<p><strong>TLDR:</strong> GitHub launched first-class stacked PR support today, which is a big deal for teams doing large feature work. A Frontend Masters post makes the case that AI code tools produce inaccessible components by default and lays out a concrete enforcement stack. Bun’s next release fixes 66% of Windows crash root causes and trims 5% off memory usage. ES2026 is also worth a look — Temporal, <code>using</code> declarations, and <code>Error.isError()</code> are all landing.</p>
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<h2>GitHub stacked PRs are now a first-class feature</h2>
<p>GitHub shipped native stacked pull request support via the <code>gh stack</code> CLI and an integrated stack map in the PR UI. The tooling handles branch creation, cascading rebases, and correct base branch targeting automatically. CI runs against every PR as if it targets the final branch, and merging can happen all at once or incrementally with automatic rebase of remaining PRs. There’s also an AI agent integration available via <code>npx skills add github/gh-stack</code> if you want to go further.</p>
<h2>AI-generated UI is inaccessible out of the box</h2>
<p>A Frontend Masters post documents what most of us have noticed: Claude, Copilot, and Cursor reliably produce div soup, missing ARIA attributes, and no keyboard support. The post proposes a five-layer fix — prompt constraints in workspace config, <code>eslint-plugin-jsx-a11y</code> in CI, <code>jest-axe</code> and <code>axe-core/playwright</code> for runtime testing, GitHub Actions to block inaccessible PRs, and defaulting to Headless UI, Radix, or React Aria for interactive components. The two highest-leverage moves are setting <code>eslint-plugin-jsx-a11y</code> to error in CI and never hand-rolling interactive components.</p>
<h2>Bun’s next release fixes most Windows crashes and cuts memory</h2>
<p>The Bun team says the next release addresses the root causes behind 66% of automated Windows crash reports. The runtime also uses 5% less memory. Neither number is huge on its own, but together they suggest Windows is becoming a more viable target for Bun-based tooling — which matters if your team is mixed OS.</p>
<h2>ES2026 is closer than it feels</h2>
<p>The Temporal API, <code>using</code>/<code>await using</code> for automatic resource cleanup, <code>Error.isError()</code>, <code>Array.fromAsync()</code>, and <code>Math.sumPrecise()</code> are all part of ES2026 with browser and Node.js support rolling out this year. Temporal in particular has been a long time coming — immutable, timezone-aware date types that replace the <code>Date</code> object. Polyfills are available now if you want to start.</p>
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<h2>Also notable</h2>
<ul>
<li><strong>Magecart campaign active now:</strong> A live skimmer campaign is injecting fake payment forms disguised as Google Tag Manager, with admin detection, anti-debugging, and platform fingerprinting for WooCommerce, Magento, OpenCart, and PrestaShop. The IOC is <code>styleoutsperee.com</code> (registered Feb 2026) — audit your checkout scripts.</li>
<li><strong>Symfony UX 3.0:</strong> Drops PHP 8.4 and Symfony 7.4 as minimums, removes Swup, LazyImage, Typed, and TogglePassword packages, and cleans up LiveComponent CSRF handling. Migration guide is in <code>UPGRADE-3.0.md</code>.</li>
<li><strong>CSS View Transitions recipes:</strong> Seven ready-to-use transition recipes with full code — pixelate dissolve, wipe up, rotate in-out, circle wipe-out, diagonal push, curtain reveal, and 3D flip — all wrapped in <code>prefers-reduced-motion</code> guards.</li>
<li><strong>StyleSeed:</strong> Open-source design system for Claude Code and Cursor with 69 design rules, 48 shadcn/Radix components, and brand skins for Toss, Stripe, Linear, Vercel, and Notion. Tailwind v4 + React 18.</li>
<li><strong>Shopify safe area inset CSS variable:</strong> <code>--shopify-safe-area-inset-bottom</code> lands April 15th for embedded apps. Apps with custom fixed-bottom elements need <code>var(--shopify-safe-area-inset-bottom, 0px)</code> or content will be obscured.</li>
<li><strong>SVG-to-CSS converter updated:</strong> Now handles multiple SVG path elements, merging them into a single <code>shape()</code> CSS function. Not a replacement for SVG, but useful for single-element responsive shapes.</li>
<li><strong>Cypress Cloud MCP + accessibility:</strong> Cypress Accessibility data is now accessible to AI agents via MCP, enabling triage, fix suggestions, and regression checks from prompts.</li>
<li><strong>Rive Framer plugin:</strong> Native <code>.riv</code> file support in Framer with state machine input access and component variant control.</li>
<li><strong>Benchmarking matters:</strong> A real-world case at Aha! where a 15-minute sprint report load time was traced to <code>lodash.cloneDeep</code> and <code>moment.format</code> in hot paths — replacing both cut parse time by 100x.</li>
<li><strong>Promise cancellation trick:</strong> A never-resolving promise can interrupt async functions cleanly without try/catch issues — the technique behind Inngest’s TypeScript SDK workflow model. <code>FinalizationRegistry</code> confirms the abandoned promises are GC’d correctly.</li>
</ul>


Frontend development news, CSS techniques, framework updates, and browser API changes.

Web Digest

GitHub launched native stacked PR support via the `gh stack` CLI with cascading rebases, CI integration, and incremental merging. A Frontend Masters post highlights that AI tools like Claude, Copilot, and Cursor produce inaccessible UI by default, proposing a five-layer enforcement stack including eslint-plugin-jsx-a11y, jest-axe, and accessible component libraries. Bun's next release resolves 66% of Windows crash root causes and cuts memory usage by 5%. ES2026 features including Temporal, `using` declarations, Error.isError(), and Array.fromAsync() are rolling out with polyfills available now. Also covered: an active Magecart skimmer campaign targeting e-commerce platforms, Symfony UX 3.0 release, CSS View Transitions recipes, and a performance case study tracing slow load times to lodash.cloneDeep and moment.format.

GitHub ships stacked PRs, AI-generated UI fails accessibility by default