Function useIsMutating

packages/react-query/src/useMutationState.ts:35–44

(
  filters?: MutationFilters,
  queryClient?: QueryClient,
)

 * ```
 */
export function useIsMutating(
  filters?: MutationFilters,
  queryClient?: QueryClient,
): number {
  const client = useQueryClient(queryClient)
  return useMutationState(
    { filters: { ...filters, status: 'pending' } },
    client,
  ).length
}

type MutationTypeFromResult<TResult> = [TResult] extends [
  MutationState<