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Data Loading

Data loading is a common concern for web applications and is related to routing. When loading a page for your app, it's ideal if all of the page's async requirements are fetched and fulfilled as early as possible, in parallel. The router is the best place to coordinate these async dependencies as it's usually the only place in your app that knows where users are headed before content is rendered.

You may be familiar with getServerSideProps from Next.js or loaders from Remix/React-Router. TanStack Router has similar functionality to preload/load assets on a per-route basis in parallel allowing React to render as quickly as possible as it fetches via suspense.

Beyond these normal expectations of a router, TanStack Router goes above and beyond and provides built-in SWR Caching, a long-term in-memory caching layer for route loaders. This means that you can use TanStack Router to both preload data for your routes so they load instantaneously or temporarily cache route data for previously visited routes to use again later.

The route loading lifecycle

Every time a URL/history update is detected, the router executes the following sequence:

  • Route Matching (Top-Down)
    • route.params.parse
    • route.validateSearch
  • Route Pre-Loading (Serial)
    • route.beforeLoad
    • route.onError
      • route.errorComponent / parentRoute.errorComponent / router.defaultErrorComponent
  • Route Loading (Parallel)
    • route.component.preload?
    • route.loader
      • route.pendingComponent (Optional)
      • route.component
    • route.onError
      • route.errorComponent / parentRoute.errorComponent / router.defaultErrorComponent

To Router Cache or not to Router Cache?

There is a high possibility that TanStack's router cache will be a good fit for most smaller to medium size applications, but it's important to understand the tradeoffs of using it vs a more robust caching solution like TanStack Query:

TanStack Router Cache Pros:

  • Built-in, easy to use, no extra dependencies
  • Handles deduping, preloading, loading, stale-while-revalidate, background refetching on a per-route basis
  • Coarse invalidation (invalidate all routes and cache at once)
  • Automatic garbage collection
  • Works great for apps that share little data between routes
  • "Just works" for SSR

TanStack Router Cache Cons:

  • No persistence adapters/model
  • No shared caching/deduping between routes
  • No built-in mutation APIs (a basic useMutation hook is provided in many examples that may be sufficient for many use cases)
  • No built-in cache-level optimistic update APIs (you can still use ephemeral state from something like a useMutation hook to achieve this at the component level)

Tip

If you know right away that you'd like to or need to use something more robust like TanStack Query, skip to the External Data Loading guide.

Using the Router Cache

The router cache is built-in and is as easy as returning data from any route's loader function. Let's learn how!

Route loaders

Route loader functions are called when a route match is loaded. They are called with a single parameter which is an object containing many helpful properties. We'll go over those in a bit, but first, let's look at an example of a route loader function:

tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
})

loader Parameters

The loader function receives a single object with the following properties:

  • abortController - The route's abortController. Its signal is cancelled when the route is unloaded or when the Route is no longer relevant and the current invocation of the loader function becomes outdated.
  • cause - The cause of the current route match, either enter or stay.
  • context - The route's context object, which is a merged union of:
    • Parent route context
    • This route's context as provided by the beforeLoad option
  • deps - The object value returned from the Route.loaderDeps function. If Route.loaderDeps is not defined, an empty object will be provided instead.
  • location - The current location
  • params - The route's path params
  • parentMatchPromise - Promise<void> or undefined
  • preload - Boolean which is true when the route is being preloaded instead of loaded
  • route - The route itself

Using these parameters, we can do a lot of cool things, but first, let's take a look at how we can control it and when the loader function is called.

Dependency-based Stale-While-Revalidate Caching

TanStack Router provides a built-in Stale-While-Revalidate caching layer for route loaders that is keyed on the dependencies of a route:

  • The route's fully parsed pathname
    • e.g. /posts/1 vs /posts/2
  • Any additional dependencies provided by the loaderDeps option
    • e.g. loaderDeps: ({ search: { pageIndex, pageSize } }) => ({ pageIndex, pageSize })

Using these dependencies as keys, TanStack Router will cache the data returned from a route's loader function and use it to fulfill subsequent requests for the same route match. This means that if a route's data is already in the cache, it will be returned immediately, then potentially be refetched in the background depending on the "freshness" of the data.

