refactor!: migrate core renderers to TypeScript

src/parser/classes/ItemSection.ts

@@ -0,0 +1,24 @@
+import Parser from '../index';
+import ItemSectionHeader from './ItemSectionHeader';
+
+import { YTNode } from '../helpers';
+
+class ItemSection extends YTNode {
+  static type = 'ItemSection';
+
+  header: ItemSectionHeader | null;
+  contents;
+  target_id;
+
+  constructor(data: any) {
+    super();
+    this.header = Parser.parseItem<ItemSectionHeader>(data.header, ItemSectionHeader);
+    this.contents = Parser.parse(data.contents, true);
+
+    if (data.targetId || data.sectionIdentifier) {
+      this.target_id = data?.target_id || data?.sectionIdentifier;
+    }
+  }
+}
+
+export default ItemSection;