firebaseui doesn't work with sessionStorage when localStorage unavailable

[skouny]

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• Operating System version: Android 14.0.0
• Browser version: Android WebView 122.0
• Firebase UI version: 6.1
• Firebase SDK version: 10.8

When localStorage unavailable doesn't work with sessionStorage

setPersistence was set to browserSessionPersistence before FirebaseUI init

[jhuleatt]

Hi @skouny, this is interesting. FirebaseUI checks for both sessionStorage and localStorage:

https://github.com/firebase/firebaseui-web/blob/5ff6fde2324d95d976e35ef1986ac5f241d3774e/javascript/utils/storage.js#L84-L87

However, it only seems to use sessionStorage and cookies, without any localStorage at all:

https://github.com/firebase/firebaseui-web/blob/5ff6fde2324d95d976e35ef1986ac5f241d3774e/javascript/utils/storage.js#L94-L119

Taking away the localStorage check seems like the right move to me. The codebase will need another look to confirm that localStorage really isn't used, though. I'll mark this as a bug.