create-react-app typescript 不会运行 npm start

Question

我正在尝试使用打字稿create-react-app ，但 JSX 和 TS 似乎存在问题。 我阅读了几个可能的解决方案，但对我来说没有用。

我有：

• npm：版本 16.14.7
• 节点：版本 14.8.0

我使用了文档中的npx create-react-app my-app --template typescript

安装进行得很顺利，但是当我尝试运行npm start它给了我这个错误：

> my-app@0.1.0 start /Users/lukasbenediktson/Desktop/react-types/my-app
> react-scripts start

/Users/lukasbenediktson/Desktop/react-types/my-app/node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js:239
      appTsConfig.compilerOptions[option] = value;
                                          ^

TypeError: Cannot assign to read only property 'jsx' of object '#<Object>'
    at verifyTypeScriptSetup (/Users/lukasbenediktson/Desktop/react-types/my-app/node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js:239:43)
    at Object.<anonymous> (/Users/lukasbenediktson/Desktop/react-types/my-app/node_modules/react-scripts/scripts/start.js:31:1)
    at Module._compile (internal/modules/cjs/loader.js:1251:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1272:10)
    at Module.load (internal/modules/cjs/loader.js:1100:32)
    at Function.Module._load (internal/modules/cjs/loader.js:962:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! my-app@0.1.0 start: `react-scripts start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the my-app@0.1.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

我尝试按照tudor07 此处的建议更改node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js第 238 行：

} else if (parsedCompilerOptions[option] !== valueToCheck) {

到

} else if (parsedCompilerOptions[option] !== valueToCheck && option !== "jsx") {

这让我运行npm start并且服务器启动并运行。 但它现在显示它不会识别 JSX/TSX：

TypeScript error in /Users/lukasbenediktson/Desktop/react-types/my-app/src/App.tsx(7,5):
Could not find a declaration file for module 'react/jsx-runtime'. '/Users/lukasbenediktson/Desktop/react-types/my-app/node_modules/react/jsx-runtime.js' implicitly has an 'any' type.
  If the 'react' package actually exposes this module, consider sending a pull request to amend 'https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/react`  TS7016

     5 | function App() {
     6 |   return (
  >  7 |     <div className="App">
       |     ^
     8 |       <header className="App-header">
     9 |         <img src={logo} className="App-logo" alt="logo" />
    10 |         <p>

我的package.json看起来像这样：

{
  "name": "my-app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.11.4",
    "@testing-library/react": "^11.1.0",
    "@testing-library/user-event": "^12.1.10",
    "react": "17.0.1",
    "react-dom": "17.0.1",
    "react-scripts": "4.0.0",
    "typescript": "^4.0.3",
    "web-vitals": "^0.2.4"
  },
  "devDependencies": {
    "@types/jest": "^26.0.15",
    "@types/node": "^12.0.0",
    "@types/react": "^16.9.53",
    "@types/react-dom": "^16.9.8"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

感谢您的时间。

更新：解决方案（至少对我而言）

在我的tsconfig.json我改变了我的"compilerOptions":从"jsx": "react-jsx"到"jsx": "react" 。 请注意，我仍然需要按照tudor07 此处的建议在我的node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js第 238 行进行更改

如果它太“hacky”，请告诉我

Answer 1

就我而言，@captain-yossarian 是对的。 给定指定版本的 React ( react@17.0.1 ) 的过时类型 ( @types/react@16.9.4 react@17.0.1 )。 修理：

npm install --upgrade @types/react@17

Answer 2

我遇到了同样的问题，我删除了 tsconfig.json 文件，然后运行 ​​yarn start，它工作正常

可能是 create-react-app 的问题，我卸载了它然后重新安装