Luca Casonato 🏳️🌈 @lcasdev
Software person. Prev built @jsr_io and @deno_land. Creator of Fresh. @tc39 delegate. he/him 🏳️🌈🌍🌻💚 lcas.dev The Netherlands Joined March 2014-
Tweets4K
-
Followers7K
-
Following336
-
Likes6K
@dcolascione @victormustar You can not. It can only be sent in headers to specific domains that are in the allow list for the given env.
@DavidSherret @elvecent_not @liran_tal @deno_land And for every fetched source file, the hash is in the meta file (so you can verify those using that hash)
@liran_tal @deno_land I honestly find it rude that you think we are this stupid. The secret is not inside the VM. It is injected using a MitM proxy that sits outside the VM based on the SNI of the outgoing request Also it takes literally 30 seconds for you to verify whether this works before tweeting
@aloo @rough__sea Yes, that's the plan
I am very proud of the team for the runtime level mitigation we rolled out to @deno_land Deploy for this. It's very precise, very fast, and way less prone to false positives than a WAF based block. All React reversions are safe when running on Deno Deploy. Vertical integration!
There is critical vulnerability in React Server Components disclosed as CVE-2025-55182 that impacts React 19 and frameworks that use it. A fix has been published in React versions 19.0.1, 19.1.2, and 19.2.1. We recommend upgrading immediately. react.dev/blog/2025/12/0…
@MFrancis107 @deno_land That's odd - `deno run --tunnel` uses QUIC. Can you figure out whether your network is blocking that somehow? One thing you can try is going to http3.is and then reloading after first load.
@MFrancis107 @deno_land Are you behind some corporate proxy? If you visit deno.com, what TLS certificate do you get served?
@MFrancis107 @deno_land That works!
@katsuba_igor @deno_land @mastra @langfuse That already works. Instructions are on this page (see otel endpoint section) langfuse.com/docs/opentelem…
@zkochan @pnpmjs @deno_land I already commented on it in a couple of places 👍 (I work on JSR at Deno)
@slicknet What specifically isn’t working for you? We are standardizing the behavior in WinterTC right now - would you like to join the calls?
We've published our official JavaScript SDK on @jsr_io. In Deno, we can use web standard interfaces like WebSocket on the server, as in this example with the Realtime API. Let us know what you think! 🦕
The @OpenAI JavaScript SDK is now on @jsr_io 🎉️ deno.com/blog/openai-on…
Full transparency: someone from both @ncsc_nl and the incident response team from @Logius_minbzk reached out to me and are working on resolution. The system does work after all - report issues folks! And thanks folks :)
I sent a CVD report to @ncsc_nl's CERT, and they are being wholly unhelpful. Do I know anyone that works on DigiD or other cyber security stuff at @Rijksoverheid? Is there a report channel for DigiD directly that bypasses NCSC?
@initjean @ncsc_nl @Rijksoverheid @0xDUDE @DIVDnl Oh journalists would be great - can you dm me their names?
I sent a CVD report to @ncsc_nl's CERT, and they are being wholly unhelpful. Do I know anyone that works on DigiD or other cyber security stuff at @Rijksoverheid? Is there a report channel for DigiD directly that bypasses NCSC?
@kettanaito @okikio_dev Undici does not support the “pass a generator function” thing. It honestly doesn’t even make sense - just invoke it and you have a async iterable?
It's done. Now it’s your turn, @Oracle. We’ve submitted a formal petition to cancel the JavaScript trademark: it is generic, Oracle has abandoned it, and Oracle committed fraud on the USPTO during the last trademark renewal. Oracle has until January 4th to respond, or the case will go into default, which will result in the trademark being canceled. It's time to #FreeJavaScript. deno.com/blog/deno-v-or…
@dunkbingg @deno_land Is your CI job using Deno 1 or Deno 2?
Matt Pocock @mattpocockuk
288K Followers 784 Following I teach devs for a living. Author of Total TypeScript and AI Hero. Ex-@vercel. Used to be a voice coach.
Theo - t3.gg @theo
343K Followers 4K Following Full time CEO @t3dotchat. Part time YouTuber, investor, and developer
Cory House @housecor
159K Followers 807 Following I help dev teams be insanely productive with AI. Courses: https://t.co/D5emROQHUh & https://t.co/6L1fD89GbP Consulting: https://t.co/Qfp4TfpB8N ⚛️
Matteo Collina @matteocollina
57K Followers 4K Following @platformatic Co-Founder & CTO, @nodejs TSC Chair, Lead maintainer @fastifyjs, Board @OpenJSF, Conference Speaker, Ph.D. Past: @nearform. Views are my own.
