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.

Comienza revisando las APIs fs.openAsBlob y fs.createReadStream existentes y su documentación. Aclara la forma de la File API síncrona, los metadatos expuestos a Response y el comportamiento entre distintos runtimes antes de proponer un punto de entrada. Se considera terminado cuando el diseño de la API está acordado y su comportamiento está cubierto por pruebas y documentación.