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koa-router-rx

v0.4.0

Published

Reactive router middleware for koa

Downloads

18

Readme

koa-router-rx   npm version Build Status Coverage Status

Router middleware for koa 2.x based on koa-router and rxjs.

Introduction

koa-router-rx is an extension of koa-router that supports functions of RxJS Observables instead of regular middleware. Those functions are called "Epics", a concept directly inspired by redux-observable.

An Epic is a function that takes an Observable argument and returns an Observable:

(observable: Observable<A>) => Observable<B>

Usage

koa-router-rx works just like koa-router, except that it expects an Epic instead of a koa-style middleware:

import Koa from 'koa'
import RxRouter from '../lib'

const router = new RxRouter()

router.get('/hello', observable => observable.mapTo('Hello!'))

app.use(router.routes())
app.listen(3333)

See the example for more details.

Caveats