I implemented lazy loading routes with lazy and suspense in order to reduce the main bundle size.
However, I run into the issue that, when refreshing the page, the app always end up in the wildcard route instead of reloading at the current location url.
If I remove the wildcard, the issue seems to be fixed, but then I miss the behavior of being redirected on wrong url input. If I remove the lazy/suspense combo and load the routes on the main bundle, the issue also is fixed, but then I obviously lose the benefits of lazy loading.
Why is that ? What could be done to allow the refresh to end up on the previous route ?
// Lazy imports
const Home = lazy(() => import("./home/Home"));
const RecordsModule = lazy(() => import("./records/Records"));
function App() {
// ...some logic
// No use of lazy loading here
return (
<BrowserRouter>
<Switch>
<Route exact path="/">
<Redirect to={isLoggedIn ? "/main" : "/auth"} />
</Route>
<Route path="/auth">
<Auth />
</Route>
<Route path="/main">
{!isLoggedIn && <Redirect to="/auth" />}
<Main />
</Route>
<Route path="*">
<Redirect to="/" />
</Route>
</Switch>
<Toaster />
</BrowserRouter>
);
}
function Main() {
// ...some other logic
/*
Here the Home and RecordsModule components are lazy loaded.
If the user refreshes the page while being on /main/records,
the resulting refresh will bring him on /main/home.
If I put a console.log in the wildcard route,
it appears to be the route used after the refresh.
The issue is not present if not using lazy loading or removing the wildcard route.
*/
return (
<div className="main">
<Switch>
<ErrorBoundary>
<Suspense
fallback={
<FullPageContainer>
<Spinner />
</FullPageContainer>
}
>
{/* This will redirect to /main/home if coming from /main */}
<Route exact path={match.path}>
<Redirect to={`${match.path}/home`} />
</Route>
{/* /main/home */}
<Route path={`${match.path}/home`}>
<Home />
</Route>
{/* /main/records */}
<Route path={`${match.path}/records`}>
<RecordsModule />
</Route>
{/* Redirects to /main/home if none of the above is matched */}
<Route path="*">
<Redirect to={`${match.path}/home`} />
</Route>
</Suspense>
</ErrorBoundary>
</Switch>
<Menu />
</div>
);
}
