lfr-amd-loader

<!doctype html> <html lang="en"> <head> <title>Code coverage report for umd/script-loader.js</title> <meta charset="utf-8"> <link rel="stylesheet" href="../prettify.css"> <link rel="stylesheet" href="../base.css"> <style type='text/css'> div.coverage-summary .sorter { background-image: url(../sort-arrow-sprite.png); } </style> </head> <body> <div class="header high"> <h1>Code coverage report for umd/script-loader.js</h1> <h2> Statements: 99.43% (173 / 174)      Branches: 100% (78 / 78)      Functions: 97.37% (37 / 38)      Lines: 99.43% (173 / 174)      Ignored: 3 statements, 15 branches      </h2> <div class="path"><a href="../index.html">All files</a> » <a href="index.html">umd/</a> » script-loader.js</div> </div> <div class="body"> <pre><table class="coverage"> <tr><td class="line-count">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586</td><td class="line-coverage">11     11     11 11       11 1       11 11 11                         1 11   11   11     11                                                 13   13   13 13 13   13   13   13 11     13                   1                   1                               11   11 11 11         11     11 8 8 8     3   3 7 4     3 3 3   3         11       11 10   9     9 8     2 2                             2   2 2 3 2       2   2       2                       110 11       110                     11 9     11                       9   9   9 11   11     9                     6 6     6                       10   10   10 16     16 13       10                       10   10   10   10   6   6     6 13         6 5         5         1         4 4                                         13 13   13       13 12   12   12         13 1   1     13                         11   11 11 11 11     11 14 10       11   10   1                         9   9 15   15 3     12     12   12 20   20         20 12   12         8   8   8   8       12           12                         15       15   15 2   2     15                         9   9 9   9 15     9 9   9   9 15     9   9                               1 11 1     11   11   11 11       11 1         11 11     11     1 11   11 176 176       11     11  </td><td class="text"><pre class="prettyprint lang-js">(function (global, factory) { 'use strict';   var built = factory(global);   /* istanbul ignore else */ Eif (typeof module === 'object' && module) { module.exports = built; }   /* istanbul ignore next */ Iif (typeof define === 'function' && define.amd) { define(factory); }   /* jshint newcap:false */ global.Loader = new built(); global.require = global.Loader.require.bind(global.Loader); global.define = global.Loader.define.bind(global.Loader); }(typeof global !== 'undefined' ? global : /* istanbul ignore next */ this, function (global) {   'use strict';   /** * Creates an instance of Loader class. * * @namespace Loader * @extends EventEmitter * @constructor */   function Loader(config) { Loader.superclass.constructor.apply(this, arguments);   this._config = config || global.__CONFIG__;   this._modulesMap = {}; }   extend(Loader, global.EventEmitter, { /** * Defines a module in the system and fires {@link Loader#event:moduleRegister} event with the registered module as param. * * @memberof! Loader# * @param {string} name The name of the module. * @param {array} dependencies List of module dependencies. * @param {function} implementation The implementation of the module. * @param {object=} config Object configuration: * <ul> * Optional properties: * <li>path (String) - Explicitly set path of the module. If omitted, module name will be used as path</li> * <li>condition (Object) Object which represents if the module should be added automatically after another * module. * It should have the following properties:</li> * <ul> * <li>trigger - the module, which should trigger the loading of the current module</li> * <li>test - function, which should return true if module should be loaded</li> * </ul> * </ul> * @return {Object} The constructed module. */ define: function(name, dependencies, implementation, config) { // Create new module by merging the provided config with the passed name, // dependencies and the implementation. var module = config || {};   name = this._getConfigParser().mapModule(name);   module.name = name; module.dependencies = dependencies; module.pendingImplementation = implementation;   var configParser = this._getConfigParser();   configParser.addModule(module);   if (!this._modulesMap[module.name]) { this._modulesMap[module.name] = true; }   this.emit('moduleRegister', module); },   /** * Returns list of currently registered conditional modules. * * @memberof! Loader# * @return {array} List of currently registered conditional modules. */ getConditionalModules: function() { return this._getConfigParser().getConditionalModules(); },   /** * Returns list of currently registered modules. * * @memberof! Loader# * @return {array} List of currently registered