One App Router keeps your UI in sync with the URL. It has a simple API with powerful features like lazy code loading, dynamic route matching, and location transition handling built right in. Make the URL your first thought, not an after-thought.
One App Router was forked from react-router@3 and is being uplifted to work with react@17.
The reason for forking react-router@3, rather than switching to a different router or upgrading to a newer version, is due to the coupling of react-router@3's API with One App, Holocron and existing One App modules.
We want to ensure that One App will be compatible with react@17, in its current state react-router@3 relies on React's legacy context API, which will be removed in react@17, as well as legacy UNSAFE lifecycle methods.
Updating to the new context API would be considered a breaking change as react-router would no longer be compatible with older versions of react@<16.3.0. The react-router project has already moved to v5 therefore it is not possible to make any breaking changes to react-router@3.
We will evaluate moving to react-router@6 if it matches our use case in the future.
This is not meant to be a generic standalone Routing library but one which will be tailored for use with the One ecosystem.
- Keeps your UI in sync with the URL
- Lazy code loading
- Dynamic route matching
- Location transition handling
$ npm install @americanexpress/one-app-router
Then with a module bundler like webpack that supports either CommonJS or ES2015 modules, use as you would anything else:
// using an ES6 transpiler, like babel
import { Router, Route, Link } from '@americanexpress/one-app-router'
// not using an ES6 transpiler
var Router = require('@americanexpress/one-app-router').Router
var Route = require('@americanexpress/one-app-router').Route
var Link = require('@americanexpress/one-app-router').Linkimport React from 'react';
import { render } from 'react-dom';
import { Router, Route, Link, browserHistory } from '@americanexpress/one-app-router';
function App() {/*...*/}
function About() {/*...*/}
function NoMatch() {/*...*/}
async function getUsersFragment() {/*...*/}
async function findUserById() {/*...*/}
function Users({ children }) {
const [users, setUsers] = React.useState([]);
React.useEffect(() => {
getUsersFragment().then(setUsers);
}, []);
return (
<div>
<h1>Users</h1>
<div className="overview">
<ul>
{/* use Link to route around the app */}
{users.map(user => (
<li key={user.id}>
<Link to={`/user/${user.id}`}>{user.name}</Link>
</li>
))}
</ul>
</div>
<div className="detail">
{children}
</div>
</div>
);
}
function User({ params }) {
const [user, setUser] = React.useState(null);
React.useEffect(() => {
findUserById(params.userId).then(setUser);
}, []);
return user && (
<div>
<h2>{user.name}</h2>
{/* etc. */}
</div>
);
}
// Declarative route configuration (could also load this config lazily
// instead, all you really need is a single root route, you don't need to
// colocate the entire config).
render((
<Router history={browserHistory}>
<Route path="/" component={App}>
<Route path="about" component={About}/>
<Route path="users" component={Users}>
<Route path="/user/:userId" component={User}/>
</Route>
<Route path="*" component={NoMatch}/>
</Route>
</Router>
), document.getElementById('root'))See more in the Introduction, Guides, and Examples.
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