在新的 create-react-app 项目中通过“as”关键字键入断言会导致`解析错误：意外标记，预期为“;”`

如何解决在新的 create-react-app 项目中通过“as”关键字键入断言会导致`解析错误：意外标记，预期为“;”`

我通过 yarn create react-app my-app --template typescript 创建了一个新的 CRA 项目，但在运行开发服务器 (yarn start) 时出现以下错误：

src/App.tsx
  Line 5:24:  Parsing error: Unexpected token,expected ";"

  3 | import "./App.css";
  4 | 
> 5 | const _window = window as any;
    |                        ^
  6 | 
  7 | const App: FC<{}> = () => {
  8 |   return <div />;

我只在 cra 服务器中得到错误，IDE Typescript 引擎认为代码没有问题。什么可能导致这种情况？

我的 package.json：

{
  "name": "xxx","version": "0.1.0","private": true,"dependencies": {
    "@emotion/react": "^11.1.4","@testing-library/jest-dom": "^5.11.4","@testing-library/react": "^11.1.0","@testing-library/user-event": "^12.1.10","@types/jest": "^26.0.15","@types/node": "^12.0.0","@types/react": "^16.9.53","@types/react-dom": "^16.9.8","@types/react-redux": "^7.1.14","react": "^17.0.1","react-dom": "^17.0.1","react-redux": "^7.2.2","react-scripts": "4.0.1","redux": "^4.0.5","redux-thunk": "^2.3.0","ts-action": "^11.0.0","ts-action-immer": "^3.0.3","typescript": "^4.1.0","web-vitals": "^0.2.4"
  },"devDependencies": {
    "@typescript-eslint/eslint-plugin": "^4.9.1","@typescript-eslint/parser": "^4.9.1","babel-eslint": "^10.1.0","eslint": "^7.15.0","eslint-config-airbnb": "^18.2.1","eslint-config-react-app": "^6.0.0","eslint-plugin-import": "^2.22.1","eslint-plugin-jsx-a11y": "^6.4.1","eslint-plugin-react": "^7.21.5","eslint-plugin-react-hooks": "^4.2.0","prettier": "^2.2.1"
  },"scripts": {
    "start": "react-scripts start","build": "react-scripts build","test": "react-scripts test","eject": "react-scripts eject"
  },"browserslist": {
    "production": [
      ">0.2%","not dead","not op_mini all"
    ],"development": [
      "last 1 chrome version","last 1 firefox version","last 1 safari version"
    ]
  }
}

tsconfig.json:

{
  "compilerOptions": {
    "target": "es5","lib": [
      "dom","dom.iterable","esnext"
    ],"allowJs": true,"skipLibCheck": true,"esModuleInterop": true,"allowSyntheticDefaultImports": true,"strict": true,"forceConsistentCasingInFileNames": true,"noFallthroughCasesInSwitch": true,"module": "esnext","moduleResolution": "node","resolveJsonModule": true,"isolatedModules": true,"noEmit": true,"jsx": "react-jsx","types": ["@emotion/react"]
  },"include": [
    "src"
  ]
}

不确定我可以提供哪些其他有用/相关的信息，尽管 SO 强迫我在这里写一些东西让我发布...

解决方法

将现有的 CRA 应用程序从 3.x 版更新到 4.x 版后，我遇到了同样的问题。将我的配置文件与新创建的 CRA 应用程序进行比较，我发现我的 package.json 缺少以下 eslint 配置

"eslintConfig": {
    "extends": [
      "react-app","react-app/jest"
    ]
  },