vanillajs-browser-helpers/getCurrentDocument.mjs

Collection of convenience code snippets (helpers) that aims to make it a little easier to work with vanilla JS in the browser

import isDocument from './isDocument';
import isDOMNode from './isDOMNode';
import isWindow from './isWindow';
export default function getCurrentDocument(obj) {
    if (isDocument(obj)) {
        return obj;
    }
    if (isWindow(obj)) {
        return obj.document;
    }
    if (!isDOMNode(obj)) {
        return null;
    }
    return obj.ownerDocument;
}