return options on parse

lib/InteractiveOptions.ts

@@ -78,10 +78,11 @@ export class InteractiveOptions extends Persistent {
     }
   }
 
-  public async parse (): Promise<void> {
+  public async parse (): Promise<Record<string, unknown>> {
     await this.get_env_options ();
     await this.get_args_options ();
     await this.get_interactive_options ();
+    return this.to_object ();
   }
 
   private async assign_arg (opt: OptionProcess, value: unknown): Promise<void> {