We all dodged a bullet https://xeiaso.net/notes/2025/we-dodged-a-bullet/

second: devs tend to fixate on repetitiveness as a sign of poor code quality. but the cure is often worse than the disease, because if unchecked it leads to the thing that, in my experience, really _is_ a sign of poor code quality: indirection. when you're writing code, indirection is your nemesis.

some thoughts about the bloat introduced by edge-case first libraries

Great benchmark! We're continuously optimizing Rspack for faster builds and smaller bundle sizes. It's worth noting that webpack/Rspack produce larger bundles in this case due to different handling of dynamic require() in moment.js, see github.com/filipsobol/b...

The Register wrote a story about a single maintainer open source project, I think it's shameful and upsetting So I wrote a blog post about it An absolutely ridiculous amount of open source is one person projects. I have the data to prove it opensourcesecurity.io/2025/08-oss-...

About 10 months ago I benchmarked the most popular bundlers to compare build speed and bundle size (tree-shaking + minification). I just re-ran the tests with the latest versions to see what’s changed 👇

Multithreaded linting just landed in ESLint! eslint.org/blog/2025/08...

oxlint + tsgolint = no slow down! no-floating-promises completes 4.4k files in 3.2 seconds, in the vscode repo. typescript-go is the future, all credits to the ts-go team! We just glued everything together 😀 github.com/microsoft/ty...

Oxlint is making a huge step forward! Two new updates: JS custom rules, with ESLint compatible API are on the way. The first prototype gives a good speedup already! 🔥 Type-aware rules. Full coverage no-floating-promise through tsgolint, integrated like the other oxlint rules and extremely fast.

When @eslint.org added official support for Markdown files, I figured it could be perfect for validating changeset files. It fits the use case really well.

Big week for Sonda. After 6 months of work, v0.8 is finally out. v0.8.1 and v0.8.2 followed with QoL improvements and minor bug fixes. This week, it also hit 500+ GitHub stars and 20K weekly downloads on npm. Feels like v1.0 is getting close.

I declined a $1,000/month ESLint sponsorship from a pay-for-follows company. That's not the type of sponsor we want. It's frustrating that these types of companies (as well as online casinos) are more willing to sponsor ESLint than tech companies where ESLint is used.

I wrote an article about how we cut CKEditor’s bundle size by 40% by improving tree-shaking. It covers the tools and processes we used, how we measured improvements and caught regressions, along with techniques you can apply in your own libraries. ckeditor.com/blog/how-we-...

So close to 500 stars... github.com/filipsobol/s...

Production bundle quality matters. In Rspack 1.4, we collaborated with SWC to improve dead code elimination. For example, Rspack and SWC can now produce the smallest bundle for react-router-dom.

I handled a Webpack-to-Vite migration for a large-ish project, and the lack of a decent bundle analyzer was a major pain point of the Vite ecosystem. Sonda solves this problem beautifully.

Sonda v0.8 is here, and it's the biggest release to date. It introduces a new UI that makes it easier to inspect and visualize large projects. It also displays more information about assets, inputs, external dependencies, and import relationships. Demo and details below 👇

TypeScript excitement 😉 Congrats to @searyanc.dev on landing big updates to the default tsconfig settings used by `tsc --init` 🎉 Defaults matter - and in TS 5.9 they embrace simplicity 💙 🔷 ESM (was CommonJS) 🔷 No down-leveling (was ES2016) 🔷 verbatimModuleSyntax: true github.com/microsoft/Ty...

Today we are excited to announce Rolldown-Vite: a technical preview of the version of @vite.dev entirely powered by the Rust stack we built over the past year (Oxc + @rolldown.rs) voidzero.dev/posts/announ...

Linting our biggest codebase with a bunch of rules (including many custom ones) currently takes about 38s. Adding `--concurrency=auto` dropped it to 12 seconds. Can't wait for this to be released.

TIL that TypeScript 6 will deprecate 'node' / 'node10' module resolution strategy. This will fix so many issues for library authors. Thanks @typescriptlang.org team 🙏

Today we're announcing previews of the native port of TypeScript! These nightly previews will be available on npm and the VS Code marketplace! npm install -D @​typescript/native-preview npx tsgo --version Read up more on our blog!

Sneak peek of the new Sonda design that I’ve been working on for the past few months. Well... it started as a redesign, but turned into a full rewrite of both the frontend and backend. The new design should work much better for big projects and set the stage for what’s next.

