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TypeScript

Optional static type-checking for JavaScript.

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I Wrote a JSON Parser From Scratch

I Wrote a JSON Parser From Scratch

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5 min read
How to Track Stripe API Changes Automatically (Before They Break Your Code)

How to Track Stripe API Changes Automatically (Before They Break Your Code)

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3 min read
I Built a Spell Checker to Watch an Algorithm Think

I Built a Spell Checker to Watch an Algorithm Think

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4 min read
Assert LLM output in the test runner you already use

Assert LLM output in the test runner you already use

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5 min read
Build sticky percentage rollouts with MurmurHash3 in TypeScript

Build sticky percentage rollouts with MurmurHash3 in TypeScript

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11 min read
Bridging RxJS BehaviorSubject and React with useSyncExternalStore

Bridging RxJS BehaviorSubject and React with useSyncExternalStore

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5 min read
Building Production Backends with NestJS

Building Production Backends with NestJS

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1 min read
One call, from fetch to a validated object — streaming structured output without the plumbing

One call, from fetch to a validated object — streaming structured output without the plumbing

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4 min read
Your AI Coding Agent Needs a Dependency Graph, Not Just a Repository

Your AI Coding Agent Needs a Dependency Graph, Not Just a Repository

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5 min read
CSS-Zero: Reuse-sharpened CSS-in-TS with Zero Runtime

CSS-Zero: Reuse-sharpened CSS-in-TS with Zero Runtime

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5 min read
No Uploads, No Servers: What I Learned Building Image Tools That Run 100% in Your Browser

No Uploads, No Servers: What I Learned Building Image Tools That Run 100% in Your Browser

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4 min read
How I Built a Free Real-Time Solana Token Scanner with Next.js

How I Built a Free Real-Time Solana Token Scanner with Next.js

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3 min read
Subscription webhooks aren't enough: detecting drift between Paddle and Supabase

Subscription webhooks aren't enough: detecting drift between Paddle and Supabase

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2 min read
Stream an LLM object into React, field by field — in one hook

Stream an LLM object into React, field by field — in one hook

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2 min read
AI coding agents and Theo's Rust TypeScript compiler: the caveats

AI coding agents and Theo's Rust TypeScript compiler: the caveats

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7 min read
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