useIsMutating

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

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

Options

• mutationKey?: string | unknown[]
• filters?: MutationFilters: Mutation Filters

Returns

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