@hyeseong.kim
Integration engineer / Open source hitchhiker / DX enthusiast
@rescript-lang.org committer
@patak.catReposted by @hyeseong.kimSpaces like @e18e.dev, where maintainers can gather, share their journeys, and collaborate, are more important than ever. Hats off to everyone who keeps making the e18e community such a special place in the ecosystem. And the same to all of you who are out there building bridges between oss projects
@43081j.comReposted by @hyeseong.kimA new text encodings library, iconv-nano, was posted in the @e18e.dev discord.
A day later, the author (Jeremy) is collaborating with @hyeseong.kim on making it ~80% smaller! 🤯
Always impressed by how e18e has managed to join up people with knowledge in such niche subjects 😄
@turbopuffer.bsky.socialReposted by @hyeseong.kimwe implemented batched reads in the v3 full-text engine, leading to a ~9x performance improvement. postings are stored as columns, and we were reading them a row at a time
sometimes optimization is not about being clever, but simply avoiding mistakes
@robpalmer.bsky.socialReposted by @hyeseong.kimECMAScript excitement 😉 Congrats to @peet.bsky.social from TechAtBloomberg advancing JSON.parse Options to Stage 2.7 at @TC39 today 🎉 There are two independent opt-ins. 🔶 deep freezing the entire object 🔶 non-array objects get a null prototype Names may change ⚠️
@cloudflare.socialReposted by @hyeseong.kimCloudflare Containers now start 6x faster, let your agent choose each sandbox's image and instance type at runtime, and support filesystem snapshots in public beta, all controlled from a Durable Object. https://cfl.re/4z9xz6Q #BirthdayWeek
@turbopuffer.bsky.socialReposted by @hyeseong.kimwe're changing tpuf's storage architecture so we can keep pushing the search frontier
the new engine (v3) now passes CI, but we have to make it fast before we ship it to prod
we're grinding query plans in public until v3 wins on everything
follow along: turbopuffer.com/v3
@robpalmer.bsky.socialReposted by @hyeseong.kimECMAScript excitement 😉
Congrats to @ashley-c.bsky.social from TechAtBloomberg on advancing the Composites proposal to Stage 2 at @tc39.es today 🎉
Composites are objects that are compared by value instead of identity. They are an evolution of Record & Tuple proposal.
@jovidecroock.comReposted by @hyeseong.kimPreact 11 is out 🎉 We’ve been hard at work at making our diffing use modern features like moveBefore , leveraging ESM for tree-shaking Preact Compat and ensuring you have a great experience with resumed hydration.
@jasnell.meReposted by @hyeseong.kimSeveral nice additions here.
util.debounce(fn, ...)
util.throttle(fn, ...)
SlidingWindowHistogram
More FFI, net, and vfs goodness
@typescriptlang.orgReposted by @hyeseong.kimA new documentary about @vscode.dev is out! 🎬🎞️🍿
Check out The Story of VS Code, the story of the editor that brought the TypeScript experience to everyone!
www.youtube.com/watch?v=kHL3...
@astro.buildReposted by @hyeseong.kimEcosystem performance meets Astro.
@florian-lefebvre.dev is here to explain how the @e18e.dev project is making your favorite framework smaller and faster ⚡️
@pipobscure.comReposted by @hyeseong.kimNow I’m actually celebrating!
@nodejs.org just merged github.com/nodejs/node/...
Which means it will now be possible to bundle whole applications into ZIP archives and run them straight from the bundle.
Node.js 26.9.0 is out, it enables by default node:ffi and adds support for Web Worker API (behind a flag). Full changelog and download links at nodejs.org/en/blog/rele...
@hyeseong.kimI've ported my unicode-segmenter JS library to Rust. It performs text segmentation 4–5x faster than existing libraries for the grapheme-specific path. Check it out:
@hyeseong.kimI thought I’d have some breathing room right after leaving my job, but my home setting is taking a huge amount of time. I'm not sure if I'll be able to finish everything in this month.
@react.devReposted by @hyeseong.kimReact 19.3 is now available!
This release makes View Transitions and Fragment Refs stable, and adds browser(), Trusted Types support, and Context in Server Components.
@antirez.bsky.socialReposted by @hyeseong.kimDwarfStar running DeepSeek v4.1 Flash on a 128GB M5 Max at steady 15 t/s. I didn't expect with SSD streaming it could be so fast. Recent SSD streaming changes to retain the right experts surely helped, but also maybe DS4.1 uses the same experts more. Will push online when ready QA > ASAP.
