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Yearly Node.js 2018 - from scratch
Node.js 2018 ã¾ã¨ã‚ ã“ã®è¨˜äº‹ã¯ HTML5j ã‚«ãƒ³ãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ã§ç™ºè¡¨ã—ãŸã€ Node.js 2018 ã®ã¾ã¨ã‚ã®è©±ã‚’ãƒ–ãƒã‚°ã«èµ·ã“ã—ãŸã‚‚ã®ã§ã™ã€‚ speakerdeck.com ã¡ã‚‡ã£ã¨ãšã‚‹ã„ã§ã™ãŒã€ã“ã®è¨˜äº‹ä¸€ã¤ã§ Node.js ã‚¢ãƒ‰ãƒ™ãƒ³ãƒˆã‚«ãƒ¬ãƒ³ãƒ€ãƒ¼ã¨ JavaScript ã‚¢ãƒ‰ãƒ™ãƒ³ãƒˆã‚«ãƒ¬ãƒ³ãƒ€ãƒ¼ã®25æ—¥ç›®ã®è¨˜äº‹ã§ã™ã€‚ 10æœˆã«Node.js v11 ãŒãƒªãƒªãƒ¼ã‚¹ Node.js v11 ã¯å¤‰æ›´ç‚¹ã¯ã„ãã¤ã‹ã‚ã‚Šã¾ã™ãŒã€v11.0.0ã§ã¯ãã‚“ãªã«å¤§ããªæ©Ÿèƒ½ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ä»£ã‚ã‚Šã«æ€§èƒ½å‘ä¸Šã¨å®‰å®šæ€§å‘ä¸Šã‚’è¡Œã£ã¦ã„ã¾ã™ã€‚ ã“ã‚Œã«ã¯Node.jsã®ã‚³ã‚¢å¤‰æ›´ãƒãƒªã‚·ãƒ¼ãŒé–¢ã‚ã£ã¦ã„ã¾ã™ã€‚ Node.js Core Policyã§ã‚ã‚‹ ã€ŒLess is Moreã€ Less is More ã¨ã„ã†è¨€è‘‰ã‚’Node.js ã®æ–‡è„ˆã§æœ€åˆã«ä½¿ã£ãŸã®ã¯ã“ã® jsconf ã§ã®ç™ºè¡¨ãŒåˆã‚ã¦ã§ã™ãã€‚ www.you
Rockridge 2019/02/03
JavaScriptã«ã¤ã„ã¦ã€ã€ŒW3C / WHATWG ã§ä½œã‚‰ã‚ŒãŸAPI ã¨ Node.js ã® API ã¯æ©ã¿å¯„ã‚Šã‚’ã—ã¦ã„ãã€ãªã‚‹ã¹ãå¯„ã›ã¦ã„ãã¾ã™ã€‚ã¾ãŸã€ãã®ä¸å¤®ã§ ECMA/TC39 ãŒä»•æ§˜ã‚’å›ºã‚ã‚‹ã¨ã„ã†é¢¨ã«ä¸‰è€…ãŒã¾ã¨ã¾ã‚ŠãªãŒã‚‰è©±ã‚’é€²ã‚ã¦ã„ãã€ã€‚

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1522491 - Enable dynamic module import in nightly builds
Rockridge 2019/02/03
Fx67ï¼šNightlyãƒãƒ£ãƒ³ãƒãƒ«ã§ã€JavaScriptã®dynamic importãŒãƒ‡ãƒ•ã‚©ãƒ«ãƒˆæœ‰åŠ¹åŒ–ã€‚

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1342012 - Implement the dynamic import() proposal
Shared components used by Firefox and other Mozilla software, including handling of Web content; Gecko, HTML, CSS, layout, DOM, scripts, images, networking, etc. Issues with web page layout probably go here, while Firefox user interface issues belong in the Firefox product. (More info)
Rockridge 2019/01/07
Fx66ï¼šJavaScriptã®dynamic importã‚’ã‚µãƒãƒ¼ãƒˆã€‚ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆç„¡åŠ¹ã§ã€å¯¾å¿œã™ã‚‹è¨å®šã¯javascript.options.dynamicImportã€‚å‚ç…§ï¼šhttps://qiita.com/tonkotsuboy_com/items/f672de5fdd402be6f065

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1506542 - Add run-time flag to enable bigint support
Rockridge 2019/01/07
Fx65ï¼šjavascript.options.bigintã®è¨å®šã‚’trueã«å¤‰æ›´ã™ã‚‹ã¨ã€BigIntï¼ˆä»»æ„ç²¾åº¦ã®æ•´æ•°ã‚’è¡¨ã™ãƒ—ãƒªãƒŸãƒ†ã‚£ãƒ–åž‹ï¼‰ã®ã‚µãƒãƒ¼ãƒˆãŒæœ‰åŠ¹åŒ–ã•ã‚Œã‚‹ã€‚å‚ç…§ï¼šhttps://sbfl.net/blog/2018/06/18/javascript-bigint/

