Empower a type-safety of events with a typed event-emitter

Provides an amazing experience of event handling by utilising incredible benefits of types. It requires event-to-callback-argument map as first generic attribute and makes sure that all methods are used correctly.

1. Define event-name to callback-argument type map

Event name is a string, and callback argument can be any type. Use void if event doesn't require an argument.

type EventsMap = {
  ping: { message: string };
}

2. Instantiate TypedEventEmitter

const emitter = new TypedEventEmitter<EventsMap>();

3. Subscribe to events

emitter.on('ping', (arg) => {
  console.log(`ping: "${arg.message}"`);
});

4. Start emitting events

emitter.emit('ping', { message: 'hello!' });

[-] Add tests
[-] Add documentation
[-] Publish npm package \