Function insertAtPlace

lib/html/syntax.js:4795–4814

(
		/** @type {InsertionPlace} */ place,
		/** @type {HtmlNode} */ node
	)

	};

	const insertAtPlace = (
		/** @type {InsertionPlace} */ place,
		/** @type {HtmlNode} */ node
	) => {
		if (place.beforeNode) {
			const arr = childrenOf(place.parent);
			const idx = arr.indexOf(place.beforeNode);
			if (
				node.type === NodeType.Text &&
				idx > 0 &&
				arr[idx - 1].type === NodeType.Text
			) {
				/** @type {HtmlText} */ (arr[idx - 1]).data += node.data;
				return;
			}
			arr.splice(idx, 0, node);
		} else {
			appendTo(place.parent, node);
		}
	};

	const insertCharacters = (
		/** @type {string} */ data,