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   1  // The MIT License
   2  //
   3  // Copyright (c) 2009 Chris Wanstrath (Ruby)
   4  // Copyright (c) 2010-2014 Jan Lehnardt (JavaScript)
   5  // Copyright (c) 2010-2015 The mustache.js community
   6  //
   7  // Permission is hereby granted, free of charge, to any person obtaining
   8  // a copy of this software and associated documentation files (the
   9  // "Software"), to deal in the Software without restriction, including
  10  // without limitation the rights to use, copy, modify, merge, publish,
  11  // distribute, sublicense, and/or sell copies of the Software, and to
  12  // permit persons to whom the Software is furnished to do so, subject to
  13  // the following conditions:
  14  //
  15  // The above copyright notice and this permission notice shall be
  16  // included in all copies or substantial portions of the Software.
  17  //
  18  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  22  // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  //
  26  
  27  // Description of import into Moodle:
  28  // Checkout from https://github.com/moodle/custom-mustache.js
  29  // Rebase onto latest release tag from https://github.com/janl/mustache.js
  30  // Copy mustache.js into lib/amd/src/ in Moodle folder.
  31  // Add the license as a comment to the file and these instructions.
  32  // Add jshint tags so this file is not linted.
  33  // Remove the "global define:" comment (hint for linter)
  34  // Make sure that you have not removed the custom code for '$' and '<'.
  35  
  36  /*!
  37   * mustache.js - Logic-less {{mustache}} templates with JavaScript
  38   * http://github.com/janl/mustache.js
  39   */
  40  
  41  /* jshint ignore:start */
  42  
  43  (function defineMustache (global, factory) {
  44    if (typeof exports === 'object' && exports && typeof exports.nodeName !== 'string') {
  45      factory(exports); // CommonJS
  46    } else if (typeof define === 'function' && define.amd) {
  47      define(['exports'], factory); // AMD
  48    } else {
  49      global.Mustache = {};
  50      factory(global.Mustache); // script, wsh, asp
  51    }
  52  }(this, function mustacheFactory (mustache) {
  53  
  54    var objectToString = Object.prototype.toString;
  55    var isArray = Array.isArray || function isArrayPolyfill (object) {
  56      return objectToString.call(object) === '[object Array]';
  57    };
  58  
  59    function isFunction (object) {
  60      return typeof object === 'function';
  61    }
  62  
  63    /**
  64     * More correct typeof string handling array
  65     * which normally returns typeof 'object'
  66     */
  67    function typeStr (obj) {
  68      return isArray(obj) ? 'array' : typeof obj;
  69    }
  70  
  71    function escapeRegExp (string) {
  72      return string.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, '\\$&');
  73    }
  74  
  75    /**
  76     * Null safe way of checking whether or not an object,
  77     * including its prototype, has a given property
  78     */
  79    function hasProperty (obj, propName) {
  80      return obj != null && typeof obj === 'object' && (propName in obj);
  81    }
  82  
  83    // Workaround for https://issues.apache.org/jira/browse/COUCHDB-577
  84    // See https://github.com/janl/mustache.js/issues/189
  85    var regExpTest = RegExp.prototype.test;
  86    function testRegExp (re, string) {
  87      return regExpTest.call(re, string);
  88    }
  89  
  90    var nonSpaceRe = /\S/;
  91    function isWhitespace (string) {
  92      return !testRegExp(nonSpaceRe, string);
  93    }
  94  
  95    var entityMap = {
  96      '&': '&amp;',
  97      '<': '&lt;',
  98      '>': '&gt;',
  99      '"': '&quot;',
 100      "'": '&#39;',
 101      '/': '&#x2F;',
 102      '`': '&#x60;',
 103      '=': '&#x3D;'
 104    };
 105  
 106    function escapeHtml (string) {
 107      return String(string).replace(/[&<>"'`=\/]/g, function fromEntityMap (s) {
 108        return entityMap[s];
 109      });
 110    }
 111  
 112    var whiteRe = /\s*/;
 113    var spaceRe = /\s+/;
 114    var equalsRe = /\s*=/;
 115    var curlyRe = /\s*\}/;
 116    var tagRe = /#|\^|\/|>|\{|&|=|!|\$|</;
 117  
 118    /**
 119     * Breaks up the given `template` string into a tree of tokens. If the `tags`
 120     * argument is given here it must be an array with two string values: the
 121     * opening and closing tags used in the template (e.g. [ "<%", "%>" ]). Of
 122     * course, the default is to use mustaches (i.e. mustache.tags).
