ep76 Monthly Web 202011

published_at: 2020-12-05
guest: @myakura
toc: headings

Theme
Show Note

Chrome 動向
Firefox 動向
Safari 動向
Edge 動向
WHATWG/W3C 動向
TC39 動向
IETF 動向
セキュリティ動向
周辺動向
イベント
Wrap Up

Theme

第 76 回のテーマは 2020 年 11 月の Monthly Web です。

Show Note

Chrome 動向

Stable: 87
Updates
- Chromium Blog: Chrome 88: Digital Goods, Lighting Estimation in Augmented Reality, and More
  - https://blog.chromium.org/2020/12/chrome-88-digital-goods-lighting.html
  - Digital Goods API
  - Origin Trials
    - New Origin Trials
      - WebXR: AR Lighting Estimation
    - Completed Origin Trials
      - PointerLock unadjustedMovement
  - Other features in this release
    - Anchor target=_blank implies rel=noopener by Default
    - Dark Mode Form Controls and Scrollbars
    - AbortSignal in addEventListener()
    - CSS aspect-ratio Property
    - CSS Selectors 4: Complex :not()
    - Don't Clear adoptedStyleSheets on Adoption to/from <template>
    - ElementInternals.shadowRoot Attribute
    - Make Type Optional in WakeLock.request()
    - Origin Isolation
    - path() Support in clip-path CSS Property
    - Permissions-Policy Header
    - RTCRtpTransceiver.stop()
    - JavaScript
      - Shared Array Buffers, Atomics, and Futex APIs
  - Deprecations, and Removals
    - Don't Allow Popups During Page Unload (Enterprises)
    - FTP Support Removed
    - Web Components v0 Removed
- What's New In DevTools (Chrome 88)
  - https://developers.google.com/web/updates/2020/11/devtools
  - Faster DevTools startup
  - New CSS angle visualization tools
  - Emulate unsupported image types
  - Simulate storage quota size in the Storage pane
  - New Web Vitals lane in the Performance panel recordings
  - Report CORS errors in the Network panel
  - Frame details view updates
    - Cross-origin isolation information in the Frame details view
    - New Web Workers information in the Frame details view
    - Display opener frame details for opened windows
  - Open Network panel from the Service Workers pane
  - New copy options in the Network panel
    - Copy property value
    - Copy stacktrace for network initiator
  - Wasm debugging updates
    - Preview Wasm variable value on mouseover
    - Evaluate Wasm variable in the Console
  - Consistent units of measurement for file/memory sizes
  - Highlight pseudo elements in the Elements panel
  - Experimental features
    - CSS Flexbox debugging tools
    - Customize chords keyboard shortcuts
- Puppetaria: accessibility-first Puppeteer scripts
  - https://developers.google.com/web/updates/2020/11/puppetaria
  - CSS Selector ではなく a11y tree のクエリでテストを記述する
  - DOM 構造への依存を減らせるのでメンテナンスコストが下がる
- New in Chrome 87
  - https://developers.google.com/web/updates/2020/11/nic87
  - Chrome Dev Summit
  - Camera pan, tilt, zoom
  - Range requests and service workers
  - Origin Trial: Font access API
- Simulating color vision deficiencies in the Blink Renderer
  - https://developers.google.com/web/updates/2020/11/cvd
  - 色覚障害のシミュレーションや、コントラスト不足などを検証する方法
- Chromium Blog: Tab throttling and more performance improvements in Chrome M87
  - https://blog.chromium.org/2020/11/tab-throttling-and-more-performance.html
  - Occlusion Tracking で使用中タブを認識しリソースの配分を最適化
  - Back/forward cache
- Google ウェブマスターから Google 検索セントラルへ
  - https://developers.google.com/search/blog/2020/11/goodbye-google-webmasters
  - WebMaster から Search Central へリブランド
- Google 検索へのページエクスペリエンスの導入時期
  - https://developers.google.com/search/blog/2020/11/timing-for-page-experience?hl=ja
  - 2021/5 から Page Experience を Ranking に反映するという発表
  - AMP じゃなくてもモバイルのトップニュースの表示候補になるように
  - CWV/Mobile Friendly/Safe Browsing/HTTPS/No Intrusive Interstitials などが加味される
- Disable mouse acceleration to provide a better FPS gaming experience
  - https://web.dev/disable-mouse-acceleration/
  - マウスのアクセラレーションを無効にする?
- Using the Event Conversion Measurement API
  - https://web.dev/using-conversion-measurement/
  - Privacy Sandbox family の 1 つ
  - Click でのコンバージョンを送る API
- Building a Stories component
  - https://web.dev/building-a-stories-component/
