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5padding:"inner"+a,content:b,"":"outer"+a},function(c,d){n.fn[d]=function(d,e){var f=arguments.length&&(c||"boolean"!=typeof d),g=c||(d===!0||e===!0?"margin":"border");return Y(this,function(b,c,d){var e;return n.isWindow(b)?b.document.documentElement["client"+a]:9===b.nodeType?(e=b.documentElement,Math.max(b.body["scroll"+a],e["scroll"+a],b.body["offset"+a],e["offset"+a],e["client"+a])):void 0===d?n.css(b,c,g):n.style(b,c,d,g)},b,f?d:void 0,f,null)}})}),n.fn.extend({bind:function(a,b,c){return this.on(a,null,b,c)},unbind:function(a,b){return this.off(a,null,b)},delegate:function(a,b,c,d){return this.on(b,a,c,d)},undelegate:function(a,b,c){return 1===arguments.length?this.off(a,"**"):this.off(b,a||"**",c)}}),n.fn.size=function(){return this.length},n.fn.andSelf=n.fn.addBack,"function"==typeof define&&define.amd&&define("jquery",[],function(){return n});var nc=a.jQuery,oc=a.$;return n.noConflict=function(b){return a.$===n&&(a.$=oc),b&&a.jQuery===n&&(a.jQuery=nc),n},b||(a.jQuery=a.$=n),n});

43
44    //Could match something like ')//comment', do not lose the prefix to comment.
45    function commentReplace(match, singlePrefix) {
46        return singlePrefix || '';
47    }
48
49    function isFunction(it) {
50        return ostring.call(it) === '[object Function]';
51    }
52
53    function isArray(it) {
54        return ostring.call(it) === '[object Array]';
55    }
56
57    /**
58     * Helper function for iterating over an array. If the func returns
59     * a true value, it will break out of the loop.
60     */
61    function each(ary, func) {
62        if (ary) {
63            var i;
64            for (i = 0; i < ary.length; i += 1) {
65                if (ary[i] && func(ary[i], i, ary)) {
66                    break;
67                }
68            }
69        }
70    }
71
72    /**
73     * Helper function for iterating over an array backwards. If the func
74     * returns a true value, it will break out of the loop.
75     */
76    function eachReverse(ary, func) {
77        if (ary) {
78            var i;
79            for (i = ary.length - 1; i > -1; i -= 1) {
80                if (ary[i] && func(ary[i], i, ary)) {
81                    break;
82                }
83            }
84        }
85    }
86
87    function hasProp(obj, prop) {
88        return hasOwn.call(obj, prop);
89    }
90
91    function getOwn(obj, prop) {
92        return hasProp(obj, prop) && obj[prop];
93    }
94
95    /**
96     * Cycles over properties in an object and calls a function for each
97     * property value. If the function returns a truthy value, then the
98     * iteration is stopped.
99     */
100    function eachProp(obj, func) {
101        var prop;
102        for (prop in obj) {
103            if (hasProp(obj, prop)

103) {
104                if (func(obj[prop], prop)) {
105                    break;
106                }
107            }
108        }
109    }
110
111    /**
112     * Simple function to mix in properties from source into target,
113     * but only if target does not already have a property of the same name.
114     */
115    function mixin(target, source, force, deepStringMixin) {
116        if (source) {
117            eachProp(source, function (value, prop) {
118                if (force || !hasProp(target, prop)) {
119                    if (deepStringMixin && typeof value === 'object' && value &&
120                        !isArray(value) && !isFunction(value) &&
121                        !(value instanceof RegExp)) {
122
123                        if (!target[prop]) {
124                            target[prop] = {};
125                        }
126                        mixin(target[prop], value, force, deepStringMixin);
127                    } else {
128                        target[prop] = value;
129                    }
130                }
131            });
132        }
133        return target;
134    }
135
136    //Similar to Function.prototype.bind, but the 'this' object is specified
137    //first, since it is easier to read/figure out what 'this' will be.
138    function bind(obj, fn) {
139        return function () {
140            return fn.apply(obj, arguments);
141        };
142    }
143
144    function scripts() {
145        return document.getElementsByTagName('script');
146    }
147
148    function defaultOnError(err) {
149        throw err;
150    }
151
152    //Allow getting a global that is expressed in
153    //dot notation, like 'a.b.c'.
154    function getGlobal(value) {
155        if (!value) {
156            return value;
157        }
158        var g = global;
159        each(value.split('.'), function (part) {
160            g = g[part];
161        });
162        return g;
163    }
164
165    /**
166     * Constructs an error with a pointer to an URL with more information.
167     * @param {String} id the error ID that maps to an ID on a web page.
168     * @param {String} message human readable error.
169     * @param {Error} [err] the original error, if there is one.
170     *
171     * @returns {Error}
172     */
173    function makeError(id, msg, err, requireModules) {
174        var e = new Error(msg + '\nhttps://requirejs.org/docs/errors.html#' + id);
175        e.requireType = id;
176        e.requireModules = requireModules;
177        if (err) {
178            e.originalError = err;
179        }
180        return e;
181    }
182
183    if (typeof define !== 'undefined') {
184        //If a define is already in play via another AMD loader,
185        //do not overwrite.
186        return;
187    }
188
189    if (typeof requirejs !== 'undefined') {
190        if (isFunction(requirejs)) {
191            //Do not overwrite an existing requirejs instance.
192            return;
193        }
194        cfg = requirejs;
195        requirejs = undefined;
196    }
197
198    //Allow for a require config object
199    if (typeof require !== 'undefined' && !isFunction(require)) {
200        //assume it is a config object.
201        cfg = require;
202        require = undefined;
203    }
204
205    function newContext(contextName) {
206        var inCheckLoaded, Module, context, handlers,
207            checkLoadedTimeoutId,
208            config = {
209                //Defaults. Do not set a default for map
210                //config to speed up normalize(), which
211                //will run faster if there is no default.
212                waitSeconds: 7,
213                baseUrl: './',
214                paths: {},
215                bundles: {},
216                pkgs: {},
217                shim: {},
218                config: {}
219            },
220            registry = {},
221            //registry of just enabled modules, to speed
222            //cycle breaking code when lots of modules
223            //are registered, but not activated.
224            enabledRegistry = {},
225            undefEvents = {},
226            defQueue = [],
227            defined = {},
228            urlFetched = {},
229            bundlesMap = {},
230            requireCounter = 1,
231            unnormalizedCounter = 1;
232
233        /**
234         * Trims the . and .. from an array of path segments.
235         * It will keep a leading path segment if a .. will become
236         * the first path segment, to help with module name lookups,
237         * which act like paths, but can be remapped. But the end result,
238         * all paths that use this function should look normalized.
239         * NOTE: this method MODIFIES the input array.
240         * @param {Array} ary the array of path segments.
241         */
242        function trimDots(ary) {
243            var i, part;
244            for (i = 0; i < ary.length; i++) {
245                part = ary[i];
246                if (part === '.') {
247                    ary.splice(i, 1);
248                    i -= 1;
249                } else if (part === '..') {
250                    // If at the start, or previous value is still ..,
251                    // keep them so that when converted to a path it may
252                    // still work when converted to a path, even though
253                    // as an ID it is less than ideal. In larger point
254                    // releases, may be better to just kick out an error.
255                    if (i === 0 || (i === 1 && ary[2] === '..') || ary[i - 1] === '..') {
256                        continue;
257                    } else if (i > 0) {
258                        ary.splice(i - 1, 2);
259                        i -= 2;
260                    }
261                }
262            }
263        }
264
265        /**
266         * Given a relative module name, like ./something, normalize it to
267         * a real name that can be mapped to a path.
268         * @param {String} name the relative name
269         * @param {String} baseName a real name that the name arg is relative
270         * to.
271         * @param {Boolean} applyMap apply the map config to the value. Should
272         * only be done if this normalization is for a dependency ID.
273         * @returns {String} normalized name
274         */
275        function normalize(name, baseName, applyMap) {
276            var pkgMain, mapValue, nameParts, i, j, nameSegment, lastIndex,
277                foundMap, foundI, foundStarMap, starI, normalizedBaseParts,
278                baseParts = (baseName && baseName.split('/')),
279                map = config.map,
280                starMap = map && map['*'];
281
282            //Adjust any relative paths.
283            if (name) {
284                name = name.split('/');
285                lastIndex = name.length - 1;
286
287                // If wanting node ID compatibility, strip .js from end
288                // of IDs. Have to do this here, and not in nameToUrl
289                // because node allows either .js or non .js to map
290                // to same file.