Key options

To control router dependencies and "freshness", TanStack Router provides a plethora of options to control the keying and caching behavior of your route loaders. Let's take a look at them in the order that you are most likely to use them:

  • routeOptions.loaderDeps
    • A function that supplies you the search params for a router and returns an object of dependencies for use in your loader function. When these deps changed from navigation to navigation, it will cause the route to reload regardless of staleTimes. The deps are compared using a deep equality check.
  • routeOptions.staleTime
  • routerOptions.defaultStaleTime
    • The number of milliseconds that a route's data should be considered fresh when attempting to load.
  • routeOptions.preloadStaleTime
  • routerOptions.defaultPreloadStaleTime
    • The number of milliseconds that a route's data should be considered fresh attempting to preload.
  • routeOptions.gcTime
  • routerOptions.defaultGcTime
    • The number of milliseconds that a route's data should be kept in the cache before being garbage collected.
  • routeOptions.shouldReload
    • A function that receives the same beforeLoad and loaderContext parameters and returns a boolean indicating if the route should reload. This offers one more level of control over when a route should reload beyond staleTime and loaderDeps and can be used to implement patterns similar to Remix's shouldLoad option.

⚠️ Some Important Defaults

  • By default, the staleTime is set to 0, meaning that the route's data will always be considered stale and will always be reloaded in the background when the route is rematched.
  • By default, a previously preloaded route is considered fresh for 30 seconds. This means if a route is preloaded, then preloaded again within 30 seconds, the second preload will be ignored. This prevents unnecessary preloads from happening too frequently. When a route is loaded normally, the standard staleTime is used.
  • By default, the gcTime is set to 30 minutes, meaning that any route data that has not been accessed in 30 minutes will be garbage collected and removed from the cache.
  • router.invalidate() will force all active routes to reload their loaders immediately and mark every cached route's data as stale.

Using loaderDeps to access search params

Imagine a /posts route supports some pagination via search params offset and limit. For the cache to uniquely store this data, we need to access these search params via the loaderDeps function. By explicitly identifying them, each route match for /posts with different offset and limit won't get mixed up!

Once we have these deps in place, the route will always reload when the deps change.

tsx
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loaderDeps: ({ search: { offset, limit } }) => ({ offset, limit }),
  loader: ({ deps: { offset, limit } }) =>
    fetchPosts({
      offset,
      limit,
    }),
})
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loaderDeps: ({ search: { offset, limit } }) => ({ offset, limit }),
  loader: ({ deps: { offset, limit } }) =>
    fetchPosts({
      offset,
      limit,
    }),
})

Using staleTime to control how long data is considered fresh

By default, staleTime for navigations is set to 0ms (and 30 seconds for preloads) which means that the route's data will always be considered stale and will always be reloaded in the background when the route is matched and navigated to.

This is a good default for most use cases, but you may find that some route data is more static or potentially expensive to load. In these cases, you can use the staleTime option to control how long the route's data is considered fresh for navigations. Let's take a look at an example:

tsx
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  // Consider the route's data fresh for 10 seconds
  staleTime: 10_000,
})
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  // Consider the route's data fresh for 10 seconds
  staleTime: 10_000,
})

By passing 10_000 to the staleTime option, we are telling the router to consider the route's data fresh for 10 seconds. This means that if the user navigates to /posts from /about within 10 seconds of the last loader result, the route's data will not be reloaded. If the user then navigates to /posts from /about after 10 seconds, the route's data will be reloaded in the background.

Turning off stale-while-revalidate caching

To disable stale-while-revalidate caching for a route, set the staleTime option to Infinity:

tsx
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  staleTime: Infinity,
})
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  staleTime: Infinity,
})

You can even turn this off for all routes by setting the defaultStaleTime option on the router:

tsx
const router = createRouter({
  routeTree,
  defaultStaleTime: Infinity,
})
const router = createRouter({
  routeTree,
  defaultStaleTime: Infinity,
})

Using shouldReload and gcTime to opt-out of caching

Similar to Remix's default functionality, you may want to configure a route to only load on entry or when critical loader deps change. You can do this by using the gcTime option combined with the shouldReload option, which accepts either a boolean or a function that receives the same beforeLoad and loaderContext parameters and returns a boolean indicating if the route should reload.

tsx
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loaderDeps: ({ search: { offset, limit } }) => ({ offset, limit }),
  loader: ({ deps }) => fetchPosts(deps),
  // Do not cache this route's data after it's unloaded
  gcTime: 0,
  // Only reload the route when the user navigates to it or when deps change
  shouldReload: false,
})
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loaderDeps: ({ search: { offset, limit } }) => ({ offset, limit }),
  loader: ({ deps }) => fetchPosts(deps),
  // Do not cache this route's data after it's unloaded
  gcTime: 0,
  // Only reload the route when the user navigates to it or when deps change
  shouldReload: false,
})

Opting out of caching while still preloading

Even though you may opt-out of short-term caching for your route data, you can still get the benefits of preloading! With the above configuration, preloading will still "just work" with the default preloadGcTime. This means that if a route is preloaded, then navigated to, the route's data will be considered fresh and will not be reloaded.