  - Instagram の Story みたいな表現を CSS で行う解説
  - Grid/scroll-snap-align/scroll-snap-stop などを組み合わせる
- Schemeful Same-Site
  - https://web.dev/schemeful-samesite/
  - SameSite はこれまで Schemeless だった
  - Schemefull がデフォルトになり https:// と http:// は Cross Site になる
- Browser-level lazy-loading for CMSs
  - https://web.dev/browser-level-lazy-loading-for-cmss/
  - loading lazy を CMS につける場合の考慮事項まとめ
- Better JS scheduling with isInputPending()
  - https://web.dev/isinputpending/
  - isInputPending を用いたユーザ操作をブロックしないタスクの書き方
- Back/forward cache
  - https://web.dev/bfcache/
  - Safari/FF にはあった戻る時のキャッシュヒットを Chrome に入れていく話
  - CrossSite は Finch release 済み
  - SameSite への OT を実施中
  - pageshow/pagehide の扱い、no-store でのオプトアウトなど
- BlinkOn13 Youtube Playlist
  - https://www.youtube.com/playlist?list=PL9ioqAuyl6UJ_1hPrSWD1LpaIAeF9aaJi
  - 動画の前半がセッション、後半は QA な録画
  - History of the Web
    - https://www.youtube.com/watch?v=__V7J2NgKZI
    - Igaria / Google の 3 人によるセッション
    - スライドなし、昔話
  - BFCache
    - https://www.youtube.com/watch?v=lzWQTN7E0HA
  - Origin Trials
    - https://www.youtube.com/watch?v=C1x44KZJLQI
  - Instant & Seamless
    - https://www.youtube.com/watch?v=aSSFEfAq3oY
  - WebBundles - JS delivery without the tradeoffs
    - https://www.youtube.com/watch?v=i68zS3iG7xw
  - The Intent of Intents - Chromium and Standards
    - https://www.youtube.com/watch?v=hgEyQsy1D7w
    - Intents の仕組みがどう回ってるのかの話
- Schedule: Chromium University 2020
  - https://docs.google.com/document/d/e/2PACX-1vRcPxu7DPsFNZHGDaeaM00meaHybMsEUrsCZOhYJIO-umT3Ouh-uDYQtWnhiQRxYR15HKqabbWQyh-0/pub
  - 2019 年まで Chrome University だったものが Chromium University に
Intents
- Ship: Origin Isolation
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/WW4fGjvroWI
- Ship: XRWebGLBinding interface
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/6J0yfRuMmSU
- Ship: Change click, auxclick and contextmenu event types to PointerEvent
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/bta50W_Hg24
- Ship: Schemeful Same-Site
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/aiXFdnA5tsk
  - SameSite Cookie が SchemeLess だったのを SchemeFul に変える
  - http:// と https:// が Cross Site になるので安全性向上
  - M88 から Finch して影響を調査
- Ship: Restrict "private network requests" for subresources to secure contexts.
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/cPiRNjFoCag
  - CORS-RFC1918 の第一歩
  - public な攻撃サイトからの subresorce request で local/private に攻撃できる場合がある
  - とりあえず public -> private へのリクエストは https を必須にすることで緩和
- Ship: Same-site back-forward cache on Android
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/XS9VnYQoaQE
  - BFCache は Cross Site でのみ提供済みだったが Same Site でも Ship していきたい
- Ship: Restriction on SharedArrayBuffers (SABs)
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/1NKvbIj3dq4
  - Android Chrome と FF に ship された SiteIsolation 環境での SAB 最有効化
  - あれを Desktop Chrome でもやる M91 ねらい
- Ship: CSS ::target-text pseudo-element
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/yN2lrq67a1c
  - scroll to text で遷移する先を取る疑似要素
- Ship: Relative indexing method for Array, String, and TypedArrays
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/I8S78w7aFmE/m/qLHAcjhRCQAJ
  - String, Array, TypedArray の引数で index を指定する at()
  - 負の数だと後ろから
- Ship: Add support for CSS properties "overflow: clip" and "overflow-clip-margin"
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/xGofL-IMAb4/m/t03fbbg3CQAJ
- Ship: 'display: list-item' by default for <summary>
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/ihZFdCHuiTA/m/e1SEN6IQCQAJ
  - summary の開閉の三角を別のものに書き換えるとき ::-webkit-details-marker の ::before content 経由だった
  - list-item になり list-style-type でコンテントを、::marker でスタイルを定義できるように
- Ship: 'disclosure-open' and 'disclosure-closed' keywords for CSS list-style-type property
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/Czc_36BS2dA/m/_yHDeFwQCQAJ
  - list-style-type に disclosure-open/closed を追加(<summary> の開閉の三角)
- Ship: WebHID (Human Interface Device)
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/rL1csFYD1Ms/m/3qgPuZACCQAJ
