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[英]Why is npm start (after create-react-app) failing to run?
[英]create-react-app typescript won't run npm start
我正在嘗試使用打字稿create-react-app
,但 JSX 和 TS 似乎存在問題。 我閱讀了幾個可能的解決方案,但對我來說沒有用。
我有:
我使用了文檔中的npx create-react-app my-app --template typescript
安裝進行得很順利,但是當我嘗試運行npm start
它給了我這個錯誤:
> 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.
我嘗試按照tudor07 此處的建議更改node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js
第 238 行:
} else if (parsedCompilerOptions[option] !== valueToCheck) {
到
} else if (parsedCompilerOptions[option] !== valueToCheck && option !== "jsx") {
這讓我運行npm start
並且服務器啟動並運行。 但它現在顯示它不會識別 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
看起來像這樣:
{
"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"
]
}
}
感謝您的時間。
更新:解決方案(至少對我而言)
在我的tsconfig.json
我改變了我的"compilerOptions":
從"jsx": "react-jsx"
到"jsx": "react"
。 請注意,我仍然需要按照tudor07 此處的建議在我的node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js
第 238 行進行更改
如果它太“hacky”,請告訴我
就我而言,@captain-yossarian 是對的。 給定指定版本的 React ( react@17.0.1
) 的過時類型 ( @types/react@16.9.4
react@17.0.1
)。 修理:
npm install --upgrade @types/react@17
我遇到了同樣的問題,我刪除了 tsconfig.json 文件,然后運行 yarn start,它工作正常
可能是 create-react-app 的問題,我卸載了它然后重新安裝
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