eventemitter-strict

A eventemitter with typescript full support

eventemitter-strict is a eventemitter with typescript full support. The module is API compatible with the EventEmitter that ships by default with Node.js.

Allow to type safe definition your eventemitter

Feature

• typesafe
• compatible with nodejs
• simple but strong

Install

1npm install eventemitter-strict

Usage

1import { EventEmitter } from 'eventemitter-strict';
2
3interface FooEventMap {
4  eventA: () => void;
5  eventB: (num: number) => void;
6}
7
8const ee = new EventEmitter<FooEventMap>();
9ee.emit('eventA');
10ee.emit('eventB', 1);
11ee.emit('eventB', "Any"); // this will throw error in ts

or use with extends

1import { EventEmitter } from 'eventemitter-strict';
2
3interface FooEventMap {
4  eventA: () => void;
5  eventB: (num: number) => void;
6}
7
8class Foo extends EventEmitter<FooEventMap> {
9  bar() {
10    this.emit('eventA');
11    this.emit('eventB', 1);
12    this.emit('eventB', "Any"); // this will throw error in ts
13  }
14}

License

MIT