code: function loadjs(paths, arg1, arg2) {
  	      var bundleId, args; // bundleId (if string)
  
  	      if (arg1 && arg1.trim) bundleId = arg1; // args (default is {})
  
  	      args = (bundleId ? arg2 : arg1) || {}; // throw error if bundle is already defined
  
  	      if (bundleId) {
  	        if (bundleId in bundleIdCache) {
  	          throw "LoadJS";
  	        } else {
  	          bundleIdCache[bundleId] = true;
  	        }
  	      }
  
  	      function loadFn(resolve, reject) {
  	        loadFiles(paths, function (pathsNotFound) {
  	          // execute callbacks
  	          executeCallbacks(args, pathsNotFound); // resolve Promise
  
  	          if (resolve) {
  	            executeCallbacks({
  	              success: resolve,
  	              error: reject
  	            }, pathsNotFound);
  	          } // publish bundle load event
  
  
  	          publish(bundleId, pathsNotFound);
  	        }, args);
  	      }
  
  	      if (args.returnPromise) return new Promise(loadFn);else loadFn();
  	    }
docs: Initiate script load and register bundle.
  @param {(string|string[])} paths - The file paths
  @param {(string|Function|Object)} [arg1] - The (1) bundleId or (2) success
  callback or (3) object literal with success/error arguments, numRetries,
  etc.
  @param {(Function|Object)} [arg2] - The (1) success callback or (2) object
  literal with success/error arguments, numRetries, etc.