Stefan Hacker
17 lines
640 B
JavaScript
17 lines
640 B
JavaScript
export var getScrollUtils = function () {
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var scrollTopElements = new Map();
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var getScrollTopInRange = function (el, range) {
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var _a;
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var currentScrollTop = el.scrollTop;
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var prevScrollTop = (_a = scrollTopElements.get(el)) !== null && _a !== void 0 ? _a : NaN;
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if (prevScrollTop - range <= currentScrollTop && prevScrollTop + range >= currentScrollTop) {
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return prevScrollTop;
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}
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scrollTopElements.set(el, currentScrollTop);
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return currentScrollTop;
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};
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return {
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getScrollTopInRange: getScrollTopInRange,
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};
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};
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//# sourceMappingURL=scroll.js.map
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