运行npm run dev时遇到的问题

在用Larvel 5.4做项目的时候，执行npm run dev命令出现些问题

查看下package.json

{
  "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": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "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 --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
  },
  "devDependencies": {
    "axios": "^0.16.2",
    "bootstrap-sass": "^3.3.7",
    "cross-env": "^5.0.1",
    "jquery": "^3.1.1",
    "laravel-mix": "^1.0",
    "lodash": "^4.17.4",
    "vue": "^2.1.10"
  }
}

由package.json可知最终执行了“cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js”。手动执行，结果如下: 开始安装cross-dev

安装失败，原来是node版本过低，那就升级node吧：brew upgrade node

再次执行npm run dev，又报错了。。。

重装下试试：

1. 删除node_modules目录、package-lock.json文件
2. npm install

再次运行npm run dev，成功啦！撒花！