291                if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) {
292                    name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, '');
293                }
294
295                // Starts with a '.' so need the baseName
296                if (name[0].charAt(0) === '.' && baseParts) {
297                    //Convert baseName to array, and lop off the last part,
298                    //so that . matches that 'directory' and not name of the baseName's
299                    //module. For instance, baseName of 'one/two/three', maps to
300                    //'one/two/three.js', but we want the directory, 'one/two' for
301                    //this normalization.
302                    normalizedBaseParts = baseParts.slice(0, baseParts.length - 1);
303                    name = normalizedBaseParts.concat(name);
304                }
305
306                trimDots(name);
307                name = name.join('/');
308            }
309
310            //Apply map config if available.
311            if (applyMap && map && (baseParts || starMap)) {
312                nameParts = name.split('/');
313
314                outerLoop: for (i = nameParts.length; i > 0; i -= 1) {
315                    nameSegment = nameParts.slice(0, i).join('/');
316
317                    if (baseParts) {
318                        //Find the longest baseName segment match in the config.
319                        //So, do joins on the biggest to smallest lengths of baseParts.
320                        for (j = baseParts.length; j > 0; j -= 1) {
321                            mapValue = getOwn(map, baseParts.slice(0, j).join('/'));
322
323                            //baseName segment has config, find if it has one for
324                            //this name.
325                            if (mapValue) {
326                                mapValue = getOwn(mapValue, nameSegment);
327                                if (mapValue) {
328                                    //Match, update name to the new value.
329                                    foundMap = mapValue;
330                                    foundI = i;
331                                    break outerLoop;
332                                }
333                            }
334                        }
335                    }
336
337                    //Check for a star map match, but just hold on to it,
338                    //if there is a shorter segment match later in a matching
339                    //config, then favor over this star map.
340                    if (!foundStarMap && starMap && getOwn(starMap, nameSegment)) {
341                        foundStarMap = getOwn(starMap, nameSegment);
342                        starI = i;
343                    }
344                }
345
346                if (!foundMap && foundStarMap) {
347                    foundMap = foundStarMap;
348                    foundI = starI;
349                }
350
351                if (foundMap) {
352                    nameParts.splice(0, foundI, foundMap);
353                    name = nameParts.join('/');
354                }
355            }
356
357            // If the name points to a package's name, use
358            // the package main instead.
359            pkgMain = getOwn(config.pkgs, name);
360
361            return pkgMain ? pkgMain : name;
362        }
363
364        function removeScript(name) {
365            if (isBrowser) {
366                each(scripts(), function (scriptNode) {
367                    if (scriptNode.getAttribute('data-requiremodule') === name &&
368                            scriptNode.getAttribute('data-requirecontext') === context.contextName) {
369                        scriptNode.parentNode.removeChild(scriptNode);
370                        return true;
371                    }
372                });
373            }
374        }
375
376        function hasPathFallback(id) {
377            var pathConfig = getOwn(config.paths, id);
378            if (pathConfig && isArray(pathConfig) && pathConfig.length > 1) {
379                //Pop off the first array value, since it failed, and
380                //retry
381                pathConfig.shift();
382                context.require.undef(id);
383
384                //Custom require that does not do map translation, since
385                //ID is "absolute", already mapped/resolved.
386                context.makeRequire(null, {
387                    skipMap: true
388                })([id]);
389
390                return true;
391            }
392        }
393
394        //Turns a plugin!resource to [plugin, resource]
395        //with the plugin being undefined if the name
396        //did not have a plugin prefix.
397        function splitPrefix(name) {
398            var prefix,
399                index = name ? name.indexOf('!') : -1;
400            if (index > -1) {
401                prefix = name.substring(0, index);
402                name = name.substring(index + 1, name.length);
403            }
404            return [prefix, name];
405        }
406
407        /**
408         * Creates a module mapping that includes plugin prefix, module
409         * name, and path. If parentModuleMap is provided it will
410         * also normalize the name via require.normalize()
411         *
412         * @param {String} name the module name
413         * @param {String} [parentModuleMap] parent module map
414         * for the module name, used to resolve relative names.
415         * @param {Boolean} isNormalized: is the ID already normalized.
416         * This is true if this call is done for a define() module ID.
417         * @param {Boolean} applyMap: apply the map config to the ID.
418         * Should only be true if this map is for a dependency.
419         *
420         * @returns {Object}
421         */
422        function makeModuleMap(name, parentModuleMap, isNormalized, applyMap) {
423            var url, pluginModule, suffix, nameParts,
424                prefix = null,
425                parentName = parentModuleMap ? parentModuleMap.name : null,
426                originalName = name,
427                isDefine = true,
428                normalizedName = '';
429
430            //If no name, then it means it is a require call, generate an
431            //internal name.
432            if (!name) {
433                isDefine = false;
434                name = '_@r' + (requireCounter += 1);
435            }
436
437            nameParts = splitPrefix(name);
438            prefix = nameParts[0];
439            name = nameParts[1];
440
441            if (prefix) {
442                prefix = normalize(prefix, parentName, applyMap);
443                pluginModule = getOwn(defined, prefix);
444            }
445
446            //Account for relative paths if there is a base name.
447            if (name) {
448                if (prefix) {
449                    if (isNormalized) {
450                        normalizedName = name;
451                    } else if (pluginModule && pluginModule.normalize) {
452                        //Plugin is loaded, use its normalize method.
453                        normalizedName = pluginModule.normalize(name, function (name) {
454                            return normalize(name, parentName, applyMap);
455                        });
456                    } else {
457                        // If nested plugin references, then do not try to
458                        // normalize, as it will not normalize correctly. This
459                        // places a restriction on resourceIds, and the longer
460                        // term solution is not to normalize until plugins are
461                        // loaded and all normalizations to allow for async
462                        // loading of a loader plugin. But for now, fixes the
463                        // common uses. Details in #1131
464                        normalizedName = name.indexOf('!') === -1 ?
465                                         normalize(name, parentName, applyMap) :
466                                         name;
467                    }
468                } else {
469                    //A regular module.
470                    normalizedName = normalize(name, parentName, applyMap);
471
472                    //Normalized name may be a plugin ID due to map config
473                    //application in normalize. The map config values must
474                    //already be normalized, so do not need to redo that part.
475                    nameParts = splitPrefix(normalizedName);
476                    prefix = nameParts[0];
477                    normalizedName = nameParts[1];
478                    isNormalized = true;
479
480                    url = context.nameToUrl(normalizedName);
481                }
482            }
483
484            //If the id is a plugin id that cannot be determined if it needs
485            //normalization, stamp it with a unique ID so two matching relative
486            //ids that may conflict can be separate.
487            suffix = prefix && !pluginModule && !isNormalized ?
488                     '_unnormalized' + (unnormalizedCounter += 1) :
489                     '';
490
491            return {
492                prefix: prefix,
493                name: normalizedName,
494                parentMap: parentModuleMap,
495                unnormalized: !!suffix,
496                url: url,
497                originalName: originalName,
498                isDefine: isDefine,
499                id: (prefix ?
500                        prefix + '!' + normalizedName :
501                        normalizedName) + suffix
502            };
503        }
504
505        function getModule(depMap) {
506            var id = depMap.id,
507                mod = getOwn(registry, id);
508
509            if (!mod) {
510                mod = registry[id] = new context.Module(depMap);
511            }
512
513            return mod;
514        }
515
516        function on(depMap, name, fn) {
517            var id = depMap.id,
518                mod = getOwn(registry, id);
519
520            if (hasProp(defined, id) &&
521                    (!mod || mod.defineEmitComplete)) {
522                if (name === 'defined') {
523                    fn(defined[id]);
524                }
525            } else {
526                mod = getModule(depMap);
527                if (mod.error && name === 'error') {
528                    fn(mod.error);
529                } else {
530                    mod.on(name, fn);
531                }
532            }
533        }
534
535        function onError(err, errback) {
536            var ids = err.requireModules,
537                notified = false;
538
539            if (errback) {
540                errback(err);
541            } else {
542                each(ids, function (id) {
543                    var mod = getOwn(registry, id);
544                    if (mod) {
545                        //Set error on module, so it skips timeout checks.
546                        mod.error = err;
547                        if (mod.events.error) {
548                            notified = true;
549                            mod.emit('error', err);
550                        }
551                    }
552                });
553
554                if (!notified) {
555                    req.onError(err);
556                }
557            }
558        }
559
560        /**
561         * Internal method to transfer globalQueue items to this context's
562         * defQueue.
