Node.js Web App Frameworks 2016 @yosuke_furukawa

Twitter: @yosuke_furukawa Github: yosuke-furukawa

Web Application Frameworks 2016

Express

Is Express dying? thread is opened…

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Don’t be afraid.

Express will be OK. That thread is FUD.

Discussion point • IBM is not OSS company. • Doug Willson will stay express project permanently? • Express release schedule is not clear… • when express v5 is released?!

Discussion point • IBM is not OSS company.
 → Node Foundation will incubate Express and those libraries. • Doug Willson will stay express project permanently?
 → Express WG is established. • Express release schedule is not clear…
 → DougWillson will move forward to the schedule.

So, don’t be afraid.

Koa

Koa v2.0.0

All files are translated from ES.next to ES5

Koa v2.0.0 // Koa application is now a class and requires the new operator. const app = new Koa() // uses async arrow functions app.use(async (ctx, next) => { try { await next() // next is now a function } catch (err) { ctx.body = { message: err.message } ctx.status = err.status || 500 } }) app.use(async ctx => { const user = await User.getById(ctx.session.userid) // await instead of yield ctx.body = user // ctx instead of this })

Koa v2.0.0 // Koa application is now a class and requires the new operator. const app = new Koa() // uses async arrow functions app.use(async (ctx, next) => { try { await next() // next is now a function } catch (err) { ctx.body = { message: err.message } ctx.status = err.status || 500 } }) app.use(async ctx => { const user = await User.getById(ctx.session.userid) // await instead of yield ctx.body = user // ctx instead of this }) Yes!!! you can use async/await on Koa v2!!

Should we use Koa v2.0 instead of Koa v1.0 ???

Not now. please wait. currently Koa v2.0 is alpha.

Koa v2 will have breaking changes from Koa v1.

Stay tunes…

hapi

hapi FAQ:

What is hapi? What difference from Express???

hapi stands for HTTP API server

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Express const express = require('express'); const app = express(); app.get('/hello', (req, res) => { res.send('hello world'); }); app.listen(‘3000’, (err) => { if (err) { throw err; } console.log('Server running at: 3000'); }); SPVUFSBTBDPEF

hapi const Hapi = require('hapi'); const server = new Hapi.Server(); server.connection({ host: 'localhost', port: 8000 }); server.route({ method: 'GET', path:'/hello', handler: (request, reply) => { return reply('hello world'); } }); server.start((err) => { if (err) { throw err; } console.log('Server running at:', server.info.uri); }); SPVUFSBTB DPOpHVSBUJPO

Express const express = require('express'); const app = express(); app.get('/hello', (req, res) => { app.render(‘view’, {name: ‘Tobi’}); }); app.listen(‘3000’, (err) => { if (err) { throw err; } console.log('Server running at: 3000'); }); SFTSFOEFSJTVTFGVMGPS SFOEFSJOHIUNM

hapi does not have res.render const Hapi = require('hapi'); const server = new Hapi.Server(); server.connection({ host: 'localhost', port: 8000 }); server.route({ method: 'GET', path:'/hello', handler: (request, reply) => { return reply('hello world'); } }); server.start((err) => { if (err) { throw err; } console.log('Server running at:', server.info.uri); }); SFQMZDBOIBOEMF#V⒎FS 1SPNJTF 4USFBN

Hapi can handle multi-type request lifecycle • onRequest • onPreResponse • onPreAuth • onPostAuth • onPreHandler • onPostHandler

hapi plugins • joi - testing library • shot - fake http req/res • vision - template rendering • chairo - micro services plugins • lab - test utilities

nodal

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nodal is supernova.

In other words, nodal is pretty young.

nodal is rich WAF.

nodal • Full staaaaaaaaaaaaaack • PostgreSQL supports (only!!) • Nodal can select server types • Branding Server (SEO-indexable) • API Server (just JSON) • Application Server (SinglePageApps, asset compilation) • nodal-angular

nodal class BlogPostsController extends Nodal.Controller { index() { BlogPost.query() .join('user') .join('comments') .where(this.params.query) .end((err, blogPosts) => { this.respond(err || blogPosts); }); } show() { BlogPost.find(this.params.route.id, (err, blogPost) => this.respond(err || blogPost)); } }

nodal future

conclusions

Node.js Web Application Frameworks 2016 • If you are express user, you don’t be afraid to continue to use express! • If you are koa v1.0 user or async/await lover, you would be better to be ready to upgrade koa v2.0. • If you would like to create microsevices nodes and getting tired of using express, you need to know more about hapi. • If you would like to know more new application frameworks, you should use nodal.