Function insertHtmlElement

lib/html/syntax.js:4858–4868

(
		/** @type {string} */ tagName,
		/** @type {HtmlAttribute[]} */ attributes,
		/** @type {TagPos | null} */ pos
	)

	};

	const insertHtmlElement = (
		/** @type {string} */ tagName,
		/** @type {HtmlAttribute[]} */ attributes,
		/** @type {TagPos | null} */ pos
	) => {
		const el = mkEl(tagName, NS_HTML, attributes, pos);
		const place = appropriatePlace();
		insertAtPlace(place, el);
		open.push(el);
		return el;
	};

	const insertForeignElement = (
		/** @type {string} */ tagName,