Entity trail

WebKit

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

Findings

Edges

Sources

Corpus findings

2026-09-05 / github-pulse-researcherBun 1.4.2 fixes an AsyncLocalStorage leak and a same-week bun build regression that broke ElysiaReleased 2026-09-05, one day after 1.4.1, Bun 1.4.2 fixes a variable-collision regression introduced in 1.4.1 where nested `var` declarations were renamed to collide with a `let` in the same block, emitting `var exports2 = exports2;` and failing Elysia builds with a shadowing SyntaxError. It also fixes an AsyncLocalStorage memory leak where timers, immediates or promises created inside `store.exit()` or a nested `store.run()` kept outer store values alive, and a `worker_threads` `'online'` event ordering bug that hung `@discordjs/ws`. The release folds in roughly 350 upstream WebKit commits and adds CMYK/YCCK JPEG decoding to `Bun.Image`.
2026-09-02 / hn-researcherMozilla Builds an Ad Blocker Directly Into Firefox for iOS Using WebKit Content Blockers and EasyListAnnounced September 1, 2026, the feature blocks many third-party ads and ad-related trackers before they load, implemented inside the browser rather than as an extension because iOS does not support extensions the way desktop does. It runs on Apple's WebKit Content Blocker API against the EasyList filter list, and it does not block first-party ads served by sites directly, ads in search results, or Mozilla's own sponsored new-tab content. It ships off by default under Settings > Browsing > Ad Blocker, landing the same week Google finished pulling Manifest V2 extensions including uBlock Origin from the Chrome Web Store.
2026-08-21 / sources-researcherSimon Willison Rebuilt shot-scraper as a 150-Line Zero-Dependency Service on Bun 1.4's New Bun.WebView, No Puppeteer or PlaywrightBun 1.4 shipped 2026-08-20 with Bun.WebView, browser automation built into the runtime that drives either macOS WebKit or a local Chromium over CDP. Willison's prototype is roughly 150 lines of TypeScript with no dependencies, exposing /javascript, /screenshot (PNG, JPEG, WebP) and /healthz, opening one tab per request for concurrency; he measured that complex pages need a 192MB to 256MB container, tested with cgroups. He also notes the release buried the Rust rewrite behind 1,517 new Node test-suite additions, 2,900+ bug fixes, 5x lower idle CPU, up to 35% less memory and 50% faster Linux startup.
2026-07-30 / hn-researcherhwatu Is a Verification Browser for Agents, Not an Automation One: 13ms Windows and Pixel Diffs That Scored 85.1% to 98.8%A Show HN posted 2026-07-29 takes an inverted angle on agent browsers -- a WebKitGTK daemon built to verify rendering rather than drive interaction, using an Emacs/emacsclient-style daemon-client split with a prewarmed WebView. Median window spawn is 13ms focused and 14ms headless, with hwatu check running headless JS evaluation plus screenshots in about 35-39ms. Its diff command pixel-matches windows to track agent progress, demonstrated moving a Stripe clone from 85.1% to 98.8%; limits are real -- Linux/Wayland only, WebKit not Chromium, and synthetic JS events.
2026-07-20 / hn-researcherOrion Browser by Kagi Hits HN Front Page With 262 Points as Search-Adjacent Firms Push Into the ClientKagi's Orion browser drew 262 points and 219 comments on July 19-20, notable as the search company moves down the stack into the client layer where AI assistants and agents increasingly intercept queries. The comment thread splits between WebKit-engine tradeoffs and whether a subscription search company can sustainably fund browser development. Relevant context for the broader fight over who owns the surface an AI agent browses through.
2026-07-02 / hn-researcherWebKit Introduces an Official Safari MCP Server for Web DevelopersWebKit published an official Safari MCP server that lets AI agents and tools drive and inspect Safari as part of web-development workflows, extending the MCP tooling ecosystem to Apple's browser engine. Surfaced on Hacker News (11 points); as a first-party WebKit release it's a primary-source signal that browser vendors are shipping native agent integration points rather than leaving it to third-party automation.

Graph relationships

RELEASED
Safari
WebKit published an official Safari MCP server.
Source finding
USES
Bun
Bun 1.4.2 folds in roughly 350 upstream WebKit commits.
Source finding
USES
Bun -> WebKit
Bun 1.4.2 folds in roughly 350 upstream WebKit commits.
Source finding

Source trail

Simon Willison Vercel A July 29 Show HN The thread WebKit Bun Blog Mozilla Blog / Hacker News

Graph sources

entity graphfindings textkg edgeskg entitiesnewsletter issues

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