koa-compose 合并中间件

下载

•  npm install koa-compose 

使用

• const Koa = require('koa')
  const compose = require('koa-compose')
  const app = new Koa()
  
  const a1 = (ctx, next) => {
    console.log('a1')
    next()
  }
  
  const a2 = (ctx, next) => {
    console.log('a2')
    next()
  }
  
  const a3 = (ctx, next) => {
    console.log('a3')
    next()
  }
  
  // app.use(a1)
  // app.use(a2)
  // app.use(a3)
  app.use(compose([a1, a2, a3]))
  
  app.use(async (ctx, next) => {
    ctx.body = 'hello koa'
  })
  
  app.listen(4001)

  将多个中间件传递到 compose 数组中，实现挂载数组中所有中间件