FR: Support MFA on macOS

[Lyokone]

Feature proposal

• Firebase Component: Auth

Currently, the SDK supports auth on macOS but is missing MFA (as stated here for example)

Supporting macOS for those functions would help bring feature parity between iOS and macOS

[nidegen]

This would also bring support for phone auth on macOS, right? See also #8221

[cbenhagen]

@paulb777 according to https://firebase.google.com/docs/ios/learn-more#firebase_library_support_by_platform Authentication is fully supported on macOS. Can you share some insights when we can expect feature parity?

[paulb777]

@cbenhagen Sorry for the confusion here. As you've noticed, there are missing Authentication APIs for macOS and I can't say anything about release plans.

In the meantime, we'll improve the documentation.

[cbenhagen]

@paulb777 do you have any news on this? How can we move forward with this? Can we break it down into two steps for TOTP and SMS based authentication? What about passkeys? I am happy to help move this forward but would require some guidance.

[paulb777]

@cbenhagen Thanks for reaching out. For some APIs, macOS support may be a matter of updating ifdefs, build configurations, running tests, and maybe minor code changes. We can help with reviewing and merging PRs that fall into this category.