pure component in reactjs code example

Example 1: pure components

// index.js
import { Router } from 'react-router-dom'
import history from './history'
import App from './App'

ReactDOM.render((
  
    
  
), holder)

Example 2: pure components

// history.js
import { createBrowserHistory } from 'history'

export default createBrowserHistory({
  /* pass a configuration object here if needed */
})