Events

This is an alternative event emitter that works on all platforms. It allows you to specify the event types, and keeps the emit method protected.

npm install @baileyherbert/events

Example

Extend the EventEmitter class and provide an enumeration of tuples for <T>:

import { EventEmitter } from '@baileyherbert/events';

export class Chat extends EventEmitter<Events> {
    protected _onUserConnected(user: User) {
        this.emit('connected', user.username);
    }
}

type Events = {
    /**
     * These JSDoc comments will show up in intellisense too!
     */
    chat: [username: string, message: string];
    connected: [username: string];
    disconnected: [username: string];
};

Then you can listen to those events like usual, but with autocompleted event names and typed arguments. 👍

const chat = new Chat();

chat.on('connected', username => {});
chat.on('disconnected', username => {});
chat.on('chat', (username, message) => {});