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17 lines
525 B
17 lines
525 B
/* @flow */
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export const getViewportHeight = (): number => (
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// $FlowIssue
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window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight // $FlowIssue
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);
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export const getScrollY = (): number => {
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if (window.pageYOffset !== undefined) {
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return window.pageYOffset;
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} if (window.scrollTop !== undefined) {
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return window.scrollTop;
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}
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// $FlowIssue
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return (document.documentElement || document.body.parentNode || document.body).scrollTop; // $FlowIssue
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}; |