Updated the Survey.

node_modules/ejs/lib/ejs.js

@@ -0,0 +1,938 @@
+/*
+ * EJS Embedded JavaScript templates
+ * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+*/
+
+'use strict';
+
+/**
+ * @file Embedded JavaScript templating engine. {@link http://ejs.co}
+ * @author Matthew Eernisse <mde@fleegix.org>
+ * @author Tiancheng "Timothy" Gu <timothygu99@gmail.com>
+ * @project EJS
+ * @license {@link http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0}
+ */
+
+/**
+ * EJS internal functions.
+ *
+ * Technically this "module" lies in the same file as {@link module:ejs}, for
+ * the sake of organization all the private functions re grouped into this
+ * module.
+ *
+ * @module ejs-internal
+ * @private
+ */
+
+/**
+ * Embedded JavaScript templating engine.
+ *
+ * @module ejs
+ * @public
+ */
+
+var fs = require('fs');
+var path = require('path');
+var utils = require('./utils');
+
+var scopeOptionWarned = false;
+/** @type {string} */
+var _VERSION_STRING = require('../package.json').version;
+var _DEFAULT_OPEN_DELIMITER = '<';
+var _DEFAULT_CLOSE_DELIMITER = '>';
+var _DEFAULT_DELIMITER = '%';
+var _DEFAULT_LOCALS_NAME = 'locals';
+var _NAME = 'ejs';
+var _REGEX_STRING = '(<%%|%%>|<%=|<%-|<%_|<%#|<%|%>|-%>|_%>)';
+var _OPTS_PASSABLE_WITH_DATA = ['delimiter', 'scope', 'context', 'debug', 'compileDebug',
+  'client', '_with', 'rmWhitespace', 'strict', 'filename', 'async'];
+// We don't allow 'cache' option to be passed in the data obj for
+// the normal `render` call, but this is where Express 2 & 3 put it
+// so we make an exception for `renderFile`
+var _OPTS_PASSABLE_WITH_DATA_EXPRESS = _OPTS_PASSABLE_WITH_DATA.concat('cache');
+var _BOM = /^\uFEFF/;
+
+/**
+ * EJS template function cache. This can be a LRU object from lru-cache NPM
+ * module. By default, it is {@link module:utils.cache}, a simple in-process
+ * cache that grows continuously.
+ *
+ * @type {Cache}
+ */
+
+exports.cache = utils.cache;
+
+/**
+ * Custom file loader. Useful for template preprocessing or restricting access
+ * to a certain part of the filesystem.
+ *
+ * @type {fileLoader}
+ */
+
+exports.fileLoader = fs.readFileSync;
+
+/**
+ * Name of the object containing the locals.
+ *
+ * This variable is overridden by {@link Options}`.localsName` if it is not
+ * `undefined`.
+ *
+ * @type {String}
+ * @public
+ */
+
+exports.localsName = _DEFAULT_LOCALS_NAME;
+
+/**
+ * Promise implementation -- defaults to the native implementation if available
+ * This is mostly just for testability
+ *
+ * @type {PromiseConstructorLike}
+ * @public
+ */
+
+exports.promiseImpl = (new Function('return this;'))().Promise;
+
+/**
+ * Get the path to the included file from the parent file path and the
+ * specified path.
