What is Firebase auth ()?

Firebase Authentication provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app . It supports authentication using passwords, phone numbers, popular federated identity providers like Google, Facebook and Twitter, and more.

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How do I use Firebase Auth REST API?

Connect your web app to Firebase, your REST API will handle the authentication by receiving the user credentials, then authenticating with the Firebase through the web APIs Password Authentication. Use the Firebase server SDK to generate custom authentication tokens, the token will be a JSON Web Token (JWT).14 Tem 2016

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