@saber2pr/koa

koa in typescript.

# from npm
npm install @saber2pr/koa

# from github
git clone https://github.com/Saber2pr/-saber2pr-koa.git

API

1. compose

   组合多个 Job

2. Koa

   创建一个应用

Koa.body

这是个很重要的 API，返回 Koa 应用的 reducers !

它能用来做什么我想你已经猜到了 !

It' s a very useful api, it returns koa-app' s reducers!

I think you have known what it does mean.

Koa

const user = Koa()
  .use(async (ctx, next) => {
    if (ctx.request.url === '/user') {
      ctx.response.end('user!')
    } else {
      await next()
    }
  })
  .use(async (ctx, next) => {
    if (ctx.request.url === '/user/saber2pr') {
      ctx.response.end('saber2pr!')
    } else {
      await next()
    }
  })

// main app
Koa({ version: '0.0.1' })
  .use(async (ctx, next) => {
    if (ctx.request.url === '/') {
      ctx.response.end('Hello World!')
    } else {
      await next()
    }
  })
  .use(async (ctx, next) => {
    if (ctx.request.url === '/version') {
      ctx.response.end(ctx.version)
    } else {
      await next()
    }
  })
  // look here!
  .use(user.body())

  .listen(3000, () => console.log('http://localhost:3000'))

Notice(*)

• Typescript 的函数参数类型是双向协变的，这不安全！

  例如上面的 user.body()，它所依赖的 ContextType 需要主入口程序的 Context 提供，如果允许双向协变，它不会报错！

  强烈建议开启：--strictFunctionTypes

  {
    "compilerOptions": {
      "strictFunctionTypes": true
    }
  }

• Koa()中参数对象的 this 建议开启 noImplicitThis

  {
    "compilerOptions": {
      "noImplicitThis": true
    }
  }

start

npm install

npm start

npm test

Author: saber2pr

develope and test

you should write ts in /src

you should make test in /src/test

export your core in /src/index.ts!