refactor: migrate parsers to TS (#133)

* dev: finish top-level parsers TS migration

* dev: migrate menu renderers to TS

* chore: fix ts errors

* dev: finish ts migration 🎉

src/parser/classes/Channel.ts

@@ -0,0 +1,32 @@
+import Author from './misc/Author';
+import NavigationEndpoint from './NavigationEndpoint';
+import Text from './misc/Text';
+import { YTNode } from '../helpers';
+
+class Channel extends YTNode {
+  static type = 'Channel';
+
+  id: string;
+  author: Author;
+  subscribers: Text;
+  videos: Text;
+  endpoint: NavigationEndpoint;
+  description_snippet: Text;
+
+  constructor(data: any) {
+    super();
+    this.id = data.channelId;
+
+    this.author = new Author({
+      ...data.title,
+      navigationEndpoint: data.navigationEndpoint
+    }, data.ownerBadges, data.thumbnail);
+
+    this.subscribers = new Text(data.subscriberCountText);
+    this.videos = new Text(data.videoCountText);
+    this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
+    this.description_snippet = new Text(data.descriptionSnippet);
+  }
+}
+
+export default Channel;