[nodemon] app crashed - waiting for file changes before starting...

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视频里用 npx create-nuxt-app mt-app创建项目后，不能使用import ...from...。跟着老师修改webpack.js里的文件。修改如下

"scripts": {
    "dev": "cross-env NODE_ENV=development nodemon server/index.js --watch server --exec babel-node", //修改内容  --exec babel-node
    "build": "nuxt build",
    "start": "cross-env NODE_ENV=production node server/index.js --exec babel-node",//修改内容  --exec babel-node
    "generate": "nuxt generate"
 },

接着在项目目录创建 .babeltc文件，文件配置如下

{
    "presets": ["es2015"]
}

接着安装  npm install babel-preset-es2015，然后运行时，出现错误

$ npm run dev

> mt-app@1.0.0 dev D:\text\vue\mt-app
> cross-env NODE_ENV=development nodemon --exec babel-node server/index.js --watch server

[nodemon] 1.19.1
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: D:\text\vue\mt-app\server/**/*
[nodemon] starting `babel-node server/index.js`
'babel-node' ▒▒▒▒▒ڲ▒▒▒▒ⲿ▒▒▒Ҳ▒▒▒ǿ▒▒▒▒еij▒▒▒
▒▒▒▒▒▒▒▒▒ļ▒▒▒
[nodemon] app crashed - waiting for file changes before starting...

解决方法：

安装的时候需要安装另外两个babel-core和babel-cli，即： npm i babel-core babel-preset-es2015 babel-cli

问题解决