FIREBASE REST AUTH

index.js

const FIREBASE_API_KEY = process.env.FIREBASE_API_KEY;
const FIREBASE_EMAIL = process.env.FIREBASE_EMAIL;
const FIREBASE_PASSWORD = process.env.FIREBASE_PASSWORD;

const FIREBASE_AUTH_URL = `https://identitytoolkit.googleapis.com/v1/accounts:signInWithPassword?key=${ FIREBASE_API_KEY }`;

const method = "POST"
const body = {
 email: FIREBASE_EMAIL,
 password: FIREBASE_PASSWORD,
 returnSecureToken: true
}