尝试运行“npm run dev”但它不起作用

Question

我在 windows 上开发一个新的 laravel 项目，到目前为止一切正常，但是当我尝试运行这个命令时，我遇到了这些错误：

C:\Users***\Documents\files\Laravel\RSWebSite > npm run dev

'CALL "C:\Program Files\nodejs\node.exe" "C:\Program 文件\nodejs\node_modules\npm\bin\npm-cli.js" 前缀 -g' n'est pas reconnu en tant que commande interne ou externe, 联合国计划 exécutable ou un fichier de commandes。

> @ dev C:\Users\***\Documents\files\Laravel\RSWebSite
> npm run development

npm ERR! code ELIFECYCLE
npm ERR! syscall spawn C:\windows\system32\cmd.exe;
npm ERR! file C:\windows\system32\cmd.exe;
npm ERR! path C:\windows\system32\cmd.exe;
npm ERR! errno ENOENT
npm ERR! @ dev: `npm run development`
npm ERR! spawn C:\windows\system32\cmd.exe; ENOENT
npm ERR!
npm ERR! Failed at the @ dev 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\***\AppData\Roaming\npm-cache\_logs\2019-10-22T14_06_36_677Z-debug.log

这是我的 package.json 文件：

{
    "private": true,
    "scripts": {
        "dev": "npm run development",
        "development": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
        "watch": "npm run development -- --watch",
        "watch-poll": "npm run watch -- --watch-poll",
        "hot": "cross-env NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
        "prod": "npm run production",
        "production": "cross-env NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
    },
    "devDependencies": {
        "axios": "^0.19",
        "bootstrap": "^4.0.0",
        "cross-env": "^5.1",
        "jquery": "^3.2",
        "laravel-mix": "^4.0.7",
        "lodash": "^4.17.13",
        "popper.js": "^1.12",
        "resolve-url-loader": "^2.3.1",
        "sass": "^1.20.1",
        "sass-loader": "7.*",
        "vue": "^2.5.17",
        "vue-template-compiler": "^2.6.10"
    }
}

Answer 1

你需要删除 package-lock.json 或 yarn.lock 然后清除 npm 缓存，你可以通过执行这些命令来做到这一点

rm -rf node_modules 
rm package-lock.json yarn.lock
npm cache clear --force
npm install

Answer 2

我在拉新项目时经常遇到这种情况。

尝试这样做。

npm install npm audit fix

然后有时再次运行它，原因是缺少包。