create-react-app typescript 不会运行 npm start

Question

我正在尝试使用 typescript

create-react-app

，但 JSX 和 TS 似乎存在问题。我读了一些可能的解决方案，但对我来说不起作用。

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

安装顺利，但是当我尝试运行

npm start

时，它给了我这个错误：

> [email protected] start /Users/.../react-types/my-app
> react-scripts start

/Users/.../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/.../react-types/my-app/node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js:239:43)
    at Object.<anonymous> (/Users/.../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! [email protected] start: `react-scripts start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the [email protected] 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在这里的建议

更改

node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js中的第238行：

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

到

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

这让我运行

npm start

并且服务器已启动并运行。但现在显示它无法识别 JSX/TSX:

TypeScript error in /Users/.../react-types/my-app/src/App.tsx(7,5):
Could not find a declaration file for module 'react/jsx-runtime'. '/Users/.../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"
    ]
  }
}

感谢您的宝贵时间。

更新：解决方案（至少对我来说）

在我的

tsconfig.json

中，我将我的

"compilerOptions":

从

"jsx": "react-jsx"

更改为

"jsx": "react"

。请注意，我仍然需要按照 tudor07 的建议在我的

node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js

中的第 238 行进行更改

如果它太“hacky”，请告诉我

Answer 1

就我而言，@captain-yossarian 说得对。给定指定版本的 React (

@types/[email protected]

)，过时的类型 (

[email protected]

)。修复：

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，它起作用了

可能是create-react-app有问题，我卸载了然后重新安装