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circe

v1.0.8

Published

A framework based on Koa v2.

Downloads

11

Readme

Circe

A framework based on Koa v2.

基于Koa v2的开发框架。

关于发音

英语:Circe[ˈsə:si]

中文:瑟茜[sè xī]

一、安装

$ npm install circe --save

二、入门

基于Koa2开发,保留与之相同的用法,所有api和中间件均兼容

// Koa
const Koa = require('koa')
const app = new Koa()
app.use(/* 中间件 */)
app.listen(8080. function () {/* 回调 */})

// Circe
const Circe = require('circe')
const circe = new Circe()
circe.use(/* 中间件 */)
circe.listen(8080. function () {/* 回调 */})

Koa实例对象的属性都有(具体的作用请查看Koa官方文档):

  • use
  • toJSON
  • inspect
  • on
  • proxy
  • middleware
  • subdomainOffset
  • env
  • context
  • request
  • response
  • keys

三、进阶

1. 可获得Koa实例和http server实例

const Circe = require('circe')
const circe = new Circe()

// koa实例
console.log(circe.app)

// server实例,可用于其他框架的结合,如socket.io
console.log(circe.server)

2. 更多的实例方法

circe.route(Router) 注册路由,传入路由对象

const Circe = require('circe')
const router = new Circe.Router()

router.get('/user', async () => { /* 中间件 */ })
router.post('/user', async () => { /* 中间件 */ })

circe.route(router)

circe.route(String) 注册路由,传入路由目录

//////// apis/user.js ////////////////////
const Circe = require('circe')
const router = new Circe.Router()

router.get('/user', async () => { /* 中间件 */ })
router.post('/user', async () => { /* 中间件 */ })

module.exports = router

//////// app.js ////////////////////
const path = require('path')
const Circe = require('circe')

// 将导入apis目录下的所有路由文件
circe.route(path.resolve(__dirname, 'apis'))

circe.inject(key, value) 注入内容到context,传入键和值参数

const Circe = require('circe')
const circe = new Circe()

circe.inject('$hello', function () { console.log('hello') })
circe.inject('$a.b', 'test' })
circe.inject('foo.bar', {a: 1, b: 2})

circe.use(asynct (ctx, next) => {
  ctx.$hello() // 打印'hello'
  ctx.$a.b // 'test'
  ctx.foo.bar.a // 1
  ctx.foo.bar.b // 2
})

circe.inject(object) 注入内容到context,传入对象和前缀

const Circe = require('circe')
const circe = new Circe()

circe.inject({a: 1, b: 2})
circe.inject({$c: 3, $d: 4})

circe.use(asynct (ctx, next) => {
  ctx.a // 1
  ctx.b // 2
  ctx.$c // 3
  ctx.$d // 4
})

3. 内置中间件全家桶

内置的中间件全都绑定在Circe类上,不需要再去npm或github上需找和对比需要的中间件,更多的中间件正在丰富中。

4. 拓展的context

除了koa自带的context方法和属性,circe对context进行了拓展:

  • ctx.success(data[, code]) 成功响应,详细文档查看responseApis
  • ctx.fail(msg[, code]) 错误响应,详细文档查看responseApis

5. 实用工具库

config 配置文件管理

const Circe = require('circe')
// 根据环境变量,读取目录下配置文件,支持多级目录
const config = Circe.config.from(__dirname + '/config')

示例1:

  • config
    • default.js
    • development.js
    • production.js

如有以上目录结构,且当前运行环境为development,将会整合default.jsdevelopment.js作为导出对象。

示例2

  • config
    • default
      • app.js
    • development
      • app.js
      • db.js
    • production
      • app.js
      • db.js
      • other.js

如有以上目录结构,且当前运行环境为production,将会整合defaultproduction目录下所有文件作为导出对象。

导出对象结构为:

{
  app: {...},
  db: {...},
  other: {...}
}

6. 支持typescript

已添加对typescript的声明,详情请看index.d.ts

import * as Circe from 'circe'

const circe = new Circe()

模板项目

circe-template - circe + babel circe-template-ts - circe + typescript