events.on
Version:
ponyfill for Node.js core events.on
42 lines (30 loc) • 721 B
Markdown
Ponyfill for events.on for Node.js 10.x.
Use Node.js core implementation if available.
See [Node.js own docs](
https://nodejs.org/dist/latest-v12.x/docs/api/events.html#events_events_on_emitter_eventname)
for more details.
```
npm i events.on
```
```js
const on = require('events.on')
const ee = new EventEmitter()
process.nextTick(() => {
ee.emit('foo', 'bar')
// 'bar' is a spurious event, we are testing
// that it does not show up in the iterable
ee.emit('bar', 24)
ee.emit('foo', 42)
})
const iterable = on(ee, 'foo')
for await (const event of iterable) {
console.log(event)
// this loop never ends, to end you need to break
// break
}
```
MIT