Read a file to a Uint8Array

The Bun.file() function accepts a path and returns a BunFile instance. BunFile extends Blob, so you can read the file lazily in a variety of formats. To read the file into a Uint8Array, use .bytes().

const path = "/path/to/package.json";
const file = Bun.file(path);

const byteArray = await file.bytes();

byteArray[0]; // first byteArray
byteArray.length; // length of byteArray

See Typed arrays for more on working with Uint8Array and other binary data formats in Bun.