ep69 Monthly Web 202006

published_at: 2020-07-06
guest: @araya
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 69 回のテーマは 2020 年 6 月の Monthly Web です。

Show Note

Chrome 動向

Stable: 83
Updates
- What's New In DevTools (Chrome 85)
  - https://developers.google.com/web/updates/2020/06/devtools
  - Style editing for CSS-in-JS frameworks
  - Lighthouse 6 in the Lighthouse panel
  - First Meaningful Paint (FMP) deprecation
  - Optional Chaining
  - Private Fields
  - Nullish coalescing
  - New app shortcut warnings in the Manifest pane
  - Service worker respondWith events in the Timing tab
  - Consistent display of the Computed pane
  - Bytecode offsets for WebAssembly files
  - Line-wise copy and cut in Sources Panel
  - Ungroup same console messages
  - Persisting Selected context only settings
  - JavaScript compilation cache information in Performance panel
  - Navigation timing alignment in the Performance panel
  - New icons for breakpoints, conditional breakpoints, and logpoints
- Experimenting with QuicTransport
  - https://web.dev/quictransport/
- Protect your resources from web attacks with Fetch Metadata
  - https://web.dev/fetch-metadata/
- How to file a good browser bug
  - https://web.dev/how-to-file-a-good-bug/
- Boldly link where no one has linked before: Text Fragments
  - https://web.dev/text-fragments/
- Using the CrUX Dashboard on Data Studio
  - https://web.dev/chrome-ux-report-data-studio-dashboard/
- Getting started with Chrome's origin trials
  - https://web.dev/origin-trials/
- Using the Chrome UX Report API
  - https://web.dev/chrome-ux-report-api/
  - CrUX に REST API が
- Web developer tools for debugging JavaScript issues in Google Search
  - https://web.dev/google-search-tools/
- Milliseconds make millions
  - https://web.dev/milliseconds-make-millions/
- Accessibility tips for web developers
  - https://web.dev/a11y-tips-for-web-dev/
- Notification Triggers
  - https://web.dev/notification-triggers/
- Verify phone numbers on the web with the Web OTP API
  - https://web.dev/web-otp/
- Know your code health with the ReportingObserver API
  - https://web.dev/reporting-observer/
- The Native File System API: Simplifying access to local files
  - https://web.dev/native-file-system/
- A contact picker for the web
  - https://web.dev/contact-picker/
- Image support for the async clipboard API
  - https://web.dev/image-support-for-async-clipboard/
- Resilient search experiences
  - https://web.dev/resilient-search-experiences/
- Instant navigation experiences
  - https://web.dev/instant-navigation-experiences/
- App shell UX with service workers and streams
  - https://web.dev/app-shell-ux-with-service-workers/
- Progressively enhance your Progressive Web App
  - https://web.dev/progressively-enhance-your-pwa/
- Choose the best build tool for your project with tooling.report
  - https://web.dev/introducing-tooling-report/
- Sign-in form best practices
  - https://web.dev/sign-in-form-best-practices/
- Improving user privacy and developer experience with User-Agent Client Hints
  - https://web.dev/user-agent-client-hints/
Intents
- Ship: CSS content-visibility property
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/uElH0-Ys8Cs/bJXV-Ky5BAAJ
  - 隠れている要素の処理を無くし高速化できる
- Ship: Named pages with page-orientation
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/lExIv0Fh8fs/APsgi1auAQAJ
  - @page foobar { height: 10rem; } .foobar{ page: foobar; } のように page property の値に指定する alias のようなものを作れる
- Ship: JavaScript BigInt to WebAssembly i64 integration
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/g4QKRUQV1-0/jdWjD1uZAAAJ
- Ship: WebXR Anchors
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/Ay1bG_e9m00/kpJVUINhBQAJ
- Ship: Non-Blocking Overscroll
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/MKshWSE9BzM/4LrO5VjiAgAJ
  - TouchMove イベントはのタッチストリームは一度非ブロッキングになるとキャンセルできない
  - Chromium はページの最上/下部に達したときにタッチストリームをブロッキングに戻す
  - これは無限スクロールで問題を起こすため、ブロッキングに戻らないように変更する
  - ページ内の Pull-to-Refresh などには CSS の overscroll-behavior を使う
- Ship: WebAssembly multi-value
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/K4-P5rq7FbY/qxxlkrjxAQAJ
- Ship: Web Bluetooth getDevices(), BluetoothDevice.watchAdvertisements(), and BluetoothAdvertisingEvent
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/lqCQ63CTKEQ/cYTNFETPAwAJ
- Ship: AVIF Decode