+ *
+ * @param {String}  name     specified path
+ * @param {String}  filename parent file path
+ * @param {Boolean} [isDir=false] whether the parent file path is a directory
+ * @return {String}
+ */
+exports.resolveInclude = function(name, filename, isDir) {
+  var dirname = path.dirname;
+  var extname = path.extname;
+  var resolve = path.resolve;
+  var includePath = resolve(isDir ? filename : dirname(filename), name);
+  var ext = extname(name);
+  if (!ext) {
+    includePath += '.ejs';
+  }
+  return includePath;
+};
+
+/**
+ * Try to resolve file path on multiple directories
+ *
+ * @param  {String}        name  specified path
+ * @param  {Array<String>} paths list of possible parent directory paths
+ * @return {String}
+ */
+function resolvePaths(name, paths) {
+  var filePath;
+  if (paths.some(function (v) {
+    filePath = exports.resolveInclude(name, v, true);
+    return fs.existsSync(filePath);
+  })) {
+    return filePath;
+  }
+}
+
+/**
+ * Get the path to the included file by Options
+ *
+ * @param  {String}  path    specified path
+ * @param  {Options} options compilation options
+ * @return {String}
+ */
+function getIncludePath(path, options) {
+  var includePath;
+  var filePath;
+  var views = options.views;
+  var match = /^[A-Za-z]+:\\|^\//.exec(path);
+
+  // Abs path
+  if (match && match.length) {
+    path = path.replace(/^\/*/, '');
+    if (Array.isArray(options.root)) {
+      includePath = resolvePaths(path, options.root);
+    } else {
+      includePath = exports.resolveInclude(path, options.root || '/', true);
+    }
+  }
+  // Relative paths
+  else {
+    // Look relative to a passed filename first
+    if (options.filename) {
+      filePath = exports.resolveInclude(path, options.filename);
+      if (fs.existsSync(filePath)) {
+        includePath = filePath;
+      }
+    }
+    // Then look in any views directories
+    if (!includePath && Array.isArray(views)) {
+      includePath = resolvePaths(path, views);
+    }
+    if (!includePath && typeof options.includer !== 'function') {
+      throw new Error('Could not find the include file "' +
+          options.escapeFunction(path) + '"');
+    }
+  }
+  return includePath;
+}
+
+/**
+ * Get the template from a string or a file, either compiled on-the-fly or
+ * read from cache (if enabled), and cache the template if needed.
+ *
+ * If `template` is not set, the file specified in `options.filename` will be
+ * read.
+ *
+ * If `options.cache` is true, this function reads the file from
+ * `options.filename` so it must be set prior to calling this function.
+ *
+ * @memberof module:ejs-internal
+ * @param {Options} options   compilation options
+ * @param {String} [template] template source
+ * @return {(TemplateFunction|ClientFunction)}
+ * Depending on the value of `options.client`, either type might be returned.
+ * @static
+ */
+
+function handleCache(options, template) {
+  var func;
+  var filename = options.filename;
+  var hasTemplate = arguments.length > 1;
+
+  if (options.cache) {
+    if (!filename) {
+      throw new Error('cache option requires a filename');
+    }
+    func = exports.cache.get(filename);
+    if (func) {
+      return func;
+    }
+    if (!hasTemplate) {
+      template = fileLoader(filename).toString().replace(_BOM, '');
+    }
+  }
+  else if (!hasTemplate) {
+    // istanbul ignore if: should not happen at all
+    if (!filename) {
+      throw new Error('Internal EJS error: no file name or template '
+                    + 'provided');
+    }
+    template = fileLoader(filename).toString().replace(_BOM, '');
+  }
+  func = exports.compile(template, options);
+  if (options.cache) {
+    exports.cache.set(filename, func);
+  }
+  return func;
+}
+
+/**
+ * Try calling handleCache with the given options and data and call the
+ * callback with the result. If an error occurs, call the callback with
+ * the error. Used by renderFile().
+ *
+ * @memberof module:ejs-internal
+ * @param {Options} options    compilation options
+ * @param {Object} data        template data
+ * @param {RenderFileCallback} cb callback
+ * @static
+ */
+
+function tryHandleCache(options, data, cb) {
+  var result;
+  if (!cb) {
+    if (typeof exports.promiseImpl == 'function') {
+      return new exports.promiseImpl(function (resolve, reject) {
+        try {
+          result = handleCache(options)(data);
+          resolve(result);
+        }
+        catch (err) {
+          reject(err);
+        }
+      });
+    }
+    else {
+      throw new Error('Please provide a callback function');
+    }
+  }
+  else {
+    try {
+      result = handleCache(options)(data);
+    }
+    catch (err) {
+      return cb(err);
+    }
+
+    cb(null, result);
+  }
+}
+
+/**
+ * fileLoader is independent
+ *
+ * @param {String} filePath ejs file path.
+ * @return {String} The contents of the specified file.
+ * @static
+ */
+
+function fileLoader(filePath){
+  return exports.fileLoader(filePath);
+}
+
+/**
+ * Get the template function.
