import { randomBytes } from 'crypto'

function generateUuid4(): string {
    const time = Date.now();
    const timeHex = time.toString(16).padStart(12, '0');
    const randomHex = randomBytes(4).toString('hex');
    const variant = '8'; // The variant for UUIDv4 is always '8'
    const version = '4'; // The version for UUIDv4 is always '4'
    return `${timeHex}-4${randomHex.substr(1, 3)}-${version}${randomHex.substr(4, 3)}-${variant}${randomHex.substr(7)}`;
}

console.log(generateUuid4())