ep30 Monthly Web 201711

published_at: 2017-12-05
guest: @myakura
toc: headings

Theme
Show Note

Chrome 動向
Firefox 動向
Safari 動向
Edge 動向
TPAC
WHATWG/W3C 標準動向
TC39 動向
IETF 動向
周辺動向
イベント

Theme

第 30 回のテーマは 2017 年 11 月の Monthly Web です。

Monthly Web のモチベーションについては以下。

ep25 Monthly Web 201707

Show Note

Chrome 動向

What's New In DevTools (Chrome 64)
- https://developers.google.com/web/updates/2017/11/devtools-release-notes
- Local Overrides: ほぼ localproxy
- Performance Monitor
- Console Sidebar
- Group similar Console messages
Chrome 63 Beta
Chrome 64 Dev
V8 (https://bit.ly/v8apichanges)
- V8 developers and their tool
  - https://v8project.blogspot.jp/2017/11/web-tooling-benchmark.html
  - https://v8.github.io/web-tooling-benchmark/
  - 擬似的なものではなく、実際に開発者が日々使っているツールなどを元に作ったベンチ
  - Babel, WebPack, TypeScript etc
  - 逆にツール/ライブラリ側のボトルネックを見つけてコントリビュートも
  - 5.8 から比べ Ignition(インタプリタ) + TurboFan(コンパイラ)ベースになって 60% 改善
- High Performance JS in V8
  - https://www.youtube.com/watch?v=1bZxs5J5n3M
- V8 JavaScript Engine: Orinoco: young generation garbage collection
  - https://v8project.blogspot.jp/2017/11/orinoco-parallel-scavenger.html
  - garbage collection の parallel Scavenger (orinoco) の解説
developer updates
- Take control of your scroll: customizing pull-to-refresh and overflow effects
  - https://developers.google.com/web/updates/2017/11/overscroll-behavior
  - overscroll-behavior の解説
- Resource Prioritization
  - https://developers.google.com/web/fundamentals/performance/resource-prioritization
  - Pre- シリーズの解説
- Dynamic import()
  - https://developers.google.com/web/updates/2017/11/dynamic-import
  - dynamic import の解説
Intents (https://bit.ly/blinkintents)
- Last week in Blink intents
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/lR-Drs2IaOw/DTRO3WGeAQAJ
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/mabpn9zsZ94/QwgGzStwBgAJ
- Ship: Wheel scroll latching and async wheel events
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/5jrqZmUBV9c/8xZNPV1nBAAJ
- Ship: Unicode property escapes in regular expressions
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/ojCSllClH2Q/rTrWpwk0AAAJ
- Ship: Fetch API: Request.cache
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/7aZGnBIlG5o/zkt8FPJPAAAJ
- Ship: Tighten prefetch mixed content checks
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/x0ROz-Io2bc/B9-sd6_dBwAJ
- Ship: Tighten secure context implementation in Workers
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/NNdqRpSfkow/nvCWkHtRAQAJ
- Implement and Ship: disown opener in a targeted navigation when noopener is used
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/Ucy5woezBFY/gqSMJOpOBAAJ
- Implement and Ship: prevent scrolling in HTMLElement.focus()
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/55sC81ciQgY/7jAt5YpgBAAJ
- Implement and Ship: Constructible & Subclassable EventTarget
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/fKk4d_Vj080/Pu73nu90BQAJ
  - EventTarget を継承できるようになり EventEmitter 的なことが DOM でできる
  - blog
- Implement and Ship: Numeric character reference fallback for file upload characters not representable in accept-charset
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/T11QWD2Jyyo/3oS5gCxYAQAJ
- Implement and Ship: Partial RTCRtpSynchronizationSource
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/I39cDWKyMJo/IO84ZEmYAQAJ
- Implement and Ship: Parse floats/decimals in CSS RGB and RGBA functions
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/zH51Atd-Vag/BMY1tOGaBAAJ
- Implement and Ship: nosniff for style
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/A_ICVgLl2kQ/mrD6bb2wBAAJ
- Implement and Ship: KeyboardEventInit keyCode, charCode support
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/wEm8WWPpxU4/S4sLZgQNBgAJ
- Implement and Ship: HTTP Too Early
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/KeQ2s0z6ZkM/GhGv3vhlBgAJ
  - TLS1.3 & QUIC での 0RTT でエラーになる場合のステータス 425 コードの実装
- Implement: TransformStream (part of the Streams Standard)
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/qrnnwQOGxTk/CthGq40SBQAJ
- Implement: Link rel=modulepreload
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/ynkrM70KDD4/g6W39QpsBQAJ
  - ES Module の preload には link rel=preload as=modulescript ではカバーしきれない
    - preload は 1 つのリソースを対象とするが ESM は依存も取りたい
    - 実際は fetch 結果ではなく module map (fetched ESM の格納先) が欲しい
    - https://github.com/whatwg/fetch/issues/486#issuecomment-282044172
  - そのために preload を直すのは厳しいので modulepreload を別途定義した
  - preload の blog
- Implement: Web Locks API
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/DpODIjdpUMg/hVQkjqeIAAAJ
  - tab や window をまたぐロックをとる mutex のようなもの
  - 複数タブで同時に同じ fetch をしないようにとか
- Implement: Send mouse back/forward buttons to javascript
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/3DjSQKQzKz8/FI9qbxHhAwAJ
- Implement and Ship: webVTT positionAlign and lineAlign
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/KRAyvMD4QZs/ABBp-5aLBAAJ
- Implement: Feature Policy for Autoplay
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/KTLndMOFLLA/VykZ7bg8BgAJ
  - cross origin iframe の autoplay を許可するかの policy
- Change: Geolocation maximum age
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/G29x6z_VkUs/7ickv4LGBgAJ
- Experiment: CSS line-height-step property
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/rDbHXbrowN0/DVwqDZ14AQAJ
  - Vertical Rythms を実現するプロパティ blog
  - flag 付きで ship したが mozilla から疑問の声が
  - Origin Trials で出しなおして、よりフィードバックを集めたい
  - CSS の Origin Trials は未サポートで M64 から入るのでそこから
  - Code Grid
- Experiment: AudioWorklet
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/oeBf3websgM/Smi7gQxjAQAJ
  - ScriptProcessorNode を置き換える。 2018 March まで Origin Trials 。
Loading Team weekly snippet
- Oct 30 - Nov 3
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/QG9JBkUcKS4/X3saKgZhAQAJ
- Nov 6 - Nov 10
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/KMXH1fDH99k/IF4uh1iIAQAJ
- Nov 13 - Nov 17
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/K_M03oZYD4E/lGv8L8FzCQAJ
Team Weekly Snippet
Other
- New UseCounter data now appearing on chromestatus.com
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/WcGwZcVy-4Y/3W1FVOC7AwAJ
  - Chrome Status での数え方を変えたからグラフがググっと増えるという話
- PSA: WebRTC M63 Release Notes
  - https://groups.google.com/forum/#!msg/discuss-webrtc/qDtSDxoNSII/69b6fAkxAQAJ
- Chromium Blog: Expanding user protections on the web
  - https://blog.chromium.org/2017/11/expanding-user-protections-on-web.html
  - リダイレクト抑止
- Web Platform Docs Briefing
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/HGqwKZ89tVI/p6h3OZcQCAAJ
  - MDN への貢献の仕方
- Loading Performance Survey
  - https://docs.google.com/forms/d/e/1FAIpQLSdvwpfzVY6iFaw9rraOH8Nm-yk2sruvgqGnvQnIGF3PweucsQ/viewform
  - ローディングボトルネックについてのアンケート
  - https://gist.github.com/KenjiBaheux/4574cb5b16e2f441c23316f0da44577f
  - この辺についてのリアルワールドでの使用感を調査
  - https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/eliminate-downloads
- Integrating the Payment Request API with a payment service provider
  - https://medium.com/dev-channel/integrating-the-payment-request-api-with-a-payment-service-provider-b6a23aa44bd6
  - Payment Request API の解説