To opt out of preloading, don't turn it on via the routerOptions.defaultPreload or routeOptions.preload options.

Passing all loader events to an external cache

We break down this use case in the External Data Loading page, but if you'd like to use an external cache like TanStack Query, you can do so by passing all loader events to your external cache. As long as you are using the defaults, the only change you'll need to make is to set the defaultPreloadStaleTime option on the router to 0:

tsx
const router = createRouter({
  routeTree,
  defaultPreloadStaleTime: 0,
})
const router = createRouter({
  routeTree,
  defaultPreloadStaleTime: 0,
})

This will ensure that every preload, load, and reload event will trigger your loader functions, which can then be handled and deduped by your external cache.

Using Router Context

The context argument passed to the loader function is an object containing a merged union of:

  • Parent route context
  • This route's context as provided by the beforeLoad option

Starting at the very top of the router, you can pass an initial context to the router via the context option. This context will be available to all routes in the router and get copied and extended by each route as they are matched. This happens by passing a context to a route via the beforeLoad option. This context will be available to all the route's child routes. The resulting context will be available to the route's loader function.

In this example, we'll create a function in our route context to fetch posts, then use it in our loader function.

🧠 Context is a powerful tool for dependency injection. You can use it to inject services, hooks, and other objects into your router and routes. You can also additively pass data down the route tree at every route using a route's beforeLoad option.

  • /utils/fetchPosts.tsx
tsx
export const fetchPosts = async () => {
  const res = await fetch(`/api/posts?page=${pageIndex}`)
  if (!res.ok) throw new Error('Failed to fetch posts')
  return res.json()
}
export const fetchPosts = async () => {
  const res = await fetch(`/api/posts?page=${pageIndex}`)
  if (!res.ok) throw new Error('Failed to fetch posts')
  return res.json()
}
  • /routes/__root.tsx
tsx
import { createRootRouteWithContext } from '@tanstack/react-router'

// Create a root route using the createRootRouteWithContext<{...}>() function and pass it whatever types you would like to be available in your router context.
export const Route = createRootRouteWithContext<{
  fetchPosts: typeof fetchPosts
}>()() // NOTE: the double call is on purpose, since createRootRouteWithContext is a factory ;)
import { createRootRouteWithContext } from '@tanstack/react-router'

// Create a root route using the createRootRouteWithContext<{...}>() function and pass it whatever types you would like to be available in your router context.
export const Route = createRootRouteWithContext<{
  fetchPosts: typeof fetchPosts
}>()() // NOTE: the double call is on purpose, since createRootRouteWithContext is a factory ;)
  • /routes/posts.tsx
tsx
import { createFileRoute } from '@tanstack/react-router'

// Notice how our postsRoute references context to get our fetchPosts function
// This can be a powerful tool for dependency injection across your router
// and routes.
export const Route = createFileRoute('/posts')({
  loader: ({ context: { fetchPosts } }) => fetchPosts(),
})
import { createFileRoute } from '@tanstack/react-router'

// Notice how our postsRoute references context to get our fetchPosts function
// This can be a powerful tool for dependency injection across your router
// and routes.
export const Route = createFileRoute('/posts')({
  loader: ({ context: { fetchPosts } }) => fetchPosts(),
})
  • /router.tsx
tsx
import { routeTree } from './routeTree.gen'

// Use your routerContext to create a new router
// This will require that you fullfil the type requirements of the routerContext
const router = createRouter({
  routeTree,
  context: {
    // Supply the fetchPosts function to the router context
    fetchPosts,
  },
})
import { routeTree } from './routeTree.gen'

// Use your routerContext to create a new router
// This will require that you fullfil the type requirements of the routerContext
const router = createRouter({
  routeTree,
  context: {
    // Supply the fetchPosts function to the router context
    fetchPosts,
  },
})

Using Path Params

To use path params in your loader function, access them via the params property on the function's parameters. Here's an example:

tsx
// routes/posts.$postId.tsx
export const Route = createFileRoute('/posts/$postId')({
  loader: ({ params: { postId } }) => fetchPostById(postId),
})
// routes/posts.$postId.tsx
export const Route = createFileRoute('/posts/$postId')({
  loader: ({ params: { postId } }) => fetchPostById(postId),
})

