// create a SharedArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(8);
const uint8 = new Uint8Array(buffer);

// Copy the values into the array starting at index 3
uint8.set([1, 2, 3], 3);

console.log(uint8);
// expected output: Uint8Array [0, 0, 0, 1, 2, 3, 0, 0]