Firefox 動向

These Weeks in Firefox:
- Issue 27: https://blog.nightly.mozilla.org/2017/11/07/these-weeks-in-firefox-issue-27/
- Issue 28: https://blog.nightly.mozilla.org/2017/11/22/these-weeks-in-firefox-issue-28/
Quantum 関連
- New in Firefox 58: Developer Edition
  - https://hacks.mozilla.org/2017/11/new-in-firefox-58-developer-edition/
  - css, js, vr, extension のデバッグ環境などが改善
- Firefox Quantum 57 for developers
  - https://developer.mozilla.org/en-US/Firefox/Releases/57
  - Firefox 57 === Firefox Quantum
- Entering the Quantum Era - How Firefox got fast again and where it's going to get faster
  - https://hacks.mozilla.org/2017/11/entering-the-quantum-era-how-firefox-got-fast-again-and-where-its-going-to-get-faster/
  - Quantum が Ship されるまでの道のりの話
- "Leading up to next weeks Firefox Quantum release, 75% of Firefox code were touched - close to 7 million lines."
  - https://twitter.com/GeorgFritzsche/status/928941592265752577
  - Quantum のリリースで Firefox の 75% のコードに変更があった
- AMO is down
  - https://bugzilla.mozilla.org/show_bug.cgi?id=1417451
  - Quantum リリースで、アクセスが増え AMO (Mozilla Add-ons) が落ちた
- Introducing the New Firefox: Firefox Quantum
  - https://blog.mozilla.org/blog/2017/11/14/introducing-firefox-quantum/
- Fast. For good. Launching the new Firefox into the World
  - https://blog.mozilla.org/blog/2017/11/14/fast-for-good-launching-the-new-firefox-into-the-world/
- Fearless Concurrency in Firefox Quantum
  - https://blog.rust-lang.org/2017/11/14/Fearless-Concurrency-In-Firefox-Quantum.html
- A Quantum Achievement: But it's Just the Beginning
  - https://medium.com/mozilla-tech/a-quantum-achievement-d7aa759a0ccb
- ::bholley - Boiling the Ocean, Incrementally - How Stylo Brought Rust and Servo to Firefox
  - https://bholley.net/blog/2017/stylo.html
Intents
- Data preference changes in Firefox 58
  - https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/jOsoutKBrG8/dOWwpaWZAwAJ
  - Phonton UI でテレメトリ収集に関する設定項目を修正
- Ship: CSP Violation DOM Events
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/c6PqC5RuKLs/7X9pu7m4AAAJ
- Ship: webvtt region
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/H2IL9XAO8dA/EjeQA8yuAwAJ
- Ship: Changes to 'X-Frame-Options: SAMEORIGIN'
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/tP_PiNFay7E/8gHVWT8OBQAJ
- Ship: CSS Shapes Module Level 1 (partial)
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/Cy2rIx2MACc/mXn9qHsFBQAJ
  - 非矩形画像の周囲を shape-outside で指定し、その周りに他の DOM を回り込ませる。
- Implement and Ship: HTMLTextAreaElement.autocomplete
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/NmPczVPmmDw/Z1PgqVbuAAAJ
- Implement and Ship: constructible EventTarget
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/lSlpiE2Y5j4/AqKZx19PAQAJ
- Implement (again): Shadow DOM
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/aJvUlADn-Hk/BYB52MgDBQAJ
- Implement: Custom Elements
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/BI3I0U7TDw0/6-W39tXpBAAJ
- Unship: as in image maps
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/JUB5K-sz6ek/F4hQWdDRBQAJ
- Unship: mozmm CSS unit
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/e0WCxTT2lEk/loLe3dMBBwAJ
- Unship: several internal CSS properties with Stylo
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/qicON0Kh-uI/TXoHDRYCAgAJ
- Unship: @-moz-document from content pages
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/RysotXvooV0/sSiJeJUYBQAJ
- Unship -moz-border-*-colors from content pages
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/D23VvCJO53Q/ArxzQxsYBQAJ
- Remove: WebVR on insecure contexts
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/bU2gil1SHkY/uEFLGTOcAwAJ
Site Compat
- Prefixed WebGL extensions are no longer supported
  - https://www.fxsitecompat.com/en-CA/docs/2017/prefixed-webgl-extensions-are-no-longer-supported/
  - MOZ_WEBGL_xxx 系が削除
- Legacy generator support has been removed
  - https://www.fxsitecompat.com/en-CA/docs/2017/legacy-generator-support-has-been-removed/