563         */
564        function takeGlobalQueue() {
565            //Push all the globalDefQueue items into the context's defQueue
566            if (globalDefQueue.length) {
567                each(globalDefQueue, function(queueItem) {
568                    var id = queueItem[0];
569                    if (typeof id === 'string') {
570                        context.defQueueMap[id] = true;
571                    }
572                    defQueue.push(queueItem);
573                });
574                globalDefQueue = [];
575            }
576        }
577
578        handlers = {
579            'require': function (mod) {
580                if (mod.require) {
581                    return mod.require;
582                } else {
583                    return (mod.require = context.makeRequire(mod.map));
584                }
585            },
586            'exports': function (mod) {
587                mod.usingExports = true;
588                if (mod.map.isDefine) {
589                    if (mod.exports) {
590                        return (defined[mod.map.id] = mod.exports);
591                    } else {
592                        return (mod.exports = defined[mod.map.id] = {});
593                    }
594                }
595            },
596            'module': function (mod) {
597                if (mod.module) {
598                    return mod.module;
599                } else {
600                    return (mod.module = {
601                        id: mod.map.id,
602                        uri: mod.map.url,
603                        config: function () {
604                            return getOwn(config.config, mod.map.id) || {};
605                        },
606                        exports: mod.exports || (mod.exports = {})
607                    });
608                }
609            }
610        };
611
612        function cleanRegistry(id) {
613            //Clean up machinery used for waiting modules.
614            delete registry[id];
615            delete enabledRegistry[id];
616        }
617
618        function breakCycle(mod, traced, processed) {
619            var id = mod.map.id;
620
621            if (mod.error) {
622                mod.emit('error', mod.error);
623            } else {
624                traced[id] = true;
625                each(mod.depMaps, function (depMap, i) {
626                    var depId = depMap.id,
627                        dep = getOwn(registry, depId);
628
629                    //Only force things that have not completed
630                    //being defined, so still in the registry,
631                    //and only if it has not been matched up
632                    //in the module already.
633                    if (dep && !mod.depMatched[i] && !processed[depId]) {
634                        if (getOwn(traced, depId)) {
635                            mod.defineDep(i, defined[depId]);
636                            mod.check(); //pass false?
637                        } else {
638                            breakCycle(dep, traced, processed);
639                        }
640                    }
641                });
642                processed[id] = true;
643            }
644        }
645
646        function checkLoaded() {
647            var err, usingPathFallback,
648                waitInterval = config.waitSeconds * 1000,
649                //It is possible to disable the wait interval by using waitSeconds of 0.
650                expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
651                noLoads = [],
652                reqCalls = [],
653                stillLoading = false,
654                needCycleCheck = true;
655
656            //Do not bother if this call was a result of a cycle break.
657            if (inCheckLoaded) {
658                return;
659            }
660
661            inCheckLoaded = true;
662
663            //Figure out the state of all the modules.
664            eachProp(enabledRegistry, function (mod) {
665                var map = mod.map,
666                    modId = map.id;
667
668                //Skip things that are not enabled or in error state.
669                if (!mod.enabled) {
670                    return;
671                }
672
673                if (!map.isDefine) {
674                    reqCalls.push(mod);
675                }
676
677                if (!mod.error) {
678                    //If the module should be executed, and it has not
679                    //been inited and time is up, remember it.
680                    if (!mod.inited && expired) {
681                        if (hasPathFallback(modId)) {
682                            usingPathFallback = true;
683                            stillLoading = true;
684                        } else {
685                            noLoads.push(modId);
686                            removeScript(modId);
687                        }
688                    } else if (!mod.inited && mod.fetched && map.isDefine) {
689                        stillLoading = true;
690                        if (!map.prefix) {
691                            //No reason to keep looking for unfinished
692                            //loading. If the only stillLoading is a
693                            //plugin resource though, keep going,
694                            //because it may be that a plugin resource
695                            //is waiting on a non-plugin cycle.
696                            return (needCycleCheck = false);
697                        }
698                    }
699                }
700            });
701
702            if (expired && noLoads.length) {
703                //If wait time expired, throw error of unloaded modules.
704                err = makeError('timeout', 'Load timeout for modules: ' + noLoads, null, noLoads);
705                err.contextName = context.contextName;
706                return onError(err);
707            }
708
709            //Not expired, check for a cycle.
710            if (needCycleCheck) {
711                each(reqCalls, function (mod) {
712                    breakCycle(mod, {}, {});
713                });
714            }
715
716            //If still waiting on loads, and the waiting load is something
717            //other than a plugin resource, or there are still outstanding
718            //scripts, then just try back later.
719            if ((!expired || usingPathFallback) && stillLoading) {
720                //Something is still waiting to load. Wait for it, but only
721                //if a timeout is not already in effect.
722                if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
723                    checkLoadedTimeoutId = setTimeout(function () {
724                        checkLoadedTimeoutId = 0;
725                        checkLoaded();
726                    }, 50);
727                }
728            }
729
730            inCheckLoaded = false;
731        }
732
733        Module = function (map) {
734            this.events = getOwn(undefEvents, map.id) || {};
735            this.map = map;
736            this.shim = getOwn(config.shim, map.id);
737            this.depExports = [];
738            this.depMaps = [];
739            this.depMatched = [];
740            this.pluginMaps = {};
741            this.depCount = 0;
742
743            /* this.exports this.factory
744               this.depMaps = [],
745               this.enabled, this.fetched
746            */
747        };
748
749        Module.prototype = {
750            init: function (depMaps, factory, errback, options) {
751                options = options || {};
752
753                //Do not do more inits if already done. Can happen if there
754                //are multiple define calls for the same module. That is not
755                //a normal, common case, but it is also not unexpected.
756                if (this.inited) {
757                    return;
758                }
759
760                this.factory = factory;
761
762                if (errback) {
763                    //Register for errors on this module.
764                    this.on('error', errback);
765                } else if (this.events.error) {
766                    //If no errback already, but there are error listeners
767                    //on this module, set up an errback to pass to the deps.
768                    errback = bind(this, function (err) {
769                        this.emit('error', err);
770                    });
771                }
772
773                //Do a copy of the dependency array, so that
774                //source inputs are not modified. For example
775                //"shim" deps are passed in here directly, and
776                //doing a direct modification of the depMaps array
777                //would affect that config.
778                this.depMaps = depMaps && depMaps.slice(0);
779
780                this.errback = errback;
781
782                //Indicate this module has be initialized
783                this.inited = true;
784
785                this.ignore = options.ignore;
786
787                //Could have option to init this module in enabled mode,
788                //or could have been previously marked as enabled. However,
789                //the dependencies are not known until init is called. So
790                //if enabled previously, now trigger dependencies as enabled.
791                if (options.enabled || this.enabled) {
792                    //Enable this module and dependencies.
793                    //Will call this.check()
794                    this.enable();
795                } else {
796                    this.check();
797                }
798            },
799
800            defineDep: function (i, depExports) {
801                //Because of cycles, defined callback for a given
802                //export can be called more than once.
803                if (!this.depMatched[i]) {
804                    this.depMatched[i] = true;
805                    this.depCount -= 1;
806                    this.depExports[i] = depExports;
807                }
808            },
809
810            fetch: function () {
811                if (this.fetched) {
812                    return;
813                }
814                this.fetched = true;
815
816                context.startTime = (new Date()).getTime();
817
818                var map = this.map;
819
820                //If the manager is for a plugin managed resource,
821                //ask the plugin to load it now.
822                if (this.shim) {
823                    context.makeRequire(this.map, {
824                        enableBuildCallback: true
825                    })(this.shim.deps || [], bind(this, function () {
826                        return map.prefix ? this.callPlugin() : this.load();
827                    }));
828                } else {
829                    //Regular dependency.
830                    return map.prefix ? this.callPlugin() : this.load();
831                }
832            },
833
834            load: function () {
835                var url = this.map.url;
836
837                //Regular dependency.
838                if (!urlFetched[url]) {
839                    urlFetched[url] = true;
840                    context.load(this.map.id, url);
841                }
842            },
843
844            /**
845             * Checks if the module is ready to define itself, and if so,
846             * define it.
847             */
848            check: function () {
849                if (!this.enabled || this.enabling) {
850                    return;
851                }
852
853                var err, cjsModule,
854                    id = this.map.id,
855                    depExports = this.depExports,
856                    exports = this.exports,
857                    factory = this.factory;
858
859                if (!this.inited) {
860                    // Only fetch if not already in the defQueue.
861                    if (!hasProp(context.defQueueMap, id)) {
862                        this.fetch();
863                    }
864                } else if (this.error) {
865                    this.emit('error', this.error);
866                } else if (!this.defining) {
867                    //The factory could trigger another require call
868                    //that would result in checking this module to
869                    //define itself again. If already in the process
870                    //of doing that, skip this work.
