Towards a JavaScript Binary AST
In this blog post, I would like to introduce the JavaScript Binary AST, an ongoing project that we hope will help make webpages load faster, along with a number of other benefits. A little background Over the years, JavaScript has grown from one of the slowest scripting languages available to a high-performance powerhouse, fast enough that it can run desktop, server, mobile and even embedded appli
JavaScript Binary AST Engineering Newsletter #1
Hey, all cool kids have exciting Engineering Newsletters these days, so it’s high time the JavaScript Binary AST got one! Summary JavaScript Binary AST is a joint project between Mozilla and Facebook to rethink how JavaScript source code is stored/transmitted/parsed. We expect that this project will help visibly speed up the loading of large codebases of JS applications and will have a large impac
Parsing JavaScript - better lazy than eager?
ã“ã®ãƒ–ラウザ ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã®ã‚µãƒãƒ¼ãƒˆã¯çµ‚了ã—ã¾ã—ãŸã€‚サãƒãƒ¼ãƒˆã•ã‚Œã¦ã„るブラウザã«ã‚¢ãƒƒãƒ—グレードã—ã¦ãã ã•ã„。
[2015-02] 最近ã®JavaScript AST標準化ã®å‹•ã
以å‰æ›¸ã„ãŸè¨˜äº‹ã‹ã‚‰ã®ã©ã‚“ãªæ„Ÿã˜ã®å‹•ããŒã‚ã£ãŸã®ã‹ã¾ã¨ã‚ãŸã‚‚ã®ã§ã™ã€‚ 最近気ã«ãªã£ãŸJavaScript AST周りã®å‹•ã | Web Scratch å‰å›žã®è¨˜äº‹ 2015å¹´ã®1月å‰å¾Œã®å†…容ãŒä¸å¿ƒã§ã™ã€‚ å‰å›žã®ã«æ¯”ã¹ã€JavaScriptã®ã‚¨ã‚³ã‚·ã‚¹ãƒ†ãƒ ã®æ ¹å¹¹ã§ã‚‚ã‚るパーサやASTã®ä»•æ§˜ã¾ã‚ã‚Šã«ã¤ã„ã¦ã®å‹•ããŒæœ€è¿‘活発ãªã®ã§ã€ãã®è¾ºã‚’ä¸å¿ƒã«ã¾ã¨ã‚ã¦ã„ã¾ã™ã€‚ RReverser RReverserã•ã‚“ã¯ã“ã“最近ã®JavaScript ASTã«é–¢ä¿‚ã™ã‚‹ã¨ã“ã‚ãªã‚‰ã©ã“ã§ã‚‚ã¿ã‹ã‘ã‚‹ã¨æ€ã†ã®ã§ç´¹ä»‹ã€‚ 主ã«acornã®ã‚³ãƒŸãƒƒã‚¿ãƒ¼ã§ã‚‚ã‚ã‚Šã¾ã™ãŒã€å¾Œã»ã©å‡ºã¦ãã‚‹ESTreeã‚„Babelãªã©è‰²ã€…ãªã¨ã“ã‚ã§æ´»å‹•ã—ã¦ã„ã¾ã™ã€‚ ã¾ãŸasterã¨ã„ã†ASTã®åŠ¹çŽ‡çš„ã«å‡¦ç†ã§ãるツールãƒã‚§ã‚¤ãƒ³ã‚’出ã—ãŸã‚Šã—ã¦ã„ã¾ã™ã€‚ AST周りã§ã‚ˆã見る人やパーサをã„ã‹ã«ã¾ã¨ã‚ã¦ã‚ã‚Šã¾ã™ã€‚ JavaScript AST Links. esto
![[2015-02] 最近ã®JavaScript AST標準化ã®å‹•ã](https://cdn-ak-scissors.b.st-hatena.com/image/square/b26f7dc8f9e783316f720174980e93c627438d74/height=288;version=1;width=512/https%3A%2F%2Fefcl.info%2Fpublic%2Ffavicon.png)
俺ã®altjsãŒã“ã‚“ãªã«ç°¡å˜ã«pegjsã§ä½œã‚Œã‚‹ã‚ã‘ãŒãªã„ - Qiita