modules. */ getModules: function() { return this._getConfigParser().getModules(); },   /** * Requires list of modules. If a module is not yet registered, it will be ignored and its implementation * in the provided success callback will be left undefined. * * @memberof! Loader# * @param {array|string[]} modules Modules can be specified as an array of strings or provided as * multiple string parameters. * @param {function} success Callback, which will be invoked in case of success. The provided parameters will * be implementations of all required modules. * @param {function} failure Callback, which will be invoked in case of failure. One parameter with * information about the error will be provided. */ require: function() { var self = this;   var failureCallback; var modules; var successCallback;   // Modules can be specified by as an array, or just as parameters to the function // We do not slice or leak arguments to not cause V8 performance penalties // TODO: This could be extracted as an inline function (hint) var isArgsArray = Array.isArray ? Array.isArray(arguments[0]) : /* istanbul ignore next */ Object.prototype.toString.call(arguments[0]) === '[object Array]';   if (isArgsArray) { modules = arguments[0]; successCallback = typeof arguments[1] === 'function' ? arguments[1] : null; failureCallback = typeof arguments[2] === 'function' ? arguments[2] : null;   } else { modules = [];   for (var i = 0; i < arguments.length; ++i) { if (typeof arguments[i] === 'string') { modules[i] = arguments[i];   /* istanbul ignore else */ } else Eif (typeof arguments[i] === 'function') { successCallback = arguments[i]; failureCallback = typeof arguments[++i] === 'function' ? arguments[i] : /* istanbul ignore next */ null;   break; } } }   modules = this._getConfigParser().mapModule(modules);   // Resolve the dependencies of the specified modules by the user // then load their JS scripts self._resolveDependencies(modules).then(function(dependencies) { return self._loadModules(dependencies); }).then(function(loadedModules) { var moduleImplementations = self._getModuleImplementations(modules);   /* istanbul ignore else */ if (successCallback) { successCallback.apply(successCallback, moduleImplementations); } }, function(error) { /* istanbul ignore else */ Eif (failureCallback) { failureCallback.call(failureCallback, error);   } }); },   /** * Creates Promise for module. It will be resolved as soon as module is being loaded from server. * * @memberof! Loader# * @protected * @param {string} moduleName The name of module for which Promise should be created. * @return {Promise} Promise, which will be resolved as soon as the requested module is being loaded. */ _createModulePromise: function(moduleName) { var self = this;   return new Promise(function(resolve, reject) { var onModuleRegister = function(registeredModule) { if (registeredModule.name === moduleName) { self.off('moduleRegister', onModuleRegister);   // Overwrite the promise entry in modules map with simple true value. // Hopefully GC will remove this promise from the memory. self._modulesMap[moduleName] = true;   resolve(moduleName); } };   self.on('moduleRegister', onModuleRegister); }); },   /** * Returns instance of {@link ConfigParser} class currently used. * * @memberof! Loader# * @protected * @return {ConfigParser} Instance of {@link ConfigParser} class. */ _getConfigParser: function() { /* istanbul ignore else */ if (!this._configParser) { this._configParser = new global.ConfigParser(this._config); }     return this._configParser; },   /** * Returns instance of {@link DependencyBuilder} class currently used. * * @memberof! Loader# * @protected * @return {DependencyBuilder} Instance of {@link DependencyBuilder} class. */ _getDependencyBuilder: function() { if (!this._dependencyBuilder) { this._dependencyBuilder = new global.DependencyBuilder(this._getConfigParser()); }   return this._dependencyBuilder; },   /** * Retrieves module implementations to an array. * * @memberof! Loader# * @protected * @param {array} requiredModules Lit of modules, which implementations will be added to an array. * @return {array} List of modules implementations. */ _getModuleImplementations: function(requiredModules) { var moduleImplementations = [];   var modules = this._getConfigParser().getModules();   for (var i = 0; i < requiredModules.length; i++) { var requiredModule = modules[requiredModules[i]];   moduleImplementations.push(requiredModule ? requiredModule.implementation : undefined); }   return moduleImplementations; },   /** * Returns instance of {@link URLBuilder} class currently used. * * @memberof! Loader# * @protected * @return {URLBuilder} Instance of {@link URLBuilder} class. */ _getURLBuilder: function() { /* istanbul ignore else */ Eif (!this._urlBuilder) { this._urlBuilder = new global.URLBuilder(this._getConfigParser()); }   return this._urlBuilder; },   /** * Filters a list of modules and returns only these which have been not yet requested for delivery via network. * * @memberof! Loader# * @protected * @param {array} modules List of modules which which will be filtered. * @return {array} List of modules not yet requested for delivery via network. */ _filterNotRequestedModules: function(modules) { var missingModules = [];   var registeredModules = this._getConfigParser().getModules();   for (var i = 0; i < modules.length; i++) { var registeredModule = registeredModules[modules[i]];   // Get all modules which are not yet requested from the server. if (registeredModule !