block12.jsx

// src/components/App/index.js

import React, { Component } from "react";
import classNames from 'classnames';
import { validatePhone } from 'input-validator-lib';

import "src/assets/stylesheets/base.scss";


class App extends Component {
  constructor(props) {
    super(props);

    this.state = {
      inputError: false,
      phoneNumber: ""
    };
  }

  handleChange(phoneNumber) {
    const inputError = !validatePhone(phoneNumber);
    this.setState({
      inputError,
      phoneNumber,
    });
  }