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/MlTJyKGGtks/rTfshC2SBAAJ
- Ship: Media Feeds
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/OXZLwImwdbc/ai77f5puBAAJ
  - ユーザに対して他のおすすめコンテンツを提供できる機能
  - ブラウザの UI で行うための宣言的な API
  - (どういう UI になるのか?)
- Implement and Ship: Update fallback content's behavior for ImageInputType and HTMLImageElement
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/xPWNM6g0mOs/asoj4aCkAQAJ
- Implement and Ship: CSS counter-set
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/LpHjBZZSPB0/QpafCJheBQAJ
  - CSS で連番を制御する API
  - counter-set, counter-increment, counter-reset
- Implement and Ship: Remove 'no-preference' from prefers-color-scheme @media feature
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/ragu5Is6vCw/bsrP_5O6BAAJ
- Implement and Ship: Intensive throttling of Javascript timer wake ups
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/8En_5DqV_fU/fKD_sQRiAwAJ
- Implement and Ship: HTMLMediaElement.preservesPitch
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/XVCt0EXVplQ/sDyHmylZAgAJ
  - 音声の速度を変えたとき、音が高くなるか、変わらないか、選べる API
  - 既にピッチを変えないように実装されているが DJ や音声効果など、変えられる方が良い場合もあるので入る
- Implement and Ship: Expose pictureInPictureWindow in leavepictureinpicture event
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/gwaEnJjtfKw/rEf_uw92AgAJ
- Prototype and Ship: Feature Policy integration for Clipboard API
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/IDAapW6w4to/iSH1MXRFCgAJ
- Prototype: cross-origin isolation
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/U51-KZ51vNY/gdA2ZYt6AQAJ
  - site ではなく origin で完全に分離する
- Prototype: CSS Overflow scrollbar-gutter
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/GErJ9WbxJrU/F8N2xl1kBgAJ
- Prototype: CSS color-mix function
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/uASqamKZILY/DYm_UuokBQAJ
- Prototype: display-override
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/WvIeZT8uSzw/al7sVZjVBAAJ
- Prototype: HTMLMediaElement.preservesPitch
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/bD4dZdquUZ8/cGYGla9UAgAJ
- Prototype: WebXR Raw Camera Access
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/4kMGCyCUIao/5vjPk4tuAQAJ
- Prototype and chromestatus feature entries
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/GnV0dxxOR2I/3nsJ-iV8AwAJ
  - chromestatus にエントリがないのに intents が送られているケースがある
  - 基本は chromestatus にエントリを作るのが最初で、そこから連携して送るようにという通達
- Prototype: WebXR Layers
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/vI9AhAzxlWE/zQOmT824AgAJ
- Prototype: Cross-origin opener policy reporting API
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/h5s3SMpF8QI/TkukMVyTAgAJ
- Prototype: Sanitizer API
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/MJxVZs1H5SY/6q0QxEFtBAAJ
  - 文字列から HTML 要素を除く API
  - DOMPurify を参考にしている
- Extend Origin Trial: WebRTC Insertable Streams
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/6BSEbB0Ut5U/1-Xb-badAQAJ
- Experiment: WebHID (Human Interface Device)
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/LoyzK8xTRME/yLR-K-siBQAJ
- Experiment: adaptivePtime property for RTCRtpEncodingParameters.
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/Mt9GmmF-Vwc/G4EhuBsdBQAJ
- Experiment | Extend Origin Trial: Deprecation Trial For Disallowing Sync XHR in Page Dismissal
  - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/Ubh0hXsM2_o/0aOCdlCaAQAJ
- Change:
- Unship:
- Remove:
  - Non-Blocking Overscroll
    - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/0T8QSqDpNJ4/S9D125fYAgAJ
  - PSA: a new fps meter
    - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/iHULoSyUxOQ/Tn2V2Ao_BAAJ
  - Can you spare an hour?
    - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/jH80TVOwza4/XmnpftvGBAAJ
v8
- V8 release v8.4 - V8
  - https://v8.dev/blog/v8-release-84
Other
- Chromium Blog: Improving Chromium's browser compatibility in 2020
  - https://blog.chromium.org/2020/06/improving-chromiums-browser.html
  - 2019 に Mozilla の実施した DNA(Developer Needs Assessment) の結果、最も求められているのは互換性だった
  - これを受け Chrome は Scroll/Flexbox/Form などで改善を行った
- Chromium Blog: Changes to quality criteria for PWAs using Trusted Web Activity
  - https://blog.chromium.org/2020/06/changes-to-quality-criteria-for-pwas.html
- Project Zero: FF Sandbox Escape (CVE-2020-12388)
  - https://googleprojectzero.blogspot.com/2020/06/ff-sandbox-escape-cve-2020-12388.html

