JavaScript Code creating ID from time stamp with sha256

id.js

async function makeId(number){
	let bitMask1 = 0xffffffffffffffffffffffffffffffff00000000000000000000000000000000;
	let bitMask2 = 0x00000000000000000000000000000000ffffffffffffffffffffffffffffffff;
	let bitArray = new Uint32Array(2);

	bitArray[0] = bitMask1^number;
	bitArray[1] = bitMask2^number;

	let hashBuffer = await crypto.subtle.digest('sha-256',bitArray);
	let hashArray = Array.from(new Uint8Array(hashBuffer));
	let id = hashArray.map(b => b.toString(16)).join('');
	
	return id;
}

makeId(Date.now()).then((id)=>{console.log(id);});