Unable to send SMS through Twilio and Google Functions - firebase

Question

I am attempting to send a text (a one-time pass code) using Twilio, firebase and Google Functions, and using Postman.
I have run $ npm install --save twilio#3.0.0 -rc.13 in the functions directory.
When I run $ firebase deploy, it completes. But on Postman, when I do POST, Body and feed a JSON { "phone": "555-5555" }, I get an "Error: could not handle the request."
I am able to send a text in Twilio Programmable SMS from my Twilio number to an actual outside number direct to the mobile phone. I'm using live credentials for Sid and AuthToken.
Is this an issue with Twilio, Google Functions and some configurations?
Here are the logs on Functions:
// White flag sign//
Function execution took 1452 ms, finished with status: 'crash'
//Red Warning sign//
TypeError: handler is not a function
at cloudFunction (/user_code/node_modules/firebase-functions/lib/providers/https.js:26:41)
at /var/tmp/worker/worker.js:676:7
at /var/tmp/worker/worker.js:660:9
at _combinedTickCallback (internal/process/next_tick.js:73:7)
at process._tickDomainCallback (internal/process/next_tick.js:128:9)
Also, the google eslint forces consistent-return, which is why I put "return;" in the request-one-time-password.js. I cannot seem to turn it off by adding "consistent-return": 0 in eslintrc.
My code(with secret keys and phone numbers redacted):
//one-time-password/functions/service_account.js
has my keys copied and pasted.
//one-time-password/functions/twilio.js
const twilio = require('twilio');
const accountSid = 'redacted';
const authToken = 'redacted';
module.exports = new twilio.Twilio(accountSid, authToken);
//one-time-password/functions/request-one-time-password.js
const admin = require('firebase-admin');
const twilio = require('./twilio');
module.export = function(req, res) {
if(!req.body.phone) {
return res.status(422).send({ error: 'You must provide a phone number!'});
}
const phone = String(req.body.phone).replace(/[^\d]/g, '');
admin.auth().getUser(phone).then(userRecord => {
const code = Math.floor((Math.random() * 8999 + 1000));
// generate number between 1000 and 9999; drop off decimals
twilio.messages.create({
body: 'Your code is ' + code,
to: phone,
from: '+redacted'
}, (err) => {
if (err) { return res.status(422).send(err); }
admin.database().ref('users/' + phone).update({ code: code, codeValid: true }, () => {
res.send({ success: true });
})
});
return;
}).catch((err) => {
res.status(422).send({ error: err })
});
}
/////////////////////////////////
//one-time-password/functions/index.js
const admin = require('firebase-admin');
const functions = require('firebase-functions');
const createUser = require('./create_user');
const serviceAccount = require('./service_account.json')
const requestOneTimePassword = require('./request_one_time_password');
admin.initializeApp({
credential: admin.credential.cert(serviceAccount),
databaseURL: "https://one-time-password-650d2.firebaseio.com"
});
exports.createUser = functions.https.onRequest(createUser);
exports.requestOneTimePassword =
functions.https.onRequest(requestOneTimePassword);

Answer 1

You have
module.exports = new twilio.Twilio(accountSid, authToken);
on one line, and further down
module.export = function(req, res) { ... }.
Try changing export to exports.

Answer 2

One thing that tripped me up for a long time was how twilio sent the request body to the cloud function. It sends it in a body object so to access your request body it will look something like this
req.body.body
On top of that it passed it as a JSON string so I had to JSON.parse()
Example I got working:
export const functionName= functions.https.onRequest((req, res) => {
cors(req, res, () => {
let body = JSON.parse(req.body.body);
console.log(body);
console.log(body.service_id);
res.send();
});
});
This also may depend on the Twilio service you are using. I was using their Studio HTTP Request Module.
Hope this helps a little, not sure if it was your exact problem though :(