EventEmitter.prependListener - Node documentation
method EventEmitter.prependListener

Usage in Deno

import { type EventEmitter } from "node:events";
EventEmitter.prependListener<K>(
eventName: Key<K, T>,
listener: Listener1<K, T>,
): this

Adds the listener function to the beginning of the listeners array for the event named eventName. No checks are made to see if the listener has already been added. Multiple calls passing the same combination of eventNameand listener will result in the listener being added, and called, multiple times.

server.prependListener('connection', (stream) => {
  console.log('someone connected!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

Type Parameters

K

Parameters

eventName: Key<K, T>

The name of the event.

listener: Listener1<K, T>

The callback function

Return Type

this