Clear and concise description of the problem

The vi.mocked type helper currently only supports partials at the surface level. If the return type of a function contains nested objects, there's no way to do a deep/recursive partial. This can require mocking a lot of unnecessary fields.

Particularly with APIs that return a tuple of a success object and an error (eg: [data, err]). The partial flag doesn't really do anything here, data must still be fully mocked to pass the type checks.

Suggested solution

I would be happy to send in a PR to add support for a DeepPartial. I would be looking for some guidance on what the ideal API for that would be in the options object of vi.mocked. I had originally expected setting { partial: true, deep: true } to do what I'm describing, so it's going to be tricky to add a flag that's clear in what it does and what separates it from the existing flags.

Alternative

No response

Additional context

No response

Validations

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