The Modern (ES6) Middleware Composition.
const co = require('co')
const Middleware = require('trek-middleware')
const middleware = new Middleware()
middleware.push((ctx, next) => {
ctx.arr.push(1)
return next().then(() => {
ctx.arr.push(6)
})
})
middleware.push(async (ctx, next) => {
ctx.arr.push(2)
await next()
ctx.arr.push(5)
})
middleware.push(co.wrap(function * (ctx, next) {
ctx.arr.push(3)
yield next()
ctx.arr.push(4)
}))
const ctx = { arr: [] }
middleware.compose(ctx).then(() => {
console.log(ctx.arr.toString() === '1,2,3,4,5,6')
})
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