== 'exports' && (!registeredModule || !registeredModule.requested)) { missingModules.push(modules[i]); } }   return missingModules; },   /** * Loads list of modules. * * @memberof! Loader# * @protected * @param {array} modules List of modules to be loaded. * @return {Promise} Promise, which will be resolved as soon as all module a being loaded. */ _loadModules: function(moduleNames) { var self = this;   return new Promise(function(resolve, reject) { // First, detect any still unloaded modules var notRequestedModules = self._filterNotRequestedModules(moduleNames);   if (notRequestedModules.length) { // If there are unloaded modules, construct their URLs var urls = self._getURLBuilder().build(notRequestedModules);   var pendingScripts = [];   // Create promises for each of the scripts, which should be loaded for (var i = 0; i < urls.length; i++) { pendingScripts.push(self._loadScript(urls[i])); }   // Wait for resolving all script Promises // As soon as that happens, wait for each module to define itself Promise.all(pendingScripts).then(function(loadedScripts) { return self._waitForModules(moduleNames); }) // As soon as all scripts were loaded and all dependencies have been resolved, // resolve the main Promise .then(function(modules) { resolve(modules); }) // If any script fails to load or other error happens, // reject the main Promise .catch(function(error) { reject(error); }); } else { // If there are no any missing modules, just wait for modules dependencies // to be resolved and then resolve the main promise self._waitForModules(moduleNames).then(function(modules) { resolve(modules); }) // If some error happens, for example if some module implementation // throws error, reject the main Promise . catch(function(error) { reject(error); }); } }); },   /** * Loads a &ltscript&gt element on the page. * * @memberof! Loader# * @protected * @param {string} url The src of the script. * @return {Promise} Promise which will be resolved as soon as the script is being loaded. */ _loadScript: function(url) { return new Promise(function(resolve, reject) { var script = document.createElement('script');   script.src = url;   // On ready state change is needed for IE < 9, not sure if that is needed anymore, // it depends which browsers will we support at the end script.onload = script.onreadystatechange = function() { /* istanbul ignore else */ Eif (!this.readyState || /* istanbul ignore next */ this.readyState === 'complete' || /* istanbul ignore next */ this.readyState === 'load') {   script.onload = script.onreadystatechange = null;   resolve(script); } };   // If some script fails to load, reject the main Promise script.onerror = function() { document.body.removeChild(script);   reject(script); };   document.body.appendChild(script); }); },   /** * Resolves modules dependencies. * * @memberof! Loader# * @protected * @param {array} modules List of modules which dependencies should be resolved. * @return {Promise} Promise which will be resolved as soon as all dependencies are being resolved. */ _resolveDependencies: function(modules) { var self = this;   return new Promise(function(resolve, reject) { try { var registeredModules = self._getConfigParser().getModules(); var finalModules = [];   // Ignore wrongly specified byt the user (misspelled) modules for (var i = 0; i < modules.length; i++) { if (registeredModules[modules[i]]) { finalModules.push(modules[i]); } }   var dependencies = self._getDependencyBuilder().resolveDependencies(finalModules);   resolve(dependencies); } catch (error) { reject(error); } }); },   /** * Invokes the implementation method of list of modules passing the implementations of its dependencies. * * @memberof! Loader# * @protected * @param {array} modules List of modules to which implementation should be set. */ _setModuleImplementation: function(modules) { var registeredModules = this._getConfigParser().getModules();   for (var i = 0; i < modules.length; i++) { var module = modules[i];   if (module.implementation) { continue; }   var dependencyImplementations = [];   // Leave exports implementation undefined by default var exportsImpl;   for (var j = 0; j < module.dependencies.length; j++) { var dependency = module.dependencies[j];   var impl;   // If the current dependency of this module is 'exports', // create an empty object and pass it as implementation of // 'exports' module