@mousepox/util
Version:
Miscellaneous utilities
15 lines (14 loc) • 738 B
JavaScript
const lut = [];
for (let i = 0; i < 256; i++) {
lut[i] = (i < 16 ? "0" : "") + (i).toString(16);
}
export function generateUUID() {
const d0 = Math.random() * 0xffffffff | 0;
const d1 = Math.random() * 0xffffffff | 0;
const d2 = Math.random() * 0xffffffff | 0;
const d3 = Math.random() * 0xffffffff | 0;
return lut[d0 & 0xff] + lut[d0 >> 8 & 0xff] + lut[d0 >> 16 & 0xff] + lut[d0 >> 24 & 0xff] + "-" +
lut[d1 & 0xff] + lut[d1 >> 8 & 0xff] + "-" + lut[d1 >> 16 & 0x0f | 0x40] + lut[d1 >> 24 & 0xff] + "-" +
lut[d2 & 0x3f | 0x80] + lut[d2 >> 8 & 0xff] + "-" + lut[d2 >> 16 & 0xff] + lut[d2 >> 24 & 0xff] +
lut[d3 & 0xff] + lut[d3 >> 8 & 0xff] + lut[d3 >> 16 & 0xff] + lut[d3 >> 24 & 0xff];
}