Types: Add firebase type ref

[ShaMan123]

https://www.typescriptlang.org/docs/handbook/triple-slash-directives.html#-reference-types-

Did my best to infer types from code.

[bojeil-google]

Hey @ShaMan123, thanks for the contribution! Can you get this to work without the default namespace in firebase.default? The public types are defined as firebase.auth.UserCredential instead of firebase.default.auth.UserCredential.

[ShaMan123]

That's what I thought but the compiler throws an error without .default It seems a firebase issue

[bojeil-google]

That's what I thought but the compiler throws an error without .default It seems a firebase issue

The problem is if we accept this, it could be a breaking change as it may not match the existing public types.

[ShaMan123]

I disagree. Why would it be breaking? And why would it mismatch?

[bojeil-google]

I disagree. Why would it be breaking? And why would it mismatch?

Hmm, I take that back as the underlying types should match, but we'd want to test this to confirm nothing unexpected surfaces. Regardless, can you open an issue in the firebase-js-sdk repo about the.default types?

[ShaMan123]

Opened issue

[ShaMan123]

What you think about defining local types at the top of the file so it can be easily maintained, so you can merge and fix later on?

type Auth = firebase.default.auth.Auth;