diff --git a/packages/drawnix/src/plugins/freehand/freehand.generator.ts b/packages/drawnix/src/plugins/freehand/freehand.generator.ts
index a4dd283..6ddc3e4 100644
--- a/packages/drawnix/src/plugins/freehand/freehand.generator.ts
+++ b/packages/drawnix/src/plugins/freehand/freehand.generator.ts
@@ -4,14 +4,9 @@ import { Options } from 'roughjs/bin/core';
 import { DefaultFreehand, Freehand } from './type';
 import { gaussianSmooth } from './utils';
 
-export interface FreehandData {}
-
-export class FreehandGenerator extends Generator<Freehand, FreehandData> {
-  protected draw(
-    element: Freehand,
-    data?: FreehandData | undefined
-  ): SVGGElement | undefined {
-    let option: Options = { ...DefaultFreehand };
+export class FreehandGenerator extends Generator<Freehand> {
+  protected draw(element: Freehand): SVGGElement | undefined {
+    const option: Options = { ...DefaultFreehand };
     const g = PlaitBoard.getRoughSVG(this.board).curve(
       gaussianSmooth(element.points, 1, 9),
       option
diff --git a/packages/react-board/src/wrapper.tsx b/packages/react-board/src/wrapper.tsx
index 2ba8f95..b286a61 100644
--- a/packages/react-board/src/wrapper.tsx
+++ b/packages/react-board/src/wrapper.tsx
@@ -107,8 +107,8 @@ export const Wrapper: React.FC<WrapperProps> = ({
     });
 
     return () => {
-      BOARD_TO_ON_CHANGE.set(board, () => {});
-      BOARD_TO_AFTER_CHANGE.set(board, () => {});
+      BOARD_TO_ON_CHANGE.delete(board);
+      BOARD_TO_AFTER_CHANGE.delete(board);
     };
   }, [board, onContextChange]);
 
diff --git a/packages/react-text/src/plugins/with-text.ts b/packages/react-text/src/plugins/with-text.ts
index e2c0d0f..9704026 100644
--- a/packages/react-text/src/plugins/with-text.ts
+++ b/packages/react-text/src/plugins/with-text.ts
@@ -10,7 +10,7 @@ export const withText = <T extends ReactEditor>(editor: T) => {
 
   e.insertData = (data: DataTransfer) => {
     let text = data.getData('text/plain');
-    let plaitData = data.getData(`application/x-slate-fragment`);
+    const plaitData = data.getData(`application/x-slate-fragment`);
     if (!plaitData && text) {
       if (text.endsWith('\n')) {
         text = text.substring(0, text.length - 1);
diff --git a/packages/react-text/src/text.tsx b/packages/react-text/src/text.tsx
index 485a68a..7db735a 100644
--- a/packages/react-text/src/text.tsx
+++ b/packages/react-text/src/text.tsx
@@ -26,7 +26,7 @@ export const Text: React.FC<TextComponentProps> = (
     const editor = withText(withHistory(withReact(createEditor())));
     afterInit && afterInit(editor);
     return editor;
-  }, []);
+  }, [afterInit]);
   return (
     <Slate
       editor={editor}
@@ -44,7 +44,6 @@ export const Text: React.FC<TextComponentProps> = (
         renderElement={renderElement}
         renderLeaf={renderLeaf}
         readOnly={readonly === undefined ? true : readonly}
-        onKeyDown={(event) => {}}
         onCompositionStart={(event) => {
           if (onComposition) {
             onComposition(event as unknown as CompositionEvent);