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A screenshot that you have tested with "Try this API".

Hi maintainers 👋

After upgrading googleapis from version ^149.0.0 to 150.0.1, I ran into a TypeScript type error related to the auth property when initialising the webmasters API.

Link to the code that reproduces this issue. A link to a public Github Repository or gist with a minimal reproduction.

https://gist.github.com/Towerss/c4885527a8ddc5e66c4cffa543398d19

A step-by-step description of how to reproduce the issue, based on the linked reproduction.

Run tsc to see the typing error.

A clear and concise description of what the bug is, and what you expected to happen.

After upgrading from googleapis@^149.0.0 to 150.0.1, TypeScript no longer accepts a GoogleAuth instance as a valid auth parameter when initializing the webmasters API client.

This code worked previously:

const auth = new GoogleAuth<JSONClient>({
  keyFile: 'path/to/key.json',
  scopes: ['https://www.googleapis.com/auth/webmasters'],
});

const searchConsole = google.webmasters({ version: 'v3', auth }); // ✅ worked in v149.x

But now produces a type error in v150.0.1:

Type 'GoogleAuth' is not assignable to type 'GoogleAuth'
Property '#private' in type 'GoogleAuth' refers to a different member that cannot be accessed from within type 'GoogleAuth'

A clear and concise description WHY you expect this behavior, i.e., was it a recent change, there is documentation that points to this behavior, etc. **

googleapis.webmasters should allow passing GoogleAuth as the auth parameter, as it was supported in earlier versions and is the type returned from the current google-auth-library.