  - JavaScript 1.7 で入った非標準ジェネレータ関係が削除
- <a> elements can no longer be used as image map regions
  - https://www.fxsitecompat.com/en-CA/docs/2017/a-elements-can-no-longer-be-used-as-image-map-regions/
  - image map 用の <area> の代わりに <a> を使えたのを削除
- Array/generator comprehension support has been removed
  - https://www.fxsitecompat.com/en-CA/docs/2017/array-generator-comprehension-support-has-been-removed/
- Event.getPreventDefault has been removed
  - https://www.fxsitecompat.com/en-CA/docs/2017/event-getpreventdefault-has-been-removed/
- HTMLMediaElement.mozAutoplayEnabled has been removed
  - https://www.fxsitecompat.com/en-CA/docs/2017/htmlmediaelement-mozautoplayenabled-has-been-removed/
- mozmm CSS unit is no longer supported
  - https://www.fxsitecompat.com/en-CA/docs/2017/mozmm-css-unit-is-no-longer-supported/
- Conditional catch clauses are no longer supported
  - https://www.fxsitecompat.com/en-CA/docs/2017/conditional-catch-clauses-are-no-longer-supported/
- Data URL navigations on top level window will now be blocked
  - https://www.fxsitecompat.com/en-CA/docs/2017/data-url-navigations-on-top-level-window-will-now-be-blocked/
Other
- Firefox Security Team Newsletter Q3 17
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/NqvEZl82yIc/b3pwf3vOAwAJ
- Async Pan/Zoom (APZ) lands in Firefox Quantum
  - https://hacks.mozilla.org/2017/11/async-panzoom-apz-lands-in-firefox-quantum/
- Go beyond console.log with the Firefox Debugger
  - https://hacks.mozilla.org/2017/11/go-beyond-console-log-with-the-firefox-debugger/
  - デバッガの解説
- WebRender newsletter #9
  - https://mozillagfx.wordpress.com/2017/11/06/webrender-newsletter-9/
- Enable the JavaScript Start-up Bytecode Cache by default
  - https://bugzilla.mozilla.org/show_bug.cgi?id=1405738
- Firefox Features Google as Default Search Provider in the U.S., Canada, Hong Kong and Taiwan
  - https://blog.mozilla.org/blog/2017/11/14/firefox-features-google-as-default-search-provider-in-the-u-s-canada-hong-kong-and-taiwan/
- Implement 425 (Too Early)
  - https://hg.mozilla.org/integration/mozilla-inbound/rev/7df0e32add4c
- CSP: Implement 'worker-src'
  - https://hg.mozilla.org/integration/mozilla-inbound/rev/bbb4d0097263
- Block top-level navigations to data: URIs
  - https://hg.mozilla.org/integration/mozilla-inbound/rev/479f3105ad3b
  - data: URL にトップレベルからアクセスできないようになった
  - プレーンテキストなら OK らしい
  - https://hg.mozilla.org/integration/mozilla-inbound/rev/4017a9d65a94
  - Chrome でもちょい前からそうなっている
- Firefox Browser performance test
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/xs3sg5AZiNQ/wmK_O5DWAAAJ
- Firefox Private Browsing vs. Chrome Incognito: Which is Faster?
  - https://blog.mozilla.org/blog/2017/11/20/firefox-private-browsing-vs-chrome-incognito/
- Comparing Browser Page Load Time: An Introduction to Methodology
  - https://hacks.mozilla.org/2017/11/comparing-browser-page-load-time-an-introduction-to-methodology/
  - ページロードの測定方法解説
- Make VP9 the default decoder/encoder by default
  - https://bugzilla.mozilla.org/show_bug.cgi?id=1392961
  - WebRTC デフォルトエンコーディングが VP9 に
- Statement on DigiCert's Proposed Purchase of Symantec's CA | Mozilla Security Blog
  - https://blog.mozilla.org/security/2017/10/31/statement-digicerts-proposed-purchase-symantec/
- Browser Architecture Newsletter 5
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/UNUydxiVQnw/pXcUM1clBQAJ
- WebAssembly support now shipping in all major browsers
  - https://blog.mozilla.org/blog/2017/11/13/webassembly-in-browsers/
- @mmayo "43ms per page load saved, on average. As much as 100ms on sites like Facebook. Saving the planet a ms of compute at a time."
  - https://twitter.com/mmayo/status/927971464715702272
- WebRender newsletter #9
  - https://mozillagfx.wordpress.com/2017/11/06/webrender-newsletter-9/
- DASH playback of AV1 video in Firefox - Mozilla Hacks - the Web developer blog
  - https://hacks.mozilla.org/2017/11/dash-playback-of-av1-video/

