@storm-stack/unique-identifier/dist/uuid.mjs

This package provides a simple way to generate various types of unique identifiers.

let index = 256;
const hex = [];
let buffer;
while (index--) {
  hex[index] = (index + 256).toString(16).slice(1);
}
export function uuid() {
  let i = 0;
  let num;
  let out = "";
  if (!buffer || index + 16 > 256) {
    buffer = Array.from({ length: i = 256 });
    while (i--) {
      buffer[i] = Math.trunc(256 * Math.random());
    }
    i = index = 0;
  }
  for (; i < 16; i++) {
    num = buffer[index + i];
    if (i === 6) {
      out += hex[num & 15 | 64];
    } else if (i === 8) {
      out += hex[num & 63 | 128];
    } else {
      out += hex[num];
    }
    if (i & 1 && i > 1 && i < 11) {
      out += "-";
    }
  }
  index++;
  return out;
}