+ *
+ * If `options.cache` is `true`, then the template is cached.
+ *
+ * @memberof module:ejs-internal
+ * @param {String}  path    path for the specified file
+ * @param {Options} options compilation options
+ * @return {(TemplateFunction|ClientFunction)}
+ * Depending on the value of `options.client`, either type might be returned
+ * @static
+ */
+
+function includeFile(path, options) {
+  var opts = utils.shallowCopy({}, options);
+  opts.filename = getIncludePath(path, opts);
+  if (typeof options.includer === 'function') {
+    var includerResult = options.includer(path, opts.filename);
+    if (includerResult) {
+      if (includerResult.filename) {
+        opts.filename = includerResult.filename;
+      }
+      if (includerResult.template) {
+        return handleCache(opts, includerResult.template);
+      }
+    }
+  }
+  return handleCache(opts);
+}
+
+/**
+ * Re-throw the given `err` in context to the `str` of ejs, `filename`, and
+ * `lineno`.
+ *
+ * @implements {RethrowCallback}
+ * @memberof module:ejs-internal
+ * @param {Error}  err      Error object
+ * @param {String} str      EJS source
+ * @param {String} flnm     file name of the EJS file
+ * @param {Number} lineno   line number of the error
+ * @param {EscapeCallback} esc
+ * @static
+ */
+
+function rethrow(err, str, flnm, lineno, esc) {
+  var lines = str.split('\n');
+  var start = Math.max(lineno - 3, 0);
+  var end = Math.min(lines.length, lineno + 3);
+  var filename = esc(flnm);
+  // Error context
+  var context = lines.slice(start, end).map(function (line, i){
+    var curr = i + start + 1;
+    return (curr == lineno ? ' >> ' : '    ')
+      + curr
+      + '| '
+      + line;
+  }).join('\n');
+
+  // Alter exception message
+  err.path = filename;
+  err.message = (filename || 'ejs') + ':'
+    + lineno + '\n'
+    + context + '\n\n'
+    + err.message;
+
+  throw err;
+}
+
+function stripSemi(str){
+  return str.replace(/;(\s*$)/, '$1');
+}
+
+/**
+ * Compile the given `str` of ejs into a template function.
+ *
+ * @param {String}  template EJS template
+ *
+ * @param {Options} [opts] compilation options
+ *
+ * @return {(TemplateFunction|ClientFunction)}
+ * Depending on the value of `opts.client`, either type might be returned.
+ * Note that the return type of the function also depends on the value of `opts.async`.
+ * @public
+ */
+
+exports.compile = function compile(template, opts) {
+  var templ;
+
+  // v1 compat
+  // 'scope' is 'context'
+  // FIXME: Remove this in a future version
+  if (opts && opts.scope) {
+    if (!scopeOptionWarned){
+      console.warn('`scope` option is deprecated and will be removed in EJS 3');
+      scopeOptionWarned = true;
+    }
+    if (!opts.context) {
+      opts.context = opts.scope;
+    }
+    delete opts.scope;
+  }
+  templ = new Template(template, opts);
+  return templ.compile();
+};
+
+/**
+ * Render the given `template` of ejs.
+ *
+ * If you would like to include options but not data, you need to explicitly
+ * call this function with `data` being an empty object or `null`.
+ *
+ * @param {String}   template EJS template
+ * @param {Object}  [data={}] template data
+ * @param {Options} [opts={}] compilation and rendering options
+ * @return {(String|Promise<String>)}
+ * Return value type depends on `opts.async`.
+ * @public
+ */
+
+exports.render = function (template, d, o) {
+  var data = d || {};
+  var opts = o || {};
+
+  // No options object -- if there are optiony names
+  // in the data, copy them to options
+  if (arguments.length == 2) {
+    utils.shallowCopyFromList(opts, data, _OPTS_PASSABLE_WITH_DATA);
+  }
+
+  return handleCache(opts, template)(data);
+};
+
+/**
+ * Render an EJS file at the given `path` and callback `cb(err, str)`.
+ *
+ * If you would like to include options but not data, you need to explicitly
+ * call this function with `data` being an empty object or `null`.