- Ship: Potentially trustworthy data: urls
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/Hb1-VLwq54Y/m/TYsK4EzlCAAJ
  - data: urls は仕様上 potentially trustworthy となっている'
  - それを chrome の他のケースにも一般化する?
- Ship: display_override
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/MZgYJgS4Lcs
  - webmanifest の display に fallback が書ける
- Ship: Cross-origin opener policy reporting API
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/0fvyrO1-p_o
  - COOP に Reporting
- Implement and Ship: Block HTTP ports 5060 and 5061
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/tTGznHWRB9U
- Implement and Ship: AbstractRange superclass
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/h9AyVUx7M7M/m/NUrQd9DRBwAJ
  - StaticRange と Range に共通メソッドがあるので AbstractRange を抽出
- Implement and Ship: Limit characters allowed in extensions in File System Access API file pickers
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/bFUbINgQNgk
- Prototype: AbortSignal in addEventListener
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/9396JedBBOM
  - signal でキャンセルすると listener が削除される
- Prototype: MediaStreamTrack Insertable Streams (a.k.a. Breakout Box)
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/gkBkLvGKuzc
- Prototype: Screen Fold API
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/prHGPxF62i4
  - 折りたたみデバイスなどに向けて、たたみ方のタイプや角度を取得できるようにする API
- Prototype: Media Source Extensions for WebCodecs
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/bejy1nmoWmU
  - WebCodecs を用いて MSE をもっと効率よくできるようにする提案
- Prototype: Handwriting Recognition API
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/VXUq1UY4m7Y
  - 手書き認識の API
  - OS の IME では対応があるのに Web にはないというギャップを埋めたいらしい
- Prototype: display-capture feature policy
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/gBpWuawy-Ms
  - getDisplayMedia に対する feature policy
  - もう permission policy じゃね? -> つっこみ入ってた
- Prototype: Read Chrome device attributes
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/oYRwgx8SwTA
- Prototype: Managed configuration for Web Applications
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/LZ3FHzUOLQk
- Prototype: Shared Element Transitions
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/7SMI3IklO4g
  - MPA で SPA みたいなシームレスな画面遷移ができるようにする
  - DEMO: https://www.youtube.com/watch?v=yDFyLEN6aKk
- Extend Origin Trial: WebAssembly SIMD
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/bw_RgyH4Xss
- Extend Experiment: Beforematch event and hidden-matchable
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/a76WF3Dfl3E
  - content-visibility: hidden-matchable すると非表示だが検索ができる
  - Beforematch event はそのページ内検索や scoll to text したときに発火するイベント
  - DEMO: https://github.com/WICG/display-locking/blob/master/explainers/images/beforematch.gif
- Extend Origin Trial: WebCodecs
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/3MNyU3OAacI
- Extend Origin Trial: Web Components v0 Deprecation
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/ZQJ0k1IpQSo/m/KE467oUICQAJ
- Extend Origin Trial: Secure payment confirmation
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/9cgsOW3XNw4/m/bBgGYUwACQAJ
  - Credential Management API に PaymentCredential を追加して決済の UX を改善
- Extend Origin Trial: adaptivePtime property for RTCRtpEncodingParameters
  - https://groups.google.com/a/chromium.org/g/blink-dev/c/T1ad0wJQ9qQ
Change:
Unship:
Remove: HTTP/2 and gQUIC server push
- https://groups.google.com/a/chromium.org/g/blink-dev/c/K3rYLvmQUBY
PSA: TAG Reviews Are Required
- https://groups.google.com/a/chromium.org/g/blink-dev/c/naqmDmy1iM8/m/czBpBRFYAQAJ
v8
Other
- Feedback wanted: CORS for private networks (RFC1918)
  - https://web.dev/cors-rfc1918-feedback/
- Q3 Summary from Chrome Security
  - https://groups.google.com/a/chromium.org/g/security-dev/c/oBj6NlMnWKw
- Announcing the Chrome Root Program
  - https://groups.google.com/g/mozilla.dev.security.policy/c/3Q36J4flnQs
  - https://www.chromium.org/Home/chromium-security/root-ca-policy
  - Chrome も Firefox みたいに証明書ストアを自分で持つようになるらしい