Evan You @evanyou
311K Followers 2K Following Husband / Father of two / Founder @voidzerodev (acq. @cloudflare) / Creator @vuejs & @vite_js. Chinese-only alt: @yuxiyou
Ryan Carniato @RyanCarniato
56K Followers 484 Following got signals? @solid_js @Sentry 👫@RunningZ98577 🇨🇦
Devon Govett @devongovett
42K Followers 1K Following Creator of @parceljs. Engineer @adobe working on React Aria and React Spectrum.
Rich Harris @Rich_Harris
95K Followers 2K Following Cheese fan. I work on @sveltejs at @vercel. Mostly posting at https://t.co/1DNxt27Pks
Jake Archibald @jaffathecake
107K Followers 2K Following Developer of sorts at @firefox. No thought goes unpublished. He/him. Also jaffathecake on Mastodon, bsky, Threads etc.
Alex / KATT 🐱 @alexdotjs
29K Followers 2K Following 👋 I'm Alex & I tweet about web dev stuff 🧙♂️ Open-sourcerer & fully-stacked typescripter. 👉 Creator of @trpcio, work @square, scout @a16z
Donny (강동윤) @kdy1dev
18K Followers 400 Following CEO of @delinoio / Creator of @swc_rs / Dev at @ZephyrCloudIO / Opinions are my own / Formerly @vercel, @deno_land
Jason Miller 🦊⚛ @_developit
63K Followers 2K Following Platform DX @Shopify. Created @preactjs. Do more with less. https://t.co/z1d6J24DlE @[email protected]
Seb ⚛️ ThisWeekIn... @sebastienlorber
54K Followers 5K Following 🔥 Join 40k devs - Stay up-to-date with React: • 📨 https://t.co/DvLGHeLY5G • @ThisWeekInReact • @docusaurus maintainer • 🇫🇷
Malte Ubl @cramforce
48K Followers 904 Following Self-driving infrastructure @Vercel CTO. Immigrant 🇺🇸/🇩🇪/acc
Surma @DasSurma
38K Followers 1K Following DX & monorepo at @ShopifyEng Craving simplicity, finding it nowhere. Internetrovert 🏳️🌈 He/him.
Rob Palmer @robpalmer2
11K Followers 2K Following JavaScript Infrastructure & Tooling at Bloomberg. Co-chairing @TC39. Likely to tweet tech stuff about JS & software performance. Opinions are my own.
colinhacks/zod @colinhacks
25K Followers 1K Following building @pullfrogai 🐸 the Zod guy 💎 created zshy, co-created Standard Schema, tRPC 🧙 friendly neighborhood typescript nerd 🦆 prev @ bun, edgedb 💻 mit 🏛️
fks @FredKSchott
26K Followers 1K Following @astrodotbuild co-creator • Flue creator • ex-CEO of HTML
fsousdev @fsousdev
0 Followers 18 Following
Jeffrey Behnke 💻 @jeff_behnke_
831 Followers 920 Following 🧑💻 Code for 20+ years • Innovation Engineer • Passionate about R&D • AI enthusiast (tool, not replacement) 🔥
SelfAwareCompute @SelfAwareComput
10 Followers 184 Following We make software self-aware. Predicting execution, optimizing in real time, reducing energy and cost across modern compute. https://t.co/Ry7Nv2DcNT
Eniola @ganiyu_muh41840
0 Followers 75 Following A graphic designer, meme creator, NFT & Airdrop hunter, community moderator
Thuy Hoang @thuydev
0 Followers 88 Following
Nithin S @NithinS313
34 Followers 3K Following
Uenis Oliveira @oliveira_u30809
2 Followers 97 Following
Tracebit @tracebit_com
312 Followers 4K Following The Assume Breach platform that detects intrusions in seconds. Also on https://t.co/T4VNPGjS2O
Manin @uaibrittin
2 Followers 290 Following
あ @tech_lily_
216 Followers 495 Following
Joyce DeCerce @JoyceDecerce
141 Followers 314 Following Anglo-Catholic. 1st gen Italian American. A fool and an instigator, but an honest one. I elect Democrats, like @KamalaHarris, @CharlieCrist, and @DonnaDeegan.
