resources/src/mediawiki.base/mediawiki.base.js

   1 /*!
   2  * This file is currently loaded as part of the 'mediawiki' module and therefore
   3  * concatenated to mediawiki.js and executed at the same time. This file exists
   4  * to help prepare for splitting up the 'mediawiki' module.
   5  * This effort is tracked at https://phabricator.wikimedia.org/T192623
   6  *
   7  * In short:
   8  *
   9  * - mediawiki.js will be reduced to the minimum needed to define mw.loader and
  10  *   mw.config, and then moved to its own private "mediawiki.loader" module that
  11  *   can be embedded within the StartupModule response.
  12  *
  13  * - mediawiki.base.js and other files in this directory will remain part of the
  14  *   "mediawiki" module, and will remain a default/implicit dependency for all
  15  *   regular modules, just like jquery and wikibits already are.
  16  */
  17 ( function () {
  18         'use strict';
  19
  20         var slice = Array.prototype.slice,
  21                 mwLoaderTrack = mw.track,
  22                 trackCallbacks = $.Callbacks( 'memory' ),
  23                 trackHandlers = [],
  24                 queue;
  25
  26         /**
  27          * Object constructor for messages.
  28          *
  29          * Similar to the Message class in MediaWiki PHP.
  30          *
  31          * Format defaults to 'text'.
  32          *
  33          *     @example
  34          *
  35          *     var obj, str;
  36          *     mw.messages.set( {
  37          *         'hello': 'Hello world',
  38          *         'hello-user': 'Hello, $1!',
  39          *         'welcome-user': 'Welcome back to $2, $1! Last visit by $1: $3'
  40          *     } );
  41          *
  42          *     obj = new mw.Message( mw.messages, 'hello' );
  43          *     mw.log( obj.text() );
  44          *     // Hello world
  45          *
  46          *     obj = new mw.Message( mw.messages, 'hello-user', [ 'John Doe' ] );
  47          *     mw.log( obj.text() );
  48          *     // Hello, John Doe!
  49          *
  50          *     obj = new mw.Message( mw.messages, 'welcome-user', [ 'John Doe', 'Wikipedia', '2 hours ago' ] );
  51          *     mw.log( obj.text() );
  52          *     // Welcome back to Wikipedia, John Doe! Last visit by John Doe: 2 hours ago
  53          *
  54          *     // Using mw.message shortcut
  55          *     obj = mw.message( 'hello-user', 'John Doe' );
  56          *     mw.log( obj.text() );
  57          *     // Hello, John Doe!
  58          *
  59          *     // Using mw.msg shortcut
  60          *     str = mw.msg( 'hello-user', 'John Doe' );
  61          *     mw.log( str );
  62          *     // Hello, John Doe!
  63          *
  64          *     // Different formats
  65          *     obj = new mw.Message( mw.messages, 'hello-user', [ 'John "Wiki" <3 Doe' ] );
  66          *
  67          *     obj.format = 'text';
  68          *     str = obj.toString();
  69          *     // Same as:
  70          *     str = obj.text();
  71          *
  72          *     mw.log( str );
  73          *     // Hello, John "Wiki" <3 Doe!
  74          *
  75          *     mw.log( obj.escaped() );
  76          *     // Hello, John &quot;Wiki&quot; &lt;3 Doe!
  77          *
  78          * @class mw.Message
  79          *
  80          * @constructor
  81          * @param {mw.Map} map Message store
  82          * @param {string} key
  83          * @param {Array} [parameters]
  84          */
  85         function Message( map, key, parameters ) {
  86                 this.format = 'text';
  87                 this.map = map;
  88                 this.key = key;
  89                 this.parameters = parameters === undefined ? [] : slice.call( parameters );
  90                 return this;
  91         }
  92
  93         Message.prototype = {
  94                 /**
  95                  * Get parsed contents of the message.
  96                  *
  97                  * The default parser does simple $N replacements and nothing else.
  98                  * This may be overridden to provide a more complex message parser.
  99                  * The primary override is in the mediawiki.jqueryMsg module.
 100                  *
 101                  * This function will not be called for nonexistent messages.
