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15 lines
420 B
15 lines
420 B
// @flow
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import { isElement } from './instanceOf';
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import type { Window } from '../types';
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export default function getDocumentElement(
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element: Element | Window
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): HTMLElement {
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// $FlowFixMe[incompatible-return]: assume body is always available
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return (
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(isElement(element)
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? element.ownerDocument
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: // $FlowFixMe[prop-missing]
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element.document) || window.document
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).documentElement;
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}
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