firebase cloud error Failed to load function definition from source

Question

unable to deploy changes to firebase cloud

Action: "Firebase Deploy" in cmd

results:

i  deploying functions
i  functions: ensuring required API cloudfunctions.googleapis.com is enabled...
i  functions: ensuring required API cloudbuild.googleapis.com is enabled...
+  functions: required API cloudfunctions.googleapis.com is enabled
+  functions: required API cloudbuild.googleapis.com is enabled
i  functions: preparing codebase default for deployment

Error: Failed to load function definition from source: Failed to generate manifest from function source: Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: No "exports" main defined in C:\Users\rushikesh.chaskar\IdeaProjects\todosmanager\node_modules\firebase\package.json

Betwixt

I found 2 similar stackoverflow threads thread1 and thread2. Can you go through it once? – Category

Just do 'npm install firebase-functions' – Metritis

facing similar issue #76943498 , any help? – Cordiacordial

Answer 1

Adding to the never ending list of problems. If you get something like the below error, check your imports.

Failed to load function definition from source: FirebaseError: Failed to load function definition from source: Failed to generate manifest from function source: TypeError: Cannot read properties of undefined (reading 'INTERNAL')

I noticed some outdated Admin SDK instructions had the following:

import {initializeApp} from "firebase-admin";

Where as the correct import is:

import {initializeApp} from "firebase-admin/app";

Hereford

Ugh, the fact this was the solution and firebase allows the code to compile and then give a cryptic error is infuriating. +1 – Palaeontology

Answer 2

In my case, I was able to run firebase deploy --debug for verbose output logging which helped me to further narrow down the issue.

Janitor

Answer 3

In my case I had an error in my code that only surfaced when deploying.

The error I got was firebase functions "Failed to generate manifest from function source: TypeError: Cannot read properties of undefined (reading 'toString')"

After about an hour of commenting out everything and then uncommenting a chunk at a time I realized my code wasn't deploying to firebase functions because of a line I wrote that included process.env.FUNCTIONS_EMULATOR.toString(). Apparently when deploying process.env.FUNCTIONS_EMULATOR is null so trying to call toString on it throws an error.

I changed that line to `${process.env.FUNCTIONS_EMULATOR}` and now my firebase functions deploy.

Aspire

can confirm this alse worked for me. I had variables that I was referencing in a function file using process.env.variableName and wrapping these in ${process.env.variableName} fixed my issue. – Brettbretz

Answer 4

I soved it by upgrading the firebase-functions dependency

yarn add firebase-functions

In the functions directory

Alkyne

Answer 5

In my situation, the problem was related to my folder structure. To identify the root cause of the issue, you might be able to analyze the following file.

functions/firebase-debug.log 

Ullyot

Answer 6

This happened when I run firebase emulators:start I am using typescript and an npm start in the functions folder plus the firebase emulators:start worked for me.

Edit: you could just run npm run serve or yarn serve that does both

Ginetteginevra

Answer 7

Personally, I was using jest to test my modules. I had files looking like this:

potatoes.js
potatoes.test.js

So importing doesn't work when I deploy

import {potato} from "./potatoes"

I had to do it like this

import {potato} from "./potatoes.js"

Backboard

Answer 8

It happened with @googleapis/androidpublisher when tried to deploy Cloud Functions: Failed to load function definition from source: Failed to generate manifest from function source: Error: Cannot find module '@googleapis/androidpublisher'

Interesting thing is VS Code did not detect any issue and it only shows up when I try to deploy. Solution is to run the command and install the npm package:

npm install @googleapis/androidpublisher

Exult

Answer 9

For this error:

Error: Failed to load function definition from source: Failed to generate manifest from function source: SyntaxError: Cannot use import statement outside a module

cd to the functions folder (you're probably already here) and add "type": "module" in the package.json file after the "description" line. This worked for me

Schrecklichkeit

Answer 10

I had little bit different error, but Google search still shows this thread first.

My error:

Failed to load function definition from source: FirebaseError: Functions codebase could not be analyzed successfully. It may have a syntax or runtime error

Solution: Change how you are importing things. My working example (I am using Typescript inside my index.ts functions):

import { auth, pubsub, firestore, https, Change, EventContext } from 'firebase-functions'
import { onCall } from 'firebase-functions/v2/https'
import { info } from 'firebase-functions/logger'
import { firestore, messaging } from 'firebase-admin'
import { initializeApp } from 'firebase-admin/app'

I "migrated" from require because it didn't include types, but it could not be 1:1 when rewriting into imports.

1. I could not import everything as import functions from 'firebase-functions' now and I had to destructure the methods
2. I had to import some of methods from sub-directory (like import { onCall } from 'firebase-functions/v2/https')

Before with require that worked:

const functions = require('firebase-functions')
const admin = require('firebase-admin')
const { firestore } = require('firebase-admin')
const { info } = require('firebase-functions/logger')
// import functions from 'firebase-functions' // won't work!
// import { initializeApp } from 'firebase-admin' // won't work!

Lesialesion

Answer 11

I had faced this issue. To resolve this issue I upgraded firebase functions using this command :npm install --save firebase-functions@latest

Chouest

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Answer 12

To resolve this issue I upgrade firebase functions by using npm install --save firebase-functions@latest in my functions directory

I had been using an outdated version of firebase-functions.

Instal

Answer 13

I've had the problem without running npm run build inside functions which stands for tsc in a TypeScript project. After that, an import (inside nuxt.config.js btw) has been updated which I could see in functions/lib/index.js, and pointed to the correct location. Thanks to it, the error was gone.

The full log was Failed to load function definition from source: FirebaseError: Failed to load function definition from source: Failed to generate manifest from function source: Error: Cannot find module './nuxt.config.js' Require stack: - /mypath/to/my/project_name/functions/lib/index.js

At

Answer 14

I am using typescript and msssql.

What I did, it was to delete the folder lib.

and run the build command again.

I hope it works

Hogweed

Answer 15

I had a similar situation where my custom error was being thrown, preventing deployment. So it just read:

Failed to load function definition from source: Failed to generate manifest from function source: Error:

I was being preemptive and manually checking if my stored API key was present. It was undefined, and I thought something was wrong with my secrets setup, but I guess it just couldn't be deployed with that error check in place... We'll just have to be careful not to try and use it without all the environment variables set.

Hamstring

Answer 16

I had the same issue, it turns out I didnot return at the end of the function. Added return true and error went away!

Scaife

Answer 17

For me the issue was that I had no endpoint in index.ts file besides one cloudEvent. So simply having a dummy hello world endpoint of type onRequest solved the issue. The error message doesn't really help.

Iloilo

Answer 18

In my case, the problem was a TypeScript enum which I turned into an array to use in my code. Apparently, firebase-functions doesn't like that.

I ended up defining the array directly in my code without using the enum from my type definitions.

Precipitin

+1 this sounds weird but I also experienced something similar. Replacing the enum with an enum-type fixed the issue. e.g. export type foo = "foo" | "bar" – Cognizable

Answer 19

In my case, I forgot to include the subfolder path in the configuration file.

Code(index.ts):

exports.my_group = require('./subfolder/parser')

Error:

Error: Failed to load function definition from source: Failed to generate manifest from function source: Error: Cannot find module './subfolder/parser'

Solution was to change

"include": [
  "src"
]

to

"include": [
  "src", "src/**/*"
 ]

in tsconfig.json file.

Torbert