backburner end

backburner-end

end: function() {
  var options = this.options;
  var onEnd = options && options.ondEnd;
  var currentInstance = this.currentInstance;
  var nextInstance = null;
  
  var finallyAlreadyCalled = false;
  
  try {
    currentInstance.flush();
  } finally {
    if (!finallyAlreadyCalled) {
      finallyAlreadyCalled = true;
      
      this.currentInstance = null;
      
      if (this.instanceStack.length) {
        nextInstance = this.instanceStack.pop();
        this.currentInstance = nextInstance;
      }
      
      if (onEnd) {
        onEnd(currentInstance, nextInstance)
      }
    }
  }
}