Google Firestore - Deploy Error: Function load error: Code in file index.js can't be loaded

Question

I am trying to deploy my functions to firebase, I'm getting the following error:

Function load error: Code in file index.js can't be loaded. Did you list all required modules in the package.json dependencies?

Detailed stack trace: Error: Cannot find module 'express'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object. (/user_code/index.js:6:15)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)

Firebase:

"firebase-admin": "~5.8.1"

"firebase-functions": "^0.8.1"

This issue is already raised here : https://github.com/firebase/firebase-tools/issues/515 (But for 'firebase-admin' module)

Based on inputs from there, I tried doing this: npm install --save-exact [email protected] npm install --save-exact [email protected]. but I ran into the following error :

Error: Error occurred while parsing your function triggers. Please ensure you have the latest firebase-functions SDK by running "npm i --save firebase-functions@latest" inside your functions folder.

Node version, v8.4.0.

Index.js

const functions = require('firebase-functions'); 
const admin = require('firebase-admin'); 
admin.initializeApp(functions.config().firebase); 
var express = require('express'); 
var bodyParser = require('body-parser'); 

const users = require('../functions/controllers/users.controller'); 
var app = express(); 
app.use(bodyParser.urlencoded({ extended: true })) 
app.use(bodyParser.json()); 
app.post('/users', users.createUsers); 
exports.myappusers = functions.https.onRequest(app);

users.controller.js

const admin = require('firebase-admin');
const db = admin.firestore();

exports.createUsers = function(req, res){
    if(!req.body.name){
        return res.status(404).send({message: 'User name cannot be empty'})
    }
    else{
        db.collection('user-test')
        .add({
            name: req.body.name
        })
        .then((writeResult) => {
            return res.json({ result: `User ID: ${writeResult.id} added.`});
        })
        .catch((err)=>{
            return res.status(500).send(err);
        })
    }
}

Please show the minimal code from your index.js that reproduces this error. — Doug Stevenson
– Doug Stevenson, Commented Feb 7, 2018 at 7:58
@PeterHaddad, yes I did. I get back the first error about express. Kind of, stuck in a cycle. — Malick
– Malick, Commented Feb 7, 2018 at 7:58
FYI, just checked the node_modules folder, express exists. — Malick
– Malick, Commented Feb 7, 2018 at 8:36

Manuel Perez Heredia · Accepted Answer · 2018-02-12 10:47:31Z

8

After breaking my head for a day, I did the obvious. I installed Express and did a deploy but this time I got the same error for body-parser, _Error: Cannot find module 'body-parser'_ Installed body-parser as well. Deployed again, voila!! deployment was successful.

But I'm not really sure why I had to explicitly install them even though both express and body-parser module were present in the node-modules folder.

Summary:

npm install --save --save-exact [email protected]    
npm install --save --save-exact [email protected]    
firebase deploy --only functions

edited Feb 12, 2018 at 10:47

Manuel Perez Heredia

2,4273 gold badges21 silver badges27 bronze badges

answered Feb 8, 2018 at 7:20

Malick

5271 gold badge4 silver badges16 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Konstantin Kozirev Over a year ago

In my case it was that I put it not into functions folder, but root of the firebase. I think the one reading this will get it.

RAVI · Accepted Answer · 2020-05-12 10:16:32Z

3

first use

npm install --save firebase

in C:\Users\HP\Desktop\New folder (2)\functions>

remember install firebase should be in functions folder the it will work properly

you should see this dependencies

"dependencies": { "express": "4.17.1", "firebase": "^7.14.3", "firebase-admin": "^8.10.0", "firebase-functions": "^3.6.1" },

answered May 12, 2020 at 10:16

RAVI

312 bronze badges

Comments

Lorenzo Oliver · Accepted Answer · 2018-08-12 18:34:21Z

1

The reason you see express in the node_modules folder but still get the error is because it is not added in the package.json. Add it in the package.json in dependencies like this:

"dependencies":{
   "express": "4.16.3",
   "firebase-admin": "5.13.0",
   "firebase-functions": "2.0.2"
 }

You should be able to deploy now.

answered Aug 12, 2018 at 18:34

Lorenzo Oliver

711 silver badge6 bronze badges

Collectives™ on Stack Overflow

Google Firestore - Deploy Error: Function load error: Code in file index.js can't be loaded

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related