+ *
+ * @param {String}             path     path to the EJS file
+ * @param {Object}            [data={}] template data
+ * @param {Options}           [opts={}] compilation and rendering options
+ * @param {RenderFileCallback} cb callback
+ * @public
+ */
+
+exports.renderFile = function () {
+  var args = Array.prototype.slice.call(arguments);
+  var filename = args.shift();
+  var cb;
+  var opts = {filename: filename};
+  var data;
+  var viewOpts;
+
+  // Do we have a callback?
+  if (typeof arguments[arguments.length - 1] == 'function') {
+    cb = args.pop();
+  }
+  // Do we have data/opts?
+  if (args.length) {
+    // Should always have data obj
+    data = args.shift();
+    // Normal passed opts (data obj + opts obj)
+    if (args.length) {
+      // Use shallowCopy so we don't pollute passed in opts obj with new vals
+      utils.shallowCopy(opts, args.pop());
+    }
+    // Special casing for Express (settings + opts-in-data)
+    else {
+      // Express 3 and 4
+      if (data.settings) {
+        // Pull a few things from known locations
+        if (data.settings.views) {
+          opts.views = data.settings.views;
+        }
+        if (data.settings['view cache']) {
+          opts.cache = true;
+        }
+        // Undocumented after Express 2, but still usable, esp. for
+        // items that are unsafe to be passed along with data, like `root`
+        viewOpts = data.settings['view options'];
+        if (viewOpts) {
+          utils.shallowCopy(opts, viewOpts);
+        }
+      }
+      // Express 2 and lower, values set in app.locals, or people who just
+      // want to pass options in their data. NOTE: These values will override
+      // anything previously set in settings  or settings['view options']
+      utils.shallowCopyFromList(opts, data, _OPTS_PASSABLE_WITH_DATA_EXPRESS);
+    }
+    opts.filename = filename;
+  }
+  else {
+    data = {};
+  }
+
+  return tryHandleCache(opts, data, cb);
+};
+
+/**
+ * Clear intermediate JavaScript cache. Calls {@link Cache#reset}.
+ * @public
+ */
+
+/**
+ * EJS template class
+ * @public
+ */
+exports.Template = Template;
+
+exports.clearCache = function () {
+  exports.cache.reset();
+};
+
+function Template(text, opts) {
+  opts = opts || {};
+  var options = {};
+  this.templateText = text;
+  /** @type {string | null} */
+  this.mode = null;
+  this.truncate = false;
+  this.currentLine = 1;
+  this.source = '';
+  options.client = opts.client || false;
+  options.escapeFunction = opts.escape || opts.escapeFunction || utils.escapeXML;
+  options.compileDebug = opts.compileDebug !== false;
+  options.debug = !!opts.debug;
+  options.filename = opts.filename;
+  options.openDelimiter = opts.openDelimiter || exports.openDelimiter || _DEFAULT_OPEN_DELIMITER;
+  options.closeDelimiter = opts.closeDelimiter || exports.closeDelimiter || _DEFAULT_CLOSE_DELIMITER;
+  options.delimiter = opts.delimiter || exports.delimiter || _DEFAULT_DELIMITER;
+  options.strict = opts.strict || false;
+  options.context = opts.context;
+  options.cache = opts.cache || false;
+  options.rmWhitespace = opts.rmWhitespace;
+  options.root = opts.root;
+  options.includer = opts.includer;
+  options.outputFunctionName = opts.outputFunctionName;
+  options.localsName = opts.localsName || exports.localsName || _DEFAULT_LOCALS_NAME;
+  options.views = opts.views;
+  options.async = opts.async;
+  options.destructuredLocals = opts.destructuredLocals;
+  options.legacyInclude = typeof opts.legacyInclude != 'undefined' ? !!opts.legacyInclude : true;
+
+  if (options.strict) {
+    options._with = false;
+  }
+  else {
+    options._with = typeof opts._with != 'undefined' ? opts._with : true;
+  }
+
+  this.opts = options;
+
+  this.regex = this.createRegex();
+}
+
+Template.modes = {
