Event Emitter utils for any where

The Emitter can be used to expose an Event to the public to fire it from the insides.

Install

yarn add @white-matrix/event-emitter

Usage

Step1： Register emitter event

import { Emitter } from '@white-matrix/event-emitter';

type UserInfoUpdateType = 'update' | 'clear';
export interface UserInfoUpdateEvent {
  type: UserInfoUpdateType;
  // data: any
}

export const userInfoUpdateEmitter = new Emitter<UserInfoUpdateEvent>();

Step2: Listener on ui

useEffect(() => {
   const event = userInfoUpdateEmitter.event((e) => {
     if (e.type === 'clear') {
       // clear user info in global state
     } else {
       // update user info in global state
     }
   });
   return () => {
     event.dispose();
   };
}, []);

Step3: Fire event

userInfoUpdateEmitter.fire({ type: 'clear' });