EventEmitter.once() method
Like on but the listener will only be fired once and then it will be removed.
Signature:
class EventEmitter {
once(event: EventType, handler: Handler<any>): this;
}
Parameters
| Parameter | Type | Description |
|---|---|---|
| event | EventType | the event you'd like to listen to |
| handler | Handler<any> | the handler function to run when the event occurs |
Returns:
this
this to enable you to chain method calls.