+  EVAL: 'eval',
+  ESCAPED: 'escaped',
+  RAW: 'raw',
+  COMMENT: 'comment',
+  LITERAL: 'literal'
+};
+
+Template.prototype = {
+  createRegex: function () {
+    var str = _REGEX_STRING;
+    var delim = utils.escapeRegExpChars(this.opts.delimiter);
+    var open = utils.escapeRegExpChars(this.opts.openDelimiter);
+    var close = utils.escapeRegExpChars(this.opts.closeDelimiter);
+    str = str.replace(/%/g, delim)
+      .replace(/</g, open)
+      .replace(/>/g, close);
+    return new RegExp(str);
+  },
+
+  compile: function () {
+    /** @type {string} */
+    var src;
+    /** @type {ClientFunction} */
+    var fn;
+    var opts = this.opts;
+    var prepended = '';
+    var appended = '';
+    /** @type {EscapeCallback} */
+    var escapeFn = opts.escapeFunction;
+    /** @type {FunctionConstructor} */
+    var ctor;
+
+    if (!this.source) {
+      this.generateSource();
+      prepended +=
+        '  var __output = "";\n' +
+        '  function __append(s) { if (s !== undefined && s !== null) __output += s }\n';
+      if (opts.outputFunctionName) {
+        prepended += '  var ' + opts.outputFunctionName + ' = __append;' + '\n';
+      }
+      if (opts.destructuredLocals && opts.destructuredLocals.length) {
+        var destructuring = '  var __locals = (' + opts.localsName + ' || {}),\n';
+        for (var i = 0; i < opts.destructuredLocals.length; i++) {
+          var name = opts.destructuredLocals[i];
+          if (i > 0) {
+            destructuring += ',\n  ';
+          }
+          destructuring += name + ' = __locals.' + name;
+        }
+        prepended += destructuring + ';\n';
+      }
+      if (opts._with !== false) {
+        prepended +=  '  with (' + opts.localsName + ' || {}) {' + '\n';
+        appended += '  }' + '\n';
+      }
+      appended += '  return __output;' + '\n';
+      this.source = prepended + this.source + appended;
+    }
+
+    if (opts.compileDebug) {
+      src = 'var __line = 1' + '\n'
+        + '  , __lines = ' + JSON.stringify(this.templateText) + '\n'
+        + '  , __filename = ' + (opts.filename ?
+        JSON.stringify(opts.filename) : 'undefined') + ';' + '\n'
+        + 'try {' + '\n'
+        + this.source
+        + '} catch (e) {' + '\n'
+        + '  rethrow(e, __lines, __filename, __line, escapeFn);' + '\n'
+        + '}' + '\n';
+    }
+    else {
+      src = this.source;
+    }
+
+    if (opts.client) {
+      src = 'escapeFn = escapeFn || ' + escapeFn.toString() + ';' + '\n' + src;
+      if (opts.compileDebug) {
+        src = 'rethrow = rethrow || ' + rethrow.toString() + ';' + '\n' + src;
+      }
+    }
+
+    if (opts.strict) {
+      src = '"use strict";\n' + src;
+    }
+    if (opts.debug) {
+      console.log(src);
+    }
+    if (opts.compileDebug && opts.filename) {
+      src = src + '\n'
+        + '//# sourceURL=' + opts.filename + '\n';
+    }
+
+    try {
+      if (opts.async) {
+        // Have to use generated function for this, since in envs without support,
+        // it breaks in parsing
+        try {
+          ctor = (new Function('return (async function(){}).constructor;'))();
+        }
+        catch(e) {
+          if (e instanceof SyntaxError) {
+            throw new Error('This environment does not support async/await');
+          }
+          else {
+            throw e;
+          }
+        }
+      }
+      else {
+        ctor = Function;
+      }
+      fn = new ctor(opts.localsName + ', escapeFn, include, rethrow', src);
+    }
+    catch(e) {
+      // istanbul ignore else
+      if (e instanceof SyntaxError) {
+        if (opts.filename) {
+          e.message += ' in ' + opts.filename;
+        }
+        e.message += ' while compiling ejs\n\n';
+        e.message += 'If the above error is not helpful, you may want to try EJS-Lint:\n';
