Using fbemitter-https://github.com/facebook/emitter/ (An event emitter) with React + ES6

EmittingComponent.js

import React from 'react'

import mrEmitter from '../helpers/mrEmitter'

export default class EmittingComponent extends React.Component {
  handleClick = () => {
    mrEmitter.emit('onSomeEvent', 'foo sends bar')
  }

  render() {
    return (
      <div>
        <button onTouchTap={this.handleClick}>foo</button>
      </div>
    )
  }
}

EventUser.js

import React from 'react'

import mrEmitter from '../helpers/mrEmitter'

// remove this subscription afterwards when there is no use for it
let Subscription = null

export default class EventUser extends React.Component {
  // register all adding stuff here
  componentWillMount() {
    Subscription = mrEmitter.addListener('onSomeEvent', (data) => {
      console.log(data)
    });
  }

  // unregister all references here
  componentWillUnmount() {
    Subscription.remove()
  }
  
  render() {
    return (
      <div>
        Bar
      </div>
    )
  }
}

mrEmitter.js

// declare the event emitter var here to be useed everywhere in your app
import { EventEmitter } from 'fbemitter'

// mr Emitter is your friendly next door emitter
const mrEmitter = new EventEmitter()

export default mrEmitter