Firefox 動向

Stable: 83.0
Updates
- Warp: Improved JS performance in Firefox 83
  - https://hacks.mozilla.org/2020/11/warp-improved-js-performance-in-firefox-83/
- These Weeks in Firefox: Issue 83
  - https://blog.nightly.mozilla.org/2020/11/19/these-weeks-in-firefox-issue-83/
- Measuring Middlebox Interference with DNS Records - Mozilla Security Blog
  - https://blog.mozilla.org/security/2020/11/17/measuring-middlebox-interference-with-dns-records/
  - DNS のパフォーマンスへの影響を Cloudflare と調査
- Firefox 83 introduces HTTPS-Only Mode
  - https://blog.mozilla.org/security/2020/11/17/firefox-83-introduces-https-only-mode/
  - HTTPS でしか接続せず、HTTP で接続しようとすると許可を求めるモードの導入
- Foundations for the Future - Mozilla Hacks - the Web developer blog
  - https://hacks.mozilla.org/2020/11/foundations-for-the-future/
  - Servo が Linux Foundation に移管されたことを受けての今後の話
- Firefox 83 is upon us
  - https://hacks.mozilla.org/2020/11/firefox-83-is-upon-us/
  - Conic gradients
  - WebRender comes to more platforms
    - ページを 60fps で表示する WebRender のトライアル開始
  - Pinch to zoom on desktop
Intents
- Ship: :focus-visible pseudo-class
  - https://groups.google.com/g/mozilla.dev.platform/c/yA2rL_2keTE
- Ship: CSS overflow:clip
  - https://groups.google.com/g/mozilla.dev.platform/c/7oQm8PC0aU0
  - -moz-hidden-unscrollable の標準バージョン
- Ship: PerformancePaintTiming API
  - https://groups.google.com/g/mozilla.dev.platform/c/qPB1OLaQWsw
  - First Contentful Paint
- Implement and ship: CSS property touch-action:pinch-zoom
  - https://groups.google.com/g/mozilla.dev.platform/c/DYc-4vO0D5Q/m/VJHGCUFhAQAJ
- Prototype and ship: signal property on AddEventListenerOptions
  - https://groups.google.com/g/mozilla.dev.platform/c/KdR8-eJplCs/m/a0pVUNiTBAAJ
  - AbortSignal を渡すための signal property
- Unship: Large-Allocation header
  - https://groups.google.com/g/mozilla.dev.platform/c/9GZosW8PN6w/m/LhbpVe3DAwAJ
- Removal of NPAPI plugin support in Firefox 85
  - https://groups.google.com/g/mozilla.dev.platform/c/NsdReYslBU4/m/b9FwjVAbBAAJ
- Accessibility review process
  - https://groups.google.com/g/mozilla.dev.platform/c/6W6vxvVivLk
- Enabled CRLite in Nightly
  - https://groups.google.com/g/mozilla.dev.platform/c/mbYKUEGE5oQ/m/JsSBV-RRAAAJ
- HTTP/3 ready for testing
  - https://groups.google.com/g/mozilla.dev.platform/c/6CZs8Jartu0
Other
- Firefox Security Newsletter - Q3 2020
  - https://groups.google.com/g/mozilla.dev.platform/c/k_jNJXOMXYw
- Design of the CRLite Infrastructure - Mozilla Security Blog
  - https://blog.mozilla.org/security/2020/12/01/crlite-part-4-infrastructure-design/
  - CRLite をどういうインフラで提供しているか
- Fission Newsletter #9
  - https://groups.google.com/g/mozilla.dev.platform/c/F-68NBe2K_8
- Preloading Intermediate CA Certificates into Firefox
  - https://blog.mozilla.org/security/2020/11/13/preloading-intermediate-ca-certificates-into-firefox/
- Igalia joins MDN Product Advisory Board | Igalia
  - https://www.igalia.com/2020/12/02/Igalia-joins-MDN-Product-Advisory-Board.html
  - Igalia (Daniel Ehrenberg) が MDN の PAB に参加