Safari 動向

Safari Technology Preview 43
- https://webkit.org/blog/8016/release-notes-for-safari-technology-preview-43/
- Activated Cache Storage API by default
- Implemented drawImage(ImageBitmap) on 2D canvas
- Turned on the new Network Tab by default
- Turned on the Canvas Tab by default
- Added support for HAR Export in the Network Tab
- Enabled a JSON tree view for JSON content
- Added support for integrity="" on module scripts
- Exposed explicitly-set aria-sort value of "none" as an object attribute
Release Notes for Safari Technology Preview 44
- https://webkit.org/blog/8035/release-notes-for-safari-technology-preview-44/
- Payment Request がデフォルト有効に
Other
- [webkit-dev] Accessibility Object Model
  - https://lists.webkit.org/pipermail/webkit-dev/2017-November/029727.html
  - Accessibility Object Model の実装を発表
- [webkit-dev] Visual Viewport API
  - https://lists.webkit.org/pipermail/webkit-dev/2017-November/029751.html
  - Visual Viewport API の実装も発表
  - 実装しているのは Chrome のエンジニアらしい

Edge 動向

Introducing new JavaScript optimizations, WebAssembly, SharedArrayBuffer, and Atomics in EdgeHTML 16
- https://blogs.windows.com/msedgedev/2017/10/31/optimizations-webassembly-sharedarraybuffer-atomics-edgehtml-16/
- JavaScript optimizations
- WebAssembly
- SharedArrayBuffer
- Atomics
- etc
EdgeHTML
- 16: https://aka.ms/devguide_edgehtml_16
- 15: https://aka.ms/devguide_edgehtml_15
ChakraCore
Other
- Windows 10 バージョン 1607 (RS1) 以降、 HSTS 機能が常に有効となりました
  - https://blogs.technet.microsoft.com/jpieblog/2017/11/01/rs1_hsts_update/
  - 試験したが目立った障害がないためデフォルトオンに
  - レジストリによる無効化もできないように
  - HSTS したくない場合は InPrivate で
- 11 月の Internet Explorer / Microsoft Edge の累積的なセキュリティ更新プログラム
  - https://blogs.technet.microsoft.com/jpieblog/2017/11/15/securityupdate201711/
- New and improved Event and CSS inspection for Microsoft Edge DevTools
  - https://blogs.windows.com/msedgedev/2017/11/28/new-improved-event-css-inspection-microsoft-edge-devtools/