871                    this.defining = true;
872
873                    if (this.depCount < 1 && !this.defined) {
874                        if (isFunction(factory)) {
875                            //If there is an error listener, favor passing
876                            //to that instead of throwing an error. However,
877                            //only do it for define()'d  modules. require
878                            //errbacks should not be called for failures in
879                            //their callbacks (#699). However if a global
880                            //onError is set, use that.
881                            if ((this.events.error && this.map.isDefine) ||
882                                req.onError !== defaultOnError) {
883                                try {
884                                    exports = context.execCb(id, factory, depExports, exports);
885                                } catch (e) {
886                                    err = e;
887                                }
888                            } else {
889                                exports = context.execCb(id, factory, depExports, exports);
890                            }
891
892                            // Favor return value over exports. If node/cjs in play,
893                            // then will not have a return value anyway. Favor
894                            // module.exports assignment over exports object.
895                            if (this.map.isDefine && exports === undefined) {
896                                cjsModule = this.module;
897                                if (cjsModule) {
898                                    exports = cjsModule.exports;
899                                } else if (this.usingExports) {
900                                    //exports already set the defined value.
901                                    exports = this.exports;
902                                }
903                            }
904
905                            if (err) {
906                                err.requireMap = this.map;
907                                err.requireModules = this.map.isDefine ? [this.map.id] : null;
908                                err.requireType = this.map.isDefine ? 'define' : 'require';
909                                return onError((this.error = err));
910                            }
911
912                        } else {
913                            //Just a literal value
914                            exports = factory;
915                        }
916
917                        this.exports = exports;
918
919                        if (this.map.isDefine && !this.ignore) {
920                            defined[id] = exports;
921
922                            if (req.onResourceLoad) {
923                                var resLoadMaps = [];
924                                each(this.depMaps, function (depMap) {
925                                    resLoadMaps.push(depMap.normalizedMap || depMap);
926                                });
927                                req.onResourceLoad(context, this.map, resLoadMaps);
928                            }
929                        }
930
931                        //Clean up
932                        cleanRegistry(id);
933
934                        this.defined = true;
935                    }
936
937                    //Finished the define stage. Allow calling check again
938                    //to allow define notifications below in the case of a
939                    //cycle.
940                    this.defining = false;
941
942                    if (this.defined && !this.defineEmitted) {
943                        this.defineEmitted = true;
944                        this.emit('defined', this.exports);
945                        this.defineEmitComplete = true;
946                    }
947
948                }
949            },
950
951            callPlugin: function () {
952                var map = this.map,
953                    id = map.id,
954                    //Map already normalized the prefix.
955                    pluginMap = makeModuleMap(map.prefix);
956
957                //Mark this as a dependency for this plugin, so it
958                //can be traced for cycles.
959                this.depMaps.push(pluginMap);
960
961                on(pluginMap, 'defined', bind(this, function (plugin) {
962                    var load, normalizedMap, normalizedMod,
963                        bundleId = getOwn(bundlesMap, this.map.id),
964                        name = this.map.name,
965                        parentName = this.map.parentMap ? this.map.parentMap.name : null,
966                        localRequire = context.makeRequire(map.parentMap, {
967                            enableBuildCallback: true
968                        });
969
970                    //If current map is not normalized, wait for that
971                    //normalized name to load instead of continuing.
972                    if (this.map.unnormalized) {
973                        //Normalize the ID if the plugin allows it.
974                        if (plugin.normalize) {
975                            name = plugin.normalize(name, function (name) {
976                                return normalize(name, parentName, true);
977                            }) || '';
978                        }
979
980                        //prefix and name should already be normalized, no need
981                        //for applying map config again either.
982                        normalizedMap = makeModuleMap(map.prefix + '!' + name,
983                                                      this.map.parentMap,
984                                                      true);
985                        on(normalizedMap,
986                            'defined', bind(this, function (value) {
987                                this.map.normalizedMap = normalizedMap;
988                                this.init([], function () { return value; }, null, {
989                                    enabled: true,
990                                    ignore: true
991                                });
992                            }));
993
994                        normalizedMod = getOwn(registry, normalizedMap.id);
995                        if (normalizedMod) {
996                            //Mark this as a dependency for this plugin, so it
997                            //can be traced for cycles.
998                            this.depMaps.push(normalizedMap);
999
1000                            if (this.events.error) {
1001                                normalizedMod.on('error', bind(this, function (err) {
1002                                    this.emit('error', err);
1003                                }));
1004                            }
1005                            normalizedMod.enable();
1006                        }
1007
1008                        return;
1009                    }
1010
1011                    //If a paths config, then just load that file instead to
1012                    //resolve the plugin, as it is built into that paths layer.
1013                    if (bundleId) {
1014                        this.map.url = context.nameToUrl(bundleId);
1015                        this.load();
1016                        return;
1017                    }
1018
1019                    load = bind(this, function (value) {
1020                        this.init([], function () { return value; }, null, {
1021                            enabled: true
1022                        });
1023                    });
1024
1025                    load.error = bind(this, function (err) {
1026                        this.inited = true;
1027                        this.error = err;
1028                        err.requireModules = [id];
1029
1030                        //Remove temp unnormalized modules for this module,
1031                        //since they will never be resolved otherwise now.
1032                        eachProp(registry, function (mod) {
1033                            if (mod.map.id.indexOf(id + '_unnormalized') === 0) {
1034                                cleanRegistry(mod.map.id);
1035                            }
1036                        });
1037
1038                        onError(err);
1039                    });
1040
1041                    //Allow plugins to load other code without having to know the
1042                    //context or how to 'complete' the load.
1043                    load.fromText = bind(this, function (text, textAlt) {
1044                        /*jslint evil: true */
1045                        var moduleName = map.name,
1046                            moduleMap = makeModuleMap(moduleName),
1047                            hasInteractive = useInteractive;
1048
1049                        //As of 2.1.0, support just passing the text, to reinforce
1050                        //fromText only being called once per resource. Still
1051                        //support old style of passing moduleName but discard
1052                        //that moduleName in favor of the internal ref.
1053                        if (textAlt) {
1054                            text = textAlt;
1055                        }
1056
1057                        //Turn off interactive script matching for IE for any define
1058                        //calls in the text, then turn it back on at the end.
1059                        if (hasInteractive) {
1060                            useInteractive = false;
1061                        }
1062
1063                        //Prime the system by creating a module instance for
1064                        //it.
1065                        getModule(moduleMap);
1066
1067                        //Transfer any config to this other module.
1068                        if (hasProp(config.config, id)) {
1069                            config.config[moduleName] = config.config[id];
1070                        }
1071
1072                        try {
1073                            req.exec(text);
1074                        } catch (e) {
1075                            return onError(makeError('fromtexteval',
1076                                             'fromText eval for ' + id +
1077                                            ' failed: ' + e,
1078                                             e,
1079                                             [id]));
1080                        }
1081
1082                        if (hasInteractive) {
1083                            useInteractive = true;
1084                        }
1085
1086                        //Mark this as a dependency for the plugin
1087                        //resource
1088                        this.depMaps.push(moduleMap);
1089
1090                        //Support anonymous modules.
1091                        context.completeLoad(moduleName);
1092
1093                        //Bind the value of that module to the value for this
1094                        //resource ID.
1095                        localRequire([moduleName], load);
1096                    });
1097
1098                    //Use parentName here since the plugin's name is not reliable,
1099                    //could be some weird string with no path that actually wants to
1100                    //reference the parentName's path.
1101                    plugin.load(map.name, localRequire, load, config);
1102                }));
1103
1104                context.enable(pluginMap, this);
1105                this.pluginMaps[pluginMap.id] = pluginMap;
1106            },
1107
1108            enable: function () {
1109                enabledRegistry[this.map.id] = this;
1110                this.enabled = true;
1111
1112                //Set flag mentioning that the module is enabling,
1113                //so that immediate calls to the defined callbacks
1114                //for dependencies do not trigger inadvertent load
1115                //with the depCount still being zero.
1116                this.enabling = true;
1117
1118                //Enable each dependency
1119                each(this.depMaps, bind(this, function (depMap, i) {
1120                    var id, mod, handler;
1121
1122                    if (typeof depMap === 'string') {
1123                        //Dependency needs to be converted to a depMap
1124                        //and wired up to this module.
