Use firebase-functions for firebase v2 cloud functions

Question

How can I write these functions such that there work with v2.

const {onSchedule} = require("firebase-functions/v2/scheduler");
const {logger} = require("firebase-functions");
const {functions} = require("firebase-functions");

// The Firebase Admin SDK to access Firestore.
const {initializeApp} = require("firebase-admin/app");
const firebaseTools = require("firebase-tools");

initializeApp();

async function deletePath(path) {
  await firebaseTools.firestore
      .delete(path, {
        project: process.env.GCLOUD_PROJECT,
        recursive: true,
        force: true,
        token: functions.config().fb.token,
      });
}

The cloud console is giving me this error:

Error: functions.config() is no longer available in Cloud Functions for Firebase v2. Please see the latest documentation for information on how to transition to using environment variables

I have checked the documentation. There are some examples with onDocumentCreated. I could figure out how that could help me.

Answer 1

As mentioned by @Doug Stevenson:

You're supposed to replace the use of the old functions.config() with environment variables from the documentation you read. Use environment variables to access configuration values

const fbToken = process.env.FB_TOKEN; // Configure this as a variable in the environment

async function deletePath(path) {
  await firebaseTools.firestore
    .delete(path, {
      project: process.env.GCLOUD_PROJECT,
      recursive: true,
      force: true,
      token: fbToken,
    });
}

Then

Use firebase deploy --only functions to deploy v2 functions.

Reference:

• Configure your environment

• V2 and examples: Extend Cloud Firestore with Cloud Functions (2nd gen)