 102                  *
 103                  * @return {string} Parsed message
 104                  */
 105                 parser: function () {
 106                         var text = this.map.get( this.key );
 107                         if (
 108                                 mw.config.get( 'wgUserLanguage' ) === 'qqx' &&
 109                                 ( !text || text === '(' + this.key + ')' )
 110                         ) {
 111                                 text = '(' + this.key + '$*)';
 112                         }
 113                         return mw.format.apply( null, [ text ].concat( this.parameters ) );
 114                 },
 115
 116                 /**
 117                  * Add (does not replace) parameters for `$N` placeholder values.
 118                  *
 119                  * @param {Array} parameters
 120                  * @return {mw.Message}
 121                  * @chainable
 122                  */
 123                 params: function ( parameters ) {
 124                         var i;
 125                         for ( i = 0; i < parameters.length; i++ ) {
 126                                 this.parameters.push( parameters[ i ] );
 127                         }
 128                         return this;
 129                 },
 130
 131                 /**
 132                  * Convert message object to its string form based on current format.
 133                  *
 134                  * @return {string} Message as a string in the current form, or `<key>` if key
 135                  *  does not exist.
 136                  */
 137                 toString: function () {
 138                         var text;
 139
 140                         if ( !this.exists() ) {
 141                                 // Use ⧼key⧽ as text if key does not exist
 142                                 // Err on the side of safety, ensure that the output
 143                                 // is always html safe in the event the message key is
 144                                 // missing, since in that case its highly likely the
 145                                 // message key is user-controlled.
 146                                 // '⧼' is used instead of '<' to side-step any
 147                                 // double-escaping issues.
 148                                 // (Keep synchronised with Message::toString() in PHP.)
 149                                 return '⧼' + mw.html.escape( this.key ) + '⧽';
 150                         }
 151
 152                         if ( this.format === 'plain' || this.format === 'text' || this.format === 'parse' ) {
 153                                 text = this.parser();
 154                         }
 155
 156                         if ( this.format === 'escaped' ) {
 157                                 text = this.parser();
 158                                 text = mw.html.escape( text );
 159                         }
 160
 161                         return text;
 162                 },
 163
 164                 /**
 165                  * Change format to 'parse' and convert message to string
 166                  *
 167                  * If jqueryMsg is loaded, this parses the message text from wikitext
 168                  * (where supported) to HTML
 169                  *
 170                  * Otherwise, it is equivalent to plain.
 171                  *
 172                  * @return {string} String form of parsed message
 173                  */
 174                 parse: function () {
 175                         this.format = 'parse';
 176                         return this.toString();
 177                 },
 178
 179                 /**
 180                  * Change format to 'plain' and convert message to string
 181                  *
 182                  * This substitutes parameters, but otherwise does not change the
 183                  * message text.
 184                  *
 185                  * @return {string} String form of plain message
 186                  */
 187                 plain: function () {
 188                         this.format = 'plain';
 189                         return this.toString();
 190                 },
 191
 192                 /**
 193                  * Change format to 'text' and convert message to string
 194                  *
 195                  * If jqueryMsg is loaded, {{-transformation is done where supported
 196                  * (such as {{plural:}}, {{gender:}}, {{int:}}).
 197                  *
 198                  * Otherwise, it is equivalent to plain
 199                  *
 200                  * @return {string} String form of text message
 201                  */
 202                 text: function () {
 203                         this.format = 'text';
 204                         return this.toString();
 205                 },
 206
 207                 /**
 208                  * Change the format to 'escaped' and convert message to string
 209                  *
 210                  * This is equivalent to using the 'text' format (see #text), then
 211                  * HTML-escaping the output.
 212                  *
 213                  * @return {string} String form of html escaped message
 214                  */
 215                 escaped: function () {
 216                         this.format = 'escaped';
 217                         return this.toString();
 218                 },
 219
 220                 /**
 221                  * Check if a message exists
 222                  *
 223                  * @see mw.Map#exists
 224                  * @return {boolean}
 225                  */
 226                 exists: function () {
 227                         if ( mw.config.get( 'wgUserLanguage' ) === 'qqx' ) {
 228                                 return true;
 229                         }
 230                         return this.map.exists( this.key );
 231                 }
 232         };
 233
 234         /**
 235          * @class mw
 236          * @singleton
 237          */
 238
 239         /**
 240          * @inheritdoc mw.inspect#runReports
 241          * @method
 242          */
 243         mw.inspect = function () {
 244                 var args = arguments;
 245                 // Lazy-load
 246                 mw.loader.using( 'mediawiki.inspect', function () {
 247                         mw.inspect.runReports.apply( mw.inspect, args );
 248                 } );
 249         };
 250
 251         /**
 252          * Replace $* with a list of parameters for &uselang=qqx.
