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/SubscriptionNotificationToggleButton.ts

@@ -0,0 +1,29 @@
+import Parser from '../index';
+import { YTNode } from '../helpers';
+
+class SubscriptionNotificationToggleButton extends YTNode {
+  static type = 'SubscriptionNotificationToggleButton';
+
+  states: {
+    id: string;
+    next_id: string;
+    state: any;
+  };
+
+  current_state_id: string;
+  target_id: string;
+
+  constructor(data: any) {
+    super();
+    this.states = data.states.map((data: any) => ({
+      id: data.stateId,
+      next_id: data.nextStateId,
+      state: Parser.parse(data.state)
+    }));
+
+    this.current_state_id = data.currentStateId;
+    this.target_id = data.targetId;
+  }
+}
+
+export default SubscriptionNotificationToggleButton;