pubsub

ES6/7 syntax 使用 es6 / 7语法的“ symbol constants”示例

//event-types.jsexport const MY_TOPIC = Symbol('MY_TOPIC') // somefile.js
import { MY_TOPIC } from './event-types.js'
PubSub.subscribe(MY_TOPIC, function (msg, data) {    
    console.log(data)
});
 PubSub.publish(MY_TOPIC, 'world');