ã“ã®è¨˜äº‹ã¯JavaScript Advent Calender 2014ã®10日目ã®è¨˜äº‹ã§ã™ã€‚ altjs作りãŸã„ã‚„ã‚ åŠå¹´å‰ã«ã“ã‚“ãªLTã‚’ã‚„ã£ãŸã€‚未完æˆã§æ”¾ç½®ã™ã‚‹ã®ã¯æ°—æŒã¡æ‚ªã„ã®ã§ã€ã“ã®æ©Ÿä¼šã«å®Œæˆã•ã›ã‚ˆã†ã¨æ€ã£ãŸâ€¦ã‚“ã ã‘ã©ã€advent当日ã®æ™‚点ã§ã¾ã 完æˆã—ã¦ãªã„。ã™ã¾ã‚“ãªã€‚ãŸã 知見ã¯å¤šå°‘溜ã¾ã£ãŸã®ã§ã€åŸºæœ¬çš„ãªaltjsã®ä½œã‚Šæ–¹ã¨åˆã‚ã›ã¦ç´¹ä»‹ã—よã†ã¨æ€ã†ã€‚ altjsã£ã¦ã©ã†ã‚„ã£ã¦ä½œã‚“ã®ï¼Ÿ 方法ã¯æ§˜ã€…ã ã‘ã©ã€ 文法をPEG(pegjs)ã§è¨˜è¿°ã™ã‚‹ ソースコードをã€Parser APIã§å®šç¾©ã•ã‚Œã‚‹ASTã«å¤‰æ›ã™ã‚‹ãƒã‚¸ãƒƒã‚¯ã‚’書ã 変æ›ã•ã‚ŒãŸASTã‚’ã€escodegenã§JavaScriptã®ã‚³ãƒ¼ãƒ‰ã«ã•ã‚‰ã«å¤‰æ›ã™ã‚‹ ã¨ã„ã†ã®ãŒä»Šãªã‚‰ã‚„ã‚Šã‚„ã™ã„ã¨æ€ã†ã€‚çµå±€ã‚る構文をjsã«å¤‰æ›ã™ã‚‹ã ã‘ã§ã€å¤‰æ›ã¯æ—¢å˜ã®ãƒ„ールを使ãˆã‚‹ã®ã§ã€å®Ÿã¯ãã‚“ãªã«åºƒã„知è˜ã‚’è¦æ±‚ã›ãšã€0ã‹ã‚‰çŽ‹é“ã®ã‚³ãƒ³ãƒ‘イラを作るã¿ãŸã„ãªå£®å¤§ãªè©±ã«
JavaScript on the GPU
I experimented with running JavaScript on the GPU - see how the first iteration of the experiment went.Read less
AST - the only true tool for building JavaScript
The document discusses working with code abstract syntax trees (ASTs). It provides examples of parsing code into ASTs using libraries like Esprima, querying ASTs using libraries like grasp-equery, constructing and transforming ASTs, and generating code from ASTs. It introduces aster, an AST-based code builder that allows defining reusable AST transformations as plugins and integrating AST-based bu
ʕ　 ﾟ皿ﾟ Ê” Golangã®ASTã‚’å¯è¦–化ã™ã‚‹ãƒ„ールを作ã£ãŸ - ( ꒪⌓꒪) ゆるよã‚日記
ã¯ã˜ã‚ã¦ã®Go Runtime。 ã¨ã„ã†ã“ã¨ã§ã€Goã®AST(抽象構文木)ã‚’å¯è¦–化ã™ã‚‹ãƒ„ールを書ã„ãŸã€‚ yuroyoro/goast-viewer · GitHub goast.yuroyoro.net ã«ãƒ‡ãƒ¢ãŒã‚る。 go/astパッケージを使ã†ã¨ã€Goã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‹ã‚‰AST(抽象構文木)ã‚’å¾—ã‚‹ã“ã¨ãŒã§ãる。 ã‚ã¨ã¯ã“れをAngulerJSã¨ã‹ä½¿ã£ã¦ã¿ã¦å¯è¦–化ã—ã¦ã¿ãŸã ã‘。 ソースコードをアップãƒãƒ¼ãƒ‰ã™ã‚‹ã‹ã€å…¥åŠ›ã—ã¦parseボタンを押ã™ã¨ã€å³å´ã«ASTãŒå±•é–‹ã•ã‚Œã‚‹ã€‚マウスオーãƒãƒ¼ã™ã‚‹ã¨ASTã®nodeã«è©²å½“ã™ã‚‹ã‚³ãƒ¼ãƒ‰ãŒé¸æŠžçŠ¶æ…‹ã«ãªã‚‹ã€‚ 以下ã®æ‰‹é †ã§ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã§ãã‚‹ã¾ã™ $ go get -d github.com/yuroyoro/goast-viewer $ cd $GOPATH/src/github.com/yuroyoro/goast-viewer $ make instal
Source Mapを扱ã†é–¢é€£ãƒ©ã‚¤ãƒ–ラリã®ã¾ã¨ã‚
ã“ã®è¨˜äº‹ã¯Source Mapã«å¯¾å¿œã—ãŸä½•ã‹ã‚’作るãŸã‚ã®ãƒ©ã‚¤ãƒ–ラリã¨ã‹ä»•æ§˜ã¨ã‹ã«ã¤ã„ã¦èª¿ã¹ã¦ãƒ¡ãƒ¢ã£ãŸè¨˜äº‹ã§ã™ã€‚ 利用ã™ã‚‹å ´åˆã®è©±ã¯Source Maps 101 – Tuts+ Code Tutorialç‰ æ¤œç´¢ã™ã‚Œã°è‰²ã€…出ã¦ãã‚‹ã¨æ€ã„ã¾ã™ã€‚ Source Mapã¨ã¯ Source Map Revision 3 Proposal – Google ドã‚ュメント 仕様 #JSオジサン㧠Source Map ã«ã¤ã„ã¦è©±ã—ã¦ãã¾ã—㟠: document source mapã®æ¦‚è¦ JavaScriptã®Source Mapã®å†…部表ç¾ã«ã¤ã„㦠Base64ã®mappings部分ã®ä»•çµ„ã¿ source-map-visualization ビジュアライズツール mozilla/source-map source map ã®ã‚³ã‚¢ã€€ã¨è¨€ãˆã‚‹ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«(色々ãªãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ãŒä½¿ã†) source map ã®
