaded = function() {};\r\n\r\n\r\n /**\r\n * List of dependencies on which load has been called but which have not\r\n * called loaded on their controller. This includes the current dependency.\r\n *\r\n * @return {!Array}\r\n */\r\n goog.LoadController.prototype.pending = function() {};\r\n\r\n\r\n /**\r\n * Registers an object as an ES6 module's exports so that goog.modules may\r\n * require it by path.\r\n *\r\n * @param {string} path Full path of the module.\r\n * @param {?} exports\r\n * @param {string=} opt_closureNamespace Closure namespace to associate with\r\n * this module.\r\n */\r\n goog.LoadController.prototype.registerEs6ModuleExports = function(\r\n path, exports, opt_closureNamespace) {};\r\n\r\n\r\n /**\r\n * Sets the current module state.\r\n *\r\n * @param {goog.ModuleType} type Type of module.\r\n */\r\n goog.LoadController.prototype.setModuleState = function(type) {};\r\n\r\n\r\n /**\r\n * Clears the current module state.\r\n */\r\n goog.LoadController.prototype.clearModuleState = function() {};\r\n\r\n\r\n /**\r\n * Registers a callback to call once the dependency is actually requested\r\n * via goog.require + all of the immediate dependencies have been loaded or\r\n * all other files have been loaded. Allows for lazy loading until\r\n * require'd without pausing dependency loading, which is needed on old IE.\r\n *\r\n * @param {!Function} callback\r\n */\r\n goog.LoadController.prototype.defer = function(callback) {};\r\n\r\n\r\n /**\r\n * @return {boolean}\r\n */\r\n goog.LoadController.prototype.areDepsLoaded = function() {};\r\n\r\n\r\n /**\r\n * Basic super class for all dependencies Closure Library can load.\r\n *\r\n * This default implementation is designed to load untranspiled, non-module\r\n * scripts in a web broswer.\r\n *\r\n * For transpiled non-goog.module files {@see goog.TranspiledDependency}.\r\n * For goog.modules see {@see goog.GoogModuleDependency}.\r\n * For untranspiled ES6 modules {@see goog.Es6ModuleDependency}.\r\n *\r\n * @param {string} path Absolute path of this script.\r\n * @param {string} relativePath Path of this script relative to goog.basePath.\r\n * @param {!Array} provides goog.provided or goog.module symbols\r\n * in this file.\r\n * @param {!Array} requires goog symbols or relative paths to Closure\r\n * this depends on.\r\n * @param {!Object} loadFlags\r\n * @struct @constructor\r\n */\r\n goog.Dependency = function(\r\n path, relativePath, provides, requires, loadFlags) {\r\n /** @const */\r\n this.path = path;\r\n /** @const */\r\n this.relativePath = relativePath;\r\n /** @const */\r\n this.provides = provides;\r\n /** @const */\r\n this.requires = requires;\r\n /** @const */\r\n this.loadFlags = loadFlags;\r\n /** @private {boolean} */\r\n this.loaded_ = false;\r\n /** @private {!Array} */\r\n this.loadCallbacks_ = [];\r\n };\r\n\r\n\r\n /**\r\n * @return {string} The pathname part of this dependency's path if it is a\r\n * URI.\r\n */\r\n goog.Dependency.prototype.getPathName = function() {\r\n var pathName = this.path;\r\n var protocolIndex = pathName.indexOf('://');\r\n if (protocolIndex >= 0) {\r\n pathName = pathName.substring(protocolIndex + 3);\r\n var slashIndex = pathName.indexOf('/');\r\n if (slashIndex >= 0) {\r\n pathName = pathName.substring(slashIndex + 1);\r\n }\r\n }\r\n return pathName;\r\n };\r\n\r\n\r\n /**\r\n * @param {function()} callback Callback to fire as soon as this has loaded.\r\n * @final\r\n */\r\n goog.Dependency.prototype.onLoad = function(callback) {\r\n if (this.loaded_) {\r\n callback();\r\n } else {\r\n this.loadCallbacks_.push(callback);\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Marks this dependency as loaded and fires any callbacks registered with\r\n * onLoad.\r\n * @final\r\n */\r\n goog.Dependency.prototype.loaded = function() {\r\n this.loaded_ = true;\r\n var callbacks = this.loadCallbacks_;\r\n this.loadCallbacks_ = [];\r\n for (var i = 0; i < callbacks.length; i++) {\r\n callbacks[i]();\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Whether or not document.written / appended script tags should be deferred.