Faster web vitals 📊, Swift in the browser 🌐, terminals without canvas 💻
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TLDR Dev 2026-10-30
What do Cursor, OpenAI, Anthropic, SpaceX, Entire, Airbnb, Nvidia, Uber and Meta SI have in common? (Sponsor)
Buildkite, the CI orchestration platform for AI.
Buildkite, the CI orchestration platform for AI.
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Build faster, more securely, more reliably, with the CI engineered for frontier scale, used by the teams setting the pace.
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Articles & Tutorials
Measuring Soft Navigation Web Vitals (11 minute read)
Sentry's JavaScript SDK v11 measures LCP, CLS, and INP for client-side navigations, exposing slow routes that initial page-load metrics miss. Support currently requires Chromium 151 or later, and the scores should be filtered separately from page loads because their clocks start at different points.
Sentry's JavaScript SDK v11 measures LCP, CLS, and INP for client-side navigations, exposing slow routes that initial page-load metrics miss. Support currently requires Chromium 151 or later, and the scores should be filtered separately from page loads because their clocks start at different points.
The Web Can't Afford a JavaScript Runtime Monoculture (6 minute read)
Deno's planned end of runtime development narrows the major server-side JavaScript choices to Node.js, Bun, and Cloudflare's workerd. Historical examples from Internet Explorer and the io.js fork show how independent implementations can prevent stagnation and push features into competing runtimes.
Deno's planned end of runtime development narrows the major server-side JavaScript choices to Node.js, Bun, and Cloudflare's workerd. Historical examples from Internet Explorer and the io.js fork show how independent implementations can prevent stagnation and push features into competing runtimes.
Optimizing the sh*t out of TanStack Start (17 minute read)
A TanStack Start site improved its mobile Lighthouse score from 73 to 100 and reduced LCP from 5.2 seconds to 1.7 seconds by removing unnecessary JavaScript, images, and font data. More complex changes added maintenance without clearly explaining the final score, making basic asset reductions and regression budgets the more useful starting point.
A TanStack Start site improved its mobile Lighthouse score from 73 to 100 and reduced LCP from 5.2 seconds to 1.7 seconds by removing unnecessary JavaScript, images, and font data. More complex changes added maintenance without clearly explaining the final score, making basic asset reductions and regression budgets the more useful starting point.
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Opinions & Advice
How I Built the Most AI-Pilled Company in the World (18 minute read)
Spawn reports shipping 77,000 substantial changes in 30 days with a ten-person team and $3.1 million in token spending, using permanent agents that own parts of the company. Its approach combines direct production feedback, frequent tests, hourly deployments, and fast recovery, with hard-coded gates for irreversible actions. Humans focus on product taste and ambitious changes that agents rarely propose themselves.
Spawn reports shipping 77,000 substantial changes in 30 days with a ten-person team and $3.1 million in token spending, using permanent agents that own parts of the company. Its approach combines direct production feedback, frequent tests, hourly deployments, and fast recovery, with hard-coded gates for irreversible actions. Humans focus on product taste and ambitious changes that agents rarely propose themselves.
Design Systems Should Be Fast by Default (18 minute read)
Benchmarks of large dropdowns and checkbox lists across ten design systems trace slow interactions to repeated layout work, slot handling, and per-checkbox animations. Published Playwright tests enforce timing budgets so shared components can catch performance regressions before they reach every consuming app.
Benchmarks of large dropdowns and checkbox lists across ten design systems trace slow interactions to repeated layout work, slot handling, and per-checkbox animations. Published Playwright tests enforce timing budgets so shared components can catch performance regressions before they reach every consuming app.
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Launches & Tools
Automate a software factory that works for humans (Sponsor)
How can AI do more while engineers stay in control? Join LaunchDarkly and Ramp virtually and learn:
How can AI do more while engineers stay in control? Join LaunchDarkly and Ramp virtually and learn:
- How they've automated their AI software factory.
- Why new features like automatic flag creation, autonomous releases, and intelligent flag cleanup make it possible.
- The benefits of moving control to production.
wterm (Website)
wterm renders a terminal into the DOM, providing native text selection, browser find, and screen reader support. It offers React, Vue, and Svelte bindings, pluggable Zig/WASM or Ghostty cores, and WebSocket transport for connecting to a PTY backend.
wterm renders a terminal into the DOM, providing native text selection, browser find, and screen reader support. It offers React, Vue, and Svelte bindings, pluggable Zig/WASM or Ghostty cores, and WebSocket transport for connecting to a PTY backend.