1125                        depMap = makeModuleMap(depMap,
1126                                               (this.map.isDefine ? this.map : this.map.parentMap),
1127                                               false,
1128                                               !this.skipMap);
1129                        this.depMaps[i] = depMap;
1130
1131                        handler = getOwn(handlers, depMap.id);
1132
1133                        if (handler) {
1134                            this.depExports[i] = handler(this);
1135                            return;
1136                        }
1137
1138                        this.depCount += 1;
1139
1140                        on(depMap, 'defined', bind(this, function (depExports) {
1141                            if (this.undefed) {
1142                                return;
1143                            }
1144                            this.defineDep(i, depExports);
1145                            this.check();
1146                        }));
1147
1148                        if (this.errback) {
1149                            on(depMap, 'error', bind(this, this.errback));
1150                        } else if (this.events.error) {
1151                            // No direct errback on this module, but something
1152                            // else is listening for errors, so be sure to
1153                            // propagate the error correctly.
1154                            on(depMap, 'error', bind(this, function(err) {
1155                                this.emit('error', err);
1156                            }));
1157                        }
1158                    }
1159
1160                    id = depMap.id;
1161                    mod = registry[id];
1162
1163                    //Skip special modules like 'require', 'exports', 'module'
1164                    //Also, don't call enable if it is already enabled,
1165                    //important in circular dependency cases.
1166                    if (!hasProp(handlers, id) && mod && !mod.enabled) {
1167                        context.enable(depMap, this);
1168                    }
1169                }));
1170
1171                //Enable each plugin that is used in
1172                //a dependency
1173                eachProp(this.pluginMaps, bind(this, function (pluginMap) {
1174                    var mod = getOwn(registry, pluginMap.id);
1175                    if (mod && !mod.enabled) {
1176                        context.enable(pluginMap, this);
1177                    }
1178                }));
1179
1180                this.enabling = false;
1181
1182                this.check();
1183            },
1184
1185            on: function (name, cb) {
1186                var cbs = this.events[name];
1187                if (!cbs) {
1188                    cbs = this.events[name] = [];
1189                }
1190                cbs.push(cb);
1191            },
1192
1193            emit: function (name, evt) {
1194                each(this.events[name], function (cb) {
1195                    cb(evt);
1196                });
1197                if (name === 'error') {
1198                    //Now that the error handler was triggered, remove
1199                    //the listeners, since this broken Module instance
1200                    //can stay around for a while in the registry.
1201                    delete this.events[name];
1202                }
1203            }
1204        };
1205
1206        function callGetModule(args) {
1207            //Skip modules already defined.
1208            if (!hasProp(defined, args[0])) {
1209                getModule(makeModuleMap(args[0], null, true)).init(args[1], args[2]);
1210            }
1211        }
1212
1213        function removeListener(node, func, name, ieName) {
1214            //Favor detachEvent because of IE9
1215            //issue, see attachEvent/addEventListener comment elsewhere
1216            //in this file.
1217            if (node.detachEvent && !isOpera) {
1218                //Probably IE. If not it will throw an error, which will be
1219                //useful to know.
1220                if (ieName) {
1221                    node.detachEvent(ieName, func);
1222                }
1223            } else {
1224                node.removeEventListener(name, func, false);
1225            }
1226        }
1227
1228        /**
1229         * Given an event from a script node, get the requirejs info from it,
1230         * and then removes the event listeners on the node.
1231         * @param {Event} evt
1232         * @returns {Object}
1233         */
1234        function getScriptData(evt) {
1235            //Using currentTarget instead of target for Firefox 2.0's sake. Not
1236            //all old browsers will be supported, but this one was easy enough
1237            //to support and still makes sense.
1238            var node = evt.currentTarget || evt.srcElement;
1239
1240            //Remove the listeners once here.
1241            removeListener(node, context.onScriptLoad, 'load', 'onreadystatechange');
1242            removeListener(node, context.onScriptError, 'error');
1243
1244            return {
1245                node: node,
1246                id: node && node.getAttribute('data-requiremodule')
1247            };
1248        }
1249
1250        function intakeDefines() {
1251            var args;
1252
1253            //Any defined modules in the global queue, intake them now.
1254            takeGlobalQueue();
1255
1256            //Make sure any remaining defQueue items get properly processed.
1257            while (defQueue.length) {
1258                args = defQueue.shift();
1259                if (args[0] === null) {
1260                    return onError(makeError('mismatch', 'Mismatched anonymous define() module: ' +
1261                        args[args.length - 1]));
1262                } else {
1263                    //args are id, deps, factory. Should be normalized by the
1264                    //define() function.
1265                    callGetModule(args);
1266                }
1267            }
1268            context.defQueueMap = {};
1269        }
1270
1271        context = {
1272            config: config,
1273            contextName: contextName,
1274            registry: registry,
1275            defined: defined,
1276            urlFetched: urlFetched,
1277            defQueue: defQueue,
1278            defQueueMap: {},
1279            Module: Module,
1280            makeModuleMap: makeModuleMap,
1281            nextTick: req.nextTick,
1282            onError: onError,
1283
1284            /**
1285             * Set a configuration for the context.
1286             * @param {Object} cfg config object to integrate.
1287             */
1288            configure: function (cfg) {
1289                //Make sure the baseUrl ends in a slash.
1290                if (cfg.baseUrl) {
1291                    if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== '/') {
1292                        cfg.baseUrl += '/';
1293                    }
1294                }
1295
1296                // Convert old style urlArgs string to a function.
1297                if (typeof cfg.urlArgs === 'string') {
1298                    var urlArgs = cfg.urlArgs;
1299                    cfg.urlArgs = function(id, url) {
1300                        return (url.indexOf('?') === -1 ? '?' : '&') + urlArgs;
1301                    };
1302                }
1303
1304                //Save off the paths since they require special processing,
1305                //they are additive.
1306                var shim = config.shim,
1307                    objs = {
1308                        paths: true,
1309                        bundles: true,
1310                        config: true,
1311                        map: true
1312                    };
1313
1314                eachProp(cfg, function (value, prop) {
1315                    if (objs[prop]) {
1316                        if (!config[prop]) {
1317                            config[prop] = {};
1318                        }
1319                        mixin(config[prop], value, true, true);
1320                    } else {
1321                        config[prop] = value;
1322                    }
1323                });
1324
1325                //Reverse map the bundles
1326                if (cfg.bundles) {
1327                    eachProp(cfg.bundles, function (value, prop) {
1328                        each(value, function (v) {
1329                            if (v !== prop) {
1330                                bundlesMap[v] = prop;
1331                            }
1332                        });
1333                    });
1334                }
1335
1336                //Merge shim
1337                if (cfg.shim) {
1338                    eachProp(cfg.shim, function (value, id) {
1339                        //Normalize the structure
1340                        if (isArray(value)) {
1341                            value = {
1342                                deps: value
1343                            };
1344                        }
1345                        if ((value.exports || value.init) && !value.exportsFn) {
1346                            value.exportsFn = context.makeShimExports(value);
1347                        }
1348                        shim[id] = value;
1349                    });
1350                    config.shim = shim;
1351                }
1352
1353                //Adjust packages if necessary.
1354                if (cfg.packages) {
1355                    each(cfg.packages, function (pkgObj) {
1356                        var location, name;
1357
1358                        pkgObj = typeof pkgObj === 'string' ? {name: pkgObj} : pkgObj;
1359
1360                        name = pkgObj.name;
1361                        location = pkgObj.location;
1362                        if (location) {
1363                            config.paths[name] = pkgObj.location;
1364                        }
1365
1366                        //Save pointer to main module ID for pkg name.
1367                        //Remove leading dot in main, so main paths are normalized,
1368                        //and remove any trailing .js, since different package
1369                        //envs have different conventions: some use a module name,
1370                        //some use a file name.
1371                        config.pkgs[name] = pkgObj.name + '/' + (pkgObj.main || 'main')
1372                                     .replace(currDirRegExp, '')
1373                                     .replace(jsSuffixRegExp, '');
1374                    });
1375                }
1376
1377                //If there are any "waiting to execute" modules in the registry,
1378                //update the maps for them, since their info, like URLs to load,
1379                //may have changed.
1380                eachProp(registry, function (mod, id) {
1381                    //If module already has init called, since it is too
1382                    //late to modify them, and ignore unnormalized ones
1383                    //since they are transient.
1384                    if (!mod.inited && !mod.map.unnormalized) {
1385                        mod.map = makeModuleMap(id, null, true);
1386                    }
1387                });
1388
1389                //If a deps array or a config callback is specified, then call
1390                //require with those args. This is useful when require is defined as a
1391                //config object before require.js is loaded.
