The prop `history` is marked as required in `Router`, but its value is `undefined`. in Router
I am new to ReactJs. This is my code:
var React = require('react');
var ReactDOM = require('react-dom');
var {Route, Router, IndexRoute, hashHistory} = require('react-router');
var Main = require('Main');
ReactDOM.render(
<Router history={hashHistory}>
<Route path="/" component={Main}></Route>
</Router>, document.getElementById('app'));
and compiling it with webpack. Also I added Main component to my aliases. The console throws these errors: I also read these links :
React Router failed prop 'history', is undefined
How do I resolve history is marked required, when value is undefined?
Upgrading React-Router and replacing hashHistory with browserHistory
and many searches around the web, but I couldn't fix this issue. React Router is version 4
Solution 1:
If you are using react-router v4 you need to install react-router-dom as well. After that, import BrowserRouter from react-router-dom and switch Router for BrowserRouter. It seems that v4 change several things. Also, the react-router documentation is outdated. This is my working code:
import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter, Route } from 'react-router-dom'
import App from './components/App';
ReactDOM.render((
<BrowserRouter>
<Route path="/" component={App}/>
</BrowserRouter>
),
document.getElementById('root')
);
Source
Solution 2:
Which version of React Router are you using? Router version 4 changed from passing in the browserHistory class to passing an instance of browserHistory, see the code example in the new docs.
This has been catching lots people who automatically upgrade; a migration document will be out 'any day now'.
You want to add this to the top:
import { createBrowserHistory } from 'history'
const newHistory = createBrowserHistory();
and
<Router history={newHistory}/>
Solution 3:
If you want to have multiple routes you can use switch like this,
import {Switch} from 'react-router';
then
<BrowserRouter>
<Switch>
<Route exact path="/" component={TodoComponent} />
<Route path="/about" component={About} />
</Switch>
</BrowserRouter>
Solution 4:
I got the same problem in ES6, but when I switched to use 'react-router-dom' library, the problem was solved. For all fans of ES6, here we go:
npm install --save react-router-dom
In index.js:
import {HashRouter, Route} from 'react-router-dom';
import App from './App';
ReactDOM.render(
<HashRouter>
<Route path="/" component={App}/>
</HashRouter>
,
document.getElementById('root')
);
Solution 5:
Version 4 of React Router changed several things. They made separate top level router elements for the different history types. If you're using version 4 you should be able to replace <Router history={hashHistory}>
with <HashRouter>
or <BrowserRouter>
.
For more detail, see https://reacttraining.com/react-router/web/guides