 253          *
 254          * @private
 255          * @since 1.33
 256          * @param {string} formatString Format string
 257          * @param {Array} parameters Values for $N replacements
 258          * @return {string} Transformed format string
 259          */
 260         mw.internalDoTransformFormatForQqx = function ( formatString, parameters ) {
 261                 var parametersString;
 262                 if ( formatString.indexOf( '$*' ) !== -1 ) {
 263                         parametersString = '';
 264                         if ( parameters.length ) {
 265                                 parametersString = ': ' + parameters.map( function ( _, i ) {
 266                                         return '$' + ( i + 1 );
 267                                 } ).join( ', ' );
 268                         }
 269                         return formatString.replace( '$*', parametersString );
 270                 }
 271                 return formatString;
 272         };
 273
 274         /**
 275          * Format a string. Replace $1, $2 ... $N with positional arguments.
 276          *
 277          * Used by Message#parser().
 278          *
 279          * @since 1.25
 280          * @param {string} formatString Format string
 281          * @param {...Mixed} parameters Values for $N replacements
 282          * @return {string} Formatted string
 283          */
 284         mw.format = function ( formatString ) {
 285                 var parameters = slice.call( arguments, 1 );
 286                 formatString = mw.internalDoTransformFormatForQqx( formatString, parameters );
 287                 return formatString.replace( /\$(\d+)/g, function ( str, match ) {
 288                         var index = parseInt( match, 10 ) - 1;
 289                         return parameters[ index ] !== undefined ? parameters[ index ] : '$' + match;
 290                 } );
 291         };
 292
 293         // Expose Message constructor
 294         mw.Message = Message;
 295
 296         /**
 297          * Get a message object.
 298          *
 299          * Shortcut for `new mw.Message( mw.messages, key, parameters )`.
 300          *
 301          * @see mw.Message
 302          * @param {string} key Key of message to get
 303          * @param {...Mixed} parameters Values for $N replacements
 304          * @return {mw.Message}
 305          */
 306         mw.message = function ( key ) {
 307                 var parameters = slice.call( arguments, 1 );
 308                 return new Message( mw.messages, key, parameters );
 309         };
 310
 311         /**
 312          * Get a message string using the (default) 'text' format.
 313          *
 314          * Shortcut for `mw.message( key, parameters... ).text()`.
 315          *
 316          * @see mw.Message
 317          * @param {string} key Key of message to get
 318          * @param {...Mixed} parameters Values for $N replacements
 319          * @return {string}
 320          */
 321         mw.msg = function () {
 322                 return mw.message.apply( mw.message, arguments ).toString();
 323         };
 324
 325         /**
 326          * Track an analytic event.
 327          *
 328          * This method provides a generic means for MediaWiki JavaScript code to capture state
 329          * information for analysis. Each logged event specifies a string topic name that describes
 330          * the kind of event that it is. Topic names consist of dot-separated path components,
 331          * arranged from most general to most specific. Each path component should have a clear and
 332          * well-defined purpose.
 333          *
 334          * Data handlers are registered via `mw.trackSubscribe`, and receive the full set of
 335          * events that match their subcription, including those that fired before the handler was
 336          * bound.
 337          *
 338          * @param {string} topic Topic name
 339          * @param {Object} [data] Data describing the event, encoded as an object
 340          */
 341         mw.track = function ( topic, data ) {
 342                 mwLoaderTrack( topic, data );
 343                 trackCallbacks.fire( mw.trackQueue );
 344         };
 345
 346         /**
 347          * Register a handler for subset of analytic events, specified by topic.
 348          *
 349          * Handlers will be called once for each tracked event, including any events that fired before the
 350          * handler was registered; 'this' is set to a plain object with a 'timeStamp' property indicating
 351          * the exact time at which the event fired, a string 'topic' property naming the event, and a
 352          * 'data' property which is an object of event-specific data. The event topic and event data are
 353          * also passed to the callback as the first and second arguments, respectively.
