Surma
@surma.dev
DX & monorepo at Shopify.
Craving simplicity, finding it nowhere.
Internetrovert 🏳️🌈 He/him.
Craving simplicity, finding it nowhere.
Internetrovert 🏳️🌈 He/him.
Pinned
Surma
@surma.dev
· Jun 17
LangGraph for complex workflows — surma.dev
I may be late to the party, but LangGraph lets you build complex workflow architectures and codify them as powerful automations. Also LLMs, if you want. But you don’t have to!
surma.dev
📝 First blog in a long time!
I always like “flow-based” programming, and it’s a very powerful paradigm. LangGraph lets you codify complex workflows as graphs, and also integrates really well with LangChain, if your workflow is LLM-driven.
surma.dev/things/langg...
I always like “flow-based” programming, and it’s a very powerful paradigm. LangGraph lets you codify complex workflows as graphs, and also integrates really well with LangChain, if your workflow is LLM-driven.
surma.dev/things/langg...
What a flex :D
Fwiw, it was similarly easy on the spec side. The algorithm was fully spec’d, just not attached to any globals. And after the spec was written, it took 3 years or something for browsers to go “well I suppose this is kinda useful?” 😂
Fwiw, it was similarly easy on the spec side. The algorithm was fully spec’d, just not attached to any globals. And after the spec was written, it took 3 years or something for browsers to go “well I suppose this is kinda useful?” 😂
October 23, 2025 at 11:56 AM
What a flex :D
Fwiw, it was similarly easy on the spec side. The algorithm was fully spec’d, just not attached to any globals. And after the spec was written, it took 3 years or something for browsers to go “well I suppose this is kinda useful?” 😂
Fwiw, it was similarly easy on the spec side. The algorithm was fully spec’d, just not attached to any globals. And after the spec was written, it took 3 years or something for browsers to go “well I suppose this is kinda useful?” 😂
Reposted by Surma
do you like geology puns and have an unhealthy obsession with package management? 🌋📦
we’re building a nix-based monorepo build system (in Rust!) at Shopify and we’re hiring.
global, remote, high-autonomy. DMs open.
www.shopify.com/careers/soft...
we’re building a nix-based monorepo build system (in Rust!) at Shopify and we’re hiring.
global, remote, high-autonomy. DMs open.
www.shopify.com/careers/soft...
Software Engineer - Monorepo Systems (Rust & Nix)
ARE YOU READY? Join the fully-remote rocketship. Find your next quest to make commerce better for everyone. Unlimited growth. Crafters and hard workers only. Apply within.
www.shopify.com
October 16, 2025 at 2:56 PM
do you like geology puns and have an unhealthy obsession with package management? 🌋📦
we’re building a nix-based monorepo build system (in Rust!) at Shopify and we’re hiring.
global, remote, high-autonomy. DMs open.
www.shopify.com/careers/soft...
we’re building a nix-based monorepo build system (in Rust!) at Shopify and we’re hiring.
global, remote, high-autonomy. DMs open.
www.shopify.com/careers/soft...
I have been working on the nix & Rust codebase that builds Shopify’s monorepo, and there’s so much left to do that we need help.
If you are interested, apply here to join us! DM me if you have questions!
www.shopify.com/careers/soft...
If you are interested, apply here to join us! DM me if you have questions!
www.shopify.com/careers/soft...
Software Engineer - Monorepo Systems (Rust & Nix)
ARE YOU READY? Join the fully-remote rocketship. Find your next quest to make commerce better for everyone. Unlimited growth. Crafters and hard workers only. Apply within.
www.shopify.com
October 16, 2025 at 4:20 PM
I have been working on the nix & Rust codebase that builds Shopify’s monorepo, and there’s so much left to do that we need help.
If you are interested, apply here to join us! DM me if you have questions!
www.shopify.com/careers/soft...
If you are interested, apply here to join us! DM me if you have questions!
www.shopify.com/careers/soft...
Reposted by Surma
I dug into progressive image rendering and found a bunch of common assumptions aren't quite true.