Using Route Context

Passing down global context to your router is great, but what if you want to provide context that is specific to a route? This is where the beforeLoad option comes in. The beforeLoad option is a function that runs right before attempting to load a route and receives the same parameters as loader. Beyond its ability to redirect potential matches, block loader requests, etc, it can also return an object that will be merged into the route's context. Let's take a look at an example where we inject some data into our route context via the beforeLoad option:

tsx
// /routes/posts.tsx
import { createFileRoute } from '@tanstack/react-router'

export const Route = createFileRoute('/posts')({
  // Pass the fetchPosts function to the route context
  beforeLoad: () => ({
    fetchPosts: () => console.info('foo'),
  }),
  loader: ({ context: { fetchPosts } }) => {
    console.info(fetchPosts()) // 'foo'

    // ...
  },
})
// /routes/posts.tsx
import { createFileRoute } from '@tanstack/react-router'

export const Route = createFileRoute('/posts')({
  // Pass the fetchPosts function to the route context
  beforeLoad: () => ({
    fetchPosts: () => console.info('foo'),
  }),
  loader: ({ context: { fetchPosts } }) => {
    console.info(fetchPosts()) // 'foo'

    // ...
  },
})

Using Search Params in Loaders

❓ But wait Tanner... where the heck are my search params?!

You might be here wondering why search isn't directly available in the loader function's parameters. We've purposefully designed it this way to help you succeed. Let's take a look at why:

  • Search Parameters being used in a loader function are a very good indicator that those search params should also be used to uniquely identify the data being loaded. For example, you may have a route that uses a search param like pageIndex that uniquely identifies the data held inside of the route match. Or, imagine a /users/user route that uses the search param userId to identify a specific user in your application, you might model your url like this: /users/user?userId=123. This means that your user route would need some extra help to identify a specific user.
  • Directly accessing search params in a loader function can lead to bugs in caching and preloading where the data being loaded is not unique to the current URL pathname and search params. For example, you might ask your /posts route to preload page 2's results, but without the distinction of pages in your route configuration, you will end up fetching, storing and displaying page 2's data on your /posts or ?page=1 screen instead of it preloading in the background!
  • Placing a threshold between search parameters and the loader function allows the router to understand your dependencies and reactivity.
tsx
// /routes/users.user.tsx
export const Route = createFileRoute('/users/user')({
  validateSearch: (search) =>
    search as {
      userId: string
    },
  loaderDeps: ({ search: { userId } }) => ({
    userId,
  }),
  loader: async ({ deps: { userId } }) => getUser(userId),
})
// /routes/users.user.tsx
export const Route = createFileRoute('/users/user')({
  validateSearch: (search) =>
    search as {
      userId: string
    },
  loaderDeps: ({ search: { userId } }) => ({
    userId,
  }),
  loader: async ({ deps: { userId } }) => getUser(userId),
})

Accessing Search Params via routeOptions.loaderDeps

tsx
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  // Use zod to validate and parse the search params
  validateSearch: z.object({
    offset: z.number().int().nonnegative().catch(0),
  }),
  // Pass the offset to your loader deps via the loaderDeps function
  loaderDeps: ({ search: { offset } }) => ({ offset }),
  // Use the offset from context in the loader function
  loader: async ({ deps: { offset } }) =>
    fetchPosts({
      offset,
    }),
})
// /routes/posts.tsx
export const Route = createFileRoute('/posts')({
  // Use zod to validate and parse the search params
  validateSearch: z.object({
    offset: z.number().int().nonnegative().catch(0),
  }),
  // Pass the offset to your loader deps via the loaderDeps function
  loaderDeps: ({ search: { offset } }) => ({ offset }),
  // Use the offset from context in the loader function
  loader: async ({ deps: { offset } }) =>
    fetchPosts({
      offset,
    }),
})

Using the Abort Signal

The abortController property of the loader function is an AbortController. Its signal is cancelled when the route is unloaded or when the loader call becomes outdated. This is useful for cancelling network requests when the route is unloaded or when the route's params change. Here is an example using it with a fetch call:

tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: ({ abortController }) =>
    fetchPosts({
      // Pass this to an underlying fetch call or anything that supports signals
      signal: abortController.signal,
    }),
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: ({ abortController }) =>
    fetchPosts({
      // Pass this to an underlying fetch call or anything that supports signals
      signal: abortController.signal,
    }),
})

Using the preload flag

The preload property of the loader function is a boolean which is true when the route is being preloaded instead of loaded. Some data loading libraries may handle preloading differently than a standard fetch, so you may want to pass preload to your data loading library, or use it to execute the appropriate data loading logic:

tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: async ({ preload }) =>
    fetchPosts({
      maxAge: preload ? 10_000 : 0, // Preloads should hang around a bit longer
    }),
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: async ({ preload }) =>
    fetchPosts({
      maxAge: preload ? 10_000 : 0, // Preloads should hang around a bit longer
    }),
})

Handling Slow Loaders

Ideally most route loaders can resolve their data within a short moment, removing the need to render a placeholder spinner and simply rely on suspense to render the next route when it's completely ready. When critical data that is required to render a route's component is slow though, you have 2 options:

  • Split up your fast and slow data into separate promises and defer the slow data until after the fast data is loaded (see the Deferred Data Loading guide).
  • Show a pending component after an optimistic suspense threshold until all of the data is ready (See below).