 354          *
 355          * @param {string} topic Handle events whose name starts with this string prefix
 356          * @param {Function} callback Handler to call for each matching tracked event
 357          * @param {string} callback.topic
 358          * @param {Object} [callback.data]
 359          */
 360         mw.trackSubscribe = function ( topic, callback ) {
 361                 var seen = 0;
 362                 function handler( trackQueue ) {
 363                         var event;
 364                         for ( ; seen < trackQueue.length; seen++ ) {
 365                                 event = trackQueue[ seen ];
 366                                 if ( event.topic.indexOf( topic ) === 0 ) {
 367                                         callback.call( event, event.topic, event.data );
 368                                 }
 369                         }
 370                 }
 371
 372                 trackHandlers.push( [ handler, callback ] );
 373
 374                 trackCallbacks.add( handler );
 375         };
 376
 377         /**
 378          * Stop handling events for a particular handler
 379          *
 380          * @param {Function} callback
 381          */
 382         mw.trackUnsubscribe = function ( callback ) {
 383                 trackHandlers = trackHandlers.filter( function ( fns ) {
 384                         if ( fns[ 1 ] === callback ) {
 385                                 trackCallbacks.remove( fns[ 0 ] );
 386                                 // Ensure the tuple is removed to avoid holding on to closures
 387                                 return false;
 388                         }
 389                         return true;
 390                 } );
 391         };
 392
 393         // Fire events from before track() triggered fire()
 394         trackCallbacks.fire( mw.trackQueue );
 395
 396         /**
 397          * Registry and firing of events.
 398          *
 399          * MediaWiki has various interface components that are extended, enhanced
 400          * or manipulated in some other way by extensions, gadgets and even
 401          * in core itself.
 402          *
 403          * This framework helps streamlining the timing of when these other
 404          * code paths fire their plugins (instead of using document-ready,
 405          * which can and should be limited to firing only once).
 406          *
 407          * Features like navigating to other wiki pages, previewing an edit
 408          * and editing itself – without a refresh – can then retrigger these
 409          * hooks accordingly to ensure everything still works as expected.
 410          *
 411          * Example usage:
 412          *
 413          *     mw.hook( 'wikipage.content' ).add( fn ).remove( fn );
 414          *     mw.hook( 'wikipage.content' ).fire( $content );
 415          *
 416          * Handlers can be added and fired for arbitrary event names at any time. The same
 417          * event can be fired multiple times. The last run of an event is memorized
 418          * (similar to `$(document).ready` and `$.Deferred().done`).
 419          * This means if an event is fired, and a handler added afterwards, the added
 420          * function will be fired right away with the last given event data.
 421          *
 422          * Like Deferreds and Promises, the mw.hook object is both detachable and chainable.
 423          * Thus allowing flexible use and optimal maintainability and authority control.
 424          * You can pass around the `add` and/or `fire` method to another piece of code
 425          * without it having to know the event name (or `mw.hook` for that matter).
 426          *
 427          *     var h = mw.hook( 'bar.ready' );
 428          *     new mw.Foo( .. ).fetch( { callback: h.fire } );
 429          *
 430          * Note: Events are documented with an underscore instead of a dot in the event
 431          * name due to jsduck not supporting dots in that position.
 432          *
 433          * @class mw.hook
 434          */
 435         mw.hook = ( function () {
 436                 var lists = Object.create( null );
 437
 438                 /**
 439                  * Create an instance of mw.hook.
 440                  *
 441                  * @method hook
 442                  * @member mw
 443                  * @param {string} name Name of hook.
 444                  * @return {mw.hook}
 445                  */
 446                 return function ( name ) {
 447                         var list = lists[ name ] || ( lists[ name ] = $.Callbacks( 'memory' ) );
 448
 449                         return {
 450                                 /**
 451                                  * Register a hook handler
 452                                  *
 453                                  * @param {...Function} handler Function to bind.
 454                                  * @chainable
 455                                  */
 456                                 add: list.add,
 457
 458                                 /**
 459                                  * Unregister a hook handler
 460                                  *
 461                                  * @param {...Function} handler Function to unbind.
 462                                  * @chainable
 463                                  */
 464                                 remove: list.remove,
 465
 466                                 /**
 467                                  * Run a hook.
