Firebase Function Error: The default Firebase app does not exist

Question

Previously, the function worked. but I added some code, now this error is coming. How to fix this issue?

Error: Error occurred while parsing your function triggers.

Error: The default Firebase app does not exist. Make sure you call initializeApp() before using any of the Firebase services.
    at FirebaseAppError.FirebaseError [as constructor] (/Users/demo/functions/node_modules/firebase-admin/lib/utils/error.js:42:28)

code

import * as functions from 'firebase-functions';
import * as admin from 'firebase-admin';
import { getLocations, getLocationsByType } from '../service/locationQuery/locationQuery';

//I tried both way, but same error came
// admin.initializeApp(functions.config().firebase);
admin.initializeApp();
exports.findUsers = functions.https.onCall(async (data: any, context: any) => {

why someone votes down my question? what is the reason?

BIS Tech
– BIS Tech

2020-02-17 12:24:57 +00:00
Commented Feb 17, 2020 at 12:24 — BIS Tech
– BIS Tech, Commented Feb 17, 2020 at 12:24

BIS Tech · Accepted Answer · 2020-02-17 12:21:07Z

13

I changed initialize place.. now It's working. I have no idea why is that.

import * as admin from 'firebase-admin';
admin.initializeApp();//add to here
import { getLocations, getLocationsByType } from '../service/locationQuery/locationQuery';

// admin.initializeApp(functions.config().firebase);

exports.findUsers = functions.https.onCall(async (data: any, context: any) => {

answered Feb 17, 2020 at 12:21

BIS Tech

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2 Comments

Garrett Over a year ago

It seems that you must have admin.initializeApp() before any functions are imported/exported in the index file. This is demonstrated in @Denis Alarie 4RP answer.

Güray Over a year ago

@Garrett This was the answer I was looking for! Thanks

Dharman · Accepted Answer · 2021-06-18 00:09:53Z

4

Changing the place where you initialize your app might be important in ensuring that any declarations that require the app to be initialized come after. I had the same problem and when I made this change in order the problem went away..

THIS (succeeds)

import * as admin from 'firebase-admin';
admin.initializeApp();//add to here
import { getLocations, getLocationsByType } from

is not the same as

THIS (fails)

import * as functions from 'firebase-functions';
import * as admin from 'firebase-admin';
import { getLocations, getLocationsByType } from 
admin.initializeApp()

edited Jun 18, 2021 at 0:09

Dharman♦

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answered Jun 18, 2021 at 0:04

Denis Alarie 4RP

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Comments

Renaud Tarnec · Accepted Answer · 2020-02-17 14:09:49Z

It is difficult to say where exactly is your problem (and I am not 100% sure the following will solve it), but there is a mismatch between the way you import the required modules:

import * as functions from 'firebase-functions';
import ...
//.....

and the way you export the Cloud Function:

exports.findUsers = functions.https.onCall(...)

As you will read here, the import corresponds to a TypeScript Cloud Function, while the export corresponds to a JavaScript one.

You should align your code to the correct mode (JS or TS) depending on what you use (probably TS, since data and context are typed):

JavaScript:

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

exports.findUsers = functions.https.onCall(async (data, context) => {...]);

TypeScript:

import * as functions from 'firebase-functions';

export const findUsers = functions.https.onCall(async (data: any, context: any) => {...]);

Gavin Chebor · Accepted Answer · 2021-03-11 03:54:52Z

0

If you have modules files and have tried putting admin.initializeApp(); to no avail, then it's may be the file structure or mismatched imports

Check /functions/lib for updates after build, and if there is more than 1 functions/lib/**.js.map being generated

Check to see if you have both import admin = require('firebase-admin') and const admin = require('firebase-admin');

delete lib directory
Move your .ts .js script files from /functions/src/** and /functions/** to /functions/src/{folder}/** directory
Covert all const admin = require('firebase-admin'); to import admin = require('firebase-admin')
Rebuild & update the package.json main if need necessary
firebase serve to test locally

answered Mar 11, 2021 at 3:54

Gavin Chebor

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