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
How to use Scala.js in real world?
Search
kyo_ago
January 29, 2016
Technology
1
2.1k
How to use Scala.js in real world?
kyo_ago
January 29, 2016
Tweet
Share
More Decks by kyo_ago
See All by kyo_ago
フロントエンドの リソース管理の話 TechFeed Summit#1 #techfeed #techfeedsummit
kyo_ago
5
2k
TypeScriptでType Match的なことをする話 #すえなみチャンス暑気払い
kyo_ago
1
1.3k
WebReplayから見るWeb開発の未来 #builderscon
kyo_ago
2
970
今日から始めるbugbounty
kyo_ago
0
280
karmaを使ったSPA向けE2Eテスト技法
kyo_ago
6
5.5k
E2Eという名称の指すもの
kyo_ago
0
2.5k
Other Decks in Technology
See All in Technology
【CEDEC2025】『ウマ娘 プリティーダービー』における映像制作のさらなる高品質化へ!~ 豊富な素材出力と制作フローの改善を実現するツールについて~
cygames
PRO
0
190
AIエージェントを支える設計
tkikuchi1002
12
2.9k
生成AIによる情報システムへのインパクト
taka_aki
1
230
データ基盤の管理者からGoogle Cloud全体の管理者になっていた話
zozotech
PRO
0
200
SAE J1939シミュレーション環境構築
daikiokazaki
1
210
猫でもわかるQ_CLI(CDK開発編)+ちょっとだけKiro
kentapapa
0
2.6k
ビジネス文書に特化した基盤モデル開発 / SaaSxML_Session_2
sansan_randd
0
220
相互運用可能な学修歴クレデンシャルに向けた標準技術と国際動向
fujie
0
170
株式会社島津製作所_研究開発(集団協業と知的生産)の現場を支える、OSS知識基盤システムの導入
akahane92
1
1.3k
人に寄り添うAIエージェントとアーキテクチャ #BetAIDay
layerx
PRO
8
1.7k
生成AI時代におけるAI・機械学習技術を用いたプロダクト開発の深化と進化 #BetAIDay
layerx
PRO
1
850
AI時代の知識創造 ─GeminiとSECIモデルで読み解く “暗黙知”と創造の境界線
nyagasan
0
190
Featured
See All Featured
Raft: Consensus for Rubyists
vanstee
140
7k
Building Flexible Design Systems
yeseniaperezcruz
328
39k
Intergalactic Javascript Robots from Outer Space
tanoku
272
27k
Measuring & Analyzing Core Web Vitals
bluesmoon
7
540
Build your cross-platform service in a week with App Engine
jlugia
231
18k
Thoughts on Productivity
jonyablonski
69
4.8k
The Power of CSS Pseudo Elements
geoffreycrofte
77
5.9k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
17k
KATA
mclloyd
31
14k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Into the Great Unknown - MozCon
thekraken
40
1.9k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Transcript
How to use Scala.js in real world? Kyo Ago
About me - work for ChatWork - using JavaScript for
9 years - using Scala for 0.5 year ࣗݾհɻChatWorkͰJavaScriptॻ͍ͯ·͢
Scala is great! Scala͍͍Ͱ͢Ͷʂ
But Ͱ
We want to develop UI, don't we!? UIΛ࡞Γ͍ͨʂ
Hmm... ͡Ό͋
Scala.js!! Scala.jsͰ͢Ͷʂ
Wait ... Ͱ
Scala.js is production ready yet? Scala.js͑Δͷʁ
Yes, it is! ͑Δ
1. "almost" compatible to Javascript JavaScriptͱͷޓੑ΄΅ສશ - bit-size in number
types - runtime semantics in exceptions - difference of regex defs
2. Type definition can be applied by using TypeScript ܕఆٛTypeScript͔ΒಋೖՄೳ
sjrd/scala-js-ts-importer
3. fast compile ߴͳίϯύΠϧ 1-2 seconds even when optimized fullOptJS
is used
4. small footprint ܰྔ Hello world! is 17KB(with fullOptJS). 6KB
with gzip
5. supports SourceMap SourceMapαϙʔτ
6. Java API implementation is going actively Java APIͷ࣮ਐΜͰΔ
Why isn't Scala.js widely used? ͡Ό͋ɺͳΜͰΘΕͯͳ͍ͷʁ
1. type safety is too much for small projects খنͳΒܕ҆શੑͷඞཁੑ͍
2. widely proven framework is preferred in large projects. େنͳΒ࣮͕ͳ͍ϑϨʔϜϫʔΫ࠾༻͠ʹ͍͘
3. difficult to call Scala.js from Javascript JavaScript͔ΒScala.jsΛݺͼग़͢ͷ͕͍͠ The part
actively developed right now
4. difficult to change if html was embedded to code
ίʔυʹhtmlΛຒΊࠐΉͱUIมߋʹऑ͍
5. compatibility/ability to track the latest version between other JavaScript
libraries JavaScriptϥΠϒϥϦͱͷޓੑɺ࠷৽൛ͷैੑ
6. debugging cost on browsers ϒϥβ্Ͱͷσόοάίετ
Then, we can't use, can we!? ͡Ό͋ɺ͑ͳ͍ͷʁ
Architecture can be an answer ΞʔΩςΫνϟͰղܾ
Scala.js should covers only logic. Scala.jsϩδοΫͷΈΛ࣮
Javascript should covers UI JavaScriptͰUIΛ࣮
communicate each other by JSON ͓ޓ͍ʹJSONͰ௨৴
UI should be contsructed by JSON UIJSON͔Βߏங͢Δ
Pros ར
1. reduces integration between Scala.js and JavaScript Scala.jsͱJavaScriptͷ࿈ܞ͕ݮΔ
2. we can develop in Scala.js similar to usual development
in Scala ௨ৗͷScala։ൃͱಉ͡Α͏ʹScala.jsͰ։ൃͰ͖Δ
3. flexibility of implementing UI UI࣮ͷࣗ༝্͕͕Δ
Cons ܽ
1. communication cost between Scala.js and UI Scala.jsͱUI෦ͱͷ௨৴͕සൃ͢Δ
2. logic is prone to be complex ϩδοΫ͕ෳࡶԽ͢Δ
Is this really achievable? ࣮ݱՄೳʁ
Yes, at least on the architecture level ΞʔΩςΫνϟతʹՄೳ
Let's discuss together at ChatWork Booth! ৄ͘͠ϒʔεͰ
Thank you! ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ
We're Hiring!! ͝Ԡื͓͍ͪͯ͠·͢ʂ http://corp.chatwork.com/ja/recruit/engineer/