const n = Math.random() * 0x1_0000_0000 >>> 0;n.toString(16).padStart(8, "0");const hex = "0123456789abcdef";
hex[n >> 28 & 0xf] + hex[n >> 24 & 0xf] +
hex[n >> 20 & 0xf] + hex[n >> 16 & 0xf] +
hex[n >> 12 & 0xf] + hex[n >> 8 & 0xf] +
hex[n >> 4 & 0xf] + hex[n & 0xf];