 123     *
 124     * A token is an array with at least 4 elements. The first element is the
 125     * mustache symbol that was used inside the tag, e.g. "#" or "&". If the tag
 126     * did not contain a symbol (i.e. {{myValue}}) this element is "name". For
 127     * all text that appears outside a symbol this element is "text".
 128     *
 129     * The second element of a token is its "value". For mustache tags this is
 130     * whatever else was inside the tag besides the opening symbol. For text tokens
 131     * this is the text itself.
 132     *
 133     * The third and fourth elements of the token are the start and end indices,
 134     * respectively, of the token in the original template.
 135     *
 136     * Tokens that are the root node of a subtree contain two more elements: 1) an
 137     * array of tokens in the subtree and 2) the index in the original template at
 138     * which the closing tag for that section begins.
 139     */
 140    function parseTemplate (template, tags) {
 141      if (!template)
 142        return [];
 143  
 144      var sections = [];     // Stack to hold section tokens
 145      var tokens = [];       // Buffer to hold the tokens
 146      var spaces = [];       // Indices of whitespace tokens on the current line
 147      var hasTag = false;    // Is there a {{tag}} on the current line?
 148      var nonSpace = false;  // Is there a non-space char on the current line?
 149  
 150      // Strips all whitespace tokens array for the current line
 151      // if there was a {{#tag}} on it and otherwise only space.
 152      function stripSpace () {
 153        if (hasTag && !nonSpace) {
 154          while (spaces.length)
 155            delete tokens[spaces.pop()];
 156        } else {
 157          spaces = [];
 158        }
 159  
 160        hasTag = false;
 161        nonSpace = false;
 162      }
 163  
 164      var openingTagRe, closingTagRe, closingCurlyRe;
 165      function compileTags (tagsToCompile) {
 166        if (typeof tagsToCompile === 'string')
 167          tagsToCompile = tagsToCompile.split(spaceRe, 2);
 168  
 169        if (!isArray(tagsToCompile) || tagsToCompile.length !== 2)
 170          throw new Error('Invalid tags: ' + tagsToCompile);
 171  
 172        openingTagRe = new RegExp(escapeRegExp(tagsToCompile[0]) + '\\s*');
 173        closingTagRe = new RegExp('\\s*' + escapeRegExp(tagsToCompile[1]));
 174        closingCurlyRe = new RegExp('\\s*' + escapeRegExp('}' + tagsToCompile[1]));
 175      }
 176  
 177      compileTags(tags || mustache.tags);
 178  
 179      var scanner = new Scanner(template);
 180  
 181      var start, type, value, chr, token, openSection;
 182      while (!scanner.eos()) {
 183        start = scanner.pos;
 184  
 185        // Match any text between tags.
 186        value = scanner.scanUntil(openingTagRe);
 187  
 188        if (value) {
 189          for (var i = 0, valueLength = value.length; i < valueLength; ++i) {
 190            chr = value.charAt(i);
 191  
 192            if (isWhitespace(chr)) {
 193              spaces.push(tokens.length);
 194            } else {
 195              nonSpace = true;
 196            }
 197  
 198            tokens.push([ 'text', chr, start, start + 1 ]);
 199            start += 1;
 200  
 201            // Check for whitespace on the current line.
 202            if (chr === '\n')
 203              stripSpace();
 204          }
 205        }
 206  
 207        // Match the opening tag.
 208        if (!scanner.scan(openingTagRe))
 209          break;
 210  
 211        hasTag = true;
 212  
 213        // Get the tag type.
 214        type = scanner.scan(tagRe) || 'name';
 215        scanner.scan(whiteRe);
 216  
 217        // Get the tag value.
 218        if (type === '=') {
 219          value = scanner.scanUntil(equalsRe);
 220          scanner.scan(equalsRe);
 221          scanner.scanUntil(closingTagRe);
 222        } else if (type === '{') {
 223          value = scanner.scanUntil(closingCurlyRe);
 224          scanner.scan(curlyRe);
 225          scanner.scanUntil(closingTagRe);
 226          type = '&';
 227        } else {
 228          value = scanner.scanUntil(closingTagRe);
 229        }
 230  
 231        // Match the closing tag.
