class PhoneMask {
    static mask(value) {
        return value
            .replace(/\D/g, '')
            .replace(/(\d{2})(\d)/, '($1) $2')
            .replace(/(\d{4,5})(\d{4})/, '$1-$2')
            .replace(/(-\d{4})\d+?$/, '$1');
    }
}

function maskPhone(event) {
    event.target.value = PhoneMask.mask(event.target.value);
}