Windows平台 vscode运行调试会提示 

'babel-node' 不是内部或外部命令，也不是可运行的程序或批处理文件。

package.json如下

{
  "name": "koa-learn-2",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "dependencies": {
    "koa": "^2.11.0",
    "koa-body": "^4.1.1",
    "koa-combine-routers": "^4.0.2",
    "koa-helmet": "^5.2.0",
    "koa-json": "^2.0.2",
    "koa-router": "^7.4.0",
    "koa-static": "^5.0.0"
  },
  "devDependencies": {
    "@babel/core": "^7.7.7",
    "@babel/node": "^7.7.7",
    "@babel/preset-env": "^7.7.7",
    "@babel/register": "^7.7.7",
    "babel-loader": "^8.0.6",
    "clean-webpack-plugin": "^3.0.0",
    "cross-env": "^6.0.3",
    "nodemon": "^1.19.1",
    "webpack": "^4.41.4",
    "webpack-cli": "^3.3.10",
    "webpack-node-externals": "^1.7.2"
  },
  "scripts": {
    "start": "nodemon --exec babel-node src/index.js",
    "webpack:degbug": "node --inspect-brk ./node_modules/webpack/bin/webpack.js --inline --progress"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}