➡️ JPEG & WebP progressive-renders worse in Safari
➡️ AVIF _does_ support progressive
➡️ But JPEG XL in Safari doesn't
➡️ JPEG XL decodes much slower than AVIF
⬇️ and more
jakearchibald.com/2025/present...
➡️ JPEG & WebP progressive-renders worse in Safari
➡️ AVIF _does_ support progressive
➡️ But JPEG XL in Safari doesn't
➡️ JPEG XL decodes much slower than AVIF
⬇️ and more
jakearchibald.com/2025/present...
The present and potential future of progressive image rendering
Exploring progressive image rendering across JPEG, PNG, WebP, AVIF, and JPEG XL.
jakearchibald.com
October 16, 2025 at 10:16 AM
I dug into progressive image rendering and found a bunch of common assumptions aren't quite true.
➡️ JPEG & WebP progressive-renders worse in Safari
➡️ AVIF _does_ support progressive
➡️ But JPEG XL in Safari doesn't
➡️ JPEG XL decodes much slower than AVIF
⬇️ and more
jakearchibald.com/2025/present...
➡️ JPEG & WebP progressive-renders worse in Safari
➡️ AVIF _does_ support progressive
➡️ But JPEG XL in Safari doesn't
➡️ JPEG XL decodes much slower than AVIF
⬇️ and more
jakearchibald.com/2025/present...
It can handle 400 megapixel manga like no other
October 7, 2025 at 4:42 PM
It can handle 400 megapixel manga like no other
This is so perfect for you. Can't wait to see you crush it.
September 13, 2025 at 8:38 AM
This is so perfect for you. Can't wait to see you crush it.
Alternativprojektsinterressantheitsverstärkung
September 10, 2025 at 7:21 AM
Alternativprojektsinterressantheitsverstärkung
`enum` yes, `const enum` no. Gotta love TS sometimes :3
September 9, 2025 at 11:04 AM
`enum` yes, `const enum` no. Gotta love TS sometimes :3
You know your JS13k submission is going well when you have to resort to `btoa` and other seemingly stupid hacks to get below the file size limit.
September 9, 2025 at 9:45 AM
You know your JS13k submission is going well when you have to resort to `btoa` and other seemingly stupid hacks to get below the file size limit.
Reposted by Surma
if this type of thing makes you say “this is cursed af, where do i sign up” DM me, we’re looking for some teammates
Nix friends: How terrible is this idea?
I added `builtins.runWasm` to nix, allowing you to call out to Wasm. The Wasm is reset every time, so the functions remain pure. This gives you a (performant?) escape hatch for things that Nix is missing. E.g parsing YAML (here: via Rust)
I added `builtins.runWasm` to nix, allowing you to call out to Wasm. The Wasm is reset every time, so the functions remain pure. This gives you a (performant?) escape hatch for things that Nix is missing. E.g parsing YAML (here: via Rust)
September 6, 2025 at 3:37 PM
if this type of thing makes you say “this is cursed af, where do i sign up” DM me, we’re looking for some teammates
For now, I established the convention the the parameters must be pointers to byte arrays containing UTF-8 encoded JSON strings. I think that’s actually quite feasible.
But the real deal would be to use the Wasm component model imo
But the real deal would be to use the Wasm component model imo
September 4, 2025 at 4:03 PM
For now, I established the convention the the parameters must be pointers to byte arrays containing UTF-8 encoded JSON strings. I think that’s actually quite feasible.
But the real deal would be to use the Wasm component model imo
But the real deal would be to use the Wasm component model imo
Nix friends: How terrible is this idea?
I added `builtins.runWasm` to nix, allowing you to call out to Wasm. The Wasm is reset every time, so the functions remain pure. This gives you a (performant?) escape hatch for things that Nix is missing. E.g parsing YAML (here: via Rust)
I added `builtins.runWasm` to nix, allowing you to call out to Wasm. The Wasm is reset every time, so the functions remain pure. This gives you a (performant?) escape hatch for things that Nix is missing. E.g parsing YAML (here: via Rust)
September 4, 2025 at 2:44 PM
Nix friends: How terrible is this idea?