TPAC

TPAC 2017
Last week's may be our best TPAC ever
- https://www.w3.org/blog/2017/11/last-weeks-may-be-our-best-tpac-ever-w3c-strategic-highlights/
- 過去最高の出席数だったらしい
Web Platform WG
- Tue Nov 7 (Editing TF)
  - Agenda: https://github.com/w3c/WebPlatformWG/issues/93
  - Minutes: https://www.w3.org/2017/11/07-editing-minutes.html
  - Input Event Lv2, ContentEditable, A11y etc
- Thu Nov 9 (WebPlat general)
  - Agenda: https://github.com/w3c/WebPlatformWG/issues/94
  - Minutes: https://www.w3.org/2017/11/09-webplat-minutes.html
  - <input type=email>
    - username に ascii しか使えない問題
    - 消してしまえという話まで出た
    - unicode 使えるようにする方向に一応して wider review
  - Proposed HTML5.3 timeline
    - https://github.com/w3c/html/issues/1076
    - 5.2 がひと段落して 5.3 の話へ
    - 来年の 8/23 での CR を目指して作業していく
  - Entries API
    - https://wicg.github.io/entries-api/
    - Chrome が WebKit に入れたファイルシステム系のやつ
    - Promise ベースの新しい API
    - 他のブラウザも互換性のために入れ始めている
  - Async Cookie API / Cookie Change Evnets
    - https://github.com/WICG/cookie-store/blob/gh-pages/explainer.md
    - https://patrickkettner.github.io/cookie-change-events/
    - sw では非同期しかないから
  - A11y, AOM
    - https://github.com/WICG/aom/blob/gh-pages/explainer.md
    - ARIA はマークアップのみで DOM から変えかつギャップを埋めたい
    - DEMO:
      - https://tink.uk/playing-with-the-accessibility-object-model-aom/
      - https://wicg.github.io/aom/demos/#21
  - IndexedDB 2.0
    - 11/16 に PR になった
    - https://www.w3.org/TR/2017/PR-IndexedDB-2-20171116/
  - Intersection Observer
    - https://szager-chromium.github.io/io-v2/#index-defined-elsewhere
    - v2 の話が出ている
    - visibility を考慮するように
  - Other
    - Pointer Lock, UI Events, GamePad API etc
- Fri Nov 10 (Web Components)
  - Agenda: https://github.com/w3c/WebPlatformWG/issues/95
  - Minutes: https://www.w3.org/2017/11/10-webplat-minutes.html
  - Template instantiation
  - proposal が直前でそこまで議論はすすまず
  - F2F を別途やることに
  - Shadow parts
    - ::part(), ::theme() で shadow tree の中身を外に出す提案
  - Constructable style objects
  - Shadow Selection API
  - HTML Import replacement
  - デザインそのものをどうするか
  - F2F に持ち越し
  - Declarative Syntax
  - Web Components
    - https://github.com/w3c/webcomponents/issues/641#issuecomment-341299861
    - implement a polyfill of template-instantiation before even considering to add the API natively to the platform
      - https://github.com/w3c/webcomponents/issues/702
      - まず polyfill を実装しようという話に
    - WebPlatform Web Components F2F 2018
      - https://github.com/w3c/webcomponents/issues/713
      - 以下について F2F をもう一度やろうという話
      - Template instantiation
      - HTML modules
- Service Worker
  - https://github.com/w3c/ServiceWorker/issues/1206
  - minutes なし
WebAppSec
- https://bit.ly/webappsec-tpac-2017-agenda
- Minutes
  - https://www.w3.org/2017/11/06-webappsec-minutes.html
  - https://www.w3.org/2017/11/07-webappsec-minutes.html
- Signature-based Resource Loading Restrictions
  - https://github.com/mikewest/signature-based-sri
  - FYI: signature-based SRI in W3C WebAppSec
    - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0275.html
- HSTS Priming Implementation Report
  - https://docs.google.com/presentation/d/1-dR5p2G2MUge5lxtjcn8O_JpcPHENgBHSsL7XwPvCQY
- Origin Policy
  - https://wicg.github.io/origin-policy/
WebPerf
- minutes: https://bit.ly/webperf-tpac17
- LongTask v1, Web Lifecycle
  - https://docs.google.com/presentation/d/1OAQMgmnLo03O9BUr-mPNeA_Py0QQNuLt1n88cxCgfYs
- Time to Interactive
  - Slide: https://docs.google.com/presentation/d/1EnbHI5UlG8qgMq0gvTJOxICc4lH5A95Ud85kwze0ogc
  - Time to Interactive Explainer: https://docs.google.com/document/d/1l50v3ljDeUmj9qBsfdPc3wKe_1CY5KFYI1baye2NhYk
  - Detecting network quietness: https://docs.google.com/document/d/1y6NYcI2NyLMh88KVr2NaevdX2e-e03vL99Wn-gy_hVk
- Web Lifecycle
  - spanicker/web-lifecycle
