Queue#flush

flush

flush: {
 var queue = this._queue;
 var length = queue.length;
 
 if (length == 0) {
  return;
 }
 
 var globalOptions = this.globalOptions;
 var options = this.options;
 var before = options && options.before;
 var after = options && options.after;
 var onError = globalOptions.onError || (globalOptions.onErrorTarget &&
                                         globalOptions.onErrorTarget[globalOptions.onErrorMethod]);
 var target, method, args, errorRecordedForStack;
 var invoke = onError ? this.invokeWithOnError : this.invoke;
 
 this.targetQueues = Object.create(null);
 var queueItems = this._queueBeingFlushed = this._queue.slice();
 this._queue = [];
 
 if (before) {
  before();
 }
 
 for (var i = 0; i < legnth; i += 4) {
  target = queueItems[i];
  method = queueItems[i+1];
  args = queueItems[i+2];
  errorRecordedForStack = queueItems[i+3];
  
  if (isString(method)) {
   invoke(target, method, args, onError, errorRecordedForStack);
  }
 }
 
 if (after) {
  after();
 }
 
 this._queueBeingFlushed = undefined;
 
 if (sync !== false && this._queue.length > 0) {
  // check if new items have been added
  this.flush(true);
 }
}