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

Answer 1

I soved it by upgrading the firebase-functions dependency

yarn add firebase-functions

In the functions directory

Answer 2

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.

Answer 3

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.

Answer 4

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.

Answer 5

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";

Answer 6

My issue was related to Firebase functions config was set as null when doing a firebase serve locally.

I got the following error:

Error: Failed to load function definition from source: Failed to generate manifest from function source: ReferenceError: cannot read key from undefined

Make sure you have a .runtimeconfig.json file inside your functions folder , in case you don't have it, to save that file from your current configuration run this command from the terminal (again inside the functions folder):

firebase functions:config:get > .runtimeconfig.json

check this github issue

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"

Answer 8

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.