on-first

Attach an EventEmitter listener that emits before all other existing listeners for that event.

Note: it's also worth checking out timoxley's overshadow-listeners. The API offers more flexibility, and unlike on-first only uses the public EventEmitter API.

Usage

require('on-first')(emitter, event, listener)

• emitter is the EventEmitter to listen to.
• event is the event to listen to.
• listener is the event callback.

License

MIT. See LICENSE.md for details.