🇺🇦 Ingvar Stepanyan
@rreverser.com
Sr. Principal Engineer at Cloudflare by day, WebAssembly consultant by night.
You might also know me from my work on OSS tools and libraries (JS / Wasm / Rust) or Wasm DevRel at Google Chrome
📝 https://rreverser.com/
📷 https://instagram.com/rreverser
You might also know me from my work on OSS tools and libraries (JS / Wasm / Rust) or Wasm DevRel at Google Chrome
📝 https://rreverser.com/
📷 https://instagram.com/rreverser
Pinned
🇺🇦 Ingvar Stepanyan
@rreverser.com
· Jan 9
> walking through marrakech at night
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash
Reposted by 🇺🇦 Ingvar Stepanyan
Ukraine's SBU just released a massive compilation of its medium-range attack drones destroying Russian air defense systems.
The unit reportedly did over $4 billion in damage to Russian radars and SAM systems last year.
The unit reportedly did over $4 billion in damage to Russian radars and SAM systems last year.
January 19, 2026 at 8:24 AM
Ukraine's SBU just released a massive compilation of its medium-range attack drones destroying Russian air defense systems.
The unit reportedly did over $4 billion in damage to Russian radars and SAM systems last year.
The unit reportedly did over $4 billion in damage to Russian radars and SAM systems last year.
Reposted by 🇺🇦 Ingvar Stepanyan
mad king moment
from the PBS Newshour correspondent
from the PBS Newshour correspondent
![NEW: @potus letter to @jonasgahrstore links @NobelPrize to Greenland, reiterates threats, and is forwarded by the NSC staff to multiple European ambassadors in Washington. I obtained the text from multiple officials:
Dear Ambassador:
President Trump has asked that the following message, shared with Prime Minister Jonas Gahr Støre, be forwarded to your [named head of government/state]
“Dear Jonas: Considering your Country decided not to give me the Nobel Peace Prize for having stopped 8 Wars PLUS, I no longer feel an obligation to think purely of Peace, although it will always be predominant, but can now think about what is good and proper for the United States of America. Denmark cannot protect that land from Russia or China, and why do they have a “right of ownership” anyway? There are no written documents, it’s only that a boat landed there hundreds of years ago, but we had boats landing there, also. I have done more for NATO than any other person since its founding, and now, NATO should do something for the United States. The World is not secure unless we have Complete and Total Control of Greenland. Thank you! President DJT”](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:hbpefio3f5csc44msmbgioxz/bafkreie7itpptx3xbxhpsnlaqmwk752h7pcrion5ija2apksljtax2adx4@jpeg)
January 19, 2026 at 5:09 AM
mad king moment
from the PBS Newshour correspondent
from the PBS Newshour correspondent
Huh actually never considered this. www.theverge.com/ai-artificia...
January 18, 2026 at 12:35 AM
Huh actually never considered this. www.theverge.com/ai-artificia...
On the 4th year of "how the hell is any of this real"...
Trump says 8 European countries will face 10% tariff for opposing US control of Greenland
President Donald Trump says he'll impose a 10% import tax starting in February on goods from eight European nations because of their opposition to American control of Greenland.
apnews.com
January 18, 2026 at 12:05 AM
On the 4th year of "how the hell is any of this real"...
Reposted by 🇺🇦 Ingvar Stepanyan
Reposted by 🇺🇦 Ingvar Stepanyan
The Astro Technology Company team — the creators of the Astro web framework — is joining Cloudflare. We’re doubling down on making Astro the best framework for content-driven websites. https://cfl.re/4qlJCd3
Astro is joining Cloudflare
By joining forces with the Astro team, we are doubling down on making Astro the best framework for content-driven websites for many years to come.
blog.cloudflare.com
January 16, 2026 at 2:05 PM
The Astro Technology Company team — the creators of the Astro web framework — is joining Cloudflare. We’re doubling down on making Astro the best framework for content-driven websites. https://cfl.re/4qlJCd3
Write a sad story in one line of Rust.