Safari 動向

Stable: 14.0.1
Updates
- New WebKit Features in Safari 14
  - https://webkit.org/blog/11340/new-webkit-features-in-safari-14/
  - Webpage Translation
    - ただし日本語は対象外?
    - translate(="yes") or translate="no"
  - Performance Improvements
    - Loading a previously unvisited page is 13% faster
    - loading recently visited pages is 42-52% faster.
    - Tab closing performance improved from 3.5 seconds to 50 milliseconds.
    - support for incrementally loading PDF files and now renders the first page up to 60 x faster.
  - Improved Compatibility
    - Service Workers, SVG, CSS, XHR+Fetch などで 14 万個のテストに追加でパス
  - Privacy Updates
    - ITP 更新
    - CNAME Cloaking block
  - Touch ID and Face ID for the Web
  - WebP Support
  - Reserving Layout Space for Images
    - width/height でアスペクト比割り出し領域予約
  - New CSS Features
    - 画像の向きが EXIF ベースになり、image-orientation で上書き
    - is:(), :matches(), :where()
    - line-break: anywhere
  - Media Enhancements
    - dynamic-range: high
  - JavaScript Improvements
    - BigInt
    - optional chaining
  - Web Inspector Updates
- Release Notes for Safari Technology Preview 116
  - https://webkit.org/blog/11348/release-notes-for-safari-technology-preview-116/
  - Enabled AudioWorklet API by default (r268459)
  - Added implementation for AudioWorkletGlobalScope.registerProcessor() (r268103)
  - Added implementation for AudioWorkletGlobalScope's currentFrame, currentTime, and sampleRate attributes (r268076)
  - Enabled video capture by default on macOS (r268052)
  - Added support for MediaRecorder bitrate getters (r268363)
  - Added support for MediaRecorder pause and resume (r268130)
  - Added support for respecting enabled and muted tracks (r267987)
  - Added support for BlobEvent.timecode (r268136)
  - Added support for the individual transform properties translate, rotate, scale, including accelerated animation (r267985, r268627)
  - Added painting CSS highlights over images (r268487)
  - Improved the essential internal methods for %TypedArray% to adhere to spec (r268640)
  - Improved computation of default audio input and output devices (r268396)
  - Implemented Blob.stream (r268228)
  - Improved xhr.response conformance to the specification (r267959)
  - Aligned URL setters to reasonable behaviors of other browsers (r268050)
  - Fixed UTF-8 encoding in URL parsing (r267963)
  - Enabled per-page storage access scope (r267973)
- MediaRecorder API
  - https://webkit.org/blog/11353/mediarecorder-api/
- CNAME Cloaking and Bounce Tracking Defense
  - https://webkit.org/blog/11338/cname-cloaking-and-bounce-tracking-defense/
Request for Position
- Element Timing
  - https://lists.webkit.org/pipermail/webkit-dev/2020-November/031579.html
- changing click, auxclick, contextmenu to PointerEvent
  - https://lists.webkit.org/pipermail/webkit-dev/2020-November/031588.html
- Readable Byte Streams
  - https://lists.webkit.org/pipermail/webkit-dev/2020-November/031597.html
- Schemeful Same-Site
  - https://lists.webkit.org/pipermail/webkit-dev/2020-November/031618.html
- relative indexing method on JS indexables
  - https://lists.webkit.org/pipermail/webkit-dev/2020-November/031622.html
Other