Promotion happened. Staff Engineer.

Node.js v20.19.0 is out 🤩 This is a special minor release ✨ Although v20 is in maintenance mode, meaning only patch releases are expected, an exception was made to backport require(esm) due to its importance and impact on the ecosystem. Full changelog 👇 nodejs.org/en/blog/rele...

Today we're thrilled to announce our effort to port the TypeScript compiler and language service to native code, gaining a 10x speed boost in build times and editor responsiveness! devblogs.microsoft.com/typescript/t...

Speeding up the JavaScript ecosystem part 11 is here! This time we're looking at: Extending Rust tools with JavaScript plugins marvinh.dev/blog/speedin...

🚀 ESLint now officially supports linting CSS! Read more: eslint.org/blog/2025/02...

After four months in the making, tinyglobby 0.2.11 is out! This release adds important optimizations to avoid crawling extra directories, which should greatly improve performance in almost all cases! Here's how we did it 🧵 github.com/SuperchupuDe...

It looks like @tailwindcss.com v4 generates up to 20 kB of unused (minified) CSS. PurgeCSS can remove most of it. Expected size: 1.5 kB Actual size: 21.8 kB After PurgeCSS: 3.3 kB

What's the expected minimal bundle size for a Vue Vapor app (or size reduction compared to regular @vuejs.org app)? The `js-framework-benchmark` example using Vue Vapor comes in at ~39 KB uncompressed (compared to ~62 KB for regular Vue), but there was a lot of progress made since it was added.

`sonda` just hit 10k weekly downloads on npm! Huge thanks to everyone using it and supporting the project 🙏 If you haven’t tried it yet and want to see what’s inside your JS & CSS bundles, check it out here: sonda.dev

`require(esm)` got backported to Node 20! 🎉 When Node 18 hits EOL in less than 3 months, we can finally drop CJS builds and go ESM-only

Oracle justified its JavaScript trademark by claiming Node.js — now it wants that ignored #FreeJavaScript deno.com/blog/deno-v-...

New blog post! Let's move to ESM! 😈 👀 antfu.me/posts/move-o...

Preact is truly amazing. Same React app. One is bundled as is. Another uses preact/compat to alias React imports and swaps in Preact under the hood. Bundle size (gzip): React: ~140KB Preact: ~8KB All of this by just changing a few lines and installing a couple of packages.

Written a little about the journey to @e18e.dev and what's ahead for the community in 2025. I'm so happy to see how many great minds have been connected, and the awesome projects they're working on 🩵

Bundle, but don't minify

Just tried out sonda.dev , a new bundle analyzer from @filipsobol.bsky.social . Very impressed! Simple to set up, fast results, and particularly handy view of size from original lib sources (assuming lib sourcemaps) with the `detailed` option.

In 2024, we have redistributed a total of $4,371.83 USD to the open-source community! Thanks to everyone who supported this idea! 💖 Here is the recap: opencollective.com/antfu/update...

Sonda has a new Angular CLI integration. sonda.dev/frameworks/a...

Impressive work by the @rspack.dev team. The latest alpha release reduces build size by 5% and improves build speed by 7% on my benchmark repo.

Sonda will soon have Angular integration too! If you'd like to give it a try, see this issue: github.com/filipsobol/s.... Already found duplicate dependencies in the server bundle in a fresh Angular project.

It’s time for THE charger. Today, the USB-C becomes officially the common standard for charging new mobile electronic devices in the EU. It means better-charging technology, reduced e-waste, and less fuss to find the chargers you need! #DigitalEU

You can now use Sonda to visualize and analyze @nextjs.org, @nuxt.com, @astro.build, and @svelte.dev Kit bundles, thanks to the just released integrations. Check out the docs: sonda.dev/getting-star...

You can now use Sonda to visualize and analyze @nextjs.org, @nuxt.com, @astro.build, and @svelte.dev Kit bundles, thanks to the just released integrations. Check out the docs: sonda.dev/getting-star...

There's a PR to make TypeScript work in Node by default. Happy freaking Christmas.

🎁 A surprise holidays gift: after over a year of hard work, we have just published Rolldown 1.0.0-beta.1!

So happy to see this. These efforts started with only a few people and no space to collaborate. Now we have 1k+ members, a space, and so many community projects 😍

The article was picked as one of the top 7 posts of the week by the @dev.to team and has over 5k views so far. This is so encouraging, as I've only recently started writing again. I'm already working on something new, but it requires quite a lot of research.