tiny-event-utils

A lightweight, strongly typed event emitter.

Installation

npm install tiny-event-utils

Usage

import { EventEmitter } from 'tiny-event-utils';

type Events = {
  login: { username: string };
  logout: void;
};

const events = new EventEmitter<Events>();

// Returns an unsubscribe function
const unsubscribe = events.on('login', (data) => {
  console.log('Logged in:', data.username);
});

events.emit('login', { username: 'john' });
unsubscribe();

Available Methods

• on(event, listener) — Listen for an event
• off(event, listener) — Remove a listener
• once(event, listener) — Listen exactly once
• emit(event, payload) — Trigger an event
• clear(event?) — Remove all listeners
• listenerCount(event) — Get number of listeners