Sync alternative to `fs.openAsBlob`

What is the problem this feature will solve?

I'm making a cross-runtime file streaming library (that needs to be fast) and this would make it way easier to do so since Bun.file() is already sync.

So the code might look like this if my suggestion made it to node:fs:

const getFile: (path: string) => File = globalThis.Bun
  ? Bun.file
  : process.getBuiltinModule('fs').openAsWebFile;

// Usage
return new Response(getFile('./index.html'));
return new Response(getFile('./binary-data').slice(0, 100));

What is the feature you are proposing to solve the problem?

A new API, something like fs.openAsWebFile() that returns a File maybe?
It would have more info for the Response constructor to pick up as well.

What alternatives have you considered?

fs.createReadStream but that is also async and can be slower too.

まず、既存の fs.openAsBlob API と fs.createReadStream API、およびそれらのドキュメントを確認します。エントリーポイントを提案する前に、同期 File API の形状、Response に公開されるメタデータ、ランタイム間の動作を明確にします。API 設計について合意され、その動作がテストとドキュメントでカバーされれば完了です。