Firefox 動向

Stable: 78
Updates
- New in Firefox 77: DevTool improvements and web platform updates
  - https://hacks.mozilla.org/2020/06/new-in-firefox-77-devtool-improvements-and-web-platform-updates/
  - DevTool Improvements
    - Faster, leaner JavaScript debugging
    - JavaScript & CSS Source Maps that just work
    - Step JavaScript in the selected stack frame
    - Overflow settings for Network and Debugger
    - Pause on property read & write
    - Improved Network data preview
  - Platform Updates
    - String#replaceAll
    - IndexedDB cursor requests
  - Extensions in Firefox 77: Fewer permission requests and more
- New in Firefox 78: DevTools improvements, new regex engine, and abundant web platform updates
  - https://hacks.mozilla.org/2020/06/new-in-firefox-78/
  - Developer tool improvements
    - Source-mapped variables, now also in Logpoints
    - Promises and frameworks error logs get more detailed
    - Monitoring failed request issues
    - Quality improvements
    - Early-access DevTools features in Developer Edition
  - Web platform updates
    - New CSS selectors :is and :where
    - Styling forms with CSS :read-only and :read-write
    - New regex engine
    - ECMAScript Intl API updates
    - ParentNode.replaceChildren
    - WebAssembly multi-value support
    - WebAssembly large integer support
  - WebExtensions
  - TLS 1.0 and 1.1 removal
  - Firefox 78 is an ESR release
- Welcoming Safari to the WebExtensions Community
  - https://hacks.mozilla.org/2020/06/welcoming-safari-to-the-webextensions-community/
  - WWDC での Safari の拡張対応のアナウンスを受けて
- Update on Firefox Support for macOS 10.9, 10.10 and 10.11
  - https://blog.mozilla.org/futurereleases/2020/06/23/update-on-firefox-support-for-macos-10-9-10-10-and-10-11/
- A New RegExp Engine in SpiderMonkey
  - https://hacks.mozilla.org/2020/06/a-new-regexp-engine-in-spidermonkey/
  - 正規表現エンジンの刷新
- Let's meet online: Virtual All Hands 2020
  - https://blog.mozilla.org/sumo/2020/07/01/lets-meet-online-virtual-all-hands-2020/
Intents
- Ship: Require user interaction for session history entries
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/HTt3bnwTiUE/Acysxp-NAwAJ
- Ship: JavaScript weak references
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/FhtlL0tmz5M/_hOl81QRAwAJ
- Ship: WebAssembly bulk-memory-operations and reference-types proposals
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/crebIMmTEWg/-Z93I6dxAwAJ
- Ship : HTML5 <dialog> element (Nightly Only)
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/gqi4MDQDwX8/eXCcIZNWAwAJ
  - Nightly でだけ <dialog> 要素を有効に
  - Layout 実装が仮なのと、 Inert(後述) が無いため、まだ改善が必要
- Ship: returning shared memory to the web
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/-hYWoob95LI/k160l4k7AwAJ
  - COOP + COEP による crossOriginIsolated が true なら SharedArrayBuffer を有効に
- Prototype: enterkeyhint attribute
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/T97NRJWS8Qs/YhTfpSS_AQAJ
  - モバイルのキーボードの Enter 部分を装飾する
- Prototype HTML:inert
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/DS9qGnqc_3Q/BbSSogcEAwAJ
  - 非活性にするオプション
  - dialog 表示時の後ろ側など
- Prototype: unprefixed appearance property
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/nlun5QV63Bo/xUXCmySGAgAJ
  - -moz-appearance の Prefix を削除
- Unship: JavaScript BinAST prototype implementation
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/B3sVl2hCJCE/KLoMRrXFAwAJ
  - 実装が一応入っていたが、完成には程遠いので、 CI 負荷などを下げるため一旦下ろす
  - 次やる場合は、新しい JS パーサのデザインに合わせてやりなおす
- Unship: prefers-color-scheme:no-preference value.
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/PxkHBfdorRo/a-fswdp0AwAJ
- Deprecate: stretching MathML operators with STIXGeneral fonts
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/ufT7Oc42MEc/xiOlQxIECQAJ
- More volunteers needed for nightly crash triage rotation
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/IwOsqYduKF4/CoHRMYnEAwAJ
  - クラッシュレポートのトリアージをする人が足りないのでボランティア募集
Other
- Compiler Compiler: A Twitch series about working on a JavaScript engine
  - https://hacks.mozilla.org/2020/06/compiler-compiler-working-on-a-javascript-engine/
- Introducing the MDN Web Docs Front-end developer learning pathway
  - https://hacks.mozilla.org/2020/06/introducing-the-mdn-web-docs-front-end-developer-learning-pathway/
- Securing Gamepad API - Mozilla Hacks - the Web developer blog
  - https://hacks.mozilla.org/2020/07/securing-gamepad-api/
- More details on Comcast as a Trusted Recursive Resolver
  - https://blog.mozilla.org/blog/2020/06/26/more-details-on-comcast-as-a-trusted-recursive-resolver/
- Firefox 79 Beta and Developer Edition shipped with a few changes
  - https://www.fxsitecompat.dev/en-CA/blog/2020/firefox-79-beta-and-developer-edition-shipped-with-a-few-changes/
- SpiderMonkey Newsletter 5 (Firefox 78-79) | spidermonkey.dev
  - https://mozilla-spidermonkey.github.io/blog/2020/07/03/newsletter-5.html
- SpiderMonkey Newsletter #5
  - https://groups.google.com/forum/#!msg/mozilla.dev.platform/eEAh6uE2M5E/dSsp0fa1AgAJ

