Event bus emit vue js

EvnetBus.js

// create eBus variable in main.js
export const eBus = new Vue();

// import ebus to component
import {eBus} from '../main'

methods:{
  changeName () {
    //create custom event
    eBus.$emit('CHANGE_NAME', this.userName);
  }
}

// subscribe to  custom event CHANGE_NAME event
import {eBus} from '../main'

mounted(){
  eBus.$on('CHANGE_NAME', (payload) => {
    this.userNameProfile = payload;
  })
}