> bail!("found children without a parent");
> bail!("found children without a parent");
January 15, 2026 at 9:16 PM
Write a sad story in one line of Rust.
> bail!("found children without a parent");
> bail!("found children without a parent");
Came up with a cat proverb today.
January 15, 2026 at 1:06 AM
Came up with a cat proverb today.
"Copilot mistake" 😂
UK police have blamed Microsoft Copilot for an intelligence mistake. Microsoft's Copilot AI assistant made up a non-existent football match and British police included the mistake in an intelligence report. Yikes. Details on the Copilot mistake here👇 www.theverge.com/news/861668/...
UK police blame Microsoft Copilot for intelligence mistake
Copilot invented a football match that never happened
www.theverge.com
January 14, 2026 at 1:03 PM
"Copilot mistake" 😂
All these years writing Rust and it's the first time I had to write "&(mut slice)" as opposed to "&mut slice" 🤯
January 12, 2026 at 10:45 PM
All these years writing Rust and it's the first time I had to write "&(mut slice)" as opposed to "&mut slice" 🤯
Reposted by 🇺🇦 Ingvar Stepanyan
Tonight in Kyiv, it’s −13°C. Some parts of the city have been without electricity for more than 60 hours after russian attacks.
January 11, 2026 at 10:58 PM
Tonight in Kyiv, it’s −13°C. Some parts of the city have been without electricity for more than 60 hours after russian attacks.
Reposted by 🇺🇦 Ingvar Stepanyan
Reposted by 🇺🇦 Ingvar Stepanyan
The latest Google Gemini Pro is now my daily AI, they are seriously crushing it now, despite seeming like a lame duck that missed the boat for a long time. It is seriously good esp multi-modal.
Using LLMs to write content is lame, but it hits a LOT of insane curveball questions I throw at it now.
Using LLMs to write content is lame, but it hits a LOT of insane curveball questions I throw at it now.
January 10, 2026 at 10:19 PM
The latest Google Gemini Pro is now my daily AI, they are seriously crushing it now, despite seeming like a lame duck that missed the boat for a long time. It is seriously good esp multi-modal.
Using LLMs to write content is lame, but it hits a LOT of insane curveball questions I throw at it now.
Using LLMs to write content is lame, but it hits a LOT of insane curveball questions I throw at it now.
If I have to write one more zero-copy parser/serializer from scratch, I might have to build yet another general library.
I think I finally got the design just right across the last 3 parsers, and it's sufficiently different from what the existing libraries permit... but damn that's a lot of work.
I think I finally got the design just right across the last 3 parsers, and it's sufficiently different from what the existing libraries permit... but damn that's a lot of work.
January 10, 2026 at 1:04 AM
If I have to write one more zero-copy parser/serializer from scratch, I might have to build yet another general library.
I think I finally got the design just right across the last 3 parsers, and it's sufficiently different from what the existing libraries permit... but damn that's a lot of work.
I think I finally got the design just right across the last 3 parsers, and it's sufficiently different from what the existing libraries permit... but damn that's a lot of work.
You know you're writing Good Code ™️ when you're just resigned to typing `&******x` and removing asterisks until you get to the first working level.
January 9, 2026 at 3:39 PM
You know you're writing Good Code ™️ when you're just resigned to typing `&******x` and removing asterisks until you get to the first working level.
Reposted by 🇺🇦 Ingvar Stepanyan
actually fucking funny. @zkat.tech please just block me.
January 9, 2026 at 6:00 AM
actually fucking funny. @zkat.tech please just block me.
Examples like speech recognition sending your voice to the cloud are pretty interesting to think about.
For example, do websites have to declare where voice is uploaded in their privacy policy, or is the responsibility for that data on the browser vendor?
For example, do websites have to declare where voice is uploaded in their privacy policy, or is the responsibility for that data on the browser vendor?
