is there a piece of mac software buggier than spotlight? you have one job

I'm building my own RSC web framework, so I did a deep dive into RSC rendering pipeline performance. What I found was a roughly 10x performance hit compared to the classical `renderToString`. Some cost is to be expected – but this leaves a lot of room for perf gains. github.com/facebook/rea...

I am releasing a new library called delusion.js

everyone's doing forms in react wrong and no one understands why the react team fixed it but no one is taking advantage will have a public solve soon.

NIH-truthers are feasting with AI. be wary

The flawed premise here is “great men” - implying being a conqueror is more ideal than being an empath and a neighbor. Fuck that

We are entering the world of bespoke software. It’s kind of making me super anxious, but the only solve is to touch grass and keep my head down on my work.

ok hear me out, '24' but it's called '12' and it takes place in an emergency room at a hospital

or to be less absolute, it might be "real", but you don't yet fully understand it

if you are running largely self-directed parallel work streams with AI it's often a hint that your work isn't well spec'd or defined. I do think there's a world in which parallel streams are useful, but the cheat code to AI coding involves _deeply_ speccing your work before running an agent.

kind of insane that agent skills largely negate codemods

When I was young I way over-estimated how much having an existing audience matters. Marketing and messaging does, project quality does, but an audience is rarely the difference maker. Just ask any creative who has one. Shit falls flat all the time.

I think a lot of people underestimate the efficacy of working through ideas in-process, rather than at the outset. If you trust your craft, the good stuff is in the process–having all of the answers at the beginning is inherently flawed. Sometimes good ideas don't reveal themselves right away.

“There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies.” I never really understood compsci until I got to college and began taking courses.

building something that feels rather special. timber

phish 3.0 is now 17 years old, the same age as 1.0 cc: @cdirksen.bsky.social

back in my day we wrote code uphill both ways

One thing that I got wrong about marketing was: I felt if I published a narrative, I could do it just once. It turns out you have to reinforce that messaging over and over and over again. This seems obvious in hindsight but I was naive. Now I know why businesses are so annoying.

there's some cruel irony in NEXT.js not having middleware but I wanna call next()

this is probably worthy of a blog post. but it's so hard to explain because the old heads (php, ruby) just say "no duh - this is how we always did" not understanding compositional client components and the new heads just say "vercel is trying to sell servers, this is so complex"

Data fetching in RSC…

here's a demo of my secure enclave/icloud sync plc rotation key manager

This posts via PDS session, not keys. But still nice to test

the biggest piece of undiscussed tension in my family is that every day one of us solves the wordle on our shared NYT account and we never talk about it

built an atproto terminal ui for setting up alternative plc rotation keys. there are two types of keys. hardware-based: no sync software-based: synced via icloud is anyone interested in this? I could package it up and release it, though it needs a lot of UX work. tangled.org/saewitz.com/...

Pro tip: do not accidentally make 270 million requests to R2

lol - remember when they were a non profit…

Tomorrow is the best day of the year for any SaaS business owners. Happy Feb 28th

AI has a tendency to write tests _after_ implementation, but I've had a lot of success asking AI to write tests first that *FAIL* with the current functionality - then prompting it to implement them to pass. This is how we should be doing TDD anyway, but it's even better for the AI.

Have wanted to make this happen for over a decade. We finally got it done!

when you deploy a change but forget to add resource limits and queue throttling 🫣

at what point does Github add "prompt requests"? in which PRs are just prompts for the developers to manipulate themselves. maybe it comes with reference output artifacts, but the actual code that gets merged would be re-prompted by the maintainers themselves.

it's beginning: github.com/tldraw/tldra...

New post! Tests Are The New Moat saewitz.com/tests-are-th...

Tests are the new moat?

other than one legacy item running on a free tier (SQS), I have finally migrated every cost off of AWS. phew. Been paying AWS something for the last 15 years. I had gotten the bill down to ~$30/month which was fine, but happy to get rid of it all now. progress

did anyone on the react or next team ever look into streaming via declarative shadow DOM[0] you can stream html and replace content out of order without javascript[1] This could in theory make suspense/streaming work without any js [0] ryanjc.com/blog/go-stre... [1] go-streaming-html-ooo.fly.dev

they're barely invited

👀

not doing high-fives anymore. only "eye"-fives from me here on out

oh no this is embarrassing, even for you, amazon

Turning Your Robot Vacuum Into a Mesh VPN saewitz.com/turning-your...

I was running into an issue when abusing react.cache - it turns out if you await a Promise.resolve in a server component, it will pause execution (maybe just move to the bottom of the callstack?) until any parallel sync trees finish. This actually works.. feels like a classic setTimeout(..., 1) hack

stripe takes 8.3% of my revenue every year. pretty brutal extraction for a solo bootstrapped business. it's down from the 9% it was a few years ago though. this is largely a function of raising my prices ever so slightly.

Spent an hour building (prompting) a fun little auto-layouting ASCII diagram library inspired by turbopuffer, planetscale, and oxide. Maybe you'll find it useful github.com/switz/box-of...

Cooked me tbh

my thread on bootstrapping

eslint breaks way too often. the flat config was a mess of migration. now 10 breaks everything again. the team investment should be done in major downstream plugins _before_ releasing major upgrades. it would take a few weeks of work for a much smoother migration.

weird timing but just noticed eslint 10 was released 3 minutes ago www.npmjs.com/package/esli...

claude just told me that I'm a co-founder and CPO of anthropic. i'll take my money now please