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
Bundle Side Optimization in Future JavaScript -...
Search
Yuku Kotani
November 27, 2021
Programming
2
3.1k
Bundle Side Optimization in Future JavaScript - JSConf JP 2021
JSConf JP 2021
Yuku Kotani
November 27, 2021
Tweet
Share
More Decks by Yuku Kotani
See All by Yuku Kotani
MCPとデザインシステムに立脚したデザインと実装の融合
yukukotani
4
1.4k
Scale out your Claude Code ~自社専用Agentで10xする開発プロセス~
yukukotani
9
3k
AI Coding Agent Enablement in TypeScript
yukukotani
19
12k
AI Coding Agent Enablement - エージェントを自走させよう
yukukotani
14
7.6k
Expoによるアプリ開発の現在地とReact Server Componentsが切り開く未来
yukukotani
3
600
React 19でお手軽にCSS-in-JSを自作する
yukukotani
5
860
僕が思い描くTypeScriptの未来を勝手に先取りする
yukukotani
12
3.3k
Web技術を駆使してユーザーの画面を「録画」する
yukukotani
14
7.8k
Capacitor製のWebViewアプリからReact Native製のハイブリッドアプリへ
yukukotani
5
1.7k
Other Decks in Programming
See All in Programming
ファインディ株式会社におけるMCP活用とサービス開発
starfish719
0
1.6k
HTMLの品質ってなんだっけ? “HTMLクライテリア”の設計と実践
unachang113
4
2.9k
旅行プランAIエージェント開発の裏側
ippo012
2
910
私の後悔をAWS DMSで解決した話
hiramax
4
210
今だからこそ入門する Server-Sent Events (SSE)
nearme_tech
PRO
3
230
Tool Catalog Agent for Bedrock AgentCore Gateway
licux
6
2.5k
Android端末で実現するオンデバイスLLM 2025
masayukisuda
1
150
rage against annotate_predecessor
junk0612
0
170
AI Coding Agentのセキュリティリスク:PRの自己承認とメルカリの対策
s3h
0
230
デザイナーが Androidエンジニアに 挑戦してみた
874wokiite
0
470
Laravel Boost 超入門
fire_arlo
3
220
JSONataを使ってみよう Step Functionsが楽しくなる実践テクニック #devio2025
dafujii
1
530
Featured
See All Featured
A designer walks into a library…
pauljervisheath
207
24k
jQuery: Nuts, Bolts and Bling
dougneiner
64
7.9k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
252
21k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
Side Projects
sachag
455
43k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
139
34k
Build your cross-platform service in a week with App Engine
jlugia
231
18k
YesSQL, Process and Tooling at Scale
rocio
173
14k
GraphQLの誤解/rethinking-graphql
sonatard
72
11k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
Facilitating Awesome Meetings
lara
55
6.5k
A Tale of Four Properties
chriscoyier
160
23k
Transcript
Bundle Side Optimization in Future JavaScript JSConf JP 2021 Yuku
Kotani (@MonchiFC)
2 Yuku Kotani (@MonchiFC) - Software Engineer @ Ubie Discovery
- AI https://ubie.app/ - TypeScript+Next.js / Kotlin+Spring Boot / GraphQL / Capacitor - Student (B3) @ - Blog https://yuku.dev 2
3 Web - - ECMAScript - - 3rd-party script
4 - (Dead Code Elimination) - (Mangling) - (Code Splitting)
- (Tree Shaking)
5 - (Dead Code Elimination) terser, Rollup - (Mangling) terser
- (Code Splitting) webpack, Rollup, Next.js, Nuxt - (Tree Shaking) webpack, Rollup
6 - (Dead Code Elimination) terser, Rollup - (Mangling) terser
- (Code Splitting) webpack, Rollup, Next.js, Nuxt - (Tree Shaking) webpack, Rollup
7 DDD
8 DDD
9 1st Approach: Dead Code Elimination
10 - - obj obj
11 TypeScript obj User obj isAdult getFullname getFullName
12 TS AST JavaScript TypeScript TS Compiler JS AST JavaScript
webpack JS AST DCE JavaScript terser JS ⾒
13 TS AST JavaScript TS Compiler JS AST JavaScript webpack
JS AST DCE JavaScript terser JS ⾒ TypeScript
14 TS AST JS JavaScript DCE SWC, Rome TypeScript
15 1 SWC Rome
16 2nd Approach: Tree Shaking
17 Tree Shaking JS/TS
18 Tree Shaking JS/TS A. - / `obj.method()` -
19
20 A. Bind-this operator
21 Bind-this operator func.bind() func.call() Stage-1 this JavaScript Bind Operator
https://yuku.dev/articles/2021-11-11/javascript-bind-this-op
22 Bind-this operator TypeScript This Parameter ⾒ This :: This
Parameter
23 2 ECMAScript
24 - class-based OOP - SWC Rome - ECMAScript JS-way
https://meety.net/matches/SwBiENIgCVFp