Init firebase services in nodejs

firebase_env.js

module.exports = {
	'type': '',
	'project_id': '',
	'private_key_id': '',
	'private_key': '',
	'client_email': '',
	'client_id': '',
	'auth_uri': '',
	'token_uri': '',
	'auth_provider_x509_cert_url': '',
	'client_x509_cert_url': ''
};

server.js

var admin = require('firebase-admin');

if (env != 'production') serviceAccount = require('./firebase_env');
else serviceAccount = JSON.parse(Buffer.from(process.env.SERVICEACCOUNT, 'base64').toString('utf8'));

admin.initializeApp({
	credential: admin.credential.cert(serviceAccount),
	databaseURL: serviceAccount.databaseURL
});