enhancer.jsx

import React from 'react';
import { connect } from 'react-redux';

export const withBehavior = Component => connect()(
  class extends React.Component {
    
    func = () => console.log('this is hoc')

    render() {
      return (
        <Component
          func={this.func}
        />
      );
    }
  },
);

regexUtils.js

/**
 * param "/first/second/../last"
 * return "first"
 */
export const getFirstPath = pathname => pathname.match(/^\/([^/]*).*$/)[1];

/**
 * param "/first/second/../last"
 * return "last"
 */
export const getLastPath = pathname => pathname.match(/([^/]+)\/?$/)[1];

/**
 * param 絵文字を含む文字列
 * return 絵文字を除外した文字列
 */
export const removeEmoji = (input) => {
    const regEmoji = new RegExp(/[\u2700-\u27BF]|[\uE000-\uF8FF]|\uD83C[\uDC00-\uDFFF]|\uD83D[\uDC00-\uDFFF]|[\u2011-\u26FF]|\uD83E[\uDD10-\uDDFF]/, 'g');
    return input.replace(regEmoji, '')
}