Usage no npm install needed!

<script type="module">
  import nanoevents from 'https://cdn.skypack.dev/nanoevents';
</script>

README

Nano Events

Simple and tiny event emitter library for JavaScript.

Only 97 bytes (minified and gzipped). It uses Size Limit to control size.
on method returns unbind function. You don’t need to save callback to variable for removeListener.
TypeScript and ES modules support.
No aliases, just emit and on methods. No Node.js EventEmitter compatibility.

import { createNanoEvents } from 'nanoevents'

const emitter = createNanoEvents()

const unbind = emitter.on('tick', volume => {
  summary += volume
})

emitter.emit('tick', 2)
summary //=> 2

unbind()
emitter.emit('tick', 2)
summary //=> 2

Docs

Read full docs on GitHub.