Showing a pending component

By default, TanStack Router will show a pending component for loaders that take longer than 1 second to resolve. This is an optimistic threshold that can be configured via:

  • routeOptions.pendingMs or
  • routerOptions.defaultPendingMs

When the pending time threshold is exceeded, the router will render the pendingComponent option of the route, if configured.

Avoiding Pending Component Flash

If you're using a pending component, the last thing you want is for your pending time threshold to be met, then have your data resolve immediately after, resulting in a jarring flash of your pending component. To avoid this, TanStack Router by default will show your pending component for at least 500ms. This is an optimistic threshold that can be configured via:

  • routeOptions.pendingMinMs or
  • routerOptions.defaultPendingMinMs

Handling Errors

TanStack Router provides a few ways to handle errors that occur during the route loading lifecycle. Let's take a look at them.

Handling Errors with routeOptions.onError

The routeOptions.onError option is a function that is called when an error occurs during the route loading.

tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  onError: ({ error }) => {
    // Log the error
    console.error(error)
  },
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  onError: ({ error }) => {
    // Log the error
    console.error(error)
  },
})

Handling Errors with routeOptions.onCatch

The routeOptions.onCatch option is a function that is called whenever an error was caught by the router's CatchBoundary.

tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  onCatch: ({ error, errorInfo }) => {
    // Log the error
    console.error(error)
  },
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  onCatch: ({ error, errorInfo }) => {
    // Log the error
    console.error(error)
  },
})

Handling Errors with routeOptions.errorComponent

The routeOptions.errorComponent option is a component that is rendered when an error occurs during the route loading or rendering lifecycle. It is rendered with the following props:

  • error - The error that occurred
  • reset - A function to reset the internal CatchBoundary
tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error }) => {
    // Render an error message
    return <div>{error.message}</div>
  },
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error }) => {
    // Render an error message
    return <div>{error.message}</div>
  },
})

The reset function can be used to allow the user to retry rendering the error boundaries normal children:

tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error, reset }) => {
    const router = useRouter()

    return (
      <div>
        {error.message}
        <button
          onClick={() => {
            // Reset the router error boundary
            reset()
          }}
        >
          retry
        </button>
      </div>
    )
  },
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error, reset }) => {
    const router = useRouter()

    return (
      <div>
        {error.message}
        <button
          onClick={() => {
            // Reset the router error boundary
            reset()
          }}
        >
          retry
        </button>
      </div>
    )
  },
})

If the error was the result of a route load, you should instead call router.invalidate(), which will coordinate both a router reload and an error boundary reset:

tsx
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error, reset }) => {
    const router = useRouter()

    return (
      <div>
        {error.message}
        <button
          onClick={() => {
            // Invalidate the route to reload the loader, which will also reset the error boundary
            router.invalidate()
          }}
        >
          retry
        </button>
      </div>
    )
  },
})
// routes/posts.tsx
export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error, reset }) => {
    const router = useRouter()

    return (
      <div>
        {error.message}
        <button
          onClick={() => {
            // Invalidate the route to reload the loader, which will also reset the error boundary
            router.invalidate()
          }}
        >
          retry
        </button>
      </div>
    )
  },
})

Using the default ErrorComponent

TanStack Router provides a default ErrorComponent that is rendered when an error occurs during the route loading or rendering lifecycle. If you choose to override your routes' error components, it's still wise to always fall back to rendering any uncaught errors with the default ErrorComponent:

tsx
// routes/posts.tsx
import { createFileRoute, ErrorComponent } from '@tanstack/react-router'

export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error }) => {
    if (error instanceof MyCustomError) {
      // Render a custom error message
      return <div>{error.message}</div>
    }

    // Fallback to the default ErrorComponent
    return <ErrorComponent error={error} />
  },
})
// routes/posts.tsx
import { createFileRoute, ErrorComponent } from '@tanstack/react-router'

export const Route = createFileRoute('/posts')({
  loader: () => fetchPosts(),
  errorComponent: ({ error }) => {
    if (error instanceof MyCustomError) {
      // Render a custom error message
      return <div>{error.message}</div>
    }

    // Fallback to the default ErrorComponent
    return <ErrorComponent error={error} />
  },
})
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