1392                if (cfg.deps || cfg.callback) {
1393                    context.require(cfg.deps || [], cfg.callback);
1394                }
1395            },
1396
1397            makeShimExports: function (value) {
1398                function fn() {
1399                    var ret;
1400                    if (value.init) {
1401                        ret = value.init.apply(global, arguments);
1402                    }
1403                    return ret || (value.exports && getGlobal(value.exports));
1404                }
1405                return fn;
1406            },
1407
1408            makeRequire: function (relMap, options) {
1409                options = options || {};
1410
1411                function localRequire(deps, callback, errback) {
1412                    var id, map, requireMod;
1413
1414                    if (options.enableBuildCallback && callback && isFunction(callback)) {
1415                        callback.__requireJsBuild = true;
1416                    }
1417
1418                    if (typeof deps === 'string') {
1419                        if (isFunction(callback)) {
1420                            //Invalid call
1421                            return onError(makeError('requireargs', 'Invalid require call'), errback);
1422                        }
1423
1424                        //If require|exports|module are requested, get the
1425                        //value for them from the special handlers. Caveat:
1426                        //this only works while module is being defined.
1427                        if (relMap && hasProp(handlers, deps)) {
1428                            return handlers[deps](registry[relMap.id]);
1429                        }
1430
1431                        //Synchronous access to one module. If require.get is
1432                        //available (as in the Node adapter), prefer that.
1433                        if (req.get) {
1434                            return req.get(context, deps, relMap, localRequire);
1435                        }
1436
1437                        //Normalize module name, if it contains . or ..
1438                        map = makeModuleMap(deps, relMap, false, true);
1439                        id = map.id;
1440
1441                        if (!hasProp(defined, id)) {
1442                            return onError(makeError('notloaded', 'Module name "' +
1443                                        id +
1444                                        '" has not been loaded yet for context: ' +
1445                                        contextName +
1446                                        (relMap ? '' : '. Use require([])')));
1447                        }
1448                        return defined[id];
1449                    }
1450
1451                    //Grab defines waiting in the global queue.
1452                    intakeDefines();
1453
1454                    //Mark all the dependencies as needing to be loaded.
1455                    context.nextTick(function () {
1456                        //Some defines could have been added since the
1457                        //require call, collect them.
1458                        intakeDefines();
1459
1460                        requireMod = getModule(makeModuleMap(null, relMap));
1461
1462                        //Store if map config should be applied to this require
1463                        //call for dependencies.
1464                        requireMod.skipMap = options.skipMap;
1465
1466                        requireMod.init(deps, callback, errback, {
1467                            enabled: true
1468                        });
1469
1470                        checkLoaded();
1471                    });
1472
1473                    return localRequire;
1474                }
1475
1476                mixin(localRequire, {
1477                    isBrowser: isBrowser,
1478
1479                    /**
1480                     * Converts a module name + .extension into an URL path.
1481                     * *Requires* the use of a module name. It does not support using
1482                     * plain URLs like nameToUrl.
1483                     */
1484                    toUrl: function (moduleNamePlusExt) {
1485                        var ext,
1486                            index = moduleNamePlusExt.lastIndexOf('.'),
1487                            segment = moduleNamePlusExt.split('/')[0],
1488                            isRelative = segment === '.' || segment === '..';
1489
1490                        //Have a file extension alias, and it is not the
1491                        //dots from a relative path.
1492                        if (index !== -1 && (!isRelative || index > 1)) {
1493                            ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
1494                            moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
1495                        }
1496
1497                        return context.nameToUrl(normalize(moduleNamePlusExt,
1498                                                relMap && relMap.id, true), ext,  true);
1499                    },
1500
1501                    defined: function (id) {
1502                        return hasProp(defined, makeModuleMap(id, relMap, false, true).id);
1503                    },
1504
1505                    specified: function (id) {
1506                        id = makeModuleMap(id, relMap, false, true).id;
1507                        return hasProp(defined, id) || hasProp(registry, id);
1508                    }
1509                });
1510
1511                //Only allow undef on top level require calls
1512                if (!relMap) {
1513                    localRequire.undef = function (id) {
1514                        //Bind any waiting define() calls to this context,
1515                        //fix for #408
1516                        takeGlobalQueue();
1517
1518                        var map = makeModuleMap(id, relMap, true),
1519                            mod = getOwn(registry, id);
1520
1521                        mod.undefed = true;
1522                        removeScript(id);
1523
1524                        delete defined[id];
1525                        delete urlFetched[map.url];
1526                        delete undefEvents[id];
1527
1528                        //Clean queued defines too. Go backwards
1529                        //in array so that the splices do not
1530                        //mess up the iteration.
1531                        eachReverse(defQueue, function(args, i) {
1532                            if (args[0] === id) {
1533                                defQueue.splice(i, 1);
1534                            }
1535                        });
1536                        delete context.defQueueMap[id];
1537
1538                        if (mod) {
1539                            //Hold on to listeners in case the
1540                            //module will be attempted to be reloaded
1541                            //using a different config.
1542                            if (mod.events.defined) {
1543                                undefEvents[id] = mod.events;
1544                            }
1545
1546                            cleanRegistry(id);
1547                        }
1548                    };
1549                }
1550
1551                return localRequire;
1552            },
1553
1554            /**
1555             * Called to enable a module if it is still in the registry
1556             * awaiting enablement. A second arg, parent, the parent module,
1557             * is passed in for context, when this method is overridden by
1558             * the optimizer. Not shown here to keep code compact.
1559             */
1560            enable: function (depMap) {
1561                var mod = getOwn(registry, depMap.id);
1562                if (mod) {
1563                    getModule(depMap).enable();
1564                }
1565            },
1566
1567            /**
1568             * Internal method used by environment adapters to complete a load event.
1569             * A load event could be a script load or just a load pass from a synchronous
1570             * load call.
1571             * @param {String} moduleName the name of the module to potentially complete.
1572             */
1573            completeLoad: function (moduleName) {
1574                var found, args, mod,
1575                    shim = getOwn(config.shim, moduleName) || {},
1576                    shExports = shim.exports;
1577
1578                takeGlobalQueue();
1579
1580                while (defQueue.length) {
1581                    args = defQueue.shift();
1582                    if (args[0] === null) {
1583                        args[0] = moduleName;
1584                        //If already found an anonymous module and bound it
1585                        //to this name, then this is some other anon module
1586                        //waiting for its completeLoad to fire.
1587                        if (found) {
1588                            break;
1589                        }
1590                        found = true;
1591                    } else if (args[0] === moduleName) {
1592                        //Found matching define call for this script!
1593                        found = true;
1594                    }
1595
1596                    callGetModule(args);
1597                }
1598                context.defQueueMap = {};
1599
1600                //Do this after the cycle of callGetModule in case the result
1601                //of those calls/init calls changes the registry.
1602                mod = getOwn(registry, moduleName);
1603
1604                if (!found && !hasProp(defined, moduleName) && mod && !mod.inited) {
1605                    if (config.enforceDefine && (!shExports || !getGlobal(shExports))) {
1606                        if (hasPathFallback(moduleName)) {
1607                            return;
1608                        } else {
1609                            return onError(makeError('nodefine',
1610                                             'No define call for ' + moduleName,
1611                                             null,
1612                                             [moduleName]));
1613                        }
1614                    } else {
1615                        //A script that does not call define(), so just simulate
1616                        //the call for it.
1617                        callGetModule([moduleName, (shim.deps || []), shim.exportsFn]);
1618                    }
1619                }
1620
1621                checkLoaded();
1622            },
1623
1624            /**
1625             * Converts a module name to a file path. Supports cases where
1626             * moduleName may actually be just an URL.
1627             * Note that it **does not** call normalize on the moduleName,
1628             * it is assumed to have already been normalized. This is an
1629             * internal API, not a public one. Use toUrl for the public API.
1630             */
1631            nameToUrl: function (moduleName, ext, skipExt) {
1632                var paths, syms, i, parentModule, url,
1633                    parentPath, bundleId,
1634                    pkgMain = getOwn(config.pkgs, moduleName);
1635
1636                if (pkgMain) {
1637                    moduleName = pkgMain;
1638                }
1639
1640                bundleId = getOwn(bundlesMap, moduleName);
1641
1642                if (bundleId) {
1643                    return context.nameToUrl(bundleId, ext, skipExt);
1644                }
1645
1646                //If a colon is in the URL, it indicates a protocol is used and it is just
1647                //an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?)
1648                //or ends with .js, then assume the user meant to use an url and not a module id.
1649                //The slash is important for protocol-less URLs as well as full paths.
1650                if (req.jsExtRegExp.test(moduleName)) {
1651                    //Just a plain path, not module name lookup, so just return it.
1652                    //Add extension if it is included. This is a bit wonky, only non-.js things pass
1653                    //an extension, this method probably needs to be reworked.
