useIsMutating

useIsMutating is an optional hook that returns the number of mutations that your application is fetching (useful for app-wide loading indicators).

import { useIsMutating } from '@tanstack/react-query'
// How many mutations are fetching?
const isMutating = useIsMutating()
// How many mutations matching the posts prefix are fetching?
const isMutatingPosts = useIsMutating({ mutationKey: ['posts'] })

Options

• filters?: MutationFilters: Mutation Filters
• queryClient?: QueryClient,
  • Use this to use a custom QueryClient. Otherwise, the one from the nearest context will be used.

Returns

• isMutating: number
  • Will be the number of the mutations that your application is currently fetching.