@aphorica/vue-event-bus

Provides Observer Pattern for VueJS

So trivial its ridiculous, but I use it everywhere and I don't want to have to keep re-creating this file every time I need it in a new project.

Besides, something may change

Usage

  import {EventBus} from '@aphorica/vue-event-bus'

  EventBus.$on('event', handler)
  EventBus.$off('event', handler)

Note

For every handler you add in a component, you should remove it, minimally on 'beforeDestroy()' (this argues against using anonymous or arrow functions as handlers.)

The component may not get GC'ed immediately and can still receive events, even though it is presumably destroyed.

(Interesting debugging experience.)