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prependListener

method EventEmitter.prependListener
Jump to headingEventEmitter.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 eventName and 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 Jump to heading

Parameters Jump to heading

Jump to headingeventName: Key<K, T>

The name of the event.

The callback function

Return Type Jump to heading

this
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