How can I get a valid Firebase user JWT token - firebase

Question

Given that I have a Firebase project, but no development environment that supports the Firebase SDK, how can I get a valid Firebase JWT for one of the users in the Firebase project? I am able to create cloud functions in the project, and I tried making a function for this (in TypeScript), but to no avail:
import * as functions from "firebase-functions";
import * as admin from "firebase-admin";
admin.initializeApp();
export const login = functions.https.onRequest((req, res) => {
const email: string = req.query.email || req.body.email;
const password: string = req.query.password || req.body.password;
admin.auth().signInWithEmailAndPassword(email, password);
admin.auth().currentUser.getIdToken(true).then((idToken: any) => {
functions.logger.info("token: " + idToken, {structuredData: true});
res.status(200).send(idToken);
}).catch((error: any) => {
functions.logger
.info("could not get token: " + error, {structuredData: true});
res.status(500).send(error);
});
});
This code wont deploy due to these errors:
Property 'signInWithEmailAndPassword' does not exist on type 'Auth'.
Property 'currentUser' does not exist on type 'Auth'.

Answer 1

Here's the JS script I got from a colleague for this:
// Import the functions you need from the SDKs you need
const { initializeApp } = require("firebase/app");
const { getAuth, signInWithEmailAndPassword } = require("firebase/auth");
// Your web app's Firebase configuration
// For Firebase JS SDK v7.20.0 and later, measurementId is optional
const firebaseConfig = {
apiKey: "API-key-here",
authDomain: "my-app.firebaseapp.com",
databaseURL: "https://my-app-default-rtdb.firebaseio.com",
projectId: "my-app",
storageBucket: "my-app.appspot.com",
messagingSenderId: "sender-id-here",
appId: "app-id-here",
measurementId: "measurement-id-here"
};
const app = initializeApp(firebaseConfig);
const auth = getAuth();
signInWithEmailAndPassword(auth, "user#example.com", "user-password-here")=
.then((userCredential) => {
console.log(userCredential.user.accessToken);
})
.catch((error) => {
console.log(error.message);
});