Different type information when using @typescript-eslint with a compat layer

[sheremet-va]

I wanted to introduce this library to the Vitest monorepo: vitest-dev/vitest#6884

But I cannot figure out the inconsistencies that I encountered and would appreciate some help:

Whatever I do in https://github.com/sheremet-va/vitest/blob/4b068e337c4782167c7aa4be59ad73ee2b96be9f/packages/spy/src/index.ts causes tsslint to think that I always return any even if I cast it or when the type is already known 🤔

[sheremet-va]

I don't know if this is an issue with the plugin itself or the language server 👀 Reoading the server didn't help, unfortunately