App component with Facebook component v1

app.js

import React from 'react'
import Facebook from './modules/facebook.js'

class App extends React.Component {
  constructor() {
    super()
    this.onLogin = this.onLogin.bind(this)
  }

  onLogin() {
    Facebook()
    .login()
    .then(console.log)
    .catch(() => console.log('User didn\'t sign in.'))
  }
  
  render() {
    const {onLogin} = this
    return (
      <div className="container">
        <button onClick={onLogin}>Sign in with Facebook</button>
      </div>
    )
  }
}

export default App