I've asked v0 to refactor my codes according to Next.js best practices. It recommends index re-export, with barrel file, so there's no need to specify file extensions. I've tried

• export { Header } from "@/components/common/header"
• export { Header } from "./header"
• export { Header } from "header"

I've also asked v0 to fix tsconfig.json.

None of them worked. What's the right way to do this please?