Alice.js

import React, { Component } from 'react';

class Alice extends Component {

  constructor(props) {
    super(props)
    this.state = {
      greeting: props.newMsg
    }
  }

  render() {
    return (
      <div>
        <h2> {this.state.greeting} </h2>
      </div>
    );
  }
}

export default Alice;