Error: Auth.sendsigninlinktoemail Is Not A Function

const firebase = require('firebase-admin'); const auth=firebase.auth(); // create user in firebase data var actionCodeSettings = { // URL you want to redirect back to. Th

Solution 1:

Sending emails and SMS messages to a user with Firebase Authentication is only possible with the client-side SDKs.

You're using the Admin SDK, which does not have this functionality, as it would be too prone to abuse.

So you will have to implement this functionality in the client-side application code, using the regular client-side/Web SDK for Firebase Authentication.