1654                    url = moduleName + (ext || '');
1655                } else {
1656                    //A module that needs to be converted to a path.
1657                    paths = config.paths;
1658
1659                    syms = moduleName.split('/');
1660                    //For each module name segment, see if there is a path
1661                    //registered for it. Start with most specific name
1662                    //and work up from it.
1663                    for (i = syms.length; i > 0; i -= 1) {
1664                        parentModule = syms.slice(0, i).join('/');
1665
1666                        parentPath = getOwn(paths, parentModule);
1667                        if (parentPath) {
1668                            //If an array, it means there are a few choices,
1669                            //Choose the one that is desired
1670                            if (isArray(parentPath)) {
1671                                parentPath = parentPath[0];
1672                            }
1673                            syms.splice(0, i, parentPath);
1674                            break;
1675                        }
1676                    }
1677
1678                    //Join the path parts together, then figure out if baseUrl is needed.
1679                    url = syms.join('/');
1680                    url += (ext || (/^data\:|^blob\:|\?/.test(url) || skipExt ? '' : '.js'));
1681                    url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url;
1682                }
1683
1684                return config.urlArgs && !/^blob\:/.test(url) ?
1685                       url + config.urlArgs(moduleName, url) : url;
1686            },
1687
1688            //Delegates to req.load. Broken out as a separate function to
1689            //allow overriding in the optimizer.
1690            load: function (id, url) {
1691                req.load(context, id, url);
1692            },
1693
1694            /**
1695             * Executes a module callback function. Broken out as a separate function
1696             * solely to allow the build system to sequence the files in the built
1697             * layer in the right sequence.
1698             *
1699             * @private
1700             */
1701            execCb: function (name, callback, args, exports) {
1702                return callback.apply(exports, args);
1703            },
1704
1705            /**
1706             * callback for script loads, used to check status of loading.
1707             *
1708             * @param {Event} evt the event from the browser for the script
1709             * that was loaded.
1710             */
1711            onScriptLoad: function (evt) {
1712                //Using currentTarget instead of target for Firefox 2.0's sake. Not
1713                //all old browsers will be supported, but this one was easy enough
1714                //to support and still makes sense.
1715                if (evt.type === 'load' ||
1716                        (readyRegExp.test((evt.currentTarget || evt.srcElement).readyState))) {
1717                    //Reset interactive script so a script node is not held onto for
1718                    //to long.
1719                    interactiveScript = null;
1720
1721                    //Pull out the name of the module and the context.
1722                    var data = getScriptData(evt);
1723                    context.completeLoad(data.id);
1724                }
1725            },
1726
1727            /**
1728             * Callback for script errors.
1729             */
1730            onScriptError: function (evt) {
1731                var data = getScriptData(evt);
1732                if (!hasPathFallback(data.id)) {
1733                    var parents = [];
1734                    eachProp(registry, function(value, key) {
1735                        if (key.indexOf('_@r') !== 0) {
1736                            each(value.depMaps, function(depMap) {
1737                                if (depMap.id === data.id) {
1738                                    parents.push(key);
1739                                    return true;
1740                                }
1741                            });
1742                        }
1743                    });
1744                    return onError(makeError('scripterror', 'Script error for "' + data.id +
1745                                             (parents.length ?
1746                                             '", needed by: ' + parents.join(', ') :
1747                                             '"'), evt, [data.id]));
1748                }
1749            }
1750        };
1751
1752        context.require = context.makeRequire();
1753        return context;
1754    }
1755
1756    /**
1757     * Main entry point.
1758     *
1759     * If the only argument to require is a string, then the module that
1760     * is represented by that string is fetched for the appropriate context.
1761     *
1762     * If the first argument is an array, then it will be treated as an array
1763     * of dependency string names to fetch. An optional function callback can
1764     * be specified to execute when all of those dependencies are available.
1765     *
1766     * Make a local req variable to help Caja compliance (it assumes things
1767     * on a require that are not standardized), and to give a short
1768     * name for minification/local scope use.
1769     */
1770    req = requirejs = function (deps, callback, errback, optional) {
1771
1772        //Find the right context, use default
1773        var context, config,
1774            contextName = defContextName;
1775
1776        // Determine if have config object in the call.
1777        if (!isArray(deps) && typeof deps !== 'string') {
1778            // deps is a config object
1779            config = deps;
1780            if (isArray(callback)) {
1781                // Adjust args if there are dependencies
1782                deps = callback;
1783                callback = errback;
1784                errback = optional;
1785            } else {
1786                deps = [];
1787            }
1788        }
1789
1790        if (config && config.context) {
1791            contextName = config.context;
1792        }
1793
1794        context = getOwn(contexts, contextName);
1795        if (!context) {
1796            context = contexts[contextName] = req.s.newContext(contextName);
1797        }
1798
1799        if (config) {
1800            context.configure(config);
1801        }
1802
1803        return context.require(deps, callback, errback);
1804    };
1805
1806    /**
1807     * Support require.config() to make it easier to cooperate with other
1808     * AMD loaders on globally agreed names.
1809     */
1810    req.config = function (config) {
1811        return req(config);
1812    };
1813
1814    /**
1815     * Execute something after the current tick
1816     * of the event loop. Override for other envs
1817     * that have a better solution than setTimeout.
1818     * @param  {Function} fn function to execute later.
1819     */
1820    req.nextTick = typeof setTimeout !== 'undefined' ? function (fn) {
1821        setTimeout(fn, 4);
1822    } : function (fn) { fn(); };
1823
1824    /**
1825     * Export require as a global, but only if it does not already exist.
1826     */
1827    if (!require) {
1828        require = req;
1829    }
1830
1831    req.version = version;
1832
1833    //Used to filter out dependencies that are already paths.
1834    req.jsExtRegExp = /^\/|:|\?|\.js$/;
1835    req.isBrowser = isBrowser;
1836    s = req.s = {
1837        contexts: contexts,
1838        newContext: newContext
1839    };
1840
1841    //Create default context.
1842    req({});
1843
1844    //Exports some context-sensitive methods on global require.
1845    each([
1846        'toUrl',
1847        'undef',
1848        'defined',
1849        'specified'
1850    ], function (prop) {
1851        //Reference from contexts instead of early binding to default context,
1852        //so that during builds, the latest instance of the default context
1853        //with its config gets used.
1854        req[prop] = function () {
1855            var ctx = contexts[defContextName];
1856            return ctx.require[prop].apply(ctx, arguments);
1857        };
1858    });
1859
1860    if (isBrowser) {
1861        head = s.head = document.getElementsByTagName('head')[0];
1862        //If BASE tag is in play, using appendChild is a problem for IE6.
1863        //When that browser dies, this can be removed. Details in this jQuery bug:
1864        //http://dev.jquery.com/ticket/2709
1865        baseElement = document.getElementsByTagName('base')[0];
1866        if (baseElement) {
1867            head = s.head = baseElement.parentNode;
1868        }
1869    }
1870
1871    /**
1872     * Any errors that require explicitly generates will be passed to this
1873     * function. Intercept/override it if you want custom error handling.
1874     * @param {Error} err the error object.
1875     */
1876    req.onError = defaultOnError;
1877
1878    /**
1879     * Creates the node for the load command. Only used in browser envs.
1880     */
1881    req.createNode = function (config, moduleName, url) {
1882        var node = config.xhtml ?
1883                document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
1884                document.createElement('script');
1885        node.type = config.scriptType || 'text/javascript';
1886        node.charset = 'utf-8';
1887        node.async = true;
1888        return node;
1889    };
1890
1891    /**
1892     * Does the request to load a module for the browser case.
1893     * Make this a separate function to allow other environments
1894     * to override it.
1895     *
1896     * @param {Object} context the require context to find state.
1897     * @param {String} moduleName the name of the module.
1898     * @param {Object} url the URL to the module.
1899     */
1900    req.load = function (context, moduleName, url) {
1901        var config = (context && context.config) || {},
1902            node;
1903        if (isBrowser) {
1904            //In the browser so use a script tag
1905            node = req.createNode(config, moduleName, url);
1906
1907            node.setAttribute('data-requirecontext', context.contextName);
1908            node.setAttribute('data-requiremodule', moduleName);
1909
1910            //Set up load listener. Test attachEvent first because IE9 has
1911            //a subtle issue in its addEventListener and script onload firings
1912            //that do not match the behavior of all other browsers with
1913            //addEventListener support, which fire the onload event for a
1914            //script right after the script execution. See:
1915            //https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
1916            //UNFORTUNATELY Opera implements attachEvent but does not follow the script
1917            //script execution mode.
