我是新来的人,这是我的第一个申请。
我已经安装了最新版本的节点npm / npx。
我使用“ create-react-app my-app”创建了一个目录。
此后,当我进入目录并键入“ npm start”时,出现以下错误。请帮忙
C:\Users\admin\my-app>npm start
> my-app@0.1.0 start C:\Users\admin\my-app
> react-scripts start
Starting the development server...
events.js:288
throw er; // Unhandled 'error' event
^
Error: spawn cmd ENOENT
←[90m at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)←[39m
←[90m at onErrorNT (internal/child_process.js:469:16)←[39m
←[90m at processTicksAndRejections (internal/process/task_queues.js:84:21)←[39m
Emitted 'error' event on ChildProcess instance at:
←[90m at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)←[39m
←[90m at onErrorNT (internal/child_process.js:469:16)←[39m
←[90m at processTicksAndRejections (internal/process/task_queues.js:84:21)←[39m {
errno: ←[32m'ENOENT'←[39m,
code: ←[32m'ENOENT'←[39m,
syscall: ←[32m'spawn cmd'←[39m,
path: ←[32m'cmd'←[39m,
spawnargs: [ ←[32m'/s'←[39m, ←[32m'/c'←[39m, ←[32m'start'←[39m, ←[32m'""'←[39m, ←[32m'/b'←[39m, ←[32m'"http://localhost:3000"'←[39m ]
}
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.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\admin\AppData\Roaming\npm-cache\_logs\2020-04-12T15_19_48_491Z-debug.log
这是我的package.json
内容
{
"name": "my-app",
"version": "0.1.0",
"private": true,
"dependencies": {
"@testing-library/jest-dom": "^4.2.4",
"@testing-library/react": "^9.5.0",
"@testing-library/user-event": "^7.2.1",
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-scripts": "3.4.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
按照某些人的建议,我已经删除了node modules
文件夹,然后依次进行了npm update
和npm install
,但是仍然遇到相同的错误。任何帮助将不胜感激
答案 0 :(得分:0)
我以前见过。尝试删除您的node_modules
文件夹,然后运行npm update
,然后运行npm install
。
如果这不起作用,则可以从其他论坛中获得一些答案:
转到Control Panel > System
和Security > System > Advanced system settings > Enviroment variables
并将系统变量设置为路径C:\Windows\System32\
,然后重新启动系统。
react-scripts
降级为2.1.8: npm install react-scripts@2.1.8