Function placeForCommonAncestor

lib/html/syntax.js:5498–5538

(
		/** @type {HtmlElement} */ commonAncestor
	)

	};

	const placeForCommonAncestor = (
		/** @type {HtmlElement} */ commonAncestor
	) => {
		if (
			TABLE_CONTEXT.has(commonAncestor.tagName) &&
			commonAncestor.namespace === NS_HTML
		) {
			// foster
			// reuse appropriatePlace logic but rooted differently: emulate
			let lastTemplate = -1;
			let lastTable = -1;
			for (let i = open.length - 1; i >= 0; i--) {
				if (
					open[i].tagName === "template" &&
					open[i].namespace === NS_HTML &&
					lastTemplate === -1
				) {
					lastTemplate = i;
				}
				if (
					open[i].tagName === "table" &&
					open[i].namespace === NS_HTML &&
					lastTable === -1
				) {
					lastTable = i;
				}
			}
			if (
				lastTemplate !== -1 &&
				(lastTable === -1 || lastTemplate > lastTable)
			) {
				return { parent: open[lastTemplate], beforeNode: null };
			}
			if (lastTable === -1) return { parent: open[0], beforeNode: null };
			const table = open[lastTable];
			const tp = findParent(table);
			if (tp) return { parent: tp, beforeNode: table };
			return { parent: open[lastTable - 1], beforeNode: null };
		}
		return { parent: commonAncestor, beforeNode: null };
	};

	const detach = (/** @type {HtmlNode} */ node) => {
		const p = findParent(node);