There are several use cases typescript/no-unused-vars does not yet support, such as type declarations:

type Foo = string;
// unexpected error
const foo: Foo = 'foo';

Would it be possible to track the status of this somewhere in the documentation? The docs for typescript/no-unused-vars do not make any mention of this.

I would be happy to raise a PR, but I don't know the full details of what is and isn't supported.