The blazing fast event library π₯
Evee is a lightweight event library, written in just ~200 lines of JavaScript.
Evee exports ESM, CommonJS and Browser globals, so you can use it in any environment.
npm install evee # if you're using NPM yarn add evee # if you're using Yarn
Evee now natively supports ESM and CommonJS.
We export two things:
Evee(default export): The class you can use to create new instances of Evee.evee(named export): A pre-made instance of Evee so you can immediately start using it.
If you're planning to use Evee in NodeJS, you can now import it like this:
import Evee, { evee } from 'evee'; // If you're using ESM (import/export) const { default: Evee, evee } = require('evee'); // If you're using CommonJS (require)
If you're planning to use Evee in the browser, you can now import it like this:
<!-- ESM if you're targeting modern browsers --> <script type="module"> import Evee, { evee } from 'https://cdn.jsdelivr.net/npm/evee@3'; </script> <!-- Global export if you're targeting older browsers --> <script src="https://cdn.jsdelivr.net/npm/evee@3/dist/browser/index.min.js"></script> <script> // You can use the `Evee` (class) and `evee` (instance) globals here </script>
import { evee } from 'evee' // Subscribe to the 'update' event evee.on('update', e => console.log(`Received event #${e.data}`)) for (let i = 0; i < 100; i++) { // Dispatch the 'update' event evee.emit('update', i); }
You can also keep track of your event listeners unsubscribe from events you don't need anymore.
import { evee } from 'evee' // Subscribe to the 'say' event var receiver = evee.on('say', e => console.log(e.data)); // Dispatch the 'say' event evee.emit('say', 'Hello, world!'); // Unsubscribe from the 'say' event evee.drop(receiver);
If you want to fire an event only once, you can do that too!
The event will be automatically removed after the first usage:
import { evee } from 'evee' // Subscribe to the 'say' event evee.once('say', e => console.log('hello, world')); // Dispatch the 'say' event two times evee.signal('say'); evee.signal('say'); // hello, world is only printed once!
As you can see, evee is really easy to use!
Start using evee today and stop worrying about slow events :)