1const functions = require('firebase-functions');const request = require('request-promise');exports.userCreated = functions.database.ref('/users/{id}').onWrite(event => { let email = event.data.child('email').val(); return request({ url: 'https://someservice.com/api/some/call', headers: { 'X-Client-ID': functions.config().someservice.id, 'Authorization': `Bearer ${functions.config().someservice.key}` }, body: {email: email} });});