Conner Ruhl @connerruhl
2K Followers 706 Following open-source AI · protocols · programming · paragliding · building https://t.co/Cdhh8ECQnL · previously https://t.co/2fw43SSQGD · 🇺🇸🏳️🌈
Cyrus @zenparyavi
343 Followers 3K Following Technologist, Explorer, Agnostic | PhD in Electrical & Computer Engineering | Smart Camera Developer | Using CV, Robotics & IoT to Save Coco Palms
Sithu Khant @sithukhant_
72 Followers 329 Following https://t.co/G1kmn6jxwV - Reddit tool https://t.co/Y48JLtUJln - Invoice & Bank Statement tool
Roscoe Rubin-Rottenbe... @knotbin
1K Followers 987 Following 16yr old atproto dev, mysterious but largely unimportant, democratizing social @ https://t.co/b7nNzeioa1, prev. @getlsd
sparks @14hrscreentime
13 Followers 363 Following
Kalleby Santos @kalabresa_br
24 Followers 49 Following Functions Engineer at @Supabase --- Só mais um garoto de programa, Lá ele!
julien nicolas @nicolaj0
7 Followers 387 Following
Shvm @final_const
165 Followers 1K Following Building dynamoDB on cloudflare, Senior staff engineer, chess addict
Cason Kervis @cscnk52
79 Followers 772 Following
Susan Smith @susansm225
13 Followers 103 Following
Will Zich @wzich
527 Followers 527 Following all of this has happened before, and all of this will happen again
victor @justme4023
10 Followers 249 Following
Saadi @saadimyftija
71 Followers 696 Following software engineer at @triggerdotdev, also building @shiftkeeper
Jacob Maynard @Jacob_A_Maynard
9 Followers 279 Following Masters student at SLU. Building full stack local-first apps on Cloudflare and SolidJS. Hire me
Jonas Tischer @JonasTischer
16 Followers 234 Following Software Engineer. Founder. Nomad🧑💻Currently building: https://t.co/g6qFvPCiSV
Omm @paupere2004
35 Followers 206 Following
Jens @RottiersJe72450
40 Followers 2K Following Tech, chess and sports enthusiast with a love for books
TheNeovimmer @TheNeovimmer
5 Followers 194 Following Full-time Open-Sourcerer. Focused on TypeScript, Python, Go, and JavaScript. I build web & mobile apps, CLI tools, npm packages, and AI tools.
jackalek @jackalek
113 Followers 5K Following
Jan Vlasak @Jan_cz
67 Followers 2K Following
George Notwell @animalfarmchina
328 Followers 8K Following
Valerio @valerio_sw
6 Followers 315 Following quantum enthusiast | lifting heavy, blasting techno, hacking code | Sharing my journey
M. G. @maxi_hhh
1 Followers 88 Following
Rob vs Everyone @REllerman
293 Followers 2K Following Tech Entrepreneur, Futurist and Destroyer of Bullshit
Matt Pocock @mattpocockuk
288K Followers 784 Following I teach devs for a living. Author of Total TypeScript and AI Hero. Ex-@vercel. Used to be a voice coach.
Theo - t3.gg @theo
343K Followers 4K Following Full time CEO @t3dotchat. Part time YouTuber, investor, and developer
Matteo Collina @matteocollina
57K Followers 4K Following @platformatic Co-Founder & CTO, @nodejs TSC Chair, Lead maintainer @fastifyjs, Board @OpenJSF, Conference Speaker, Ph.D. Past: @nearform. Views are my own.
Evan You @evanyou
311K Followers 2K Following Husband / Father of two / Founder @voidzerodev (acq. @cloudflare) / Creator @vuejs & @vite_js. Chinese-only alt: @yuxiyou
Ryan Carniato @RyanCarniato
56K Followers 484 Following got signals? @solid_js @Sentry 👫@RunningZ98577 🇨🇦
Devon Govett @devongovett
42K Followers 1K Following Creator of @parceljs. Engineer @adobe working on React Aria and React Spectrum.
Rich Harris @Rich_Harris
95K Followers 2K Following Cheese fan. I work on @sveltejs at @vercel. Mostly posting at https://t.co/1DNxt27Pks
Jake Archibald @jaffathecake
107K Followers 2K Following Developer of sorts at @firefox. No thought goes unpublished. He/him. Also jaffathecake on Mastodon, bsky, Threads etc.
Donny (강동윤) @kdy1dev
18K Followers 400 Following CEO of @delinoio / Creator of @swc_rs / Dev at @ZephyrCloudIO / Opinions are my own / Formerly @vercel, @deno_land
Jason Miller 🦊⚛ @_developit
63K Followers 2K Following Platform DX @Shopify. Created @preactjs. Do more with less. https://t.co/z1d6J24DlE @[email protected]
Malte Ubl @cramforce
48K Followers 904 Following Self-driving infrastructure @Vercel CTO. Immigrant 🇺🇸/🇩🇪/acc
Surma @DasSurma
38K Followers 1K Following DX & monorepo at @ShopifyEng Craving simplicity, finding it nowhere. Internetrovert 🏳️🌈 He/him.
