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29 lines
1.0 KiB
JavaScript
29 lines
1.0 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import { useEffect } from 'react';
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import { useEvent, useShallowMemoObject } from '../utils/reactUtils';
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const DefaultOptions = {
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attributes: true,
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characterData: true,
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childList: true,
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subtree: true,
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};
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export function useMutationObserver(target, callback, options = DefaultOptions) {
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const stableCallback = useEvent(callback);
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// MutationObserver options are not nested much
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// so this should be to memo options in 99%
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// TODO handle options.attributeFilter array
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const stableOptions = useShallowMemoObject(options);
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useEffect(() => {
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const observer = new MutationObserver(stableCallback);
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if (target) {
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observer.observe(target, stableOptions);
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}
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return () => observer.disconnect();
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}, [target, stableCallback, stableOptions]);
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}
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//# sourceMappingURL=useMutationObserver.js.map
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