Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Universal JavaScript
Search
Koutarou Chikuba
May 31, 2017
Technology
21
22k
Universal JavaScript
Roppongi.rb #3 Rails x Frontend-Tech
Koutarou Chikuba
May 31, 2017
Tweet
Share
More Decks by Koutarou Chikuba
See All by Koutarou Chikuba
CI/CD 改善の勘所
mizchi
0
130
極限環境で最終ビルドを絞るためのフロントエンド設計
mizchi
16
5.6k
Server Side JavaScript のためのバンドル最適化
mizchi
5
7.4k
V8 as a container on CDN Edge worker
mizchi
6
2.3k
Edge Side Frontend という新領域
mizchi
35
14k
バンドル最適化マニアクス at tfconf
mizchi
8
4.5k
「たかがJavaScript」のその先 #TECHPLAY
mizchi
47
20k
Deno Node 両刀
mizchi
7
2.5k
「フロントエンド領域」を再定義する
mizchi
50
37k
Other Decks in Technology
See All in Technology
Shirankedo NOCで見えてきたeduroam/OpenRoaming運用ノウハウと課題 - BAKUCHIKU BANBAN #2
marokiki
0
170
Access-what? why and how, A11Y for All - Nordic.js 2025
gdomiciano
1
120
AWS 잘하는 개발자 되기 - AWS 시작하기: 클라우드 개념부터 IAM까지
kimjaewook
0
120
【Kaigi on Rails 事後勉強会LT】MeはどうしてGirlsに? 私とRubyを繋いだRail(s)
joyfrommasara
0
190
防災デジタル分野での官民共創の取り組み (2)DIT/CCとD-CERTについて
ditccsugii
0
110
KMP の Swift export
kokihirokawa
0
350
スタートアップにおけるこれからの「データ整備」
shomaekawa
2
340
Goに育てられ開発者向けセキュリティ事業を立ち上げた僕が今向き合う、AI × セキュリティの最前線 / Go Conference 2025
flatt_security
0
370
AI ReadyなData PlatformとしてのAutonomous Databaseアップデート
oracle4engineer
PRO
0
230
フルカイテン株式会社 エンジニア向け採用資料
fullkaiten
0
9.1k
能登半島災害現場エンジニアクロストーク 【JAWS FESTA 2025 in 金沢】
ditccsugii
0
190
M5製品で作るポン置きセルラー対応カメラ
sayacom
0
170
Featured
See All Featured
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
Making Projects Easy
brettharned
119
6.4k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6.1k
The World Runs on Bad Software
bkeepers
PRO
71
11k
Gamification - CAS2011
davidbonilla
81
5.5k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
The Art of Programming - Codeland 2020
erikaheidi
56
14k
Principles of Awesome APIs and How to Build Them.
keavy
127
17k
Building Flexible Design Systems
yeseniaperezcruz
329
39k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
33
2.5k
Scaling GitHub
holman
463
140k
Balancing Empowerment & Direction
lara
4
680
Transcript
Universal JavaScript - ࠓޙ10 Λੜ͖ൈͨ͘Ίʹ @mizchi Roppongi.rb #3 Rails x
Frontend-Tech
About Me • ϑϩϯτΤϯυ/SPA/Node.js ΤϯδχΞ • ήʔϜܥ => ڭҭܥ =>
Increments(Qiita) • 4݄͔ΒϑϦʔϥϯεͰ Redux Express middleware • ࠷ۙͷڵຯ: ReactNative / AMP / ےτϨ
Podcast ͡Ί·ͨ͠ https://genba.fm/ • #1 Awesome Vue • #0 React
vs Angular - ͋Δ͍ Functional JavaScript
͓ॻ͖ • Sprockets ͷࡴ͠ํ • ͓લͷ Webpack ࢮ͵ • ͜ͷઌ10ੜ͖ΔͨΊʹ
!!!!CAUTION!!!! !!!!!!!!!!!! ຊࢿྉͷະདྷ༧ଌࣗͷצͰ͋Γ ΛऔΕΔͷͰ͋Γ·ͤΜ !!!!!!!!!!!!