Not All Browser APIs Are "Web" APIs
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
Not All Browser APIs Are "Web" APIs | Polypane
When we talk about "the web platform", we often treat it as a unified, standards-based system: browsers implement features from the same specifications, even if…
polypane.app
January 9, 2026 at 12:03 PM
Examples like speech recognition sending your voice to the cloud are pretty interesting to think about.
For example, do websites have to declare where voice is uploaded in their privacy policy, or is the responsibility for that data on the browser vendor?
For example, do websites have to declare where voice is uploaded in their privacy policy, or is the responsibility for that data on the browser vendor?
Stale bots are still annoying in 2026.
If you are adding a stale bot to your OSS repo, maybe at least differentiate between "waiting for more information from the reporter" and "waiting on maintainer", or don't set it to just 30 days? 😬
If you are adding a stale bot to your OSS repo, maybe at least differentiate between "waiting for more information from the reporter" and "waiting on maintainer", or don't set it to just 30 days? 😬
January 8, 2026 at 11:13 PM
Stale bots are still annoying in 2026.
If you are adding a stale bot to your OSS repo, maybe at least differentiate between "waiting for more information from the reporter" and "waiting on maintainer", or don't set it to just 30 days? 😬
If you are adding a stale bot to your OSS repo, maybe at least differentiate between "waiting for more information from the reporter" and "waiting on maintainer", or don't set it to just 30 days? 😬
Reposted by 🇺🇦 Ingvar Stepanyan
2018: “Tumblr has been removed from Apple's app store because it let some users post images of child sexual abuse.”
January 8, 2026 at 10:34 PM
2018: “Tumblr has been removed from Apple's app store because it let some users post images of child sexual abuse.”
Reposted by 🇺🇦 Ingvar Stepanyan
TIL: you can run `npm install lodash-es` to get the Spanish version of the library. 🇪🇸
January 7, 2026 at 9:04 AM
TIL: you can run `npm install lodash-es` to get the Spanish version of the library. 🇪🇸
Reposted by 🇺🇦 Ingvar Stepanyan
While tailwind usage is up, website visits are down in the age of LLMs and they've had to fire 75% of the eng team
Tailwind is one of the most successful projects in the space, this is a bit sad
Tailwind is one of the most successful projects in the space, this is a bit sad
feat: add llms.txt endpoint for LLM-optimized documentation by quantizor · Pull Request #2388 · tailwindlabs/tailwindcss.com
Add /llms.txt endpoint that serves a concatenated, text-only version of all Tailwind CSS documentation pages optimized for Large Language Model consumption.
Extract text from MDX files, removing J...
github.com
January 7, 2026 at 7:53 PM
While tailwind usage is up, website visits are down in the age of LLMs and they've had to fire 75% of the eng team
Tailwind is one of the most successful projects in the space, this is a bit sad
Tailwind is one of the most successful projects in the space, this is a bit sad
That's... quite a list.
January 8, 2026 at 2:40 AM
That's... quite a list.
Reposted by 🇺🇦 Ingvar Stepanyan
Ukrainian refugees, drawing on their experience of living through blackouts, opened an emergency supply point in a Berlin district, where a blackout has lasted for 4 days following arson attacks on power infrastructure.
People can warm up, charge their devices, drink hot tea, and cook food there🧵
People can warm up, charge their devices, drink hot tea, and cook food there🧵
January 6, 2026 at 3:14 PM
Ukrainian refugees, drawing on their experience of living through blackouts, opened an emergency supply point in a Berlin district, where a blackout has lasted for 4 days following arson attacks on power infrastructure.
People can warm up, charge their devices, drink hot tea, and cook food there🧵
People can warm up, charge their devices, drink hot tea, and cook food there🧵
Ah, BlueSky figured out my favourite kind of feeds: devs yelling at the cloud, cats in snow, and more devs yelling at the cloud 🥰 @remysharp.com @patak.dev @jakearchibald.com
January 7, 2026 at 11:39 AM
Ah, BlueSky figured out my favourite kind of feeds: devs yelling at the cloud, cats in snow, and more devs yelling at the cloud 🥰 @remysharp.com @patak.dev @jakearchibald.com