React Redux forms validators

React Redux forms validators

const required = value => (value || typeof value === 'number' ? undefined : 'Required');
const maxLength = max => value =>
    value && value.length > max ? `Must be ${max} characters or less` : undefined;
const maxLength15 = maxLength(15);
export const minLength = min => value =>
    value && value.length < min ? `Must be ${min} characters or more` : undefined;
export const minLength2 = minLength(2);
const number = value =>
    value && isNaN(Number(value)) ? 'Must be a number' : undefined;
const minValue = min => value =>
    value && value < min ? `Must be at least ${min}` : undefined;
const minValue13 = minValue(13);
const email = value =>
    value && !/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i.test(value)
        ? 'Invalid email address'
        : undefined;
const tooYoung = value =>
    value && value < 13
        ? 'You do not meet the minimum age requirement!'
        : undefined;
const aol = value =>
    value && /.+@aol\.com/.test(value)
        ? 'Really? You still use AOL for your email?'
        : undefined;
const alphaNumeric = value =>
    value && /[^a-zA-Z0-9 ]/i.test(value)
        ? 'Only alphanumeric characters'
        : undefined;
export const phoneNumber = value =>
    value && !/^(0|[1-9][0-9]{9})$/i.test(value)
        ? 'Invalid phone number, must be 10 digits'
        : undefined;