ୈҰ෦: Sprockets ͷ ࡴ͠ํ
ࠓͷจ຺ toshimaru_e ʮQiitaͷSprockesΛࡴͨ࣌͠ͷΛ͓ئ͍Ͱ͖·͔͢ʯ mizchi ʮ͍ʯ
SprocketsΛࡴͨ͠هࣄ • Qiita - app/assets/javascriptsҎԼͷJSΛશͯ commonjsͷrequireʹॻ͖͑Δ • Qiita - decafͰcoffeeͷίʔυΛES.next
ʹॻ͖͑Δ ҙ: 2͙Β͍લ
લఏ: ͳͥ Sprockets ࢮ͵͖͔ • Ϟδϡʔϧղܾʹ ES Modules ͱ͍͏ඪ४ ͕͋Δ
• JSͰϑΝΠϧείʔϓΛ࣋ͯͣ ࢀর͕άϩʔόϧ͠ ʹͳΔ • ධՁॱͷ੍ޚ͕͍͠ • RailsଆʹӅṭ͞Εͯͯ node πʔϧνΣΠϯΛ͍ʹ͍͘ • ͍ (ExecJS)
(2015࣌ͷ) Sprockets ͷࡴ͠ํ • browserify-rails ͷಋೖ, ޙʹ webpack • εΫϦϓτॻ͍ͯ
sprockets/require Λ commonjs ʹ • άϩʔόϧมͷࢀরΛ module.exports = ... ʹೖ • ࢀরղܾΛάϩʔόϧม͔Β require('...') ʹ
before // define window.App.View.render = function () {/* render */}
// use App.View.render()
after: commonjs // define on render.js module.exports = () =>
{/* render */} // use const render = require('./render') render()
࣌ͷ੍ • ES Modules Ͱͳ͘ commonjs ͳͷɺ coffee ͕΄ͱ ΜͲͩͬͨͨΊ
• ࠓͳΒ ES Modules
େࣄͳ͜ͱ: ߟ͑ํͷస • ׂ୯ҐΛ ࣮ߦίʔυ ͔Β ؔϞδϡʔϧ • Ϟδϡʔϧఆٛͱͦͷ࣮ߦΛڧ۠͘ผ͢Δ
• େࣄͳͷɺ ࣮ߦ࣌ͷ෭࡞༻ͷநग़ ͱɺ༧ଌ͢͠͞
ʮ࣮ߦίʔυʯ͔ΒʮؔϞδϡʔϧʯ // Bad document.title = 'foo' // Good // setTitle.js
export default function setTitle(title) { document.title = title } // runner.js setTitle('foo')
͍͍͍ͨ͜ͱ • ଞͷݴޠ/ڥͰʮධՁɺଈɺ࣮ߦɺ෭࡞༻์Γ͛ʯΈ͍ͨ ͳίʔυ͋·Γॻ͔ͳ͍ͣ • ͨΓલͷ͜ͱΛͨΓલʹ Γ·͠ΐ͏
ୈೋ෦: ͓લͷ Webpack ࢮ͵
Webpack ͷׂ • ES Modules ͷόϯυϧ • ֦ுࢠ͝ͱͷ transform •
։ൃ࣌ͷ Hot Reload • ࢀরղܾͷ Alias • etc...
ҙࣝ: ػೳ͕͋Γׂ͗ͯ͢Ε૭ • JSόϯυϥͷൣᙝΛӽ͍͑ͯͯ node.js Ͱ࠶ݱͰ͖ͳ͍ • ઃఆϑΝΠϧ͕Ͱ͔͍ & Α͘Θ͔ΒΜ
• css-modules ಋೖ͕ࠇຐज़Ͱਏ͍ • ίϐϖͰಈ͍ͨޙɺಈ͔ͳ͘ͳͬͨͱ͖ͷௐ͕ࠪେม
Universal JavaScript • Universal: ECMAScript ͷ Spec ΛຬͨͤɺͲΜͳ ڥͰಈ͘JS •
Isomorphic : ڱٛͷUniversalɻBrowser/Node͕ରɻ => Webpack Universal ੑΛഁյ͢Δ(͍͢͠)͔ΒϞδ ϡϥϦςΟ͕Լ͢ΔΑͱ͍͏
Babel Universal ͔ʁ • DOM Λ৮Βͣɺbabel-preset-es201* ΛͬͯΔ͏ͪ Yes •
