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Fix descendant Routes rendering alongside RouterProvider errors #10374

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merged 7 commits into from
Apr 21, 2023
Merged

Fix descendant Routes rendering alongside RouterProvider errors #10374

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fc705d3
Fix descendant Routes rendering alongside RouterProvider errors
brophdawg11 Apr 20, 2023
f1d1e93
Remove it.only
brophdawg11 Apr 20, 2023
90a1851
Remove fork from Routes in favor of new DataRoutes component
brophdawg11 Apr 20, 2023
146237a
Revert whitespace snapshot changes
brophdawg11 Apr 20, 2023
8602a25
bump bundle
brophdawg11 Apr 20, 2023
69e1f2d
Merge branch 'dev' into brophdawg11/routes-with-data-errors
brophdawg11 Apr 21, 2023
11a129a
Merge branch 'dev' into brophdawg11/routes-with-data-errors
brophdawg11 Apr 21, 2023
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5 changes: 5 additions & 0 deletions .changeset/descendant-routes-data-errors.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"react-router": patch
---

Fix bug preventing rendering of descendant `<Routes>` when `RouterProvider` errors existed
55 changes: 50 additions & 5 deletions packages/react-router/__tests__/data-memory-router-test.tsx
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Expand Up @@ -1019,11 +1019,6 @@ describe("createMemoryRouter", () => {
),
{
initialEntries: ["/deep/path/to/descendant/routes"],
hydrationData: {
loaderData: {
"0-0": "count=1",
},
},
}
);
let { container } = render(<RouterProvider router={router} />);
Expand Down Expand Up @@ -1058,6 +1053,56 @@ describe("createMemoryRouter", () => {
`);
});

it.only("renders <Routes> alongside a data router ErrorBoundary", () => {
let router = createMemoryRouter(
[
{
path: "*",
Component() {
return (
<>
<Outlet />
<Routes>
<Route index element={<h1>Descendant</h1>} />
</Routes>
Comment on lines +1064 to +1067
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This is a bit of an unusual use-case. Normally the presence of an error would mean we don't reach descendant <Routes> down inside children Component's. But if the <Routes> is next to the <Outlet /> then both can render at the same time.

</>
);
},
children: [
{
id: "index",
index: true,
Component: () => <h1>Child</h1>,
ErrorBoundary() {
return <p>{(useRouteError() as Error).message}</p>;
},
},
],
},
],
{
initialEntries: ["/"],
hydrationData: {
errors: {
index: new Error("Broken!"),
},
},
}
);
let { container } = render(<RouterProvider router={router} />);

expect(getHtml(container)).toMatchInlineSnapshot(`
"<div>
<p>
Broken!
</p>
<h1>
Descendant
</h1>
</div>"
`);
});

describe("errors", () => {
it("renders hydration errors on leaf elements using errorElement", async () => {
let router = createMemoryRouter(
Expand Down
12 changes: 9 additions & 3 deletions packages/react-router/lib/hooks.tsx
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Expand Up @@ -319,6 +319,7 @@ export function useRoutes(
);

let { navigator } = React.useContext(NavigationContext);
let dataRouterContext = React.useContext(DataRouterContext);
let dataRouterStateContext = React.useContext(DataRouterStateContext);
let { matches: parentMatches } = React.useContext(RouteContext);
let routeMatch = parentMatches[parentMatches.length - 1];
Expand Down Expand Up @@ -432,7 +433,10 @@ export function useRoutes(
})
),
parentMatches,
dataRouterStateContext || undefined
// Only pass along the dataRouterStateContext when we're rendering from the
// RouterProvider layer. If routes is different then we're rendering from
// a descendant <Routes> tree
dataRouterContext?.router.routes === routes ? dataRouterStateContext : null
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@brophdawg11 brophdawg11 Apr 20, 2023 •
edited
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This is the root of the bug - _renderMatches was behaving as if in a data router anywhere under the context, including in descendant <Routes>. A potentially more explicit fix would be an optional prop to useRoutes but I was on the fence about touching the public API:

export function useRoutes(
  routes: RouteObject[],
  locationArg?: Partial<Location> | string,
  isDataRouterRender?: boolean,  // New arg passed true from <DataRoutes>
)

);

// When a user passes in a `locationArg`, the associated routes need to
Expand Down Expand Up @@ -613,7 +617,7 @@ function RenderedRoute({ routeContext, match, children }: RenderedRouteProps) {
export function _renderMatches(
matches: RouteMatch[] | null,
parentMatches: RouteMatch[] = [],
dataRouterState?: RemixRouter["state"]
dataRouterState: RemixRouter["state"] | null = null
): React.ReactElement | null {
if (matches == null) {
if (dataRouterState?.errors) {
Expand All @@ -635,7 +639,9 @@ export function _renderMatches(
);
invariant(
errorIndex >= 0,
`Could not find a matching route for the current errors: ${errors}`
`Could not find a matching route for errors on route IDs: ${Object.keys(
errors
).join(",")}`
);
renderedMatches = renderedMatches.slice(
0,
Expand Down