    - https://github.com/spanicker/web-lifecycle/blob/master/README.md
  - A Lifecycle for the Web
    - https://docs.google.com/document/d/1UuS6ff4Fd4igZgL50LDS8MeROVrOfkN13RbiP2nTT9I
- Paint Timing
- Device Memory
- User Timing L3
  - https://docs.google.com/presentation/d/1d64Y4rtLCxobGgljVySU2CJpMPK5ksaiZuv3ka1dCVA
- Content policies
  - TransferSize and PauseDocument
    - https://docs.google.com/presentation/d/12W0EwMsyaSQjbWu-RjT-1URSmdLSkWzzvKzi2CvK7uo
  - jkarlin/pause-document
    - https://github.com/jkarlin/pause-document/
  - WICG/transfer-size
    - https://github.com/WICG/transfer-size
- Priority Hints
- Element Timing
  - https://docs.google.com/presentation/d/1Xha-RVH_bz5mzOHi1wI5BT8AEaLd-fSYW4BKpmJmy5A
- WebPerf WG spec audit: blockers, next steps
  - https://docs.google.com/document/d/106fu-2acn7JexSadxyKrxQny78WROk6u-Vwlte2zpgg
Web Assembly
- WebAssembly/meetings
  - https://github.com/WebAssembly/meetings/blob/master/2017/TPAC.md
- WebAssembly Proposals
  - https://docs.google.com/presentation/d/1uRpS79-kAoL3EoC7IxrJFU5G7V-Sxno9pm9rVjC20yE
- WebAssembly Exception Handling
  - https://docs.google.com/presentation/d/1bny3a9OFxDoJQpQXz_ZVN_bCqrTPNGEnotLaubyXrxY
- Host Bindings
  - https://docs.google.com/presentation/d/10vz6pldVOA8N3guv2jf4DCUujqz6jFmDnp37ax4SCc0
  - https://github.com/WebAssembly/host-bindings/blob/master/proposals/host-bindings/Overview.md
Web of Things
- https://www.w3.org/WoT/IG/wiki/F2F_meeting,_4-10_November_2017,_Burlingame,_CA,_USA#Agenda
Web Payments
- https://www.w3.org/2017/11/06-wpwg-minutes.html
- https://www.w3.org/2017/11/07-wpwg-minutes.html
- [NEW] ACTION: NickTR to help get Payment Method Manifest to call for consensus
- [NEW] ACTION: Max to look into getting resources for testing around payment method manifest
- Web Payments Working Group Patent Advisory Group (PAG) が再立ち上げ
  - https://www.w3.org/2017/11/wpwg-pag/
  - Visa Europe が新しい patent claim を Web Payments 関連仕様に対して行った(2 回目)
  - PAG で評価/検討する
Web Real-Time Communications
- https://www.w3.org/2011/04/webrtc/wiki/November_6_-_7_2017
- https://www.w3.org/2017/11/06-webrtc-minutes.html
- WebRTC が CR になったので、残作業とこの先の話
- WebRTCWG-2017-TPAC
  - https://docs.google.com/presentation/d/1Sg_1TVCcKJvZ8Egz5oa0CP01TC2rNdv9HVu7W38Y4zA
- QUIC: Add buffering support to RTCQuicStream
  - https://github.com/w3c/ortc/pull/795
- RTCQuicTransport: Addition of createStream and onstream
  - https://github.com/w3c/ortc/pull/783
- Status of QUIC API
  - https://github.com/w3c/ortc/issues/797
  - ORTC で QUIC をプロトコルと並行してやっていくことに
Accessible Rich Internet Applications (ARIA)
- https://www.w3.org/WAI/ARIA/wiki/Meetings/TPAC_2017
CSS (Houdini)
- Agenda, Minutes
- How CSS Grid Changes Everything
  - https://speakerdeck.com/jensimmons/how-css-grid-changes-everything
  - CSS Grid のプレゼン
- Constructable Stylesheet Objects
  - https://tabatkins.github.io/specs/construct-stylesheets/
W3C Developer Meetup in San Francisco
- https://www.w3.org/2017/11/Meetup/
- TPAC の後に開催
- You're only supposed to blow the bloody doors off!
  - https://decks.tink.uk/2017/tpac/index.html
- W3C wasm
  - https://docs.google.com/presentation/d/12jZRC1mBDkgUtIyHYO0a7HNMmOqtoLstApCZwvN0GN8
- How CSS Grid Changes Everything
  - https://speakerdeck.com/jensimmons/how-css-grid-changes-everything
Other
- TPAC Plenary -- 8 Nov 2017
  - https://www.w3.org/2017/11/08-tpac-minutes.html
- HTML meeting
  - https://www.w3.org/2017/11/14-html-minutes.html
- HTML-AAM (a11y api mapping)
  - https://lists.w3.org/Archives/Public/public-html/2017Nov/0012.html
  - CR に向けて issue と test をやっていく
- MDN + W3C Breakout Session
  - https://docs.google.com/document/d/19AIdw6T2l_3IkptkPCUMTnMpl8VVqW1mCr6o__KtHzI
- privacy.md
  - https://gist.github.com/mnot/96440a5ca74fcf328d23
  - Private Browsing とはどうあるべきかという話 by mnot
- TAG
  - https://github.com/w3ctag/meetings/tree/gh-pages/2017/11-SFO

