const generateString = (length, chars) =>Array(length).fill('').map((v) => chars[Math.floor(Math.random() * chars.length)]).join('');
const generateString = (length: number, chars: string) =>Array(length).fill('').map((v) => chars[Math.floor(Math.random() * chars.length)]).join('');
generateString(10, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');