generateId() {
    
    
 const s = []
    const hexDigits = '0123456789abcdef'
    for (let i = 0; i < 36; i++) {
    
    
        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1)
    }
    s[14] = '4'
    s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1)
    s[8] = s[13] = s[18] = s[23] = '-'

    const uuid = s.join('')
    return uuid
}
console.log(generateId());