 232        if (!scanner.scan(closingTagRe))
 233          throw new Error('Unclosed tag at ' + scanner.pos);
 234  
 235        token = [ type, value, start, scanner.pos ];
 236        tokens.push(token);
 237  
 238        if (type === '#' || type === '^' || type === '$' || type === '<') {
 239          sections.push(token);
 240        } else if (type === '/') {
 241          // Check section nesting.
 242          openSection = sections.pop();
 243  
 244          if (!openSection)
 245            throw new Error('Unopened section "' + value + '" at ' + start);
 246  
 247          if (openSection[1] !== value)
 248            throw new Error('Unclosed section "' + openSection[1] + '" at ' + start);
 249        } else if (type === 'name' || type === '{' || type === '&') {
 250          nonSpace = true;
 251        } else if (type === '=') {
 252          // Set the tags for the next time around.
 253          compileTags(value);
 254        }
 255      }
 256  
 257      // Make sure there are no open sections when we're done.
 258      openSection = sections.pop();
 259  
 260      if (openSection)
 261        throw new Error('Unclosed section "' + openSection[1] + '" at ' + scanner.pos);
 262  
 263      return nestTokens(squashTokens(tokens));
 264    }
 265  
 266    /**
 267     * Combines the values of consecutive text tokens in the given `tokens` array
 268     * to a single token.
 269     */
 270    function squashTokens (tokens) {
 271      var squashedTokens = [];
 272  
 273      var token, lastToken;
 274      for (var i = 0, numTokens = tokens.length; i < numTokens; ++i) {
 275        token = tokens[i];
 276  
 277        if (token) {
 278          if (token[0] === 'text' && lastToken && lastToken[0] === 'text') {
 279            lastToken[1] += token[1];
 280            lastToken[3] = token[3];
 281          } else {
 282            squashedTokens.push(token);
 283            lastToken = token;
 284          }
 285        }
 286      }
 287  
 288      return squashedTokens;
 289    }
 290  
 291    /**
 292     * Forms the given array of `tokens` into a nested tree structure where
 293     * tokens that represent a section have two additional items: 1) an array of
 294     * all tokens that appear in that section and 2) the index in the original
 295     * template that represents the end of that section.
 296     */
 297    function nestTokens (tokens) {
 298      var nestedTokens = [];
 299      var collector = nestedTokens;
 300      var sections = [];
 301  
 302      var token, section;
 303      for (var i = 0, numTokens = tokens.length; i < numTokens; ++i) {
 304        token = tokens[i];
 305  
 306        switch (token[0]) {
 307          case '$':
 308          case '<':
 309          case '#':
 310          case '^':
 311            collector.push(token);
 312            sections.push(token);
 313            collector = token[4] = [];
 314            break;
 315          case '/':
 316            section = sections.pop();
 317            section[5] = token[2];
 318            collector = sections.length > 0 ? sections[sections.length - 1][4] : nestedTokens;
 319            break;
 320          default:
 321            collector.push(token);
 322        }
 323      }
 324  
 325      return nestedTokens;
 326    }
 327  
 328    /**
 329     * A simple string scanner that is used by the template parser to find
 330     * tokens in template strings.
 331     */
 332    function Scanner (string) {
 333      this.string = string;
 334      this.tail = string;
 335      this.pos = 0;
 336    }
 337  
 338    /**
 339     * Returns `true` if the tail is empty (end of string).
 340     */
 341    Scanner.prototype.eos = function eos () {
 342      return this.tail === '';
 343    };
 344  
 345    /**
 346     * Tries to match the given regular expression at the current position.
 347     * Returns the matched text if it can match, the empty string otherwise.
 348     */
 349    Scanner.prototype.scan = function scan (re) {
 350      var match = this.tail.match(re);
 351  
 352      if (!match || match.index !== 0)
 353        return '';
 354  
 355      var string = match[0];
 356  
 357      this.tail = this.tail.substring(string.length);
 358      this.pos += string.length;
 359  
 360      return string;
 361    };
 362  
 363    /**
 364     * Skips all text until the given regular expression can be matched. Returns
 365     * the skipped string, which is the entire tail if no match can be made.
