Author | Lightnews

Andrew Prifer

Andrew Prifer

@prif.bsky.social

98 followers 69 following 66 posts

UI, UX, 3D things. Graphics, UI & Interaction Design @ Luma AI. Prev: Theatre.js, Spline https://bento.me/andrewprifer

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Andrew Prifer @prif.bsky.social · 54m

The quickest hashing library for react native by @pioner_dev

The thing I'm building makes heavy use of caching at every step and this has been invaluable for calculating cache keys from stuff that’d be too large to key by directly.

github.com/pioner92/re...

GitHub - pioner92/react-native-xxhash: 💪 A high-performance React Native library for generating xxHash hashes using C++ and JSI

💪 A high-performance React Native library for generating xxHash hashes using C++ and JSI - pioner92/react-native-xxhash

Andrew Prifer @prif.bsky.social · 1h

If Lovable can one-shot your project, it probably isn't worth doing.

Andrew Prifer @prif.bsky.social · 5h

Lord, I see what You're doing for others; grant me the fortune of a half-billion exit right before OpenAI kills my product, amen.

Andrew Prifer @prif.bsky.social · 1d

It saves me an enormous amount of time and brain cycles, but what it doesn't save me from is having to do the thinking.

I feel like the folks who claim it does, are the same ones who previously thought visual programming would be the death of CS degrees.

Andrew Prifer @prif.bsky.social · 1d

Not because it is dumb, but because it doesn't have a clue what I need without specific instructions. Whether I'm reviewing code it writes, or telling it what to do, I still have to do all the work aside from typing out the code.

Andrew Prifer @prif.bsky.social · 1d

As far as real world utility goes, coding models are a really smart typist with a CS degree. It's hard for me to agree with the crowd declaring the death of coding in <insert number of months>. Even today if I am any less specific in my prompts than this, the llm veers off in undesirable directions.

Andrew Prifer @prif.bsky.social · 1d

Say, if you're a small startup and you'd normally pay 10k a month to OpenAI (assuming a couple ten thousand users and normal usage), now you're also paying 500 / month to OpenRouter, which is larger than your Slack and Cursor bills combined.

Andrew Prifer @prif.bsky.social · 1d

OpenRouter charging 5% is crazy, because it prices manually wiring up your routing at 1/20 of the value AI models provide. Absurd for something that’s at most 400 loc, and then you'd even get nice things like sorting by historical latency as measured from your backend.

Andrew Prifer @prif.bsky.social · 2d

When I said I wished we moved away from chat boxes as a means to interact with AI, I didn't mean I want no interaction at all.
x.com/AndrewPrife...

Andrew Prifer @prif.bsky.social · 2d

If only someone built the AI infrastructure for the agentic era. Is there anyone already doing this? Anyone at all?

Andrew Prifer @prif.bsky.social · 5d

Learning about Lisp and I keep seeing the word sexpression everywhere. Man the 60's were wild.

Andrew Prifer @prif.bsky.social · 5d

it's not looking good bros

Andrew Prifer @prif.bsky.social · 6d

Remember when ride-sharing and scooters were all the rage, and then suddenly price hikes and companies folding left and right? It's coming.

"Hear me out, Cursor, but free" Stfu.

Andrew Prifer @prif.bsky.social · 6d

It's good for investors because there's no such thing as bootstrapping anymore, and it is good for status-chasers because they can wave around their $10 million pre-seed check as if it means anything. Bad for everyone else.

Bad for users, too.

Andrew Prifer @prif.bsky.social · 6d

This extreme subsidizing of users and selling things at a loss is the wrong axis to compete on imo and I can't wait for the bubble to burst. I know game theory won't let us have it any other way, but man is it annoying.

Andrew Prifer @prif.bsky.social · 6d

my primary source of anxiety

Andrew Prifer @prif.bsky.social · 8d

This is still one of the most audacious things I’ve ever put in a real-world app, but somehow what I’m building now feels a 1000x cooler. The future is bright.
x.com/andrewprife...

Andrew Prifer @prif.bsky.social · 9d

Yes, I just deployed my backend on Fly, AMA.

Andrew Prifer @prif.bsky.social · 9d

The hard thing about microVM-based services like @flydotio is that you need to know Docker.

The easy thing about microVM-based services is that you only need to know Docker.
x.com/AndrewPrife...

Andrew Prifer @prif.bsky.social · 11d

bro…

Andrew Prifer @prif.bsky.social · 12d

Link to the repo. There's a live demo in there too.
github.com/AndrewPrife...

GitHub - AndrewPrifer/progressive-blur: Drop-in progressive (gradient) backdrop blur for React

Drop-in progressive (gradient) backdrop blur for React - AndrewPrifer/progressive-blur

Andrew Prifer @prif.bsky.social · 12d

My progressive blur library has weirdly picked up steam lately. If we can reach 200 stars I'll make a React Native version.

Andrew Prifer @prif.bsky.social · 13d

Solution: keep track of pending promises, and at each step, race the ones that haven't settled yet.

Andrew Prifer @prif.bsky.social · 13d

Write a generator which takes an array of promises and yields each promise as soon as it resolves, only when it resolves.

This isn't as trivial as simply iterating through the promises and yielding them one by one. The slowest promise could delay all the others!

Solution below. ⬇️

Andrew Prifer @prif.bsky.social · 13d

Async generators are becoming the standard way to create streaming outputs (AI SDK tool calls, TanStack Start). Here's a fun challenge you WILL need to solve at some point, and which surprisingly has no builtin equivalent.