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ãƒ•ã‚¡ãƒŸã‚³ãƒ³ã®ã‚¨ãƒŸãƒ¥ãƒ¬ãƒ¼ã‚¿ã‚’æ›¸ã„ãŸ - undefined
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Rockridge 2018/12/10
ã€Œãƒ•ã‚¡ãƒŸã‚³ãƒ³ã®ã‚¨ãƒŸãƒ¥ãƒ¬ãƒ¼ã‚¿ã‚’JSã§ã ã‚‰ã ã‚‰ã¨ä½œã£ã¦ãŸã€‚ãã“ãã“éŠã¹ã‚‹ã‚ˆã†ã«ãªã£ãŸã®ã§å…¬é–‹ã—ã¦ãŠãã€‚ã€ã€Œ ã²ã¨ã¾ãšJSç‰ˆã¯ã‚‚ã†ã„ã„ã‚„ã€ã¨ã„ã†æ°—æŒã¡ã«ãªã£ãŸã®ã§ä»Šã¯Rust + wasmã§æ›¸ãç›´ã—ã¦ã‚‹ã€‚ã€

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Rust

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Chromium adoption in Microsoft Edge and future of ChakraCore Â· Issue #5865 Â· Microsoft/ChakraCore Â· GitHub
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Rockridge 2018/12/09
ChakraCore JavaScriptã‚¨ãƒ³ã‚¸ãƒ³ã®é–‹ç™ºã¯ç¶æŒã•ã‚Œã‚‹ã€‚ã“ã‚Œã‚’æ¨ã¦ã¦ã—ã¾ã†ã¨ã€å°†æ¥MicrosoftãŒBlinkã‚’ãƒ•ã‚©ãƒ¼ã‚¯ã™ã‚‹ã¨ã„ã†é¸æŠžè‚¢ã‚’ã¨ã‚‹ä½™åœ°ã™ã‚‰ãªããªã£ã¦ã—ã¾ã†ã®ã§ã€èª°ã‹ãŒé ‘å¼µã£ã¦ä¸Šå±¤éƒ¨ã‚’æŠ¼ã—ã¨ã©ã‚ãŸã®ã‹ã‚‚ã€‚

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Google Developers Japan: æ©Ÿæ¢°å¦ç¿’ãŒã“ã‚Œã‹ã‚‰ã® Web ä½“é¨“ã¨ã‚¤ãƒ³ã‚¿ãƒ©ã‚¯ã‚·ãƒ§ãƒ³ãƒ»ãƒ‡ã‚¶ã‚¤ãƒ³ã®å¯èƒ½æ€§ã‚’æŠ¼ã—åºƒã’ã‚‹
.app 1 .dev 1 #11WeeksOfAndroid 13 #11WeeksOfAndroid Android TV 1 #Android11 3 #DevFest16 1 #DevFest17 1 #DevFest18 1 #DevFest19 1 #DevFest20 1 #DevFest21 1 #DevFest22 1 #hack4jp 3 11 weeks of Android 2 A MESSAGE FROM OUR CEO 1 A/B Testing 1 A4A 4 Accelerator 6 Accessibility 1 accuracy 1 Actions on Google 16 Activation Atlas 1 address validation API 1 Addy Osmani 1 ADK 2 AdMob 32 Ads 71 Ads API 11
Rockridge 2018/12/09
ã€ŒTensorFlow.js ã¯ WebGLï¼ˆ*ãƒ‡ãƒã‚¤ã‚¹ã® GPU ã‚’ç”¨ã„ã¦ãƒ–ãƒ©ã‚¦ã‚¶ä¸Šã§é«˜é€Ÿã«ç”»åƒå‡¦ç†ã‚’å®Ÿè¡Œã™ã‚‹ JavaScript APIï¼‰ã«å¯¾å¿œã—ã¦ãŠã‚Šã€ãƒ¢ãƒã‚¤ãƒ«ãƒ–ãƒ©ã‚¦ã‚¶ä¸Šã§ã‚‚æ©Ÿæ¢°å¦ç¿’ãƒ¢ãƒ‡ãƒ«ã®æŽ¨è«–ã‚’é«˜é€Ÿã‹ã¤é«˜é »åº¦ã§å®Ÿè¡Œã™ã‚‹ã“ã¨ãŒå¯èƒ½ã§ã™ã€‚ã€

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Mobile/ARM64 - MozillaWiki
Rockridge 2018/11/07
ARM64ç’°å¢ƒã®Androidç‰ˆFirefoxã‚„GeckoViewã§JavaScript JITã‚’ã‚µãƒãƒ¼ãƒˆã™ã‚‹è¨ˆç”»ã«ã¤ã„ã¦ã€‚ã¾ãšã¯Baselineã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã‚’å®Ÿè£…ã—ã€ãã®å¾ŒIonMonkeyã‚’è¿½åŠ ã™ã‚‹ã€‚

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1499026 - Update our in-tree ICU to 63
Rockridge 2018/11/05
Fx65ï¼šICUï¼ˆInternational Components for Unicodeï¼‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒ63ã¸ã¨ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã•ã‚ŒãŸã€‚å‚ç…§ï¼šhttp://site.icu-project.org/download/63