1918            if (node.attachEvent &&
1919                    //Check if node.attachEvent is artificially added by custom script or
1920                    //natively supported by browser
1921                    //read https://github.com/requirejs/requirejs/issues/187
1922                    //if we can NOT find [native code] then it must NOT natively supported.
1923                    //in IE8, node.attachEvent does not have toString()
1924                    //Note the test for "[native code" with no closing brace, see:
1925                    //https://github.com/requirejs/requirejs/issues/273
1926                    !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) &&
1927                    !isOpera) {
1928                //Probably IE. IE (at least 6-8) do not fire
1929                //script onload right after executing the script, so
1930                //we cannot tie the anonymous define call to a name.
1931                //However, IE reports the script as being in 'interactive'
1932                //readyState at the time of the define call.
1933                useInteractive = true;
1934
1935                node.attachEvent('onreadystatechange', context.onScriptLoad);
1936                //It would be great to add an error handler here to catch
1937                //404s in IE9+. However, onreadystatechange will fire before
1938                //the error handler, so that does not help. If addEventListener
1939                //is used, then IE will fire error before load, but we cannot
1940                //use that pathway given the connect.microsoft.com issue
1941                //mentioned above about not doing the 'script execute,
1942                //then fire the script load event listener before execute
1943                //next script' that other browsers do.
1944                //Best hope: IE10 fixes the issues,
1945                //and then destroys all installs of IE 6-9.
1946                //node.attachEvent('onerror', context.onScriptError);
1947            } else {
1948                node.addEventListener('load', context.onScriptLoad, false);
1949                node.addEventListener('error', context.onScriptError, false);
1950            }
1951            node.src = url;
1952
1953            //Calling onNodeCreated after all properties on the node have been
1954            //set, but before it is placed in the DOM.
1955            if (config.onNodeCreated) {
1956                config.onNodeCreated(node, config, moduleName, url);
1957            }
1958
1959            //For some cache cases in IE 6-8, the script executes before the end
1960            //of the appendChild execution, so to tie an anonymous define
1961            //call to the module name (which is stored on the node), hold on
1962            //to a reference to this node, but clear after the DOM insertion.
1963            currentlyAddingScript = node;
1964            if (baseElement) {
1965                head.insertBefore(node, baseElement);
1966            } else {
1967                head.appendChild(node);
1968            }
1969            currentlyAddingScript = null;
1970
1971            return node;
1972        } else if (isWebWorker) {
1973            try {
1974                //In a web worker, use importScripts. This is not a very
1975                //efficient use of importScripts, importScripts will block until
1976                //its script is downloaded and evaluated. However, if web workers
1977                //are in play, the expectation is that a build has been done so
1978                //that only one script needs to be loaded anyway. This may need
1979                //to be reevaluated if other use cases become common.
1980
1981                // Post a task to the event loop to work around a bug in WebKit
1982                // where the worker gets garbage-collected after calling
1983                // importScripts(): https://webkit.org/b/153317
1984                setTimeout(function() {}, 0);
1985                importScripts(url);
1986
1987                //Account for anonymous modules
1988                context.completeLoad(moduleName);
1989            } catch (e) {
1990                context.onError(makeError('importscripts',
1991                                'importScripts failed for ' +
1992                                    moduleName + ' at ' + url,
1993                                e,
1994                                [moduleName]));
1995            }
1996        }
1997    };
1998
1999    function getInteractiveScript() {
2000        if (interactiveScript && interactiveScript.readyState === 'interactive') {
2001            return interactiveScript;
2002        }
2003
2004        eachReverse(scripts(), function (script) {
2005            if (script.readyState === 'interactive') {
2006                return (interactiveScript = script);
2007            }
2008        });
2009        return interactiveScript;
2010    }
2011
2012    //Look for a data-main script attribute, which could also adjust the baseUrl.
2013    if (isBrowser && !cfg.skipDataMain) {
2014        //Figure out baseUrl. Get it from the script tag with require.js in it.
2015        eachReverse(scripts(), function (script) {
2016            //Set the 'head' where we can append children by
2017            //using the script's parent.
2018            if (!head) {
2019                head = script.parentNode;
2020            }
2021
2022            //Look for a data-main attribute to set main script for the page
2023            //to load. If it is there, the path to data main becomes the
2024            //baseUrl, if it is not already set.
2025            dataMain = script.getAttribute('data-main');
2026            if (dataMain) {
2027                //Preserve dataMain in case it is a path (i.e. contains '?')
2028                mainScript = dataMain;
2029
2030                //Set final baseUrl if there is not already an explicit one,
2031                //but only do so if the data-main value is not a loader plugin
2032                //module ID.
2033                if (!cfg.baseUrl && mainScript.indexOf('!') === -1) {
2034                    //Pull off the directory of data-main for use as the
2035                    //baseUrl.
2036                    src = mainScript.split('/');
2037                    mainScript = src.pop();
2038                    subPath = src.length ? src.join('/')  + '/' : './';
2039
2040                    cfg.baseUrl = subPath;
2041                }
2042
2043                //Strip off any trailing .js since mainScript is now
2044                //like a module name.
2045                mainScript = mainScript.replace(jsSuffixRegExp, '');
2046
2047                //If mainScript is still a path, fall back to dataMain
2048                if (req.jsExtRegExp.test(mainScript)) {
2049                    mainScript = dataMain;
2050                }
2051
2052                //Put the data-main script in the files to load.
2053                cfg.deps = cfg.deps ? cfg.deps.concat(mainScript) : [mainScript];
2054
2055                return true;
2056            }
2057        });
2058    }
2059
2060    /**
2061     * The function that handles definitions of modules. Differs from
2062     * require() in that a string for the module should be the first argument,
2063     * and the function to execute after dependencies are loaded should
2064     * return a value to define the module corresponding to the first argument's
2065     * name.
2066     */
2067    define = function (name, deps, callback) {
2068        var node, context;
2069
2070        //Allow for anonymous modules
2071        if (typeof name !== 'string') {
2072            //Adjust args appropriately
2073            callback = deps;
2074            deps = name;
2075            name = null;
2076        }
2077
2078        //This module may not have dependencies
2079        if (!isArray(deps)) {
2080            callback = deps;
2081            deps = null;
2082        }
2083
2084        //If no name, and callback is a function, then figure out if it a
2085        //CommonJS thing with dependencies.
2086        if (!deps && isFunction(callback)) {
2087            deps = [];
2088            //Remove comments from the callback string,
2089            //look for require calls, and pull them into the dependencies,
2090            //but only if there are function args.
2091            if (callback.length) {
2092                callback
2093                    .toString()
2094                    .replace(commentRegExp, commentReplace)
2095                    .replace(cjsRequireRegExp, function (match, dep) {
2096                        deps.push(dep);
2097                    });
2098
2099                //May be a CommonJS thing even without require calls, but still
2100                //could use exports, and module. Avoid doing exports and module
2101                //work though if it just needs require.
2102                //REQUIRES the function to expect the CommonJS variables in the
2103                //order listed below.
2104                deps = (callback.length === 1 ? ['require'] : ['require', 'exports', 'module']).concat(deps);
2105            }
2106        }
2107
2108        //If in IE 6-8 and hit an anonymous define() call, do the interactive
2109        //work.
2110        if (useInteractive) {
2111            node = currentlyAddingScript || getInteractiveScript();
2112            if (node) {
2113                if (!name) {
2114                    name = node.getAttribute('data-requiremodule');
2115                }
2116                context = contexts[node.getAttribute('data-requirecontext')];
2117            }
2118        }
2119
2120        //Always save off evaluating the def call until the script onload handler.
2121        //This allows multiple modules to be in a file without prematurely
2122        //tracing dependencies, and allows for anonymous module support,
2123        //where the module name is not known until the script onload event
2124        //occurs. If no context, use the global queue, and get it processed
2125        //in the onscript load callback.
2126        if (context) {
2127            context.defQueue.push([name, deps, callback]);
2128            context.defQueueMap[name] = true;
2129        } else {
2130            globalDefQueue.push([name, deps, callback]);
2131        }
2132    };
2133
2134    define.amd = {
2135        jQuery: true
2136    };
2137
2138    /**
2139     * Executes the text. Normally just uses eval, but can be modified
2140     * to use a better, environment-specific call. Only used for transpiling
2141     * loader plugins, not for plain JS modules.
2142     * @param {String} text the text to execute/evaluate.
2143     */
2144    req.exec = function (text) {
2145        /*jslint evil: true */
2146        return eval(text);
2147    };
2148
2149    //Set up with config info.
2150    req(cfg);
2151}(this, (typeof setTimeout === 'undefined' ? undefined : setTimeout)));