const validations = {
    address: (street, postcode, city) => {
        if (street && postcode && city) {
            return S.Right(`${street}, ${postcode}, ${city}`)
        }
        return S.Left(`Incorrect address provided (${street}, ${postcode}, ${city})`);
    },
    email: (email) => {
        if (/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/.test(email)) {
            return S.Right(email);
        }
        return S.Left(`Incorrect email address provided (${email})`);
    }
}

const register = function (email, street, postcode, city) {
    const result = S.sequence(
        S.Right,
        [
            validations.email(email),
            validations.address(street, postcode, city)
        ]
    );

    if (S.isRight(result)) {
        console.log('Registered!');
    } else {
        console.warn('Error found', result.value);
    }
}

register();
register('test');
register('test@email.com');
register('test@email.com', 'a');
register('test@email.com', 'a', 'b');
register('test@email.com', 'a', 'b', 'c');