Rob Palmer @robpalmer2
11K Followers 2K Following JavaScript Infrastructure & Tooling at Bloomberg. Co-chairing @TC39. Likely to tweet tech stuff about JS & software performance. Opinions are my own.
fks @FredKSchott
26K Followers 1K Following @astrodotbuild co-creator • Flue creator • ex-CEO of HTML
🇺🇦 Ingvar Stepa... @RReverser
8K Followers 1K Following OSS devtools, ex-Google Chrome, ex-Cloudflare, these days actively working in the WebAssembly land. Not here anymore, find me on Bluesky.
Marvin Hagemeister �... @marvinhagemeist
6K Followers 534 Following I love to make stuff simple and fast, in that order. Also created Preact DevTools + part of @preactjs team.
Andrew Sherman 🇺�... @andrii_sherman
9K Followers 724 Following https://t.co/tYgYwGz44Y | https://t.co/PJ4ZBIhfTS | building @DrizzleOrm | Ukrainian-only content @ssshrmn
Deutsche Bahn AG @DB_Presse
85K Followers 255 Following Neuigkeiten der DB für Medien u. interessierte Öffentlichkeit. Presse-Anfragen beantworten wir unter [email protected]. Impressum und Datenschutzhinweise:
StefanOnICE @detraxLIVE
4K Followers 225 Following 24 • Kennt keine Grenzen (außer DV/DS) • Lokführer bei DB Fernverkehr • private me: @prvtstefan • #kennichnichtsollsichficken
Splatty 🚈🇩🇪 @FemboyTrain
64K Followers 655 Following Pan | 26 | Femboy/catboy who drives trains! | Yes, we exist. | 🔞 🇩🇪 🇬🇧 | https://t.co/8AQ5qKSqQn | @NikiTheFox310 my beloved 💕 | @PrivateSplatty
Giacomo Cavalieri @giacomo_cava
789 Followers 193 Following I’m inactive here, find me on Bluesky @giacomocavalieri.me - love functional programming and learning new things ✨ @gleamlang core team member 💕 (he/him)
philhawksworth.dev �... @philhawksworth
10K Followers 830 Following DevRel at @deno_land. Previously @netlify, @rga. Mostly at https://t.co/yAY99bmjnI
Die rollende Zauberb�... @ZauberBaerin
4K Followers 141 Following Ich verzaubere alle, insbesondere @DerFrankyman. Male zauberhafte Bilder. Mache zauberhafte Ausflüge. Sprach- und körperbehindert. Rollstuhlfahrerin.
Frankyman @DerFrankyman
10K Followers 1K Following Unterwegs mit ♿️ @ZauberBaerin ⬅️ dort schreibt sie. Hier schreibe ich. Wir lieben das Bahnfahren. Barrieren nicht. Wir berichten hier und der Bahn.
Jo @ThisIsJoFrank
5K Followers 2K Following I am not here any more. Get me on BlueSky or Mastodon, same handle.
Brandon Vigliarolo @bviglia
904 Followers 449 Following US gov’t technology reporter at The Register. Keeping this account open so I can snoop on the crazy, but if you want to talk hit me up on Bluesky (at)bvig
Rui Ueyama @rui314
56K Followers 342 Following 米国Googleでソフトウェアエンジニア & スタンフォード大学コンピュータサイエンス修士 → 自分の会社 → 東京大学コンピュータ科学博士課程(現在) Creator of LLVM lld and the mold linkers
Titian Cernicova-Drag... @TitianCernicova
2K Followers 425 Following Typescript enthusiast (ask me about TS). I work at Bloomberg in JavaScript Infrastructure & Tooling . Opinions are my own.
Elias Van Deun @eliasvandeun
997 Followers 459 Following Capacity Coordinator Planning International Passenger Trains @Infrabel_nl - Night Train Enthusiast - he/him - Views are of course my own 🇧🇪 🇪🇺 - NL/FR/EN/DE
European Sleeper @EuropeanSlpr
18K Followers 99 Following Your Good Night Train to:📍 Brussels📍Amsterdam 📍Berlin 📍Prague 📍 Paris📍Milan 📍Hamburg🚆🌙 #europeansleeper #connectingeuropebynight
Ryan Dahl @rough__sea
42K Followers 378 Following cofounder of @deno_land, creator of @nodejs. often goes by ry.
tierney cyren @bitandbang
17K Followers 864 Following they/them. queer. poly. fashion. javascript. open source. principal developer advocate at @twilio. fricking disgrace. himbo. web2 boomer. adhd. demiboy. 1312.