Safari 動向

Stable: 13.1.1
Updates
- WWDC
  - WWDC20 - Apple Developer
    - https://developer.apple.com/wwdc20/
- Safari 14 Beta Release Notes
  - https://developer.apple.com/documentation/safari-release-notes/safari-14-beta-release-notes
  - WebExtension for macOS
  - Webpage Translation
  - Support for HTTP/3
  - Improved web platform tests pass rate
  - https://developer.apple.com/videos/play/wwdc2020/10663/
    - Performance improvements
      - Link clicking to unvisited page 13% faster
      - Link clicking to recently visited page 42% faster
      - Entering URL to recently visited page 52% faster
      - Instant back 34% more pages
      - First-page PDF render while downloading 60x faster
      - Closing unresponsive tabs 50ms
      - Scrolling CPU usage 3x less
      - IndexedDB operations Up to 10x faster
      - for-of loops Up to 5x faster
      - JavaScript Promises Up to 2x faster
      - JavaScript delete operations Up to 12x faster
    - WebP のサポート
    - HDR のサポート @media only screen (dynamic-range: high)
    - Picture-in-picture API
    - など
- Release Notes for Safari Technology Preview 108
  - https://webkit.org/blog/10840/release-notes-for-safari-technology-preview-108/
  - Implemented ParentNode.prototype.replaceChildren (r262381)
  - Added support for reading "image/png" on ClipboardItem (r262209)
- Release Notes for Safari Technology Preview 109 with Safari 14 Features
  - https://webkit.org/blog/10875/release-notes-for-safari-technology-preview-109-with-safari-14-features/
  - Safari Web Extension
    - https://developer.apple.com/videos/play/wwdc2020/10665/
    - Xcode で、署名、ビルドして AppStore で配布
    - Chrome/Firefox の extension から convert するツールも提供
  - Privacy Report
  - Improved tab management with tab previews
    - inactive なタブを hover するとページのプレビューが出るようになった
  - Website icons in tabs
    - タブに favicon が表示されるようになった
  - Password breach notifications
    - iCloud Keychain に保存されているパスワードの漏洩があったら通達する
    - well-known URL (.well-known/change-password)にユーザーをアクセスさせる
  - Domain-bound codes
    - https://wicg.github.io/sms-one-time-codes/
    - SMS で受け取ったワンタイムトークンのオートフィル
  - Web Authentication
    - https://developer.apple.com/videos/play/wwdc2020/10670/
    - WebAuthn に Face ID/Touch ID を使用できる
    - FIDO2 外部キーのサポート
  - Adobe Flash no longer support in Safari
  - Web API
    - Changed the file picker of the <input> file element to show the selection filter (r262895)
    - Changed to disallow XHR+Fetch responses when a response contains invalid header values (r262511)
    - Changed image referrerpolicy mutations to be considered "relevant mutations" (r263167)
    - Fixed empty dataTransfer.types when handling the dragstart event (r262507)
    - Fixed a case of being unable to select an item from dropdown (r263179)
    - Made ReadableStream robust against user code (r263141)
  - CSS
    - Fixed align-content to apply for a single line (r262716)
    - Fixed pseudo-elements (::after) in shadow roots to animate (r262711)
    - Fixed CSS custom properties for specific border properties (r262627)
  - Web Animations
    - Fixed animating font-size values with em units (r262946)
  - SVG
    - Fixed Document.currentScript to work for SVGScriptElements (r262945)
    - Fixed multiple SVG filters unexpectedly lightening the image using linearRGB (r262893)
  - IndexedDB
    - Added support for IDBFactory databases method (r263157)
  - Scrolling
    - Fixed horizontally scrolling elements that are broken when revealed by toggling visibility (r262774)
  - Layout
    - Changed to not apply the special anchor handling when the anchor content is visible after clamping (r262892)
    - Fixed inserted text placeholder to vertically align to top and behave like a block-level element when it has 0 width (r262525)
  - Media
    - Fixed a YouTube video that gets stuck after rapidly tapping on touchbar's picture-in-picture button (r262599)