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l10n
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1466471 - Update our in-tree ICU to 62 and update to Unicode 11
Rockridge 2018/11/05
Fx63ï¼šICUï¼ˆInternational Components for Unicodeï¼‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒ62ã¸ã¨ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã•ã‚ŒãŸã€‚Unicode v11.0ã‚’ã‚µãƒãƒ¼ãƒˆã€‚å‚ç…§ï¼šhttp://site.icu-project.org/download/62 http://www.unicode.org/versions/Unicode11.0.0/

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l10n
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1445465 - Update our in-tree ICU to 61
Rockridge 2018/11/05
Fx61ï¼šICUï¼ˆInternational Components for Unicodeï¼‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒ61ã¸ã¨ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã•ã‚ŒãŸã€‚å‚ç…§ï¼šhttp://site.icu-project.org/download/61

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l10n
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1416723 - Remove SIMD.js
Rockridge 2018/08/28
Fx63ï¼šSIMD.jsã®å®Ÿè£…ã‚’å‰Šé™¤ã€‚ä»Šå¾Œã¯WebAssemblyã«ãŠã‘ã‚‹SIMDã®ã‚µãƒãƒ¼ãƒˆã«æ³¨åŠ›ã—ã¦ã„ãã“ã¨ã«ãªã‚‹ã‚ˆã†ã ã€‚å‚ç…§ï¼šhttps://github.com/tc39/ecmascript_simd

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ECMAScriptÂ® 2018 LanguageÂ Specification
Introduction1 Scope2 Conformance3 Normative Referencesâ—¢4 Overview4.1 Web Scriptingâ—¢4.2 ECMAScript Overview4.2.1 Objects4.2.2 The Strict Variant of ECMAScriptâ—¢4.3 Terms and Definitions4.3.1 type4.3.2 primitive value4.3.3 object4.3.4 constructor4.3.5 prototype4.3.6 ordinary object4.3.7 exotic object4.3.8 standard object4.3.9 built-in object4.3.10 undefined value4.3.11 Undefined type4.3.12 null value
Rockridge 2018/08/26
ECMA-262ã®ç¬¬9ç‰ˆã«å½“ãŸã‚‹ECMAScript 2018 Language SpecificationãŒ2018å¹´6æœˆã«å…¬é–‹ã•ã‚ŒãŸã€‚

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JSONã®æ´å²
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Rockridge 2018/07/22
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JavaScript engine fundamentals: Shapes and Inline Caches Â· Mathias Bynens
This article describes some key fundamentals that are common to all JavaScript engines â€” and not just V8, the engine the authors (Benedikt and Mathias) work on. As a JavaScript developer, having a deeper understanding of how JavaScript engines work helps you reason about the performance characteristics of your code. Note: If you prefer watching a presentation over reading articles, then enjoy the
Rockridge 2018/07/22
Googleã®V8é–‹ç™ºè€…ã«ã‚ˆã‚‹è¨˜äº‹ã€‚å‰åŠã§ä¸»è¦ãªJavaScriptã‚¨ãƒ³ã‚¸ãƒ³ã®æ§‹æˆã«è§¦ã‚Œã€å¾ŒåŠã§ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚„é…åˆ—ã€ã‚¤ãƒ³ãƒ©ã‚¤ãƒ³ã‚ãƒ£ãƒƒã‚·ãƒ¥ãªã©ã®å…·ä½“çš„ãªä»•çµ„ã¿ã‚’è§£èª¬ã—ã¦ã„ã‚‹ã€‚

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js-compile
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An Inline Cache isnâ€™t Just a Cache â€” Matthew Gaudet
If you read the Wikipedia page for Inline Caching, you might think that inline caches are caches, in the same way that you might talk about a processor cache, or a page cache for a webserver like memcached. The funny thing is, that really undersells how they're used in SpiderMonkey (and I believe other JS engines), and in hindsight I really wish I had known more about them years ago. The Wikipedia
Rockridge 2018/06/17
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Same-compartment realms
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Rockridge 2018/06/10
Firefox 62ä»¥é™ã€Zone/Compartment/Realmã®3åˆ†é¡žãŒç”¨ã„ã‚‰ã‚Œã‚‹ã‚ˆã†ã«ãªã£ãŸã€‚1ã¤ã®Zoneã¯ãŠãŠã‚€ã1ã¤ã®ã‚¿ãƒ–ã«å¯¾å¿œã—ã€è¤‡æ•°ã®Compartmentã‚’æŒã¤ã€‚1ã¤ã®Compartmentã¯è¤‡æ•°ã®Realmã‚’æŒã¤ã€‚

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GC
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ã‚¦ã‚§ãƒ–ãƒ–ãƒ©ã‚¦ã‚¶ã® off-the-main-thread API ã®è©±
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Rockridge 2018/05/14
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1409815 - (binjs-bytecode) [BinAST] Compile BinAST to bytecode
Rockridge 2018/05/05
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1432794 - Investigate improving off-thread parsing performance by skipping object prototype initialisation
Rockridge 2018/05/05
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