Types of CSS modules

It's not clear to me how currently should types be declared for CSS modules.
For the context, I'm using Gatsby v3 with TypeScript and an example import would be:

import { Header } from './header.module.css';

However, the old style index.d.ts I had won't be suitable anymore since default exports were replaced with tree-shakeable variables:

declare module '*.module.css' {
  const value: { [className: string]: string };
  export default value;
}

That pretty much now ends up in this error:

 Module '"*.module.css"' has no exported member 'Header'. Did you mean to use 'import Header from "*.module.css"' instead?

I'm not sure how this can be handled in the latest version?

Start with the reported named import and the existing index.d.ts declaration, then reproduce the Gatsby v3 and TypeScript error described in the issue. Compare the declaration with the CSS module export behavior and determine whether the supported approach needs documentation or a project change; done when the correct declaration pattern is clear and verified.