const S4 = () => (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
return (`${S4() + S4()}-${S4()}-${S4()}-${S4()}-${S4()}${S4()}${S4()}`);
}
const S4 = () => (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
return (`${S4() + S4()}-${S4()}-${S4()}-${S4()}-${S4()}${S4()}${S4()}`);
}