Edge 動向

Stable: 87
Updates
Chakra
- Release ChakraCore v1.11.23 - microsoft/ChakraCore
  - https://github.com/microsoft/ChakraCore/releases/tag/v1.11.23
Other
- How Microsoft Edge and other applications manage memory
  - https://blogs.windows.com/msedgedev/2020/11/11/how-microsoft-edge-and-other-applications-manage-memory/
- Introducing Shopping with Microsoft Edge - Microsoft Tech Community
  - https://techcommunity.microsoft.com/t5/articles/introducing-shopping-with-microsoft-edge/m-p/1870080
- Announcing General Availability of Microsoft Edge WebView2 for .NET and Fixed Version distribution mode - Microsoft Edge Blog
  - https://blogs.windows.com/msedgedev/2020/11/20/announcing-general-availability-of-microsoft-edge-webview2-for-net-and-fixed-version-distribution-mode/
- Improving notifications and badging in Microsoft Edge - Microsoft Edge Blog
  - https://blogs.windows.com/msedgedev/2020/11/16/improving-notifications-badging-microsoft-edge/
  - Edge ってブラウザ閉じてる時の push notification 無かったらしい
  - これを戻した
- Improvements to history in Microsoft Edge - Microsoft Tech Community
  - https://techcommunity.microsoft.com/t5/articles/improvements-to-history-in-microsoft-edge/m-p/1896552#M3896
  - 履歴と表示タブをブラウザで共有する話
- Outlook REST API beta and Outlook REST API v2.0 Deprecation Notice - Microsoft Tech Community
  - https://techcommunity.microsoft.com/t5/exchange-team-blog/outlook-rest-api-beta-and-outlook-rest-api-v2-0-deprecation/ba-p/1898162

WHATWG/W3C 動向

Recommendation
Proposed Recommendation
Candidate Recommendation
Working Draft
- Updated Candidate Recommendation: Payment Request API
  - https://www.w3.org/blog/news/archives/8779
First Public Working Draft
- First Public Working Draft: WebXR Layers API Level 1
  - https://www.w3.org/blog/news/archives/8775
Chartering
- Consent Community Group created
  - https://lists.w3.org/Archives/Public/public-new-work/2020Nov/0005.html
- https://www.w3.org/blog/news
Other
- Web Platform Design Principles
  - https://www.w3.org/TR/2020/NOTE-design-principles-20201110/
  - Web に新しい機能を追加する際に検討すること
  - TAG review での経験をもとに文書化
- Remove AppCache · whatwg/html@e4330d5
  - https://github.com/whatwg/html/commit/e4330d510a1d05e1f5f84707c9d6dcec97db94b8
  - HTML 仕様から AppCache が削除

TC39 動向

Meeting 2020-011
- agendas
  - https://github.com/tc39/agendas/blob/master/2020/11.md
- minutes (まだない)
  - https://github.com/tc39/notes/tree/master/meetings/2020-11
Proposals Diff
- https://github.com/tc39/proposals/compare/master@{2020-11-01}...master@{2020-12-01}
- https://tc39.github.io/beta/
- 0->1
  - Module Blocks
  - Extensions
- 1->2
  - Error Cause
- 2->3
  - .item() to .at()
- 3->4
New Proposals
- Module Blocks
  - https://github.com/tc39/proposal-js-module-blocks
  - module をインラインで定義できる構文
  - worker のコードなどを別ファイルで読み込まなくて良い
- Extensions
  - https://github.com/hax/proposal-extensions
  - Bind Operator をさらに更新してモジュールとして拡張を自作できるようにする
- eraDisplay option for Intl.DateTimeFormat
- Intl.bestAvailableLocale
- Extend TimeZoneName Option Proposal
Other
- 2021 の meeting
  - 8 回を予定
  - 半分は物理で計画
  - 7 月は Tokyo (4 days) -> のちに remote に変更(たぶん Olympic)
- TC39 も MDN に協力してこう
  - MDN staffing to document TC39's work