I added `builtins.runWasm` to nix, allowing you to call out to Wasm. The Wasm is reset every time, so the functions remain pure. This gives you a (performant?) escape hatch for things that Nix is missing. E.g parsing YAML (here: via Rust)
I added `builtins.runWasm` to nix, allowing you to call out to Wasm. The Wasm is reset every time, so the functions remain pure. This gives you a (performant?) escape hatch for things that Nix is missing. E.g parsing YAML (here: via Rust)
Reposted by Surma
📝 Making XML human-readable without XSLT.
Turns out, JavaScript works pretty well!
jakearchibald.com/2025/making-...
Turns out, JavaScript works pretty well!
jakearchibald.com/2025/making-...
Making XML human-readable without XSLT
JavaScript is right there.
jakearchibald.com
September 2, 2025 at 5:23 PM
📝 Making XML human-readable without XSLT.
Turns out, JavaScript works pretty well!
jakearchibald.com/2025/making-...
Turns out, JavaScript works pretty well!
jakearchibald.com/2025/making-...
I guess I grouped all kinds of implementation bugs into the "interoperability" category. Probably not super fair to folks working on interop 😅
August 27, 2025 at 4:38 PM
I guess I grouped all kinds of implementation bugs into the "interoperability" category. Probably not super fair to folks working on interop 😅
I had to learn it for my UK citizenship test. I didn't do very well, just barely enough to pass.
August 27, 2025 at 4:37 PM
I had to learn it for my UK citizenship test. I didn't do very well, just barely enough to pass.
I mean, something working in one browser and not the other is a failure of either interoperability or specification.
August 27, 2025 at 4:33 PM
I mean, something working in one browser and not the other is a failure of either interoperability or specification.
The thing is that Firefox on iOS is not even Firefox. But whenever I see multiple rAF's nested, especially with a setTimeout sprinkled in, I gotta summon Jake.
August 24, 2025 at 9:35 AM
The thing is that Firefox on iOS is not even Firefox. But whenever I see multiple rAF's nested, especially with a setTimeout sprinkled in, I gotta summon Jake.
Reposted by Surma
Starting my new role on Monday. Could be anywhere.
July 31, 2025 at 12:57 PM
Starting my new role on Monday. Could be anywhere.
Reposted by Surma
ECMAScript excitement 😉
Congrats to @bakkot.com on advancing UInt8Array ↔️ Base64/Hex to Stage 4 at TC39 this week 🎉
UInt8Array.prototype.
toBase64
toHex
UInt8Array.
fromBase64
fromHex
It lets you convert directly between binary data and Base64/Hex strings 👍
Congrats to @bakkot.com on advancing UInt8Array ↔️ Base64/Hex to Stage 4 at TC39 this week 🎉
UInt8Array.prototype.
toBase64
toHex
UInt8Array.
fromBase64
fromHex
It lets you convert directly between binary data and Base64/Hex strings 👍
![let arr = new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100]);
console.log(arr.toBase64());
// 'SGVsbG8gV29ybGQ='
console.log(arr.toHex());
// '48656c6c6f20576f726c64'
let string = 'SGVsbG8gV29ybGQ=';
console.log(Uint8Array.fromBase64(string));
// Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100])
string = '48656c6c6f20576f726c64';
console.log(Uint8Array.fromHex(string));
// Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100])](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:w227epg3attqnssfdkx6ex6a/bafkreihrq4aegp6a5gtlqnkcox5w6eblthyvnz66w6gf53mvuh4fsr3254@jpeg)
July 30, 2025 at 6:56 AM
ECMAScript excitement 😉
Congrats to @bakkot.com on advancing UInt8Array ↔️ Base64/Hex to Stage 4 at TC39 this week 🎉
UInt8Array.prototype.
toBase64
toHex
UInt8Array.
fromBase64
fromHex
It lets you convert directly between binary data and Base64/Hex strings 👍
Congrats to @bakkot.com on advancing UInt8Array ↔️ Base64/Hex to Stage 4 at TC39 this week 🎉
UInt8Array.prototype.
toBase64
toHex
UInt8Array.
fromBase64
fromHex
It lets you convert directly between binary data and Base64/Hex strings 👍