 366     */
 367    Scanner.prototype.scanUntil = function scanUntil (re) {
 368      var index = this.tail.search(re), match;
 369  
 370      switch (index) {
 371        case -1:
 372          match = this.tail;
 373          this.tail = '';
 374          break;
 375        case 0:
 376          match = '';
 377          break;
 378        default:
 379          match = this.tail.substring(0, index);
 380          this.tail = this.tail.substring(index);
 381      }
 382  
 383      this.pos += match.length;
 384  
 385      return match;
 386    };
 387  
 388    /**
 389     * Represents a rendering context by wrapping a view object and
 390     * maintaining a reference to the parent context.
 391     */
 392    function Context (view, parentContext) {
 393      this.view = view;
 394      this.blocks = {};
 395      this.cache = { '.': this.view };
 396      this.parent = parentContext;
 397    }
 398  
 399    /**
 400     * Creates a new context using the given view with this context
 401     * as the parent.
 402     */
 403    Context.prototype.push = function push (view) {
 404      return new Context(view, this);
 405    };
 406  
 407    /**
 408     * Set a value in the current block context.
 409     */
 410    Context.prototype.setBlockVar = function set (name, value) {
 411      var blocks = this.blocks;
 412  
 413      blocks[name] = value;
 414  
 415      return value;
 416    };
 417  
 418    /**
 419     * Clear all current block vars.
 420     */
 421    Context.prototype.clearBlockVars = function clearBlockVars () {
 422      this.blocks = {};
 423    };
 424  
 425    /**
 426     * Get a value only from the current block context.
 427     */
 428    Context.prototype.getBlockVar = function getBlockVar (name) {
 429      var blocks = this.blocks;
 430  
 431      var value;
 432      if (blocks.hasOwnProperty(name)) {
 433        value = blocks[name];
 434      } else {
 435        if (this.parent) {
 436          value = this.parent.getBlockVar(name);
 437        }
 438      }
 439      // Can return undefined.
 440      return value;
 441    };
 442  
 443    /**
 444     * Returns the value of the given name in this context, traversing
 445     * up the context hierarchy if the value is absent in this context's view.
 446     */
 447    Context.prototype.lookup = function lookup (name) {
 448      var cache = this.cache;
 449  
 450      var value;
 451      if (cache.hasOwnProperty(name)) {
 452        value = cache[name];
 453      } else {
 454        var context = this, names, index, lookupHit = false;
 455  
 456        while (context) {
 457          if (name.indexOf('.') > 0) {
 458            value = context.view;
 459            names = name.split('.');
 460            index = 0;
 461  
 462            /**
 463             * Using the dot notion path in `name`, we descend through the
 464             * nested objects.
 465             *
 466             * To be certain that the lookup has been successful, we have to
 467             * check if the last object in the path actually has the property
 468             * we are looking for. We store the result in `lookupHit`.
 469             *
 470             * This is specially necessary for when the value has been set to
 471             * `undefined` and we want to avoid looking up parent contexts.
 472             **/
 473            while (value != null && index < names.length) {
 474              if (index === names.length - 1)
 475                lookupHit = hasProperty(value, names[index]);
 476  
 477              value = value[names[index++]];
 478            }
 479          } else {
 480            value = context.view[name];
 481            lookupHit = hasProperty(context.view, name);
 482          }
 483  
 484          if (lookupHit)
 485            break;
 486  
 487          context = context.parent;
 488        }
 489  
 490        cache[name] = value;
 491      }
 492  
 493      if (isFunction(value))
 494        value = value.call(this.view);
 495  
 496      return value;
 497    };
 498  
 499    /**
 500     * A Writer knows how to take a stream of tokens and render them to a
 501     * string, given a context. It also maintains a cache of templates to
 502     * avoid the need to parse the same template twice.
 503     */
 504    function Writer () {
 505      this.cache = {};
 506    }
 507  
 508    /**
 509     * Clears all cached templates in this writer.
 510     */
 511    Writer.prototype.clearCache = function clearCache () {
 512      this.cache = {};
 513    };
 514  
 515    /**
 516     * Parses and caches the given `template` and returns the array of tokens
 517     * that is generated from the parse.
