useIsMutating

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

1import { useIsMutating } from "@tanstack/react-query";2// How many mutations are fetching?3const isMutating = useIsMutating();4// How many mutations matching the posts prefix are fetching?5const isMutatingPosts = useIsMutating(["posts"]);

Options

• mutationKey?: string | unknown[]
• filters?: MutationFilters: Mutation Filters
• context?: React.Context<QueryClient | undefined>
  • Use this to use a custom React Query context. Otherwise, defaultContext will be used.

Returns

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