Function createEventHook

Utility for creating event hooks

Example:

  it('should trigger event', () => {
      const myFunction = () => {
        const hook = createEventHook<string>()
        const trigger = (payload: string) => hook.trigger(payload)
        return {
          trigger,
          onResult: hook.on,
        }
      }

      let msg = ''

      const { trigger, onResult } = myFunction()
      const { off } = onResult(param => msg = param)

      trigger('hello world')
      expect(msg).toBe('hello world')

      off()

      trigger('foo bar')
      expect(msg).toBe('hello world')
    })