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
mocha - ESNext Transpliler の紹介
Search
Taketoshi Aono(青野健利 a.k.a brn)
December 14, 2017
Programming
1
290
mocha - ESNext Transpliler の紹介
古のEcmascript Harmony時代のTransplilerを自作していたので供養します。
Taketoshi Aono(青野健利 a.k.a brn)
December 14, 2017
Tweet
Share
More Decks by Taketoshi Aono(青野健利 a.k.a brn)
See All by Taketoshi Aono(青野健利 a.k.a brn)
document.write再考
brn
6
3.1k
Parsing Javascript
brn
14
9.3k
JSON & Object Tips
brn
1
510
CA 1Day Youth Bootcamp for Frontend LT
brn
0
980
Modern TypeScript
brn
2
820
javascript - behind the scene
brn
3
750
tc39 proposals
brn
0
900
プロダクト開発とTypeScript
brn
8
2.9k
React-Springでリッチなアニメーション
brn
1
720
Other Decks in Programming
See All in Programming
LLMとPlaywright/reg-suitを活用した jQueryリファクタリングの実際
kinocoboy2
4
670
Catch Up: Go Style Guide Update
andpad
0
170
高度なUI/UXこそHotwireで作ろう Kaigi on Rails 2025
naofumi
4
3.5k
WebエンジニアがSwiftをブラウザで動かすプレイグラウンドを作ってみた
ohmori_yusuke
0
170
Introducing ReActionView: A new ActionView-Compatible ERB Engine @ Kaigi on Rails 2025, Tokyo, Japan
marcoroth
3
920
AIで開発生産性を上げる個人とチームの取り組み
taniigo
0
130
Le côté obscur des IA génératives
pascallemerrer
0
120
monorepo の Go テストをはやくした〜い!~最小の依存解決への道のり~ / faster-testing-of-monorepos
convto
2
390
プロダクト開発をAI 1stに変革する〜SaaS is dead時代で生き残るために〜 / AI 1st Product Development
kobakei
0
490
XP, Testing and ninja testing ZOZ5
m_seki
2
300
ネイティブ製ガントチャートUIを作って学ぶUICollectionViewLayoutの威力
jrsaruo
0
130
複雑化したリポジトリをなんとかした話 pipenvからuvによるモノレポ構成への移行
satoshi256kbyte
1
770
Featured
See All Featured
Code Reviewing Like a Champion
maltzj
525
40k
4 Signs Your Business is Dying
shpigford
185
22k
Intergalactic Javascript Robots from Outer Space
tanoku
273
27k
Making Projects Easy
brettharned
119
6.4k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
15k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Become a Pro
speakerdeck
PRO
29
5.5k
Embracing the Ebb and Flow
colly
88
4.8k
Thoughts on Productivity
jonyablonski
70
4.9k
How to Think Like a Performance Engineer
csswizardry
27
2k
Designing for Performance
lara
610
