method
events.default.prependOnceListener
eventName: IfEventMap<T, unknown | unknown | E>,
listener: IfEventMap<T, (...args: E extends keyof T ? T[E<E>] : E extends keyof EventEmitterEventMap ? EventEmitterEventMap[E<E>] : any[]) => void>
): this;
Adds a one-time listener function for the event named eventName to the beginning of the listeners array. The next time eventName is triggered, this listener is removed, and then invoked.
server.prependOnceListener('connection', (stream) => {
console.log('Ah, we have our first user!');
});Returns a reference to the EventEmitter, so that calls can be chained.
@param eventName
The name of the event.
@param listener
The callback function