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Throw error when QueryClientProvider has not been used to set a query client #1309

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merged 1 commit into from
Nov 22, 2020
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Throw error when QueryClientProvider has not been used to set a query client #1309

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2 changes: 2 additions & 0 deletions docs/src/pages/guides/migrating-to-react-query-3.md
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,8 @@ This has some benefits:

Use the `QueryClientProvider` component to connect a `QueryClient` to your application:

**NOTE** There is no longer a default query cache, you must connect your application to a query provider manually

```js
import { QueryClient, QueryClientProvider } from 'react-query'

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8 changes: 7 additions & 1 deletion src/react/QueryClientProvider.tsx
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Expand Up @@ -6,7 +6,13 @@ const QueryClientContext = React.createContext<QueryClient | undefined>(
undefined
)

export const useQueryClient = () => React.useContext(QueryClientContext)!
export const useQueryClient = () => {
const queryClient = React.useContext(QueryClientContext)
if (!queryClient) {
throw new Error('No QueryClient set, use QueryClientProvider to set one')
}
return queryClient
}

export interface QueryClientProviderProps {
client: QueryClient
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