    - Added a quirk to allow starting AudioContext if document was interacted (r263025)
  - WebRTC
    - Improved SCTP cookie generation (r263154)
  - Back-forward Cache
    - Stopped allowing pages served over HTTPS with Cache-Control: no-store into the back-forward cache (r262978)
  - JavaScript
    - Added support for private class fields (r262613)
    - Added "el" (Greek) to our maintained available locales list (r262992)
    - Changed Logical Assignment to perform NamedEvaluation of anonymous functions (r262638)
    - Changed JSON.stringify to throw stack overflow error (r262727)
    - Changed RegExp.prototype getters to throw on cross-realm access (r262908)
    - Changed super to not depend on proto (r263035)
    - Fixed AsyncGenerator to await return completions (r262979)
    - Made errors an own property of AggregateError instead of a prototype accessor (r263006)
  - Editing
    - Fixed text form controls to prevent scrolling by a pixel when the value is the same length as the size (r263073)
    - Fixed observing a newly displayed element inside previously observed content (r263044)
    - Fixed text manipulation to exclude characters outside of the unicode private use area (r262645)
    - Fixed editing to handle nested item boundary elements (r263101)
    - Fixed to not re-extract elements whose children have been manipulated (r263132)
    - Fixed first and last unit in a paragraph to not contain only excluded tokens (r262601)
  - Accessibility
    - Changed <address> element to no longer map to ARIA contentinfo role (r263096)
  - Apple Pay
    - Added new values for -apple-pay-button-type (r262528)
  - Web Inspector
    - Changed text inputs to not spellcheck or autocomplete (r262848)
    - Fixed an issue where XHRs with the same URL as the main resource were not shown in the Sources Tab (r262842)
    - Improved the performance of resizing the Scope Chain panel in the details sidebar of the Sources Tab (r263115)
  - Web Driver
    - Fixed Automation.computeElementLayout to return iframe-relative element rects when the coordinate system is "Page" (r262997)
    - Fixed WebDriver on non-iOS ports that cannot perform ActionChain which has scrolling down to the element and click it (r262861)
Position
- (https://lists.webkit.org/pipermail/webkit-dev/ から Position Request についてだけ抜粋)
- [webkit-dev] Fwd: Position on emerging standard: Scroll-linked Animations
  - https://lists.webkit.org/pipermail/webkit-dev/2020-June/031226.html
- [webkit-dev] Request for position on First-Party Sets
  - https://lists.webkit.org/pipermail/webkit-dev/2020-June/031227.html
- [webkit-dev] Request for position on removing 'no-preference' for prefers-color-scheme media feature
  - https://lists.webkit.org/pipermail/webkit-dev/2020-June/031229.html
- [webkit-dev] Request for position on Media Feeds
  - https://lists.webkit.org/pipermail/webkit-dev/2020-June/031234.html
Other
- Apple declined to implement 16 Web APIs in Safari due to privacy concerns
  - https://gigazine.net/news/20200629-apple-web-api-decline/
  - https://www.zdnet.com/article/apple-declined-to-implement-16-web-apis-in-safari-due-to-privacy-concerns/
  - Tracking Prevention in WebKit
    - https://webkit.org/tracking-prevention/#anti-fingerprinting
    - これがソースと思われる。
    - Here are some examples of features we have decided to not implement in part due to fingerprinting concerns:
    - タイトルと比べるとニュアンスはだいぶ違う
- App-Bound Domains
  - https://webkit.org/blog/10882/app-bound-domains/
    - WKWebView で App 内 WebView を使うときに、 Web サイトのトラッキングスクリプトをブロックする方法を提供
      - info.plist の WebAppBoundDomains に allow list を指定する(最大 10 個)
      - WebAppBoundDomains を指定しなければデフォルトの挙動
      - iOS14.0, macOS Big Sur 以降では WKWebView で ITP が有効になる
- Async Clipboard API
  - https://webkit.org/blog/10855/async-clipboard-api/