69k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
114
20k
Transcript
Mocha ES Harmony Traspiler
Name @brn (ꫬꅿ⨳ⵃ) Occupation ؿٗٝزؒٝسؒٝآص،٥ط؎ذ؍ـؒٝآص، Company Cyberagent ،سذؙأةآؔ AI Messenger
Blog http://abcdef.gets.b6n.ch/ Twitter https://twitter.com/brn227 GitHub https://github.com/brn
剑ⴱח闐זֽלזזְֿהָ֮תׅկ ״ֻ罋ִֿכ⳿ؔث単ךדכ 兛鸐ך単⢪גְׅתׇ
הְֲֽד㢳ⴓ耀ְג ⡦חזזְ涪邌דׅ ׃ַ⡲ך2011/04דׅ ְׅתׇ וֲ׃ג⣘균׃ַׄׯ…
Ecmascript 2017 Ecmascript 2016 Ecmascript 6/2015 E Ec cm ma
as sc cr ri ip pt t h ha ar rm mo on ny y Ecmascript 5 Ecmascript 3
Harmony鋙ִגתַׅ
Ecmascript 4갽䮲ך穗꿀ַծ ぐكٝت٦װⰕד倜ז鎉铂堣腉ך 瘻㹀ח《穈꧊ת
䔲儗ES wikiהְֲل٦آָ㶷㖈׃גֶծ ֿחproposalהstrawmanהְֲ✳珏겲ך 堣腉فٗه٦ؠٕل٦آָ֮
鋅䔲儗ך猘כ չزٓٝأػ؎ٓ⡲պ הזךד֮ Babelזגתזְ
せכ؝٦ؼ٦אזָד Mochaח寸㹀װ mochaכ猘ךקֲָ⯓חㄏせ׃דׅ ذأزخ٦ٕךmocha״⯓ח ת֮⚅ח⳿׃גזְַ䠐זְֽו
Mocha C++ד剅ְEcmascript3ַEcmascript harmonyפךزٓٝأػ ؎ٓ V8䵧鯹׃גְךדreplד㹋ꥷח㢌䳔׃זָ㹋遤〳腉
Debuggable SourceMapָ㶷㖈׃גְזְ儗➿ךד ♧遤♧遤ח遤侧הtry-catch䮠ֿהדرغحؚ〳腉ח
function fibonacci(num) {! var a = 1, b = 0,
temp;! ! while (num >= 0){! temp = a;! a = a + b;! b = temp;! num--;! }! ! return b;! }!
function fibonacci(num) {! try {! __LINE__ = 2;! var a
= 1,! b = 0,! temp;! ! __LINE__ = 4;! while (num >= 0){! ! __LINE__ = 5;! temp = a;! ! __LINE__ = 6;! a = a+b;! ! __LINE__ = 7;! b = temp;! ! __LINE__ = 8;! num -- ;! }! __LINE__ = 11;! return b;! } catch(__mocha_error){! __Runtime.exceptionHandler(__LINE__, __FILE__, __mocha_error);! }! }!
Runtime harmonyך葿ղז㢌䳔遤ֲחRuntime欽䠐 Runtimeכⴓⶴׁגֶ䗳銲ח䘔ׄגappendׁ ׁח؝ٝػ؎ٕ儗חASTתד㢌䳔ׁךדծ鷄⸇ךزٓٝأ ؿؓ٦ي؝أزכקרئٗ
Transofrm Harmonyך圓俑הStrawmanח֮劢䱰欽ך،؎ر؍،ך⚕倯 䱰欽
وصُ،ٕכֿֿח http://brn.github.io/mocha/ja/
Ideas 㛇劤涸חכ䩛דػ٦؟剅ְג AST穈甧גגծַֿAST㢌䕎׃גְֻ 剑䖓כתAST鴬גؿ؋؎ٕח剅ֹ⳿׃
Hard to solve ،ٗ٦ꟼ侧ָ⦜ זח׃ػة٦ָٝ㢳ְ
// thisを束縛しない関数宣言 foo(x, y, z) -> console.log(this);! // thisを束縛しない関数式 var
foo = (x, y, z) -> console.log(this);! // thisを束縛する関数宣言 var foo = (x, y, z) => console.log(this);! // thisを束縛する関数式 foo(x,y,z) => console.log(this);!
File watcher ؿ؋؎ٕ湊鋔堣腉㣐㢌 windowծlinuxծmacדAPIָ麩ֲ… 㧅⼿׃גlinuxכInotifyծ⟃㢩כٕ٦فח׃
V8 V8ך⢪ְ倯项俱ָ㼰זֻג㣐㢌 أٖحسָ窃ה閯ךAbort鸬涪ׅ׃… ا٦أ铣纷湡ח…
libuv ׃ַ閯חLibuvתד䵧鯹׃גְגNode.JSךؙٗ٦ְٝז朐䡾 ח…
תה ⡲ך㣐㢌ֽו䖤ךכ㢳ַ ֿד䧭➣דֹתׅ ֿֿח㟌ָ֮ https://github.com/brn/mocha