一个空目录执行
```
npm install koa
vi index.js
const koa = require('koa');
```
vscode 会提示 Could not find a declaration file for module 'koa'.
类似的包有好几个,运行不受影响,但是有个 koa-static 运行会报错的
```
npm install koa
vi index.js
const koa = require('koa');
```
vscode 会提示 Could not find a declaration file for module 'koa'.
类似的包有好几个,运行不受影响,但是有个 koa-static 运行会报错的
