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Please consider this eslint config:

// @ts-check
import turbo from 'eslint-config-turbo/flat';
import tseslint from 'typescript-eslint';

export default tseslint.config(
  ...turbo,
  {
    // ...other irrelevant config
  }
);

It reports this error:

Argument of type '{ plugins: { turbo: typeof plugin; }; rules: { "turbo/no-undeclared-env-vars": string; }; }' is not assignable to parameter of type 'InfiniteDepthConfigWithExtends'.
  Types of property 'rules' are incompatible.
    Type '{ "turbo/no-undeclared-env-vars": string; }' is not assignable to type 'Partial<Record<string, RuleEntry>>'.
      Property '"turbo/no-undeclared-env-vars"' is incompatible with index signature.
        Type 'string' is not assignable to type 'RuleEntry | undefined'.ts(2345)

There's not much I can do about this. The string it complains about, happens to be 'error', so I don't understand:

1. Why isn't it imported more strictly so that it matches the expected type?
2. What am I supposed to do about this?

So I can't just do turbo as ConfigWithExtends or whatever, because ESLint requires the config to be a javascript file. So in fact there's literally nothing I can add to make typescript understand what it's importing.

And also, I'm not the author of eslint-config-turbo so I can't just add typings to it. But moreover, you can't expect every author of every eslint config package to provide their typings.

Afaict, this is placing me between a rock and a hard place. What do I do?

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