In React：Module not found: Can't resolve 'react-router-dom'

Question

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import * as React from 'react';
import Root from './Root';
import './App.css'
import {session} from './libs/session';
import {Redirect} from "react-router-dom";

export default class App extends React.Component {

    public componentWillMount() {
        console.log("componentWillMount App");
    }

    public componentDidMount() {
        console.log("componentDidMount App");
        console.log(window.location.search.replace(/\?/g,''));
        const urlParmes = window.location.search.replace(/\?/g,'');
        session.token = urlParmes.replace(/^token=/g,'');
    }


  public render() {
      if (session.token === '' || session.token === null || session.token === 'undefined') {
          console.log('no Jurisdiction');
          return (<Redirect to='/'/>);
      } else {
          console.log('has Jurisdiction')
      }
    return (
      <div className="App">
        <Root />
      </div>
    )
  }
}

My purpose is to detect 'token' and then redirect it to the login page. this is why? please help me. Thanks

Answer 1

The Router have to installed, I solved with the installation using the following command:

npm i react-router-dom --save