Function emit

tests/qunit-2.9.2.js:1263–1275

* Emits an event with the specified data to all currently registered listeners. * Callbacks will fire in the order in which they are registered (FIFO). This * function is not exposed publicly; it is used by QUnit internals to emit * logging events. * * @private * @method emit *

(eventName, data)

   * @return {Void}
   */
  function emit(eventName, data) {
  	if (objectType(eventName) !== "string") {
  		throw new TypeError("eventName must be a string when emitting an event");
  	}

  	// Clone the callbacks in case one of them registers a new callback
  	var originalCallbacks = LISTENERS[eventName];
  	var callbacks = originalCallbacks ? [].concat(toConsumableArray(originalCallbacks)) : [];

  	for (var i = 0; i < callbacks.length; i++) {
  		callbacks[i](data);
  	}
  }

  /**
   * Registers a callback as a listener to the specified event.