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