Edge 動向

Stable: 83
Updates
- Dev channel update to 85.0.552.1 is live - Microsoft Tech Community - 1487202
  - https://techcommunity.microsoft.com/t5/discussions/dev-channel-update-to-85-0-552-1-is-live/m-p/1487202
  - Added a New Tab Page Search Box management policy. Administrative Template updates to come later.
  - Added support for the Auto Open Allowed For URLs management policy from upstream Chromium.
  - Added support for the Auto Open File Types management policy from upstream Chromium.
- Improving Memory Usage in Microsoft Edge
  - https://blogs.windows.com/msedgedev/2020/06/17/improving-memory-usage/
  - Windows のヒープを改善
  - Edge での閲覧時に最大 27% メモリ消費を削減
- ICYMI - Recapping Microsoft Edge at Build 2020
  - https://blogs.windows.com/msedgedev/2020/06/18/icymi-recap-edge-build-2020/
  - Build での Edge 関連まとめ
Chakra
- Release ChakraCore v1.11.20
  - https://github.com/microsoft/ChakraCore/releases/tag/v1.11.20
Other
- Get started with Progressive Web Apps (Chromium) - Microsoft Edge Development
  - https://docs.microsoft.com/en-us/microsoft-edge/progressive-web-apps-chromium/get-started
- Microsoft Edge extends tools for the PDF reader - Microsoft Tech Community - 1303243
  - https://techcommunity.microsoft.com/t5/articles/microsoft-edge-extends-tools-for-the-pdf-reader/m-p/1303243
- Microsoft Edge Read aloud: Now with PDF support - Microsoft Tech Community - 1418076
  - https://techcommunity.microsoft.com/t5/articles/microsoft-edge-read-aloud-now-with-pdf-support/m-p/1418076
- Known Issue - Microsoft Edge Launching on Startup - Microsoft Tech Community - 1457853
  - https://techcommunity.microsoft.com/t5/articles/known-issue-microsoft-edge-launching-on-startup/m-p/1457853
- Roadmap for PDF reader in Microsoft Edge - Microsoft Tech Community - 1467667
  - https://techcommunity.microsoft.com/t5/articles/roadmap-for-pdf-reader-in-microsoft-edge/m-p/1467667
- The all-new Microsoft Edge Add-ons website is now live - Microsoft Tech Community - 1467980
  - https://techcommunity.microsoft.com/t5/articles/the-all-new-microsoft-edge-add-ons-website-is-now-live/m-p/1467980
- Known Issue - Adblock causing errors on YouTube - Microsoft Tech Community - 1486882
  - https://techcommunity.microsoft.com/t5/articles/known-issue-adblock-causing-errors-on-youtube/m-p/1486882
- Password Monitor is now available in Microsoft Edge preview builds - Microsoft Tech Community - 1499656
  - https://techcommunity.microsoft.com/t5/articles/password-monitor-is-now-available-in-microsoft-edge-preview/m-p/1499656
  - パスワードの再利用や漏洩を発見する
  - haveIbeenpound 的な機能
- Upgrading to the new Microsoft Edge through Windows Update (expanded) - Microsoft Tech Community - 1499724
  - https://techcommunity.microsoft.com/t5/articles/upgrading-to-the-new-microsoft-edge-through-windows-update/m-p/1499724
- Survey: Your Experience Installing Microsoft Edge - Microsoft Tech Community - 1500436
  - https://techcommunity.microsoft.com/t5/surveys/survey-your-experience-installing-microsoft-edge/m-p/1500436
  - Edge の利用に関するアンケート

