renderJsonData.js

import React, { Component } from 'react';

class App extends Component {
  // class content
  render(){
    const users = [
      { name: 'Nathan', age: 25 },
      { name: 'Jack', age: 30 },
      { name: 'Joe', age: 28 },
    ];

    return (
      <ul>
        {users
          .map(user => <li>{user.name}</li>)
        }
      </ul>
    )
  }
}