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Wyatt JohnsonandGitHub
22d263c6d2
* feat: refactored bridge - Cleaned up implementation of bridge - Removed unneeded babel-polyfill and webpack globals * fix: fixed up some static headers - bumped version * fix: moved intersection observer out of chunk * fix: fixed misplaced "!"
31 lines
802 B
JavaScript
31 lines
802 B
JavaScript
export default function onIntersect(el, callback) {
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// Ensure that the intersection observer is available.
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if (!IntersectionObserver) {
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// tslint:disable-next-line:no-console
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window.console.warn('IntersectionObserver not available, rendering now');
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callback();
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return;
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}
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// Create the Intersection Observer that will wait till the embed is within
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// view and will then call the callback.
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const observer = new IntersectionObserver(
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entries => {
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if (entries[0].isIntersecting) {
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// Stop receiving intersection events.
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observer.disconnect();
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// Fire the callback.
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callback();
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}
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},
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{
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rootMargin: '100px',
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threshold: 1.0,
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}
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);
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// Start observing the element for visibility.
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observer.observe(el);
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}
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