WHATWG/W3C 標準動向

W3C Strategic Highlights
- https://www.w3.org/2017/11/w3c-highlights/
- https://www.w3.org/blog/news/archives/6651
- W3C が行なっていく作業と W3C Stories について
- Strengthening the core of the Web
  - Web Fonts, HTML5.2, Web Driver, WPT etc
- Building new Web capabilities
  - WASM, SpatialData, WebRTC, Grid/Flexbox, ActivityPub, WebSub etc
- Meeting Industry Needs
  - Publishing, Payment, EME, WoT, Automotive etc
- W3C Stories
  - new communications initiative の呼び名らしい
  - strengthening the core of the web の作業を指している
  - 最初は WASM を中心にするらしい
  - そうすれば WASM の上に色々構築できるから
Recommendation
Proposed Recommendation
- HTML 5.2
  - https://www.w3.org/blog/news/archives/6610
- DPub-ARIA 1.0 and DPub-AAM 1.0
  - https://www.w3.org/blog/news/archives/6617
- WAI-ARIA 1.1 and Core-AAM 1.1
  - https://www.w3.org/blog/news/archives/6613
- Indexed Database API 2.0
  - https://www.w3.org/blog/news/archives/6637
- HTML Media Capture
  - https://www.w3.org/blog/news/archives/6658
Candidate Recommendation
- WebRTC 1.0
  - https://www.w3.org/blog/news/archives/6619
  - https://lists.w3.org/Archives/Public/public-webrtc/2017Nov/0005.html
Working Draft
First Public Working Draft
Chartering
Other
- PSA: WebRTC testing session (November 6, 2017)
  - https://groups.google.com/forum/#!msg/discuss-webrtc/ZuMjcXr-YyQ/w04iSdYEAQAJ
  - KITE のデモをやるらしい
- Change of HTML editors
  - https://lists.w3.org/Archives/Public/public-html/2017Nov/0001.html
  - HTML5.2 の PR を期に Travis Leithead, Arron Eicholz, Alex Danilo の 3 人がエディタから退く
  - TPAC では 5.3 の話も始まった
  - 元 Opera の DevRel だった Bruce Lawson が新たな co-Editor に
  - https://www.brucelawson.co.uk/2017/editing-the-w3c-html5-spec/
- Why the web needs finer-grained origins
  - https://lists.w3.org/Archives/Public/public-webappsec/2017Nov/0001.html
  - https://docs.google.com/document/d/1sDVPKmhAdS4aioEguOUOneQkrHoXvZrHUEJEJuWYETI
  - suborigin について考察したドキュメント:
- Proposed Group: Web5G Based Communications Accessibility Business Group
  - https://www.w3.org/community/blog/2017/11/07/proposed-group-web5g-based-communications-accessibility-business-group/
  - https://w3c.github.io/web5g-workshop/
  - https://www.w3.org/blog/news/archives/6642
  - 5G 以降の Web についての話が始まっている
  - Workshop も予定されている
- Proposed Group: Improving Web Advertising Business Group | Community and Business Groups
  - https://www.w3.org/community/blog/2017/11/06/proposed-group-improving-web-advertising-business-group/
- Proposed Group: Merging of Web and Mobile APP Community Group | Community and Business Groups
  - https://www.w3.org/community/blog/2017/11/08/proposed-group-merging-of-web-and-mobile-app-community-group/
- Proposed Group: Optimize Web Technology for Native App Community Group | Community and Business Groups
  - https://www.w3.org/community/blog/2017/11/08/proposed-group-optimize-web-technology-for-native-app-community-group/
- Second Patent Advisory Group for Web Payments Working Group Launched | W3C News
  - https://www.w3.org/blog/news/archives/6655
- Add goal parameter checks to JavaScript by bmeck
  - https://github.com/whatwg/html/pull/3205
  - text/javascript;goal=module の goal: パラメータについて
- Remove <link rel=serviceworker>
  - https://github.com/w3c/ServiceWorker/pull/1220
  - foreign fetch が消えたので、もういらない。
- Publishing Working Group TPAC 2017 Summary
  - https://www.w3.org/blog/2017/11/publishing-working-group-tpac-2017-summary/
- HTML meeting: Tue 28th Nov
  - https://lists.w3.org/Archives/Public/public-html/2017Nov/0017.html
- CFC: Merge Web Workers into HTML
  - https://github.com/w3c/html/issues/1090
  - WebWorker の仕様を HTML にマージして良いか vote 中
- Add event throttling and debouncing to AddEventListenerOptions
  - debounce (最後に実行されてから N ms に一度だけイベントをあげる) の提案
  - https://discourse.wicg.io/t/add-event-throttling-and-debouncing-to-addeventlisteneroptions/2436
- Proposed Group: Art & Culture (Museums) On The Web Community Group
  - https://www.w3.org/community/blog/2017/11/17/proposed-group-art-culture-museums-on-the-web-community-group/

TC39 動向

Proposals Diff
- 主に TC39 Nov 2017 での更新
- https://github.com/tc39/agendas/blob/master/2017/11.md
- 0->1
  - InterpreterDirective
  - String.prototype.replaceAll
  - String.prototype.codePoints
  - Distinguishing literal strings
- 1->2
  - Class Fields
  - Decorators
  - Atomics.waitAsync
  - JSON superset
- 2->3
  - Array.prototype.flatMap/flatten
  - Numeric separators
psmarshall/string-replace-all-proposal
- https://github.com/psmarshall/string-replace-all-proposal
- g flag ではなく String.prototype.replaceAll() を入れようという提案
Meta: Expand CONTRIBUTING.md
- https://github.com/tc39/ecma262/pull/1031
- CONTRIBUTING の方法が更新された
Define sufficient in-the-field experience
- https://github.com/tc39/process-document/pull/15
- stage 4 になるための実装要件を明確にしたい人と、意図的に曖昧であるべきという議論
- stage 5 を設けるという話も出た(が消えた)

