title: why "npm run dev" not woking while i sccessfully install npm?
body: <p>i installed the npm using command-line successfully but when i use to run <code>npm run dev</code> it shows me some errors!</p>
  
  <p>i have tried to replace the code of <code>packages.json</code> provided on github and reinstall npm but still getting same error.</p>
  
  <pre><code>npm run dev
  
  C:\wamp64\www\shopping&gt;npm run dev
  'CALL "C:\Program Files\nodejs\\node.exe"
   "C:\Program Files\nodejs\\node_modules\npm\bin\npm-cli.js" prefix -g' is
    not recognized as an internal or external command,operable program or batch file.
  
  @ dev C:\wamp64\www\shopping
  npm run development
  
  npm ERR! file C:\WINDOWS\system32\cmd.exe;C:\Program Files\Java\jdk-10.0.2\bin;
  
  npm ERR! path C:\WINDOWS\system32\cmd.exe;C:\Program Files\Java\jdk-10.0.2\bin;
  
  npm ERR! code ELIFECYCLE
  
  npm ERR! errno ENOENT
  
  npm ERR! syscall spawn C:\WINDOWS\system32\cmd.exe;C:\Program Files\Java\jdk-10.0.2\bin;
  
  npm ERR! @ dev: `npm run development`
  
  npm ERR! spawn C:\WINDOWS\system32\cmd.exe;C:\Program Files\Java\jdk-10.0.2\bin;
  
  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\hp\AppData\Roaming\npm-cache\_logs\2019-08-28T19_22_32_311Z-debug.log
  </code></pre>
  
  <p><strong>package.json</strong></p>
  
  <pre><code>{
      "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": "^0.18",
          "bootstrap": "^4.1.0",
          "cross-env": "^5.2.0",
          "jquery": "^3.2",
          "laravel-mix": "^4.0.7",
          "lodash": "^4.17.5",
          "popper.js": "^1.12",
          "resolve-url-loader": "^2.3.1",
          "sass": "^1.15.2",
          "sass-loader": "^7.1.0",
          "vue": "^2.5.17"
      }
  }
  </code></pre>