IETF 動向

IETF
- materials
  - https://datatracker.ietf.org/meeting/
- httpwg
  - no meeting
- quicwg
  - https://github.com/quicwg/wg-materials/blob/master/ietf109/minutes.md
- webtrans
  - https://datatracker.ietf.org/meeting/109/materials/minutes-109-webtrans-00
- tlswg
  - https://datatracker.ietf.org/meeting/109/materials/minutes-109-tls-00
- dispatch
  - https://datatracker.ietf.org/meeting/109/materials/minutes-109-dispatch-00
RFC
IETF Last Call
WG Last Call
Call for Adoption
- Call for Adoption: HTTP/2 Bis
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2020OctDec/0197.html
  - HTTP2 の更新作業をやっていく
- On RFC7725bis
  - https://lists.w3.org/Archives/Public/ietf-http-wg/2020OctDec/0195.html
  - 451 Unavailable For Legal Reasons 更新については interest が少なくてやらない
I-D Action
Draft
- The CDN-Cache-Control HTTP Response Header Field
  - https://tools.ietf.org/html/draft-cdn-control-header-00
  - CDN にのみ向けた Cache-Control となるヘッダ
  - Fastly でいう Surrogate-Control の標準化
- JWS Clear Text JSON Signature Option (JWS/CT)
  - https://tools.ietf.org/html/draft-jordan-jws-ct-00
- The Idempotency HTTP Header Field
  - https://tools.ietf.org/html/draft-idempotency-header-01
  - 冪等性の無い POST をリトライできるように id をつけるためのヘッダ
Other

セキュリティ動向

Standing on Our Own Two Feet - Let's Encrypt - Free SSL/TLS Certificates
- https://letsencrypt.org/2020/11/06/own-two-feet.html

周辺動向

Cloudflare
- SAD DNS Explained
  - https://blog.cloudflare.com/sad-dns-explained/
- Automated Origin CA for Kubernetes
  - https://blog.cloudflare.com/automated-origin-ca-for-kubernetes/
- Announcing Spectrum DDoS Analytics and DDoS Insights & Trends
  - https://blog.cloudflare.com/announcing-spectrum-ddos-analytics-and-ddos-insights-trends/
- The Internet is Getting Safer: Fall 2020 RPKI Update
  - https://blog.cloudflare.com/rpki-2020-fall-update/
Improving Performance and Search Rankings with Cloudflare for Fun and Profit
- https://blog.cloudflare.com/improving-performance-and-search-rankings-with-cloudflare-for-fun-and-profit/
- Google が search rank に perf を入れるアナウンスをした ->
- cloudflare 入れると perf が上がる ->
- cloudflare 入れると rank が上がる
- Brotli compression using a reduced dictionary
Brotli compression using a reduced dictionary
- https://blog.cloudflare.com/brotli-compression-using-a-reduced-dictionary/
The State of CSS 2020
- https://2020.stateofcss.com/
Advent Calendar
- PWAdvent
  - https://pwadvent.dev/
- Web Performance Calendar >> 2020
  - https://calendar.perfplanet.com/2020/
  - https://calendar.perfplanet.com/contribute/

イベント

12 月
- 9-10: Chrome Dev Summit
  - https://developer.chrome.com/devsummit/
1 月
2 月

Wrap Up

M88
- Digital Goods API
- noopener by default
- AbortController for addEventListener
- Origin Isolation
Devtools に機能がいっぱい
Puppetaria でテストをセマンティックに
Page Experience をランクに反映を 2020/5 に
Schemfull Samesite
BlinkOn / Chromium University
<summary> の CSS 改善
H2Push 削除
Root Program Announce
Mozilla
- HTTPS Only Mode
- CRLite
MDN PAB に Igalia 加入
macOS 14 Big Sur + Safari 14
- translate / extension / webp
- ITP / CNAME Cloaking / Bounce Tracking
AppCache HTML から削除
TC39 Module Blocks
IETF CDN-Cache-Control Header / POST Idempotent Header
The State of CSS 2020