If you’re using firebase-tools as a module, you can get the refresh token of a user by

import { getGlobalDefaultAccount } from "firebase-tools/lib/auth.js";
const account = getGlobalDefaultAccount();
console.log(account.tokens.refresh_token);

I’m looking for a way to use the logged in user’s(firebase-tools) refresh token as the credential for the Firebase Admin SDK. Something like:

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

const admin = initializeApp({
  credential: refreshToken(account.tokens.refresh_token),
});

I’ve tried running the code snippet above, but it looks like the refreshToken method interprets the account.tokens.refresh_token as a path to a file(maybe because it’s a string). So I tried changing it to an object like so:

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

const admin = initializeApp({
  credential: refreshToken({
    refresh_token: account.tokens.refresh_token,
  }),
});

However, it’s now raising an error stating that it’s missing the client_secret and client_id properties, which the account object does not have. AFAIK, only service accounts have those.