Issues handling merge conflicts when upgrading anonymous users with V9 compat

[mkomaiha]

• Operating System version: macOS Monterey 12.2.1
• Browser version: Chrome Version 98.0.4758.109
• Firebase UI version: 6.0.1
• Firebase SDK version: 9.6.7 (Compatibilty Mode)
• React Firebase UI version: 6.0.0

This is in regards to handling anonymous-upgrade-merge-conflict. Before updating to 6, I was on firebaseui 5.0 and firebase 8.x. Merge conflicts in the signInFailure would return the error.credentials

signInFailure: (error) => {
    // For merge conflicts, the error.code will be
    // 'firebaseui/anonymous-upgrade-merge-conflict'.
    if (
      error.code != "firebaseui/anonymous-upgrade-merge-conflict"
    ) {
      return Promise.resolve();
    }
    console.log(error.credential) // null
    // ... merge logic
}

I looked through some of the code and this seems to be an issue with firebaseui.js. The object no longer contains a credentials value as shown below

Instead there is a customData key with the _tokenResponse that contains the IdToken

[volkerp]

• Operating System version: Linux opensuse
• Browser version: Chromium 101.0.4951.54 (openSUSE Build) stable (64-bit)
• Firebase UI version: 6.0.1
• Firebase SDK version: 9.8.1 (Compatibilty Mode)

I'm facing the same problem. error.credential == null when using Google login/auth-provider, works as expected with email login/auth-provider. I also suspect the error is related to the compat libraries.

[bhr]

Hitting this issue too. Did you find any any workaround @volkerp ?

[volkerp]

Hitting this issue too. Did you find any any workaround @volkerp ?

Unfortunately no. My hunch is that the compat mode is not as compatible as it claims to be. At this time I'm wondering if the whole project is still active.