 518     */
 519    Writer.prototype.parse = function parse (template, tags) {
 520      var cache = this.cache;
 521      var tokens = cache[template];
 522  
 523      if (tokens == null)
 524        tokens = cache[template] = parseTemplate(template, tags);
 525  
 526      return tokens;
 527    };
 528  
 529    /**
 530     * High-level method that is used to render the given `template` with
 531     * the given `view`.
 532     *
 533     * The optional `partials` argument may be an object that contains the
 534     * names and templates of partials that are used in the template. It may
 535     * also be a function that is used to load partial templates on the fly
 536     * that takes a single argument: the name of the partial.
 537     */
 538    Writer.prototype.render = function render (template, view, partials) {
 539      var tokens = this.parse(template);
 540      var context = (view instanceof Context) ? view : new Context(view);
 541      return this.renderTokens(tokens, context, partials, template);
 542    };
 543  
 544    /**
 545     * Low-level method that renders the given array of `tokens` using
 546     * the given `context` and `partials`.
 547     *
 548     * Note: The `originalTemplate` is only ever used to extract the portion
 549     * of the original template that was contained in a higher-order section.
 550     * If the template doesn't use higher-order sections, this argument may
 551     * be omitted.
 552     */
 553    Writer.prototype.renderTokens = function renderTokens (tokens, context, partials, originalTemplate) {
 554      var buffer = '';
 555  
 556      var token, symbol, value;
 557      for (var i = 0, numTokens = tokens.length; i < numTokens; ++i) {
 558        value = undefined;
 559        token = tokens[i];
 560        symbol = token[0];
 561  
 562        if (symbol === '#') value = this.renderSection(token, context, partials, originalTemplate);
 563        else if (symbol === '^') value = this.renderInverted(token, context, partials, originalTemplate);
 564        else if (symbol === '>') value = this.renderPartial(token, context, partials, originalTemplate);
 565        else if (symbol === '<') value = this.renderBlock(token, context, partials, originalTemplate);
 566        else if (symbol === '$') value = this.renderBlockVariable(token, context, partials, originalTemplate);
 567        else if (symbol === '&') value = this.unescapedValue(token, context);
 568        else if (symbol === 'name') value = this.escapedValue(token, context);
 569        else if (symbol === 'text') value = this.rawValue(token);
 570  
 571        if (value !== undefined)
 572          buffer += value;
 573      }
 574  
 575      return buffer;
 576    };
 577  
 578    Writer.prototype.renderSection = function renderSection (token, context, partials, originalTemplate) {
 579      var self = this;
 580      var buffer = '';
 581      var value = context.lookup(token[1]);
 582  
 583      // This function is used to render an arbitrary template
 584      // in the current context by higher-order sections.
 585      function subRender (template) {
 586        return self.render(template, context, partials);
 587      }
 588  
 589      if (!value) return;
 590  
 591      if (isArray(value)) {
 592        for (var j = 0, valueLength = value.length; j < valueLength; ++j) {
 593          buffer += this.renderTokens(token[4], context.push(value[j]), partials, originalTemplate);
 594        }
 595      } else if (typeof value === 'object' || typeof value === 'string' || typeof value === 'number') {
 596        buffer += this.renderTokens(token[4], context.push(value), partials, originalTemplate);
 597      } else if (isFunction(value)) {
 598        if (typeof originalTemplate !== 'string')
 599          throw new Error('Cannot use higher-order sections without the original template');
 600  
 601        // Extract the portion of the original template that the section contains.
 602        value = value.call(context.view, originalTemplate.slice(token[3], token[5]), subRender);
 603  
 604        if (value != null)
 605          buffer += value;
 606      } else {
 607        buffer += this.renderTokens(token[4], context, partials, originalTemplate);
 608      }
 609      return buffer;
 610    };
 611  
 612    Writer.prototype.renderInverted = function renderInverted (token, context, partials, originalTemplate) {
 613      var value = context.lookup(token[1]);
 614  
 615      // Use JavaScript's definition of falsy. Include empty arrays.