WHATWG/W3C 動向

Recommendation
Proposed Recommendation
Candidate Recommendation
- Notice of CFC: Publish the January 2020 HTML Standard Review Draft as W3C Candidate Recommendation
  - https://lists.w3.org/Archives/Public/public-html/2020May/0017.html
- HTML Review Draft 29 January 2020 Endorsed as a W3C Candidate Recommendation
  - https://www.w3.org/blog/news/archives/8609
- Updated Candidate Recommendation: Web Audio API
  - https://www.w3.org/blog/news/archives/8598
Working Draft
First Public Working Draft
- First Public Working Draft: Rules for Simple Placement of Japanese Ruby
  - https://www.w3.org/blog/news/archives/8593
Chartering
- Proposed W3C Charter: WebTransport Working Group
  - https://lists.w3.org/Archives/Public/public-new-work/2020Jun/0004.html
- Web Performance Working Group Charter Extended
  - https://lists.w3.org/Archives/Public/public-new-work/2020Jun/0000.html
- Service Workers Working Group Charter Extended
  - https://lists.w3.org/Archives/Public/public-new-work/2020Jun/0007.html
Other
- W3C Advisory Committee Elects Advisory Board
  - https://www.w3.org/blog/news/archives/8569

TC39 動向

Meeting
- 2020-01
  - https://github.com/tc39/agendas
  - https://github.com/tc39/notes
- ES2020 Released
  - https://www.ecma-international.org/news/index.html
  - ECMA-262 11th edition - ECMAScript 2020 Language Specification
  - ECMA-402 7th edition - ECMAScript 2020 Internationalization API Specification
Proposals Diff
- https://github.com/tc39/proposals/compare/master@{2020-06-01}...master@{2020-07-01}
- https://tc39.github.io/beta/
- 0->1
  - symbols-weakmap
  - species-extinct
  - array-equality
  - item
- 1->2
  - import-attributes
  - tdeep-path-properties
- 2->3
- 3->4
  - String.prototype.replaceAll
New Proposals
- tabatkins/proposal-item-method: A TC39 proposal to add a .item() method to all the basic indexable classes (Array, String, TypedArray)
  - https://github.com/tabatkins/proposal-item-method
  - 負の数で Array から取得したりできる
- tc39/proposal-import-attributes: Proposal for syntax to import ES modules with attributes
  - https://github.com/tc39/proposal-import-attributes
- legendecas/proposal-async-context
  - https://github.com/legendecas/proposal-async-context
- tc39/proposal-array-equality: Determining Array Equality
  - https://github.com/tc39/proposal-array-equality
- tabatkins/proposal-item-method: A TC39 proposal to add a .item() method to all the basic indexable classes (Array, String, TypedArray)
  - https://github.com/tabatkins/proposal-item-method
- tc39/proposal-deep-path-properties-for-record
  - https://github.com/tc39/proposal-deep-path-properties-for-record
Other

Wrap Up

WWDC
- web extension
- wep
- privacy concern
Firefox regexp redesign
QUIC Last Call
HTTP2 GREASE / UA-CH と WAF
ES2020 / Intl Release
Black Lives Matter - Wording(white/black, master/slave)
インドが中国のアプリをブロック
パスワード漏洩検知をみんなやりはじめた
replaceChildren 同時実装