amitt

amitt is a simple event emitter for browser and node.js

Description

amitt helps you build functional event emitter / pubsub

Documentations for types - https://webigorkiev.github.io/amitt/

Installation

npm i amitt
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// using ES6 modules
import {amitt} from "amitt";
 
// using CommonJS modules
const {amitt} = require("amitt");
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Features

• Zero Dependencies
• Tiny ~800b
• Very simple small library
• Focus on usability and performance
• Testing coverage
• RegExp event filters for emit
• once execute handlers
• emit can return array of Promise for async use

Usage

Simple example

import {amitt} from 'amitt';

const emitter = amitt();

emitter.on("fire", () => console.log("handler"));
emitter.emit("fire");

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async example

const {amitt} = require('../dist/index.js');
const emitter = amitt();

(async() => {
    try {
        const handler1 = async() => await new Promise(resolve => setTimeout(resolve, 1000));
        const handler2 = async() => await new Promise(resolve => setTimeout(resolve, 1000));

        emitter.on("fire", handler1);
        emitter.on("fire-fight", handler2);

        await Promise.all([...emitter.emit(/^fi/)]);

        console.log("end");
    } catch(e) {
        console.log(e);
    }
})();
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