Using MutationCache with Context Providers

Provide an example of integrating MutationCache with React context providers to facilitate global state management and updates across different components.

import React, { createContext, useContext, useState, useEffect } from 'react';
import { MutationCache, QueryClient, QueryClientProvider } from 'react-query';

Imports the necessary React and React Query functions and classes.

const mutationCache = new MutationCache();

Creates a new instance of MutationCache.

const queryClient = new QueryClient({ mutationCache });

Initializes QueryClient with the MutationCache for global access.

const MutationCacheContext = createContext();

Creates a React context to provide MutationCache access across components.

export const MutationCacheProvider = ({ children }) => (
  <MutationCacheContext.Provider value={mutationCache}>
    {children}
  </MutationCacheContext.Provider>
);

Defines a provider component to pass the MutationCache down the component tree.

export const useMutationCache = () => useContext(MutationCacheContext);

Defines a custom hook for accessing the MutationCache from components.

const App = () => (
  <QueryClientProvider client={queryClient}>
    <MutationCacheProvider>
      {/* Child components that use mutation cache */}
    </MutationCacheProvider>
  </QueryClientProvider>
);

Wraps the application with QueryClientProvider and MutationCacheProvider to make the mutation cache available throughout the app.