ͨͩ͠ ES Modules ͷύεղܾ commonjs + α • lib/index ͱ͔ node_modules ͱ͔ • stage0~3, jsx, flow ඪ४֎
Native ES Modules ͷԻ
Native ES Modules • Safari 10.1 • Chrome M60(Canary) ϑϥάͰ
• Edge ϑϥάͰ
ES Moduls in Browser <script type="module"> import {addTextToBody} from './utils.js';
addTextToBody('Modules are pretty cool.'); </script> https://jakearchibald.com/2017/es-modules-in- browsers/
ES Modules ͕͋ͬͨΒ͑Δ͔ʁ • ༷తʹYES • ͨͩ͠HTTP/2Ͱͳ͍ͱύϑΥʔϚϯε͕େ෯ʹྼԽ͢ΔՄೳੑ • ES ModulesHTTP/2Ͱ෦ߋ৽ͷເΛݟΔ͔ʁ
• Cache aware server push - kazuho
ES Modules: ࠓޙͷ༧ • དྷʹ࣮͕ग़ἧ͏ • ࠷ॳ Fastly ͷΑ͏ͳ CDN
Ͱղܾ͞ΕΔͷͰ • কདྷతʹ nginx/h2o ͷϞδϡʔϧԽ͞Εͯ͑ΔΑ͏ʹͳ ͬͯΔͣ • ES Modules ͷ੩తղੳεςοϓඞཁ ϓϩμΫγϣϯͰ͑Δͷɺ͓ͦΒ͘ 2~3ޙ
Webpack ͷͱࢮ͵ཧ༝: ·ͱΊ • ศརͳׂΕ૭ • Universal ੑΛഁյ͠ίʔυͷϞδϡϥϦςΟ͕Լ • ωΠςΟϒͷ
ES Modules Ͱ૬ରతʹॏཁੑ͕Լ δϯΫεతʹɺDHH͕બΜͩϑϩϯτͷπʔϧࢮ͵
ଈࢮ͠ͳ͍ Webpack ͷ͍ํ • ES Modules ͷܨ͗ͱׂΓͬͯ͏ • ಠࣗͳtransformΛՄೳͳݶΓ babelଆಀ͕͢
• css-modules => styled-jsx • resolve.alias => babel-plugin-module-resolver
ୈࡾ෦: ͜ͷઌ10ੜ ͖ΔͨΊ
JavaScriptք Ϣʔβʔ: ΊͬͪΌଟ͍ ϢʔβʔͷόοΫΤϯυ: ଟ༷ JSͷฏۉ࿅: ͍ (ยखؒ)
ίϯηϯαεͱΔͷϚδͰແཧ
Easy > Simple Ͱ࠷ѱ
ϥΠϒϥϦઃܭऀͷؾ࣋ͪ • Easy ͰϢʔβʔΛὃͯ͠ɺSimple • npmքͰɺྲྀߦͬͨػೳ୯ػೳʹϒϨʔΫμϯ͞ΕΔ
Webpacker ͷ scaffold ͕Ϡόͦ͏ • ίϯηϯαεऔΕͳ͍ڥͰ, ୭͕ೲಘͰ͖ΔϘΠϥʔϓϨ ʔτΛߏங͢Δͷແཧ • ԼճΓΛࢧ͑ΔͷʹΑͦ͞͏͕ͩɺׂΕ૭…
ຊ࣭͚ͩݟ͍͍ͯͨ… • Agnostic ʹ Universal ͰϏδωεϩδοΫΛॻ͘ • Domain => UI
State => View => Event Handler ...
ϑϨʔϜϫʔΫͷׂ • ͳΜ͔Ͱ͔͍JSONΛ࡞Δ • ͳΜ͔Ͱ͔͍JSONΛViewʹΔ • ͳΜ͔Ͱ͔͍JSONΛ࡞ΔͭʹΠϕϯτΛૹΔ
ͦͦແݶͷύϑΥʔϚϯε͕͋Ε… const mainloop = () => { requestAnimationFrame(mainloop) document.body.innerHTML =
render(getState()) } mainloop()
UIϥΠϒϥϦࢮ͵ͷ͔ • Ϩϯμϥͷ WebComponents • ঢ়ଶͷཧΔ
ϑϩϯτͷྑ͍ઃܭͱ • x ίʔυ͕Βͳ͍ • ◦ ϞδϡʔϧΛँͰ͖Δ GUIͷਏ͞ɺઃܭ༷͕ίʔυʹΓʹ͍͘ͱ͜Ζ ࢦ͖͢ɺݎ࿚ͳઃܭΑΓɺࣜભٶͰʁͱ͍͏ఏҊ
͓ΘΓ