JSR @jsr_io
1K Followers 6 Following The JavaScript Registry (JSR) is a module registry for TypeScript and ESM. Works with Node, Deno, browsers, and more. Free and open source.
petamoriken / 森建 @petamoriken
864 Followers 2K Following WebDev / ES2025 Float16Array ponyfill author / I love Deno 🦕 & Web Standards 🌐 / @kimamass backseat / Opinions are my own / TC39 会議まとめは Cosense(Scrapbox) へ!
Michele Riva @MicheleRivaCode
5K Followers 940 Following Independent Researcher - Philosophy, Neuroscience, and Graph Algorithms. Sometimes distributed systems too.
Giulio Zausa @giuliozausa
960 Followers 2K Following In a world of serious developers, I’m not too serious 😛 Software Engineer @buildwithflux 👨🏼💻 He/him 🏳️🌈
Felix Wotschofsky @wotschofsky
313 Followers 220 Following Engineering @ https://t.co/RpXZqvIlzT (YC S22) | CODE Alum Building https://t.co/n45Kv298IP & https://t.co/pRxCERUl8x on the side
Marco Ieni 🦀 @marcoieni
2K Followers 394 Following Infrastructure Eng @rust_foundation 🎙️ Podcast https://t.co/Tvh32Pcxkl 🦀 Automating Rust releases @release_plz_dev 🐘 @[email protected]
🦀 RustLab @rustlab_conf
5K Followers 103 Following The international conference about #RustLang in Italy. Organized by @develer (Florence, 2nd-4th November, 2025)
Lenny du Nord @Lenny_du_Nord
8K Followers 1K Following Papa. Bahnnerd. ÖPNV-Berater. In der Freizeit Schiedsrichter. 🚂 Ja, ich kann dir sagen, wie du da mit dem Zug hinkommst. 🚂 und mache gerne grüne Politik 🌻
Parsa @ParsaIsBack
200 Followers 155 Following Some guy | Full of random thoughts | Probably writing code | 🦀🏳️🌈
Adam Argyle @argyleink
59K Followers 2K Following @Shopify design-engineer; prior @GoogleChrome, @GoogleCloud, CSSWG, and CSS Podcast. Host on @whiskeywebfm, maker of @OpenProps, https://t.co/lb3SDxC6EC and more
Artem Kobzar 🇺🇦 @rage_monk
1K Followers 479 Following Leading Kotlin/JS at @JetBrains, @TC39 Delegate
ioana 👩💻🦊... @ioana_cis
4K Followers 2K Following Engineering #Manager w/ a flavor of Community & DevRel, working @ @Interledger #Mozillian #Wanderlust , #OpenSource, #Feminist , #environmentalist she/her
Matan Kushner @matchai
1K Followers 2K Following he/him ⋅ ▲ Engineer ⋅ Globetrotter, OSS maintainer, insatiably curious 🦋 https://t.co/HLXmiI2FuG
shelley @codebytere
8K Followers 371 Following core eng @electronjs. way too online. often caffeinated. cruciverbalist. she/her.
Carolyn Stransky Vohr @carolstran
10K Followers 328 Following 🍑🔌 Journalist covering intimacy and emerging tech 👩🏼💻🛰️ Software engineer by trade 🗞️ Carnal knowledge @theberlinermag, prev @futureofsex (she/her)
Sathya Gunasekaran @_gsathya
7K Followers 651 Following building 👀; formerly: @reactjs @meta, @v8js @google
React Paris Conf' -by... @BeJS_
2K Followers 5K Following https://t.co/Ntp1Rb9YLu 🦋 https://t.co/YtYOYXiU0I
Tailscale @Tailscale
32K Followers 168 Following Simple, secure networks for teams of any scale. Built on WireGuard.
Ives van Hoorne @CompuIves
26K Followers 2K Following Friends call me Flip! Working on @biscuit_so Previously @codesandbox (acquired by @togethercompute). I like biscuits 🍪🏳️🌈
Will Newby #BLM @wnewby
108 Followers 479 Following Website Keeper Upper/People Helper, p: he/they. Genderqueer. Poly.
Jordan Harband @ljharb
9K Followers 2K Following software engineer/nerd/teacher/will try anything once; surgeon with git rebase. @TC39 ex @Coinbase/@Airbnb/@Twitter/@MobBase. Fav punctuation ⸮, scent petrichor






























