Защита от спама формы на AjaxForm

import extend from 'extend'

/**
 * Class Validator.
 *
 * @class      Validator
 */
export default class Validator {

    /**
     * Constructs the object.
     *
     * @param      {Object}  config  The configuration
     */
    constructor (config) {
        if (config === undefined) {
            config = this.defaults
        }

        this.config = extend(this.defaults, config)
    }

    /**
     * Get the default config
     *
     * @return     {Object}
     */
    get defaults () {
        return {
            styles: {
                success: {
                    borderColor: '#4CAF50',
                    boxShadow: 'inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(76, 175, 80, 0.6)',
                },
                error: {
                    borderColor: '#E91E63',
                    boxShadow: 'inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(233, 30, 99, 0.6)',
                },
            },
            rules: {
                name (value) {
                    return value.length > 1
                },
                phone (value) {
                    return value.match(/\+7 \(\d\d\d\) \d\d\d-\d\d-\d\d/)
                }
            }
        }
    }

    /**
     * Pass the validation
     *
     * @param      {HTMLElement}  el
     */
    pass (el) {
        this.setStyle(el, this.config.styles.success)
    }

    /**
     * Fail the validation
     *
     * @param      {HTMLElement}  el
     */
    fail (el) {
        this.setStyle(el, this.config.styles.error)
    }

    /**
     * Check the value
     *
     * @param      {Event}  e
     */
    check (e) {
        return this.config.rules[e.target.name](e.target.value)
            ? this.pass(e.target)
            : this.fail(e.target)
    }

    /**
     * Sets the style.
     *
     * @param      {HTMLElement}  el
     * @param      {Object}       styles  The styles
     */
    setStyle (el, styles) {
        Object.keys(styles).forEach(prop => {
            el.style[prop] = styles[prop]
        })
    }
}

        const vally = new Validator(),

        validate = (e) => {
            vally.check(e)
        },

        initForm = () => {
            textMask({
                inputElement: phoneInput,
                mask: ['+', '7', ' ', '(', /[1-9]/, /\d/, /\d/, ')',
                    ' ', /\d/, /\d/, /\d/, '-', /\d/, /\d/, '-', /\d/, /\d/],
            })

            phoneInput.removeEventListener('keyup', validate)
            phoneInput.addEventListener('keyup', validate)

            nameInput.removeEventListener('keyup', validate)
            nameInput.addEventListener('keyup', validate)
        }

<input type="hidden" name="surname" class="form-input" placeholder="Фамилия">