39 lines
1.4 KiB
JavaScript
39 lines
1.4 KiB
JavaScript
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import * as React from 'react';
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import { useFluent_unstable as useFluent } from '@fluentui/react-shared-contexts';
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const { useRef, useEffect } = React;
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export const useMutationObserver = (target, callback, options)=>{
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'use no memo';
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// TODO: exclude types from this lint rule: https://github.com/microsoft/fluentui/issues/31286
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// eslint-disable-next-line no-restricted-globals
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const observer = useRef();
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const { targetDocument } = useFluent();
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const win = targetDocument === null || targetDocument === void 0 ? void 0 : targetDocument.defaultView;
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useEffect(()=>{
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if (!win) {
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return;
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}
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// Create an observer instance linked to the callback function
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observer.current = new win.MutationObserver(callback);
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}, [
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callback,
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win
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]);
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useEffect(()=>{
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if (target) {
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var // Start observing the target node for configured mutations
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_observer_current;
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(_observer_current = observer.current) === null || _observer_current === void 0 ? void 0 : _observer_current.observe(target, options);
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}
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return ()=>{
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var _observer_current;
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(_observer_current = observer.current) === null || _observer_current === void 0 ? void 0 : _observer_current.disconnect();
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};
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}, [
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target,
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options
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]);
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return {
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observer
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};
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};
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