Read file with new "using" keyword

read-file.ts

import fs from "fs/promises";

const getFileResource = async (path: string) => {
  const fileResource = await fs.open(path, "r");
  return {
    fileResource,
    [Symbol.asyncDispose]: async () => {
      await fileResource?.close();
      console.log("Cleanup done");      
    },
  };
};

(async () => {
  await using fileResource = getFileResource('file.txt');
})(); // File will be automatically be closed when `fileResource` leaves the scope