javascript - TypeError: Cannot read property 'credential' of undefined with firebase reauthenticateWithCredentia

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Not exactly sure what I am doing wrong here, I have looked at other forum post and this is what they say to do to re-auth a user. But I am getting an error of:

TypeError: Cannot read property 'credential' of undefined on this line here:

const credentials = fire.auth.EmailAuthProvider.credential(currentUser.email, user.currentPass);

Here is the code:

 const currentUser = fire.auth().currentUser;
 const credentials = fire.auth.EmailAuthProvider.credential(currentUser.email, user.currentPass);
 currentUser
  .reauthenticateWithCredential(credentials)
  .then(() => {
    alert('Success');
  })
  .catch(err => {
    alert(err);
  });

Not exactly sure what I am doing wrong here, I have looked at other forum post and this is what they say to do to re-auth a user. But I am getting an error of:

TypeError: Cannot read property 'credential' of undefined on this line here:

const credentials = fire.auth.EmailAuthProvider.credential(currentUser.email, user.currentPass);

Here is the code:

 const currentUser = fire.auth().currentUser;
 const credentials = fire.auth.EmailAuthProvider.credential(currentUser.email, user.currentPass);
 currentUser
  .reauthenticateWithCredential(credentials)
  .then(() => {
    alert('Success');
  })
  .catch(err => {
    alert(err);
  });

• javascript
• firebase
• firebase-authentication

Share Improve this question Follow edited Jan 15, 2018 at 21:34 Taylor Austin asked Jan 15, 2018 at 21:19 Taylor AustinTaylor Austin 6,0271616 gold badges6363 silver badges108108 bronze badges 10

• How are you defining fire here? – bojeil Commented Jan 15, 2018 at 22:25
• const fire = firebase.initializeApp(config);, Everything else is working for the fire part, like the currentUser works just fine etc... – Taylor Austin Commented Jan 15, 2018 at 22:37
• 1 That explains it. Update the above to: firebase.auth.EmailAuthProvider.credential(...). – bojeil Commented Jan 16, 2018 at 0:54
• 4 It is not the same thing. If you are doing: const firebase = require('firebase'); you should use firebase.auth.EmailAuthProvider. This is defined under the firebase namespace. It is not an instance method. – bojeil Commented Jan 16, 2018 at 19:13
• 1 @Rai checkout my answer – somejhereandthere Commented Nov 1, 2018 at 16:34

 |  Show 5 more ments

3 Answers 3

Sorted by: Reset to default 4

Like @bojeil answered, it's a namespace so, for instance and if you're using typescript and you used firebase.initializeApp(config); in another class, just add again the import in the class where you user the credential method with import * as Firebase from 'firebase/app';

As u can see in the doc credential it's a static method in a static class that's why you need the namespace.

You've imported firebase in the wrong way. Here is what it says in the document. Official Document

const firebase = require('firebase');
const cred = firebase.auth.EmailAuthProvider.credential(
    email,
    password
);

I had the same issue as you and none of these answers helped me.

This worked for me:

const cred = fire.firebase_.auth.EmailAuthProvider.credential(email, password);

I'm not entirely sure why, but I just tried all the options available on fire in the dev tools until I came across firebase_ which had the option of EmailAuthProvider. Maybe someone else here knows why.

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