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Suspense и React 19 RC

В React 19 RC рендер всех дочерних компонентов происходит после завершения загрузки данных, в отличие от React 18, где рендерились все компоненты и отображался fallback до завершения загрузки.

export default function App() {
return (
<Suspense fallback={<p>...</p>}>
<Header />
<Navbar />
<main>
<Content />
</main>
<Footer />
</Suspense>
)
}


При приостановке компонента происходит последовательная загрузка данных и создается «водопад» запросов.

Для решения этой проблемы нужно делать предварительные запросы на уровне роута:

export const Route = createFileRoute('/')({
loader: ({ context: { queryClient } }) => {
queryClient.ensureQueryData(repoOptions('tanstack/query'))
queryClient.ensureQueryData(repoOptions('tanstack/table'))
},
component: () => (
<Suspense fallback={<p>...</p>}>
<RepoData name="tanstack/query" />
<RepoData name="tanstack/table" />
</Suspense>
),
})


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Suspense и React 19 RC

В React 19 RC рендер всех дочерних компонентов происходит после завершения загрузки данных, в отличие от React 18, где рендерились все компоненты и отображался fallback до завершения загрузки.

export default function App() {
return (
<Suspense fallback={<p>...</p>}>
<Header />
<Navbar />
<main>
<Content />
</main>
<Footer />
</Suspense>
)
}


При приостановке компонента происходит последовательная загрузка данных и создается «водопад» запросов.

Для решения этой проблемы нужно делать предварительные запросы на уровне роута:

export const Route = createFileRoute('/')({
loader: ({ context: { queryClient } }) => {
queryClient.ensureQueryData(repoOptions('tanstack/query'))
queryClient.ensureQueryData(repoOptions('tanstack/table'))
},
component: () => (
<Suspense fallback={<p>...</p>}>
<RepoData name="tanstack/query" />
<RepoData name="tanstack/table" />
</Suspense>
),
})


👉 @sWebDev

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