Deno.readFileSync
Synchronously reads and returns the entire contents of a file as an array
of bytes. TextDecoder can be used to transform the bytes to string if
required. Reading a directory returns an empty data array.
const decoder = new TextDecoder("utf-8");
const data = Deno.readFileSync("hello.txt");
console.log(decoder.decode(data));
Requires allow-read permission.
function readFileSync(path: string | URL): Uint8Array;