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React Router V5 vs V6
React Router version 6 was released, and it is important as it is one of the most widely used react libraries out there.
So What Is React Router ?
React Router is a fully-featured client and server-side routing library for React, a JavaScript library for building user interfaces. React Router runs anywhere React runs; on the web, on the server with node.js, and on React Native.
In V6, there has been a lot of under the hood changes, be it an enhanced path pattern matching algorithm or addition of new components. Not only that but the bundle size has been reduced by almost 58%.
So here are some of the changes you can make to upgrade an existing project from React Router v5 to v6.
Replacing Switch w/ Routes
In v6, Switch in not exported from react-router-dom. In the earlier version we could use Switch to wrap our routes, and code to make one of the route to load at a time. Now we use Routes to do the same thing instead of Switch.
Route Definition Changes
The component that should be rendered on matching a route can not be written as a child of the Route component, but it takes a prop called element where we have to pass a JSX component for that to be rendered.
The exact Prop Is Not Needed Anymore
With version 6, React Router has just become alot more awesome. There has been some changes under the hood, which enables us to match a particular route match without the exact prop. Earlier, without exact, any path starting with the concerned keyword would be loaded, as the matching process was done from top to down the route definitions. But now, we do not have to worry about that, as React Router has a better algorithm for loading the best route for a particular path, the order of defining does not really matters now.
So, to sum up these three points we can consider this code snippet.
In v5
import { Switch, Route, Link } from "react-router-dom";...<Switch> <Route path="/"> <Home/> </Route> <Route exact path="/cryptocurrencies"> <Cryptocurrencies/> </Route> <Route exact path="/crypto/:coinId"> <CryptoDetails/> </Route> <Route exact path="/exchanges"> <Exchanges /> </Route></Switch>In v6
import { Routes, Route, Link } from "react-router-dom";...<Routes> <Route path="/" element={<Home />} /> <Route path="/crypto/:coinId" element={<CryptoDetails />} /> <Route path="/cryptocurrencies" element={<Cryptocurrencies />} /> <Route path="/exchanges" element={<Exchanges />} /></Routes> No Need To Install react-router-config Seperately
react-router-config allowed us to define our routes as javascript objects, instead of React elements, and all it's functionalities have to moved in the core react router v6.
//V5import { renderRoutes } from "react-router-config";const routes = [ { path: "/", exact: true, component: Home }, { path: "/cryptocurrencies", exact: true, component: Cryptocurrencies }, { path: "/exchanges", exact: true, component: Exchanges }];export default function App() { return ( <div> <Router>{renderRoutes(routes)}</Router> </div> );}//V6function App() { let element = useRoutes([ // These are the same as the props you provide to <Route> { path: "/", element: <Home /> }, { path: "/cryptocurrencies", element: <Cryptocurrencies />, // Nested routes use a children property children: [ { path: ":coinId", element: <CryptoDetails /> }, ] }, { path: "/exchanges", element: <Exchanges /> }, ]); // The returned element will render the entire element // hierarchy with all the appropriate context it needs return element;} useHistory Is Now useNavigate
React Router v6 now has the navigate api, which most of the times would mean replacing useHistory to useNavigate.
//V5import { useHistory } from "react-router-dom";function News() { let history = useHistory(); function handleClick() { history.push("/home"); } return ( <div> <button onClick={()=>{ history.push("/home"); }}>Home</button> </div> );}//V6import { useNavigate } from "react-router-dom";function News() { let navigate = useNavigate(); return ( <div> <button onClick={()=>{ navigate("/home"); }}>go home</button> </div> );}Some more common features of useHistory were go, goBack and goForward. These can also be achieved by navigate api too, we just need to mention the number of steps we want to move forward or backward ('+' for forward and '-' for backward). So we can code these features we can consider this.
//V5import { useHistory } from "react-router-dom";function Exchanges() { const { go, goBack, goForward } = useHistory(); return ( <> <button onClick={() => go(-2)}> 2 steps back </button> <button onClick={goBack}>1 step back</button> <button onClick={goForward}>1 step forward</button> <button onClick={() => go(2)}> 2 steps forward </button> </> );}//V6import { useNavigate } from "react-router-dom";function Exchanges() { const navigate = useNavigate(); return ( <> <button onClick={() => navigate(-2)}> 2 steps back </button> <button onClick={() => navigate(-1)}>1 step back</button> <button onClick={() => navigate(1)}> 1 step forward </button> <button onClick={() => navigate(2)}> 2 steps forward </button> </> );} activeStyle and activeClassName Props Removed From <NavLink />
In the previous version we could set a seperate class or a style object for the time when the <NavLink/> would be active. In V6, these two props are removed, instead in case of Nav Links className and style props, work a bit differently. They take a function which in turn gives up some information about the link, for us to better control the styles.
//V5<NavLink to="/news" style={{ color: 'black' }} activeStyle={{ color: 'blue' }}> Exchanges</NavLink><NavLink to="/news" className="nav-link" activeClassName="active"> Exchanges</NavLink>//V6<NavLink to="/news" style={({isActive}) => { color: isActive ? 'blue' : 'black' }}> Exchanges</NavLink><NavLink to="/news" className={({ isActive }) => "nav-link" + (isActive ? "active" : "")}> Exchanges</NavLink> Replace Redirect with Navigate
Redirect is no longer exported from react-router-dom, instead we use can Navigate to achieve the same features.
//V5import { Redirect } from "react-router-dom";<Route exact path="/latest-news"> <Redirect to="/news"></Route><Route exact path="/news"> <News /></Route>//V6import { Navigate } from "react-router-dom";<Route path="/latest-news" element={<Navigate replace to="/news">} /><Route path="/news" element={<Home />} />Please note the replace prop passed inside the element of the Route. This signifies we are replacing the current navigation stack. Without replace it would mean we are just pushing the component in the existing navigation stack.
That's it for today. Hope this helps you upgrading your react project, to React Router V6.
Thank you for reading !!
Happy Coding !! Happy Building !!
Original Link: https://dev.to/arunavamodak/react-router-v5-vs-v6-dp0
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