ElementaryUI (Website)
ElementaryUI brings declarative Swift interfaces to the browser through WebAssembly, with SwiftUI-inspired syntax and reactive state. It supports Embedded Swift for small bundles and uses Vite for hot reload during development.
ElementaryUI brings declarative Swift interfaces to the browser through WebAssembly, with SwiftUI-inspired syntax and reactive state. It supports Embedded Swift for small bundles and uses Vite for hot reload during development.
Radix: 3D Gaussian Splats for the Web (Website)
Radix stores 3D Gaussian splats in typed-array tables on the CPU and GPU and renders them through three.js. Its examples run on WebGPU with a WebGL2 fallback, and the site includes source code, documentation, and ready-to-run scenes.
Radix stores 3D Gaussian splats in typed-array tables on the CPU and GPU and renders them through three.js. Its examples run on WebGPU with a WebGL2 fallback, and the site includes source code, documentation, and ready-to-run scenes.
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Miscellaneous
Pico CSS Is No Longer Maintained (1 minute read)
Pico CSS has been archived, with version 2.1.1 designated as the final release. Existing npm packages, the CDN, and documentation remain available, while the MIT license allows community forks under different names.
Pico CSS has been archived, with version 2.1.1 designated as the final release. Existing npm packages, the CDN, and documentation remain available, while the MIT license allows community forks under different names.
Project Speed (10 minute read)
Owner rebuilt infrastructure serving more than 10,000 restaurant websites with Astro, selective React, and edge caching. Menu-page p75 LCP fell from 5.4 seconds to 0.7 seconds, while the rollout raised per-restaurant revenue by more than 4%.
Owner rebuilt infrastructure serving more than 10,000 restaurant websites with Astro, selective React, and edge caching. Menu-page p75 LCP fell from 5.4 seconds to 0.7 seconds, while the rollout raised per-restaurant revenue by more than 4%.
How fast can you actually patch Ruby? (7 minute read)
A comparison of Ruby 4.0.9 availability tracks the gap between a security release and its arrival in installers, container images, CI providers, and hosting platforms. Core-team tools shipped within minutes, while the default Docker image took almost 16 hours and some cloud runtimes took days, showing why teams need to audit the entire update path.
A comparison of Ruby 4.0.9 availability tracks the gap between a security release and its arrival in installers, container images, CI providers, and hosting platforms. Core-team tools shipped within minutes, while the default Docker image took almost 16 hours and some cloud runtimes took days, showing why teams need to audit the entire update path.
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Quick Links
Survey: Nearly 40% of AI-generated code never ships to production (Sponsor)
Amid quality concerns, developers estimate that only 61% of AI-generated code is released to production. Read the report
Amid quality concerns, developers estimate that only 61% of AI-generated code is released to production. Read the report
If IPv4 Were Land (Website)
An interactive cartogram resizes countries by their share of locatable IPv4 addresses, using October 2026 geolocation data.
An interactive cartogram resizes countries by their share of locatable IPv4 addresses, using October 2026 geolocation data.
A Better Way to Handle Select Behaviour (4 minute read)
The customizable native select introduces a shared interaction model through appearance: base-select, reducing the need to reproduce conflicting Mac and Windows conventions.
The customizable native select introduces a shared interaction model through appearance: base-select, reducing the need to reproduce conflicting Mac and Windows conventions.
Node.js 26 LTS Is Generally Available on Vercel (1 minute read)
Node.js 26 is now Vercel's default for new projects, and existing projects whose engines.node range permits it upgrade on their next deployment.
Node.js 26 is now Vercel's default for new projects, and existing projects whose engines.node range permits it upgrade on their next deployment.
Thank you, but I prefer it my way (22 minute read)
LLMs make rewriting libraries easier than collaborating on them, raising the risk of fragmented projects, and weakening the incentives to contribute improvements upstream.
LLMs make rewriting libraries easier than collaborating on them, raising the risk of fragmented projects, and weakening the incentives to contribute improvements upstream.
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Thanks for reading,
Priyam Mohanty, Jenny Xu
Thanks for reading,
Priyam Mohanty, Jenny Xu