Firebase Cloud Messaging with Node.js - FCM 1

fcm1.js

'use strict'

const app = require('express')(),
    request = require('request'),
    mongo = require('mongodb'),
    bodyParser = require('body-parser')

app.use(bodyParser.json())
app.use(bodyParser.urlencoded({
    extended: false
}))

const MongoClient = mongo.MongoClient

const url = 'mongodb://localhost:27017/myDatabase'