IETF 動向

IETF100
- 詳細は次回扱う
- https://www.ietf.org/meeting/100/index.html
- https://datatracker.ietf.org/meeting/100/agenda.html
RFC
- RFC 8291 - Message Encryption for Web Push
  - https://tools.ietf.org/html/rfc8291
- RFC 8292 - Voluntary Application Server Identification (VAPID) for Web Push
  - https://tools.ietf.org/html/rfc8292
IETF Last Call:
- The ORIGIN HTTP/2 Frame
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0278.html
WG Last Call:
- HTTP Random Access and Live Content
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0304.html
- Using Early Data in HTTP
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0322.html
  - 425 (not 418) のまま LC になりそう
Call for Adoption:
- Secondary Certificate Authentication in HTTP/2
  - https://tools.ietf.org/html/draft-bishop-httpbis-http2-additional-certs-05
- Bootstrapping WebSockets with HTTP/2
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0305.html
I-D Action:
- draft-ietf-httpbis-header-structure-02.txt
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0339.html
Draft:
- Defining Well-Known Uniform Resource Identifiers (URIs)
  - https://tools.ietf.org/html/draft-nottingham-rfc5785bis-00
  - RFC5875 の更新
  - HTTP 上の新プロトコルを示すために使うな、などの追記
- Relative JSON Pointers
  - https://tools.ietf.org/html/draft-handrews-relative-json-pointer-00
  - RFC6901 に JSON の値を root から示すクエリのようなものがある
  - それの相対パス版
- JSON Schema: A Media Type for Describing JSON Documents
  - https://tools.ietf.org/html/draft-handrews-json-schema-00
  - JSON Schema を JSON どうしの参照やクエリで定義する?
- JSON Schema Validation: A Vocabulary for Structural Validation of JSON
  - https://tools.ietf.org/html/draft-handrews-json-schema-validation-00
  - JSON Schema で JSON を Validate するためのボキャブラリと手法
Other
- [TLS] PR#1091: Changes to provide middlebox robustness
  - https://www.ietf.org/mail-archive/web/tls/current/msg24908.html
  - TLS1.3 がこのままじゃ Middle Box 通らなそう
  - TLS1.2 っぽく戻りそう
- Zstd compression on ART
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0272.html
  - Zstd は Applications and Real-Time Area (art) でやることで
- Expect-CT updates
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0220.html
- DRAFT: more details for HTTPtre
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2017OctDec/0341.html
- SRI and signatures
  - https://lists.w3.org/Archives/Public/public-webappsec/2017Nov/0023.html
  - signature-based-sri (公開鍵を使う SRI) の現状と今後を話したい、という話

周辺動向

Please build websites for the web, not just Google Chrome.
- https://thenextweb.com/dd/2017/11/28/please-build-websites-web-not-just-google-chrome/
- 古い iPhone で Airbnb がうまく使えない/表示されないことを問い合わせたユーザに
- 「Chrome に最適化してるから Chrome 使って」などと返答(iPhone をアップデートすべき)
- Groupon でも同様のことが
- Chrome 開発者から「そういう作り方はすべきで無い」というレスがつく
What's New in HAProxy 1.8
- https://www.haproxy.com/blog/whats-new-haproxy-1-8/
- HTTP/2 Protocol Support
- 他にも結構色々入ってる
「WebAudio/MIDI 使ってサウンドデザインがいい感じのサイト知ってる?」スレッド
- https://twitter.com/Rumyra/status/927878437771018241
- 面白いサイトが集まってる
Testing standards - Anne's Blog
- https://annevankesteren.nl/2017/11/testing-standards
- Web を作る上でもテストは大事だという話 (WPT/TC39)
Monthly Web Development Update 11/2017: Browser News, KRACK and Vary Header Chaching
- https://www.smashingmagazine.com/2017/11/monthly-web-development-update-11-2017/
ESM についてのスレッド
- Yehuda Katz on Twitter: "I'm ready to call it: ES2015 modules are way more useful as an authoring format than as a browser runtime feature. Expect tools that "stati...
- https://twitter.com/wycats/status/931705425728172032
The Cost Of JavaScript
- https://medium.com/dev-channel/the-cost-of-javascript-84009f51e99e
- tl;dr: less code = less parse/compile + less transfer + less to decompress
- JS の転送/パース/実行、各フェーズでの実行時間の計測や最適化のための手法の解説
- 同じサイズなら JPEG よりも JS の方が実行に時間がかかるなど
HTML Web Component using Vanilla JavaScript
- https://ayushgp.github.io/html-web-components-using-vanilla-js/
- Vanilla JS で WebComponent
120fps and no jank
- https://dassur.ma/things/120fps/
- Jank を無くして 120fps を目指す話
Keystroke creeps, Uber's leaks & FCC speaks
- https://mailchi.mp/webfoundation/keystroke-creeps-ubers-leaks-fcc-speaks-the-web-this-week
An AMP Paywall and Subscription Model for All Publishers
- https://amphtml.wordpress.com/2017/11/28/an-amp-paywall-and-subscription-model-for-all-publishers/
- AMP でマネタイズの話(LaterPay のブログ記事の転載)
- amp-access-laterpay で LaterPay 経由で課金を実装できる話

イベント

11 月
- 11/6-10 TPAC 2017 San Francisco
  - see: WHATWG/W3C section
- 11/11-17 IETF 100 Singapore
  - see: IETF section
12 月
- 12/5-7 W3C Workshop on WebVR Authoring: Opportunities and Challenges
  - https://www.w3.org/blog/news/archives/6535
- 12/14 WebAssembly AMA
  - http://pages.catchpoint.com/webassembly-ama.html
2018
- WebPlatform Web Components F2F 2018
  - https://github.com/w3c/webcomponents/issues/713