\r\n *\r\n * @private {boolean}\r\n */\r\n goog.Dependency.defer_ = false;\r\n\r\n\r\n /**\r\n * Map of script ready / state change callbacks. Old IE cannot handle putting\r\n * these properties on goog.global.\r\n *\r\n * @private @const {!Object}\r\n */\r\n goog.Dependency.callbackMap_ = {};\r\n\r\n\r\n /**\r\n * @param {function(...?):?} callback\r\n * @return {string}\r\n * @private\r\n */\r\n goog.Dependency.registerCallback_ = function(callback) {\r\n var key = Math.random().toString(32);\r\n goog.Dependency.callbackMap_[key] = callback;\r\n return key;\r\n };\r\n\r\n\r\n /**\r\n * @param {string} key\r\n * @private\r\n */\r\n goog.Dependency.unregisterCallback_ = function(key) {\r\n delete goog.Dependency.callbackMap_[key];\r\n };\r\n\r\n\r\n /**\r\n * @param {string} key\r\n * @param {...?} var_args\r\n * @private\r\n * @suppress {unusedPrivateMembers}\r\n */\r\n goog.Dependency.callback_ = function(key, var_args) {\r\n if (key in goog.Dependency.callbackMap_) {\r\n var callback = goog.Dependency.callbackMap_[key];\r\n var args = [];\r\n for (var i = 1; i < arguments.length; i++) {\r\n args.push(arguments[i]);\r\n }\r\n callback.apply(undefined, args);\r\n } else {\r\n var errorMessage = 'Callback key ' + key +\r\n ' does not exist (was base.js loaded more than once?).';\r\n throw Error(errorMessage);\r\n }\r\n };\r\n\r\n\r\n /**\r\n * Starts loading this dependency. This dependency can pause loading if it\r\n * needs to and resume it later via the controller interface.\r\n *\r\n * When this is loaded it should call controller.loaded(). Note that this will\r\n * end up calling the loaded method of this dependency; there is no need to\r\n * call it explicitly.\r\n *\r\n * @param {!goog.LoadController} controller\r\n */\r\n goog.Dependency.prototype.load = function(controller) {\r\n if (goog.global.CLOSURE_IMPORT_SCRIPT) {\r\n if (goog.global.CLOSURE_IMPORT_SCRIPT(this.path)) {\r\n controller.loaded();\r\n } else {\r\n controller.pause();\r\n }\r\n return;\r\n }\r\n\r\n if (!goog.inHtmlDocument_()) {\r\n goog.logToConsole_(\r\n 'Cannot use default debug loader outside of HTML documents.');\r\n if (this.relativePath == 'deps.js') {\r\n // Some old code is relying on base.js auto loading deps.js failing with\r\n // no error before later setting CLOSURE_IMPORT_SCRIPT.\r\n // CLOSURE_IMPORT_SCRIPT should be set *before* base.js is loaded, or\r\n // CLOSURE_NO_DEPS set to true.\r\n goog.logToConsole_(\r\n 'Consider setting CLOSURE_IMPORT_SCRIPT before loading base.js, ' +\r\n 'or setting CLOSURE_NO_DEPS to true.');\r\n controller.loaded();\r\n } else {\r\n controller.pause();\r\n }\r\n return;\r\n }\r\n\r\n /** @type {!HTMLDocument} */\r\n var doc = goog.global.document;\r\n\r\n // If the user tries to require a new symbol after document load,\r\n // something has gone terribly wrong. Doing a document.write would\r\n // wipe out the page. This does not apply to the CSP-compliant method\r\n // of writing script tags.\r\n if (doc.readyState == 'complete' &&\r\n !goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING) {\r\n // Certain test frameworks load base.js multiple times, which tries\r\n // to write deps.js each time. If that happens, just fail silently.\r\n // These frameworks wipe the page between each load of base.js, so this\r\n // is OK.\r\n var isDeps = /\\bdeps.js$/.test(this.path);\r\n if (isDeps) {\r\n controller.loaded();\r\n return;\r\n } else {\r\n throw Error('Cannot write \"' + this.path + '\" after document load');\r\n }\r\n }\r\n\r\n if (!goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING &&\r\n goog.isDocumentLoading_()) {\r\n var key = goog.Dependency.registerCallback_(function(script) {\r\n if (!goog.DebugLoader_.IS_OLD_IE_ || script.readyState == 'complete') {\r\n goog.Dependency.unregisterCallback_(key);\r\n controller.loaded();\r\n }\r\n });\r\n var nonceAttr = !goog.DebugLoader_.IS_OLD_IE_ && goog.getScriptNonce() ?\r\n ' nonce=\"' + goog.getScriptNonce() + '\"' :\r\n '';\r\n var event =\r\n goog.DebugLoader_.IS_OLD_IE_ ? 'onreadystatechange' : 'onload';\r\n var defer = goog.Dependency.defer_ ? 'defer' : '';\r\n var script = '