 468                                  *
 469                                  * @param {...Mixed} data
 470                                  * @return {mw.hook}
 471                                  * @chainable
 472                                  */
 473                                 fire: function () {
 474                                         return list.fireWith.call( this, null, slice.call( arguments ) );
 475                                 }
 476                         };
 477                 };
 478         }() );
 479
 480         /**
 481          * HTML construction helper functions
 482          *
 483          *     @example
 484          *
 485          *     var Html, output;
 486          *
 487          *     Html = mw.html;
 488          *     output = Html.element( 'div', {}, new Html.Raw(
 489          *         Html.element( 'img', { src: '<' } )
 490          *     ) );
 491          *     mw.log( output ); // <div><img src="&lt;"/></div>
 492          *
 493          * @class mw.html
 494          * @singleton
 495          */
 496         mw.html = ( function () {
 497                 function escapeCallback( s ) {
 498                         switch ( s ) {
 499                                 case '\'':
 500                                         return '&#039;';
 501                                 case '"':
 502                                         return '&quot;';
 503                                 case '<':
 504                                         return '&lt;';
 505                                 case '>':
 506                                         return '&gt;';
 507                                 case '&':
 508                                         return '&amp;';
 509                         }
 510                 }
 511
 512                 return {
 513                         /**
 514                          * Escape a string for HTML.
 515                          *
 516                          * Converts special characters to HTML entities.
 517                          *
 518                          *     mw.html.escape( '< > \' & "' );
 519                          *     // Returns &lt; &gt; &#039; &amp; &quot;
 520                          *
 521                          * @param {string} s The string to escape
 522                          * @return {string} HTML
 523                          */
 524                         escape: function ( s ) {
 525                                 return s.replace( /['"<>&]/g, escapeCallback );
 526                         },
 527
 528                         /**
 529                          * Create an HTML element string, with safe escaping.
 530                          *
 531                          * @param {string} name The tag name.
 532                          * @param {Object} [attrs] An object with members mapping element names to values
 533                          * @param {string|mw.html.Raw|mw.html.Cdata|null} [contents=null] The contents of the element.
 534                          *
 535                          *  - string: Text to be escaped.
 536                          *  - null: The element is treated as void with short closing form, e.g. `<br/>`.
 537                          *  - this.Raw: The raw value is directly included.
 538                          *  - this.Cdata: The raw value is directly included. An exception is
 539                          *    thrown if it contains any illegal ETAGO delimiter.
 540                          *    See <https://www.w3.org/TR/html401/appendix/notes.html#h-B.3.2>.
 541                          * @return {string} HTML
 542                          */
 543                         element: function ( name, attrs, contents ) {
 544                                 var v, attrName, s = '<' + name;
 545
 546                                 if ( attrs ) {
 547                                         for ( attrName in attrs ) {
 548                                                 v = attrs[ attrName ];
 549                                                 // Convert name=true, to name=name
 550                                                 if ( v === true ) {
 551                                                         v = attrName;
 552                                                         // Skip name=false
 553                                                 } else if ( v === false ) {
 554                                                         continue;
 555                                                 }
 556                                                 s += ' ' + attrName + '="' + this.escape( String( v ) ) + '"';
 557                                         }
 558                                 }
 559                                 if ( contents === undefined || contents === null ) {
 560                                         // Self close tag
 561                                         s += '/>';
 562                                         return s;
 563                                 }
 564                                 // Regular open tag
 565                                 s += '>';
 566                                 switch ( typeof contents ) {
 567                                         case 'string':
 568                                                 // Escaped
 569                                                 s += this.escape( contents );
 570                                                 break;
 571                                         case 'number':
 572                                         case 'boolean':
 573                                                 // Convert to string
 574                                                 s += String( contents );
 575                                                 break;
 576                                         default:
 577                                                 if ( contents instanceof this.Raw ) {
 578                                                         // Raw HTML inclusion
 579                                                         s += contents.value;
 580                                                 } else if ( contents instanceof this.Cdata ) {
 581                                                         // CDATA
 582                                                         if ( /<\/[a-zA-z]/.test( contents.value ) ) {
 583                                                                 throw new Error( 'Illegal end tag found in CDATA' );
 584                                                         }
 585                                                         s += contents.value;
 586                                                 } else {
 587                                                         throw new Error( 'Invalid type of contents' );
 588                                                 }
 589                                 }
 590                                 s += '</' + name + '>';
 591                                 return s;
 592                         },
 593
 594                         /**
 595                          * Wrapper object for raw HTML passed to mw.html.element().
