firebase import service throws error

10
votes

I'm using firebase functions and I want to initializeApp with service account key json into credential and I get the error

Argument of type '{ "type": string; "project_id": string; "private_key_id": string; "private_key": string; "client_...' is not assignable to parameter of type 'string | ServiceAccount'. Type '{ "type": string; "project_id": string; "private_key_id": string; "private_key": string; "client_...' has no properties in common with type 'ServiceAccount'.

my index.ts file

 import * as functions from 'firebase-functions'
import * as admin from 'firebase-admin'
import {serviceAccount} from './serviceAccount'

console.log(functions.config())
admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    databaseURL:functions.config().firebase
});

export const firestore = admin.firestore();
export const firebase = admin.database();

serviceAccount.ts

export const serviceAccount = {

    "type": "service_account",
    "project_id": "lxxxxxx",
    "private_key_id": "xxxxxx",
    "private_key": "-----BEGIN PRIVATE KEY-----xxxxxxx---END PRIVATE KEY-----\n",
    "client_email": "firebase-axxxxx-9b58b.iaxxxceaccount.com",
    "client_id": "xxxxx",
    "auth_uri": "https://accounts.google.com/o/xxxxx",
    "token_uri": "https://accounts.google.com/o/oxxxxn",
    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
    "clixxxxxx": "https://www.googleapis.com/robot/v1/metadataxxxxirebase-adminsdk-uxxxxxxrviceaccount.com"


}

the error in this line of code

        credential: admin.credential.cert(serviceAccount),
2
node.jsfirebasegoogle-cloud-functions

2 Answers

19
votes

I've experienced this too. The solution is to bring the type ServiceAccount and cast to that type the whole object imported from that json file.

import firebase from 'firebase' 
import * as firebaseAdmin from 'firebase-admin' 
import firebaseConfig from '../firebaseConfig.json' 
import firebaseAccountCredentials from '../serviceAccountCredentials.json'

const serviceAccount = firebaseAccountCredentials as admin.ServiceAccount

firebaseAdmin.initializeApp({
    credential: firebaseAdmin.credential.cert(serviceAccount),
    databaseURL: firebaseConfig.databaseURL 
});
3
votes

I'm not very experienced with TypeScript, but I think this will work as a temporary solution until someone proposes a better one.

let regularObj = {};
Object.assign(regularObj, serviceAccount);

admin.initializeApp({
  credential: admin.credential.cert(regularObj),
  databaseURL: functions.config().firebase
});