text: // The MIT License
  //
  // Copyright (c) 2013 Tim Perry
  //
  // Permission is hereby granted, free of charge, to any person obtaining
  // a copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to
  // permit persons to whom the Software is furnished to do so, subject to
  // the following conditions:
  //
  // The above copyright notice and this permission notice shall be
  // included in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  //
  
  // Description of import into Moodle:
  // Download from https://github.com/pimterry/loglevel/dist
  // Copy loglevel.js into lib/amd/src/ in Moodle folder.
  // Add the license as a comment to the file and these instructions.
  
  /*
   * loglevel - https://github.com/pimterry/loglevel
   *
   * Copyright (c) 2013 Tim Perry
   * Licensed under the MIT license.
   */
  /*! loglevel - v1.5.1 - https://github.com/pimterry/loglevel - (c) 2017 Tim Perry - licensed MIT */
  (function (root, definition) {
      "use strict";
      if (typeof define === 'function' && define.amd) {
          define(definition);
      } else if (typeof module === 'object' && module.exports) {
          module.exports = definition();
      } else {
          root.log = definition();
      }
  }(this, function () {
      "use strict";
  
      // Slightly dubious tricks to cut down minimized file size
      var noop = function() {};
      var undefinedType = "undefined";
  
      var logMethods = [
          "trace",
          "debug",
          "info",
          "warn",
          "error"
      ];
  
      // Cross-browser bind equivalent that works at least back to IE6
      function bindMethod(obj, methodName) {
          var method = obj[methodName];
          if (typeof method.bind === 'function') {
              return method.bind(obj);
          } else {
              try {
                  return Function.prototype.bind.call(method, obj);
              } catch (e) {
                  // Missing bind shim or IE8 + Modernizr, fallback to wrapping
                  return function() {
                      return Function.prototype.apply.apply(method, [obj, arguments]);
                  };
              }
          }
      }
  
      // Build the best logging method possible for this env
      // Wherever possible we want to bind, not wrap, to preserve stack traces
      function realMethod(methodName) {
          if (methodName === 'debug') {
              methodName = 'log';
          }
  
          if (typeof console === undefinedType) {
              return false; // No method possible, for now - fixed later by enableLoggingWhenConsoleArrives
          } else if (console[methodName] !== undefined) {
              return bindMethod(console, methodName);
          } else if (console.log !== undefined) {
              return bindMethod(console, 'log');
          } else {
              return noop;
          }
      }
  
      // These private functions always need `this` to be set properly
  
      function replaceLoggingMethods(level, loggerName) {
          /*jshint validthis:true */
          for (var i = 0; i < logMethods.length; i++) {
              var methodName = logMethods[i];
              this[methodName] = (i < level) ?
                  noop :
                  this.methodFactory(methodName, level, loggerName);
          }
  
          // Define log.log as an alias for log.debug
          this.log = this.debug;
      }
  
      // In old IE versions, the console isn't present until you first open it.
      // We build realMethod() replacements here that regenerate logging methods
      function enableLoggingWhenConsoleArrives(methodName, level, loggerName) {
          return function () {
              if (typeof console !== undefinedType) {
                  replaceLoggingMethods.call(this, level, loggerName);
                  this[methodName].apply(this, arguments);
              }
          };
      }
  
      // By default, we use closely bound real methods wherever possible, and
      // otherwise we wait for a console to appear, and then try again.
      function defaultMethodFactory(methodName, level, loggerName) {
          /*jshint validthis:true */
          return realMethod(methodName) ||
                 enableLoggingWhenConsoleArrives.apply(this, arguments);
      }
  
      function Logger(name, defaultLevel, factory) {
        var self = this;
        var currentLevel;
        var storageKey = "loglevel";
        if (name) {
          storageKey += ":" + name;
        }
  
        function persistLevelIfPossible(levelNum) {
            var levelName = (logMethods[levelNum] || 'silent').toUpperCase();
  
            if (typeof window === undefinedType) return;
  
            // Use localStorage if available
            try {
                window.localStorage[storageKey] = levelName;
                return;
            } catch (ignore) {}
  
            // Use session cookie as fallback
            try {
                window.document.cookie =
                  encodeURIComponent(storageKey) + "=" + levelName + ";";
            } catch (ignore) {}
        }
  
        function getPersistedLevel() {
            var storedLevel;
  
            if (typeof window === undefinedType) return;
  
            try {
                storedLevel = window.localStorage[storageKey];
            } catch (ignore) {}
  
            // Fallback to cookies if local storage gives us nothing
            if (typeof storedLevel === undefinedType) {
                try {
                    var cookie = window.document.cookie;
                    var location = cookie.indexOf(
                        encodeURIComponent(storageKey) + "=");
                    if (location !== -1) {
                        storedLevel = /^([^;]+)/.exec(cookie.slice(location))[1];
                    }
                } catch (ignore) {}
            }
  
            // If the stored level is not valid, treat it as if nothing was stored.
            if (self.levels[storedLevel] === undefined) {
                storedLevel = undefined;
            }
  
            return storedLevel;
        }
  
        /*
         *
         * Public logger API - see https://github.com/pimterry/loglevel for details
         *
         */
  
        self.levels = { "TRACE": 0, "DEBUG": 1, "INFO": 2, "WARN": 3,
            "ERROR": 4, "SILENT": 5};
  
        self.methodFactory = factory || defaultMethodFactory;
  
        self.getLevel = function () {
            return currentLevel;
        };
  
        self.setLevel = function (level, persist) {
            if (typeof level === "string" && self.levels[level.toUpperCase()] !== undefined) {
                level = self.levels[level.toUpperCase()];
            }
            if (typeof level === "number" && level >= 0 && level <= self.levels.SILENT) {
                currentLevel = level;
                if (persist !== false) {  // defaults to true
                    persistLevelIfPossible(level);
                }
                replaceLoggingMethods.call(self, level, name);
                if (typeof console === undefinedType && level < self.levels.SILENT) {
                    return "No console available for logging";
                }
            } else {
                throw "log.setLevel() called with invalid level: " + level;
            }
        };
  
        self.setDefaultLevel = function (level) {
            if (!getPersistedLevel()) {
                self.setLevel(level, false);
            }
        };
  
        self.enableAll = function(persist) {
            self.setLevel(self.levels.TRACE, persist);
        };
  
        self.disableAll = function(persist) {
            self.setLevel(self.levels.SILENT, persist);
        };
  
        // Initialize with the right level
        var initialLevel = getPersistedLevel();
        if (initialLevel == null) {
            initialLevel = defaultLevel == null ? "WARN" : defaultLevel;
        }
        self.setLevel(initialLevel, false);
      }
  
      /*
       *
       * Top-level API
       *
       */
  
      var defaultLogger = new Logger();
  
      var _loggersByName = {};
      defaultLogger.getLogger = function getLogger(name) {
          if (typeof name !== "string" || name === "") {
            throw new TypeError("You must supply a name when creating a logger.");
          }
  
          var logger = _loggersByName[name];
          if (!logger) {
            logger = _loggersByName[name] = new Logger(
              name, defaultLogger.getLevel(), defaultLogger.methodFactory);
          }
          return logger;
      };
  
      // Grab the current global log variable in case of overwrite
      var _log = (typeof window !== undefinedType) ? window.log : undefined;
      defaultLogger.noConflict = function() {
          if (typeof window !== undefinedType &&
                 window.log === defaultLogger) {
              window.log = _log;
          }
  
          return defaultLogger;
      };
  
      return defaultLogger;
  }));
  