Stefan Hacker
23 lines
929 B
JavaScript
23 lines
929 B
JavaScript
define(["require", "exports"], function (require, exports) {
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getScrollUtils = void 0;
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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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exports.getScrollUtils = getScrollUtils;
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});
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//# sourceMappingURL=scroll.js.map
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