diff --git a/renderer/browser-window/main.tsx b/renderer/browser-window/main.tsx
index cbdb21e..038e131 100644
--- a/renderer/browser-window/main.tsx
+++ b/renderer/browser-window/main.tsx
@@ -49,7 +49,7 @@ interface State {
 }
 
 class App extends React.Component<Props, State> {
-  view?: Electron.BrowserView;
+  view: Electron.BrowserView | null;
 
   resizeObserver?: ResizeObserver;
 
@@ -63,6 +63,8 @@ class App extends React.Component<Props, State> {
       title: "",
       isFav: false,
     };
+
+    this.view = null;
   }
 
   async componentDidMount() {
@@ -76,7 +78,7 @@ class App extends React.Component<Props, State> {
     this.view?.setBounds({ x: 0, y: 0, height: 0, width: 0 });
     this.view?.webContents.off("dom-ready", this.handleViewDOMReady);
     ipcRenderer.removeListener("viewReady", this.handleViewReady);
-    this.view = undefined;
+    this.view = null;
     this.resizeObserver?.disconnect();
   }
 
diff --git a/renderer/confirm-window/App.tsx b/renderer/confirm-window/App.tsx
index e788398..86144e1 100644
--- a/renderer/confirm-window/App.tsx
+++ b/renderer/confirm-window/App.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import React, { ReactNode } from "react";
 import WindowToolBar from "renderer/common/components/WindowToolBar";
 
 interface Props {}
@@ -10,7 +10,7 @@ class SettingWindow extends React.Component<Props, State> {
     super(props);
   }
 
-  render() {
+  render(): ReactNode {
     return (
       <div className="confirm-window">
         <WindowToolBar onClose={() => {}}>是否确认</WindowToolBar>
diff --git a/renderer/main-window/App.tsx b/renderer/main-window/App.tsx
index 47dbcad..354a86c 100644
--- a/renderer/main-window/App.tsx
+++ b/renderer/main-window/App.tsx
@@ -18,7 +18,6 @@ import {
 import { ReactNode } from "react";
 import { EllipsisOutlined } from "@ant-design/icons";
 import { ipcGetStore } from "./utils";
-import FeedImage from "./assets/feed.png";
 
 const {
   remote,