+        e.message += 'https://github.com/RyanZim/EJS-Lint';
+        if (!opts.async) {
+          e.message += '\n';
+          e.message += 'Or, if you meant to create an async function, pass `async: true` as an option.';
+        }
+      }
+      throw e;
+    }
+
+    // Return a callable function which will execute the function
+    // created by the source-code, with the passed data as locals
+    // Adds a local `include` function which allows full recursive include
+    var returnedFn = opts.client ? fn : function anonymous(data) {
+      var include = function (path, includeData) {
+        var d = utils.shallowCopy({}, data);
+        if (includeData) {
+          d = utils.shallowCopy(d, includeData);
+        }
+        return includeFile(path, opts)(d);
+      };
+      return fn.apply(opts.context, [data || {}, escapeFn, include, rethrow]);
+    };
+    if (opts.filename && typeof Object.defineProperty === 'function') {
+      var filename = opts.filename;
+      var basename = path.basename(filename, path.extname(filename));
+      try {
+        Object.defineProperty(returnedFn, 'name', {
+          value: basename,
+          writable: false,
+          enumerable: false,
+          configurable: true
+        });
+      } catch (e) {/* ignore */}
+    }
+    return returnedFn;
+  },
+
+  generateSource: function () {
+    var opts = this.opts;
+
+    if (opts.rmWhitespace) {
+      // Have to use two separate replace here as `^` and `$` operators don't
+      // work well with `\r` and empty lines don't work well with the `m` flag.
+      this.templateText =
+        this.templateText.replace(/[\r\n]+/g, '\n').replace(/^\s+|\s+$/gm, '');
+    }
+
+    // Slurp spaces and tabs before <%_ and after _%>
+    this.templateText =
+      this.templateText.replace(/[ \t]*<%_/gm, '<%_').replace(/_%>[ \t]*/gm, '_%>');
+
+    var self = this;
+    var matches = this.parseTemplateText();
+    var d = this.opts.delimiter;
+    var o = this.opts.openDelimiter;
+    var c = this.opts.closeDelimiter;
+
+    if (matches && matches.length) {
+      matches.forEach(function (line, index) {
+        var closing;
+        // If this is an opening tag, check for closing tags
+        // FIXME: May end up with some false positives here
+        // Better to store modes as k/v with openDelimiter + delimiter as key
+        // Then this can simply check against the map
+        if ( line.indexOf(o + d) === 0        // If it is a tag
+          && line.indexOf(o + d + d) !== 0) { // and is not escaped
+          closing = matches[index + 2];
+          if (!(closing == d + c || closing == '-' + d + c || closing == '_' + d + c)) {
+            throw new Error('Could not find matching close tag for "' + line + '".');
+          }
+        }
+        self.scanLine(line);
+      });
+    }
+
+  },
+
+  parseTemplateText: function () {
+    var str = this.templateText;
+    var pat = this.regex;
+    var result = pat.exec(str);
+    var arr = [];
+    var firstPos;
+
+    while (result) {
+      firstPos = result.index;
+
+      if (firstPos !== 0) {
+        arr.push(str.substring(0, firstPos));
+        str = str.slice(firstPos);
+      }
+
+      arr.push(result[0]);
+      str = str.slice(result[0].length);
+      result = pat.exec(str);
+    }
+
+    if (str) {
+      arr.push(str);
+    }
+
+    return arr;
+  },
+
+  _addOutput: function (line) {
+    if (this.truncate) {
+      // Only replace single leading linebreak in the line after
+      // -%> tag -- this is the single, trailing linebreak
+      // after the tag that the truncation mode replaces
+      // Handle Win / Unix / old Mac linebreaks -- do the \r\n
+      // combo first in the regex-or
+      line = line.replace(/^(?:\r\n|\r|\n)/, '');
