@composi/observer:

• Install
• Observer
• Watch
• Send
• Unwatch

Unwatch

Unwatch an Event

There may be situations where you need an observer, but only temporarily. You can use the observer's unwatch method to stop watchers from reacting to a particular event. This takes just one argument: the event to stop watching. When you turn off an event with unwatch, this affects all watchers for that event.

import { Observer } from '@composi/observer' 
const observer = new Observer()
observer.watch('whatever', () => {
  alert('Whatever just happened!')
})

// Sometime later send the event:
observer.send('whatever')
// alert: 'Whatever just happened!'

// Sometime later unwatch the event:
observer.unwatch('whatever')
// Sending the event now does nothing:
observer.send('whatever')
          

If you need to revive an unwatched event, you can do so by initalizing a watcher for it later.