diff --git a/core/README.md b/core/README.md
deleted file mode 100644
index ad383747237ee1a22ce39d01fbc7e77ac94b8e47..0000000000000000000000000000000000000000
diff --git a/core/live2d.d.ts b/core/live2d.d.ts
deleted file mode 100644
index 0283512ed1c9ea01d7dd1b67b76d660237b453e8..0000000000000000000000000000000000000000
diff --git a/cubism/.vscode/extensions.json b/cubism/.vscode/extensions.json
deleted file mode 100644
index fda5ad57b9567b939382ba15fb1d3b9f1fecf77e..0000000000000000000000000000000000000000
diff --git a/cubism/.vscode/tasks.json b/cubism/.vscode/tasks.json
deleted file mode 100644
index 7cd3fffed85da69d5af154f63480bce8766a038f..0000000000000000000000000000000000000000
diff --git a/types/index.d.ts b/types/index.d.ts
index dff08ce9cdd9adefd15841a750c556fc3203c750..51bae2d4d8d5cd25c3b9219d96e91dc4c96bb95c 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts	
@@ -1154,7 +1154,7 @@ export declare abstract class InternalModel extends EventEmitter {
 	/**
 	 * The managed Live2D core model.
 	 */
-	abstract readonly coreModel: object;
+	abstract readonly coreModel: CubismModel;
 	abstract readonly settings: ModelSettings;
 	focusController: FocusController;
 	abstract motionManager: MotionManager;
