How to display a pop up for the first time user visit in a react application?

[CodHands]

How do I make a first visit popup for my react application? Is it possible to implement using the react-popup module? I used this module below but it does not seem to work. Can you check and let me know what wrong here.

Below is my homepage component

import React, {Component} from 'react';
import './HomePage.css';
import Carousel from 'nuka-carousel';
import HeaderComponent from '../../components/Header/Header.js';
import {Decorators} from './decorators.js';
import Popup from 'react-popup'

export default class HomePage extends Component {
redirectPage = () => {
window.location = '#/dashboard';
}

componentWillMount(){
Popup.alert('my component')
}

render() {
var mixins = [Carousel.ControllerMixin];
return ( //Component Carousel);
}
}