Function once

packages/melonjs/src/system/event.ts:468–474

(
	eventName: E,
	listener: Events[E],
	context?: any,
)

 * me.event.once("event-name", myFunction, this);
 */
export function once<E extends keyof Events>(
	eventName: E,
	listener: Events[E],
	context?: any,
) {
	eventEmitter.addListenerOnce(eventName, listener, context);
}

/**
 * remove the given listener for a given event.