+      this.truncate = false;
+    }
+    if (!line) {
+      return line;
+    }
+
+    // Preserve literal slashes
+    line = line.replace(/\\/g, '\\\\');
+
+    // Convert linebreaks
+    line = line.replace(/\n/g, '\\n');
+    line = line.replace(/\r/g, '\\r');
+
+    // Escape double-quotes
+    // - this will be the delimiter during execution
+    line = line.replace(/"/g, '\\"');
+    this.source += '    ; __append("' + line + '")' + '\n';
+  },
+
+  scanLine: function (line) {
+    var self = this;
+    var d = this.opts.delimiter;
+    var o = this.opts.openDelimiter;
+    var c = this.opts.closeDelimiter;
+    var newLineCount = 0;
+
+    newLineCount = (line.split('\n').length - 1);
+
+    switch (line) {
+    case o + d:
+    case o + d + '_':
+      this.mode = Template.modes.EVAL;
+      break;
+    case o + d + '=':
+      this.mode = Template.modes.ESCAPED;
+      break;
+    case o + d + '-':
+      this.mode = Template.modes.RAW;
+      break;
+    case o + d + '#':
+      this.mode = Template.modes.COMMENT;
+      break;
+    case o + d + d:
+      this.mode = Template.modes.LITERAL;
+      this.source += '    ; __append("' + line.replace(o + d + d, o + d) + '")' + '\n';
+      break;
+    case d + d + c:
+      this.mode = Template.modes.LITERAL;
+      this.source += '    ; __append("' + line.replace(d + d + c, d + c) + '")' + '\n';
+      break;
+    case d + c:
+    case '-' + d + c:
+    case '_' + d + c:
+      if (this.mode == Template.modes.LITERAL) {
+        this._addOutput(line);
+      }
+
+      this.mode = null;
+      this.truncate = line.indexOf('-') === 0 || line.indexOf('_') === 0;
+      break;
+    default:
+      // In script mode, depends on type of tag
+      if (this.mode) {
+        // If '//' is found without a line break, add a line break.
+        switch (this.mode) {
+        case Template.modes.EVAL:
+        case Template.modes.ESCAPED:
+        case Template.modes.RAW:
+          if (line.lastIndexOf('//') > line.lastIndexOf('\n')) {
+            line += '\n';
+          }
+        }
+        switch (this.mode) {
+        // Just executing code
+        case Template.modes.EVAL:
+          this.source += '    ; ' + line + '\n';
+          break;
+          // Exec, esc, and output
+        case Template.modes.ESCAPED:
+          this.source += '    ; __append(escapeFn(' + stripSemi(line) + '))' + '\n';
+          break;
+          // Exec and output
+        case Template.modes.RAW:
+          this.source += '    ; __append(' + stripSemi(line) + ')' + '\n';
+          break;
+        case Template.modes.COMMENT:
+          // Do nothing
+          break;
+          // Literal <%% mode, append as raw output
+        case Template.modes.LITERAL:
+          this._addOutput(line);
+          break;
+        }
+      }
+      // In string mode, just add the output
+      else {
+        this._addOutput(line);
+      }
+    }
+
+    if (self.opts.compileDebug && newLineCount) {
+      this.currentLine += newLineCount;
+      this.source += '    ; __line = ' + this.currentLine + '\n';
+    }
+  }
+};
+
+/**
+ * Escape characters reserved in XML.
+ *
+ * This is simply an export of {@link module:utils.escapeXML}.
+ *
+ * If `markup` is `undefined` or `null`, the empty string is returned.
+ *
+ * @param {String} markup Input string
+ * @return {String} Escaped string
+ * @public
+ * @func
+ * */
+exports.escapeXML = utils.escapeXML;
+
+/**
+ * Express.js support.
+ *
+ * This is an alias for {@link module:ejs.renderFile}, in order to support
+ * Express.js out-of-the-box.
+ *
+ * @func
+ */
+
+exports.__express = exports.renderFile;
+
+/**
+ * Version of EJS.
+ *
+ * @readonly
+ * @type {String}
+ * @public
+ */
+
+exports.VERSION = _VERSION_STRING;
+
+/**
+ * Name for detection of EJS.
