17 lines
368 B
TypeScript
17 lines
368 B
TypeScript
/*
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* https://github.com/morethanwords/tweb
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* Copyright (C) 2019-2021 Eduard Kuzmenko
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* https://github.com/morethanwords/tweb/blob/master/LICENSE
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*/
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export default function whichChild(elem: Node) {
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if(!elem.parentNode) {
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return -1;
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}
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let i = 0;
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// @ts-ignore
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while((elem = elem.previousElementSibling) !== null) ++i;
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return i;
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}
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