 616      // See https://github.com/janl/mustache.js/issues/186
 617      if (!value || (isArray(value) && value.length === 0))
 618        return this.renderTokens(token[4], context, partials, originalTemplate);
 619    };
 620  
 621    Writer.prototype.renderPartial = function renderPartial (token, context, partials) {
 622      if (!partials) return;
 623  
 624      var value = isFunction(partials) ? partials(token[1]) : partials[token[1]];
 625      if (value != null)
 626        return this.renderTokens(this.parse(value), context, partials, value);
 627    };
 628  
 629    Writer.prototype.renderBlock = function renderBlock (token, context, partials, originalTemplate) {
 630      if (!partials) return;
 631  
 632      var value = isFunction(partials) ? partials(token[1]) : partials[token[1]];
 633      if (value != null)
 634        // Ignore any wrongly set block vars before we started.
 635        context.clearBlockVars();
 636        // We are only rendering to record the default block variables.
 637        this.renderTokens(token[4], context, partials, originalTemplate);
 638        // Now we render and return the result.
 639        var result = this.renderTokens(this.parse(value), context, partials, value);
 640        // Don't leak the block variables outside this include.
 641        context.clearBlockVars();
 642        return result;
 643    };
 644  
 645    Writer.prototype.renderBlockVariable = function renderBlockVariable (token, context, partials, originalTemplate) {
 646      var value = token[1];
 647  
 648      var exists = context.getBlockVar(value);
 649      if (!exists) {
 650        context.setBlockVar(value, originalTemplate.slice(token[3], token[5]));
 651        return this.renderTokens(token[4], context, partials, originalTemplate);
 652      } else {
 653        return this.renderTokens(this.parse(exists), context, partials, exists);
 654      }
 655    };
 656  
 657    Writer.prototype.unescapedValue = function unescapedValue (token, context) {
 658      var value = context.lookup(token[1]);
 659      if (value != null)
 660        return value;
 661    };
 662  
 663    Writer.prototype.escapedValue = function escapedValue (token, context) {
 664      var value = context.lookup(token[1]);
 665      if (value != null)
 666        return mustache.escape(value);
 667    };
 668  
 669    Writer.prototype.rawValue = function rawValue (token) {
 670      return token[1];
 671    };
 672  
 673    mustache.name = 'mustache.js';
 674    mustache.version = '2.2.1';
 675    mustache.tags = [ '{{', '}}' ];
 676  
 677    // All high-level mustache.* functions use this writer.
 678    var defaultWriter = new Writer();
 679  
 680    /**
 681     * Clears all cached templates in the default writer.
 682     */
 683    mustache.clearCache = function clearCache () {
 684      return defaultWriter.clearCache();
 685    };
 686  
 687    /**
 688     * Parses and caches the given template in the default writer and returns the
 689     * array of tokens it contains. Doing this ahead of time avoids the need to
 690     * parse templates on the fly as they are rendered.
 691     */
 692    mustache.parse = function parse (template, tags) {
 693      return defaultWriter.parse(template, tags);
 694    };
 695  
 696    /**
 697     * Renders the `template` with the given `view` and `partials` using the
 698     * default writer.
 699     */
 700    mustache.render = function render (template, view, partials) {
 701      if (typeof template !== 'string') {
 702        throw new TypeError('Invalid template! Template should be a "string" ' +
 703                            'but "' + typeStr(template) + '" was given as the first ' +
 704                            'argument for mustache#render(template, view, partials)');
 705      }
 706  
 707      return defaultWriter.render(template, view, partials);
 708    };
 709  
 710    // This is here for backwards compatibility with 0.4.x.,
 711    /*eslint-disable */ // eslint wants camel cased function name
 712    mustache.to_html = function to_html (template, view, partials, send) {
 713      /*eslint-enable*/
 714  
 715      var result = mustache.render(template, view, partials);
 716  
 717      if (isFunction(send)) {
 718        send(result);
 719      } else {
 720        return result;
 721      }
 722    };
 723  
 724    // Export the escaping function so that the user may override it.
 725    // See https://github.com/janl/mustache.js/issues/244
 726    mustache.escape = escapeHtml;
 727  
 728    // Export these mainly for testing, but also for advanced usage.
 729    mustache.Scanner = Scanner;
 730    mustache.Context = Context;
 731    mustache.Writer = Writer;
 732  
 733  }));
 734  /* jshint ignore:end */