 596                          *
 597                          * @class mw.html.Raw
 598                          * @constructor
 599                          * @param {string} value
 600                          */
 601                         Raw: function ( value ) {
 602                                 this.value = value;
 603                         },
 604
 605                         /**
 606                          * Wrapper object for CDATA element contents passed to mw.html.element()
 607                          *
 608                          * @class mw.html.Cdata
 609                          * @constructor
 610                          * @param {string} value
 611                          */
 612                         Cdata: function ( value ) {
 613                                 this.value = value;
 614                         }
 615                 };
 616         }() );
 617
 618         /**
 619          * Execute a function as soon as one or more required modules are ready.
 620          *
 621          * Example of inline dependency on OOjs:
 622          *
 623          *     mw.loader.using( 'oojs', function () {
 624          *         OO.compare( [ 1 ], [ 1 ] );
 625          *     } );
 626          *
 627          * Example of inline dependency obtained via `require()`:
 628          *
 629          *     mw.loader.using( [ 'mediawiki.util' ], function ( require ) {
 630          *         var util = require( 'mediawiki.util' );
 631          *     } );
 632          *
 633          * Since MediaWiki 1.23 this also returns a promise.
 634          *
 635          * Since MediaWiki 1.28 the promise is resolved with a `require` function.
 636          *
 637          * @member mw.loader
 638          * @param {string|Array} dependencies Module name or array of modules names the
 639          *  callback depends on to be ready before executing
 640          * @param {Function} [ready] Callback to execute when all dependencies are ready
 641          * @param {Function} [error] Callback to execute if one or more dependencies failed
 642          * @return {jQuery.Promise} With a `require` function
 643          */
 644         mw.loader.using = function ( dependencies, ready, error ) {
 645                 var deferred = $.Deferred();
 646
 647                 // Allow calling with a single dependency as a string
 648                 if ( !Array.isArray( dependencies ) ) {
 649                         dependencies = [ dependencies ];
 650                 }
 651
 652                 if ( ready ) {
 653                         deferred.done( ready );
 654                 }
 655                 if ( error ) {
 656                         deferred.fail( error );
 657                 }
 658
 659                 try {
 660                         // Resolve entire dependency map
 661                         dependencies = mw.loader.resolve( dependencies );
 662                 } catch ( e ) {
 663                         return deferred.reject( e ).promise();
 664                 }
 665
 666                 mw.loader.enqueue(
 667                         dependencies,
 668                         function () { deferred.resolve( mw.loader.require ); },
 669                         deferred.reject
 670                 );
 671
 672                 return deferred.promise();
 673         };
 674
 675         /**
 676          * Load a script by URL.
 677          *
 678          * Example:
 679          *
 680          *     mw.loader.getScript(
 681          *         'https://example.org/x-1.0.0.js'
 682          *     )
 683          *         .then( function () {
 684          *             // Script succeeded. You can use X now.
 685          *         }, function ( e ) {
 686          *             // Script failed. X is not avaiable
 687          *             mw.log.error( e.message ); // => "Failed to load script"
 688          *         } );
 689          *     } );
 690          *
 691          * @member mw.loader
 692          * @param {string} url Script URL
 693          * @return {jQuery.Promise} Resolved when the script is loaded
 694          */
 695         mw.loader.getScript = function ( url ) {
 696                 return $.ajax( url, { dataType: 'script', cache: true } )
 697                         .catch( function () {
 698                                 throw new Error( 'Failed to load script' );
 699                         } );
 700         };
 701
 702         // Alias $j to jQuery for backwards compatibility
 703         // @deprecated since 1.23 Use $ or jQuery instead
 704         mw.log.deprecate( window, '$j', $, 'Use $ or jQuery instead.' );
 705
 706         // Process callbacks for Grade A that require modules.
 707         queue = window.RLQ;
 708         // Replace temporary RLQ implementation from startup.js with the
 709         // final implementation that also processes callbacks that can
 710         // require modules. It must also support late arrivals of
 711         // plain callbacks. (T208093)
 712         window.RLQ = {
 713                 push: function ( entry ) {
 714                         if ( typeof entry === 'function' ) {
 715                                 entry();
 716                         } else {
 717                                 mw.loader.using( entry[ 0 ], entry[ 1 ] );
 718                         }
 719                 }
 720         };
 721         while ( queue[ 0 ] ) {
 722                 window.RLQ.push( queue.shift() );
 723         }
 724 }() );