Build your own background template koa + mysql

1, in which vscode open a folder

2、cnpm init

3, implement the required dependencies

 "dependencies": {
    "koa": "^2.7.0",
    "koa-bodyparser": "^4.2.1",
    "koa-router": "^7.4.0",
    "sequelize": "^5.8.7"
  }