Building JavaScript Tools
Greg Franko 2/12/2014 Use arrow keys to navigate About The Speaker Greg Franko JavaScript Engineer at AddThis Open Source Developer Author Speaker What Types of Tools Are We Talking About? Static Code Analysis What Do These Tools Typically Do? Analyze Code Performance, Maintainability, Validation Generate Code For Transpilers, Minifiers, Visualizers Could You Provide Some Examples? UglifyJS Compre
最近気ã«ãªã£ãŸJavaScript AST周りã®å‹•ã
最近ã€æ°—ã«ãªã£ãŸJavaScript AST関係ã®ã‚‚ã®ã«ã¤ã„ã¦ã®ãƒ¡ãƒ¢ã§ã™ã€‚ JavaScript ASTã«ã¤ã„ã¦ã¯ä»¥ä¸‹ãªã©ã‚’見ã¦ä¸‹ã•ã„。 カジュアルJavaScript AST JavaScript AST Walker esnext 元々ES6 Module Transpilerç‰ã‚„ã£ã¦ã„ãŸSquare社ãŒesnextã¨ã„ã†ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã‚’ç«‹ã¡ä¸Šã’ã¾ã—ãŸã€‚ esnextã¯Traceurã¨åŒæ§˜ã«ES6ã®ã‚³ãƒ¼ãƒ‰ã‚’今日ã®JavaScriptã«å¤‰æ›ã™ã‚‹ãƒ„ールã§ã™ã€‚ @eventualbuddhaã•ã‚“ãŒãƒ¡ã‚¤ãƒ³ã§ã‚„ã£ã¦ã„ã¦ã€ãã‚Œãžã‚Œã®ã‚·ãƒ³ã‚¿ãƒƒã‚¯ã‚¹ã®å¤‰æ›ã¯es6-spreadã®ã‚ˆã†ã«ã€ã²ã¨ã¤ã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¨ã—ã¦åˆ†ã‘ã¦ä½œã‚‰ã‚Œã¦ã„ã¾ã™ã€‚ ã¾ãŸå¤‰æ›ã®æ›¸ã方も大体統一ã—ãŸã‚„ã‚Šæ–¹(ã¾ã‚一人ã§å¤§ä½“書ã‹ã‚Œã¦ã‚‹ã®ã§)ãŒå–られã¦ã„ã¦ã€ Facebookã®@benjamnã•ã‚“ãŒä½œã£ã¦ã„ã‚‹ast-typesã¨recastを使ã£
JavaScript AST Walker
JavaScript AST Walker JavaScript ASTを見ã¦å›žã‚‹ Agenda JavaScript ASTã¨ã¯ JS AST Structure JS AST as JSON Try JavaScript AST パーサ ジェãƒãƒ¬ãƒ¼ã‚¿ãƒ¼ ã“ã“ã¾ã§ã®ã¾ã¨ã‚ More detail コードカãƒãƒ¬ãƒƒã‚¸ãƒ„ール istanbul-html istanbul-karma blanket [ESLint](https://github.com/nzakas/eslint "ESLint") [reQUnit](https://github.com/azu/reQUnit "reQUnit") reQunit : before reQunit : after [regenerator](https://github.com/facebook/regenerator "regenerat
1
リリースã€éšœå®³æƒ…å ±ãªã©ã®ã‚µãƒ¼ãƒ“スã®ãŠçŸ¥ã‚‰ã›
最新ã®äººæ°—エントリーã®é…ä¿¡
j次ã®ãƒ–ックマーク
kå‰ã®ãƒ–ックマーク
lã‚ã¨ã§èªã‚€
eコメント一覧を開ã
oページを開ã
proposal-binary-ast/README.md at master · tc39/proposal-binary-ast
AST explorer
esprima-fbãŒdeprecatedã«ãªã‚‹è©±ã¨AST標準 · Issue #77 · efcl/efcl.github.io
Dynamic Code Analysis for JavaScript
{{#tags}}- {{label}}
{{/tags}}