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Last change
on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
Update repo after prototype presentation
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File size:
866 bytes
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1 | import { useEffect, useState } from 'react';
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2 | var useIntersection = function (ref, options) {
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3 | var _a = useState(null), intersectionObserverEntry = _a[0], setIntersectionObserverEntry = _a[1];
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4 | useEffect(function () {
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5 | if (ref.current && typeof IntersectionObserver === 'function') {
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6 | var handler = function (entries) {
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7 | setIntersectionObserverEntry(entries[0]);
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8 | };
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9 | var observer_1 = new IntersectionObserver(handler, options);
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10 | observer_1.observe(ref.current);
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11 | return function () {
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12 | setIntersectionObserverEntry(null);
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13 | observer_1.disconnect();
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14 | };
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15 | }
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16 | return function () { };
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17 | }, [ref.current, options.threshold, options.root, options.rootMargin]);
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18 | return intersectionObserverEntry;
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19 | };
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20 | export default useIntersection;
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