+ *
+ * @readonly
+ * @type {String}
+ * @public
+ */
+
+exports.name = _NAME;
+
+/* istanbul ignore if */
+if (typeof window != 'undefined') {
+  window.ejs = exports;
+}

node_modules/ejs/lib/utils.js

@@ -0,0 +1,167 @@
+/*
+ * EJS Embedded JavaScript templates
+ * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+*/
+
+/**
+ * Private utility functions
+ * @module utils
+ * @private
+ */
+
+'use strict';
+
+var regExpChars = /[|\\{}()[\]^$+*?.]/g;
+
+/**
+ * Escape characters reserved in regular expressions.
+ *
+ * If `string` is `undefined` or `null`, the empty string is returned.
+ *
+ * @param {String} string Input string
+ * @return {String} Escaped string
+ * @static
+ * @private
+ */
+exports.escapeRegExpChars = function (string) {
+  // istanbul ignore if
+  if (!string) {
+    return '';
+  }
+  return String(string).replace(regExpChars, '\\$&');
+};
+
+var _ENCODE_HTML_RULES = {
+  '&': '&',
+  '<': '&lt;',
+  '>': '&gt;',
+  '"': '&#34;',
+  "'": '&#39;'
+};
+var _MATCH_HTML = /[&<>'"]/g;
+
+function encode_char(c) {
+  return _ENCODE_HTML_RULES[c] || c;
+}
+
+/**
+ * Stringified version of constants used by {@link module:utils.escapeXML}.
+ *
+ * It is used in the process of generating {@link ClientFunction}s.
+ *
+ * @readonly
+ * @type {String}
+ */
+
+var escapeFuncStr =
+  'var _ENCODE_HTML_RULES = {\n'
++ '      "&": "&amp;"\n'
++ '    , "<": "&lt;"\n'
++ '    , ">": "&gt;"\n'
++ '    , \'"\': "&#34;"\n'
++ '    , "\'": "&#39;"\n'
++ '    }\n'
++ '  , _MATCH_HTML = /[&<>\'"]/g;\n'
++ 'function encode_char(c) {\n'
++ '  return _ENCODE_HTML_RULES[c] || c;\n'
++ '};\n';
+
+/**
+ * Escape characters reserved in XML.
+ *
+ * If `markup` is `undefined` or `null`, the empty string is returned.
+ *
+ * @implements {EscapeCallback}
+ * @param {String} markup Input string
+ * @return {String} Escaped string
+ * @static
+ * @private
+ */
+
+exports.escapeXML = function (markup) {
+  return markup == undefined
+    ? ''
+    : String(markup)
+      .replace(_MATCH_HTML, encode_char);
+};
+exports.escapeXML.toString = function () {
+  return Function.prototype.toString.call(this) + ';\n' + escapeFuncStr;
+};
+
+/**
+ * Naive copy of properties from one object to another.
+ * Does not recurse into non-scalar properties
+ * Does not check to see if the property has a value before copying
+ *
+ * @param  {Object} to   Destination object
+ * @param  {Object} from Source object
+ * @return {Object}      Destination object
+ * @static
+ * @private
+ */
+exports.shallowCopy = function (to, from) {
+  from = from || {};
+  for (var p in from) {
+    to[p] = from[p];
+  }
+  return to;
+};
+
+/**
+ * Naive copy of a list of key names, from one object to another.
+ * Only copies property if it is actually defined
+ * Does not recurse into non-scalar properties
+ *
+ * @param  {Object} to   Destination object
+ * @param  {Object} from Source object
+ * @param  {Array} list List of properties to copy
+ * @return {Object}      Destination object
+ * @static
+ * @private
+ */
+exports.shallowCopyFromList = function (to, from, list) {
+  for (var i = 0; i < list.length; i++) {
+    var p = list[i];
+    if (typeof from[p] != 'undefined') {
+      to[p] = from[p];
+    }
+  }
+  return to;
+};
+
+/**
+ * Simple in-process cache implementation. Does not implement limits of any
+ * sort.
+ *
+ * @implements {Cache}
+ * @static
+ * @private
+ */
+exports.cache = {
+  _data: {},
+  set: function (key, val) {
+    this._data[key] = val;
+  },
+  get: function (key) {
+    return this._data[key];
+  },
+  remove: function (key) {
+    delete this._data[key];
+  },
+  reset: function () {
+    this._data = {};
+  }
+};