method

child_process.ChildProcessByStdio.prependOnceListener

event: string,
listener: (...args: any[]) => void
): this;

Adds a one-timelistener 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 listener

The callback function

event: 'close',
listener: (code: null | number, signal: null | Signals) => void
): this;
event: 'disconnect',
listener: () => void
): this;
event: 'error',
listener: (err: Error) => void
): this;
event: 'exit',
listener: (code: null | number, signal: null | Signals) => void
): this;
event: 'message',
listener: (message: Serializable, sendHandle: SendHandle) => void
): this;
event: 'spawn',
listener: () => void
): this;