Files F123043253

useIsMutating.js
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Created: Thu, Jul 24, 11:18

useIsMutating.js
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	import React from 'react';
	import { notifyManager } from '../core/notifyManager';
	import { parseMutationFilterArgs } from '../core/utils';
	import { useQueryClient } from './QueryClientProvider';
	export function useIsMutating(arg1, arg2) {
	var mountedRef = React.useRef(false);
	var filters = parseMutationFilterArgs(arg1, arg2);
	var queryClient = useQueryClient();

	var _React$useState = React.useState(queryClient.isMutating(filters)),
	isMutating = _React$useState[0],
	setIsMutating = _React$useState[1];

	var filtersRef = React.useRef(filters);
	filtersRef.current = filters;
	var isMutatingRef = React.useRef(isMutating);
	isMutatingRef.current = isMutating;
	React.useEffect(function () {
	mountedRef.current = true;
	var unsubscribe = queryClient.getMutationCache().subscribe(notifyManager.batchCalls(function () {
	if (mountedRef.current) {
	var newIsMutating = queryClient.isMutating(filtersRef.current);

	if (isMutatingRef.current !== newIsMutating) {
	setIsMutating(newIsMutating);
	}
	}
	}));
	return function () {
	mountedRef.current = false;
	unsubscribe();
	};
	}, [queryClient]);
	return isMutating;
	}

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