"firebase.auth(...).verifyIdToken is not a function"

[Mark Pfeffer]

Hi,

I'm trying to authenticate users on my node app by sending a token from my client to my server.

I'm using the steps here: https://firebase.google.com/docs/auth/server/verify-id-tokens

Here is my client-side code: 

$("#form-login").submit(function(){

  var email = $("#form-login input[name='username']").val()

  var password = $("#form-login input[name='password']").val()

  firebase.auth().signInWithEmailAndPassword(email, password).catch(function(error) {

    // Handle Errors here.

    var errorCode = error.code;

    var errorMessage = error.message;

    // ...

  });

  firebase.auth().currentUser.getToken(/* forceRefresh */ true).then(function(idToken) {

    // Send token to your backend via HTTPS

    console.log(idToken)

    $.ajax({

      type: "POST",

      url: "/authenticate",

      data: {"idToken": idToken},

      dataType: "json",

      success: function(result){

        console.log(result)

      }

    });

    // ...

  }).catch(function(error) {

    // Handle error

  });

  return false

})

console.log(idToken) returns a string.

My server-side code:

app.post('/authenticate', function(req, res){

  var idToken = req.body.idToken

  console.log(idToken)

  firebase.auth().verifyIdToken(idToken).then(function(decodedToken) {

    var uid = decodedToken.uid;

    console.log(uid)

    // ...

  }).catch(function(error) {

    // Handle error

    console.log(error)

  });

})

This is the response I get:

POST /authenticate 500 5.289 ms - 1151

TypeError: firebase.auth(...).verifyIdToken is not a function

Don't really know where to look from here. I copied the docs exactly. Any ideas?

Much appreciated.

[Bassam]

Hey Mark,

You are probably not instantiating an admin auth instance on your backend:

var firebase = require("firebase");

// Admin instance initialized with a service account.

var adminConfig = {

  serviceAccount: "serviceAccountCredentials.json"

}

var adminApp = firebase.initializeApp(adminConfig, 'admin');

adminApp.auth().verifyIdToken(idToken).then...

[Jacob Wenger]

Bassam is exactly correct. You can read more details of how this work here.

Cheers,
Jacob

--
You received this message because you are subscribed to the Google Groups "Firebase Google Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to firebase-talk+unsubscribe@googlegroups.com.
To post to this group, send email to fireba...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/firebase-talk/1bb8df36-9096-431c-b49a-fc5e92100f0e%40googlegroups.com.

For more options, visit https://groups.google.com/d/optout.