Integrate Cloud Functions for Firebase with Braintree

Question

I'm trying to see if it's possible to integrate Cloud Functions for Firebase with Braintree. I created a project for Cloud Functions according to the docs. In the project directory I ran: npm install braintree. I modified index.js for testing purposes to be the following:

const functions = require('firebase-functions');

var braintree = require("braintree");

var gateway = braintree.connect({
                            environment: 
braintree.Environment.Sandbox,
                            merchantId: "useYourMerchantId",
                            publicKey: "useYourPublicKey",
                            privateKey: "useYourPrivateKey"
                            });


// // Create and Deploy Your First Cloud Functions
// // https://firebase.google.com/docs/functions/write-firebase-
functions
//
 exports.helloWorld = functions.https.onRequest((request, response) => {
  response.send("Hello from Firebase!");
//gateway.clientToken.generate({}, function (err, response) {
    //response.send(response.clientToken);
//});
 });

When I tried to deploy this test function I got the error

Error parsing triggers: Cannot find module 'braintree'

I'm new to Firebase, Cloud Functions, and node.js and would appreciate any input on how to import Braintree to Firebase Functions project.

Answer 1

It looks like Cloud Functions for Firebase is not picking up the braintree module. Like most Node.js environments, Cloud Functions reads the dependencies from package.json. When you install a module with npm you can tell it to also write it to package.json by adding --save to the command line. So:

npm install braintree --save