Route

Route is a declarative component that defines route patterns and their corresponding components inside a Router.

import { Route, Router } from "@react-just/router";
import Home from "./Home";
import NotFound from "./NotFound";

export default async function Routes({ url }: { url: URL }) {
  return (
    <Router url={url}>
      <Route path="/" component={Home} />
      <Route path="*splat" component={NotFound} />
    </Router>
  );
}

INFO

Route components are not rendered directly. Instead, the Router component processes them to build the routing table.

Props

interface RouteProps {
  children?: RouteChildren;
  component: ComponentType<RouteComponentProps>;
  path: string;
}

type RouteChildren =
  | Iterable<RouteChildren>
  | ReactElement<RouteProps, typeof Route>
  | boolean
  | null
  | undefined;

• children (optional): Nested route definitions for creating route hierarchies.
• component: The React component rendered when the route matches. The component will receive RouteComponentProps.
• path: The URL pattern to match against. Supports static segments, path and wildcard parameters, and optional segments.

Leading Slash

The leading slash is ignored, so path="about" and path="/about" are equivalent. For consistency, it's recommended to always include the leading slash.

Path Patterns

Static Paths

<Route path="/" component={Home} />
<Route path="/about" component={About} />
<Route path="/contact" component={Contact} />

Path Parameters

Use :paramName to capture dynamic segments:

<Route path="/users/:id" component={UserProfile} />
<Route path="/blog/:category/:slug" component={BlogPost} />

Path parameters are available via the params prop in the component or the useParams hook in a client module.

Parameter name must be a valid identifier containing only letters, numbers, or underscores _.

Optional Parameters

Add ? to make a parameter optional:

<Route path="/products/:category/:subcategory?" component={Products} />

This matches both /products/electronics and /products/electronics/phones.

Wildcard Parameters

Use *paramName to capture the rest of the path:

<Route path="/docs/*sections" component={Documentation} />
<Route path="/files/*path" component={FileViewer} />

Wildcard parameters capture all remaining path segments as an array. You can access them through the params prop in the component or the useParams hook in a client module.

Parameter name must be a valid identifier containing only letters, numbers, or underscores _.

Invalid Patterns

The Router throws an error if it encounters an invalid pattern:

• Empty path segments: "/users//profile".
• Trailing slashes: "/about/".
• Invalid parameter names: "/:user-id".

Nesting

Routes can be nested to define hierarchical routing structures:

<Route path="/admin" component={AdminLayout}>
  <Route path="/dashboard" component={AdminDashboard} />
  <Route path="/users" component={AdminUsers} />
  <Route path="/settings" component={AdminSettings} />
</Route>

No Children for Index Routes

Index routes (path="/") cannot have children. Otherwise, the Router will throw an error.