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A zero-dependency expression engine for pricing rules, search filters, templates, and user-authored conditions.

FFmpeg bindings for Node.js. Features both low-level and high-level APIs, full hardware acceleration, TypeScript support, and modern async patterns - seydx/node-av

FFmpeg bindings for Node.js

Environment variable validation for Node, Bun, and other compatible JS runtimes - af/envalid

In React, it’s always preferable to maintain a linear data flow. If a parent needs something, lift the state instead of smuggling it back up. All rules are made to be broken, though.

Modern engineering values.

a fast local diff viewer. Contribute to nkzw-tech/codiff development by creating an account on GitHub.

Deno emerged as a solution to the overwhelming configuration requirements of the modern TypeScript ecosystem by offering a zero-config, single-binary experience. By integrating essential tools for formatting, linting, and testing alongside web-standard APIs, it removed the tedious setup rituals that often deterred developers. Recently, however, Deno has pivoted toward deep Node.js compatibility, supporting npm packages and traditional module structures to accelerate adoption. This shift creates a strategic risk where high compatibility might inadvertently discourage developers from targeting Deno’s unique APIs, especially as Node.js adopts Deno’s innovations like native TypeScript support and permission models. Commercial pressures may be forcing a prioritization of rapid growth and compatibility over the patient development of a truly self-sufficient, vertically integrated toolchain. While Deno remains a powerful choice, its convergence with the legacy ecosystem suggests a move away from the radical simplicity that originally defined its mission. The ongoing convergence of runtimes serves as a vital reminder of the trade-offs between technical purity and the demands of commercial viability.

Sourcemaps unlock some observability benefits but might expose your codebase. Check out how they work, and how to protect yourself.

Accessible modal dialogs with minimal configuration. Just 1.9kb minified and gzipped, its a tiny library for big change.

⭕ Tiny javascript library for creating accessible modal dialogs - micromodal/Micromodal

Find more performant and safer replacements for outdated or unnecessary npm packages.

Turning Chrome's Built-in AI to tackle Zork

Flow vs. TypeScript: how object exactness, variance defaults, `as` casts, type guards, and Flow's `component`/`hook`/`renders` syntax differ from TypeScript.

Active link styling is one of the most common things you need in a real application. Here is how to build a reusable NavLink component for a Next.js app, taking inspiration from React Router, that handles Cache Components and flicker-free hydration.

Applications often end up with all sorts of UI whose sole purpose is to occupy the space where data should eventually appear. We're all spending a surprising amount of time solving the same problem, and none of it is really product work.

how an RSC app gets split between server and client at build time

noteでエンジニアをやっているyamagataです。最近は１歳半の娘が話せる単語が少しずつ増えてきて、お話するのが楽しくなってきました。 1. はじめに：直面した課題 さて、弊社のダッシュボードバッチ処理において、パフォーマンスの限界に直面していました。 対象となるデータは1日分だけでも最大約320万件。関連するテーブル（スキデータのテーブルなど）は7億レコードを超え、全体では30億レコード規模に達する巨大なデータを扱っています。 当初の処理ロジックは12年前から続くもので、以下のような問題を抱えていました。 クエリ実行回数： 1日あたり最大約1,600万回 実行時

コーディングエージェントの自律性が向上し、並行して複数のエージェントを動かすことが当たり前になってきた今、エージェントの動きを逐一監視することは現実的ではなくなっています。そのため実装前に人間と AI の間で共通理解を形成することが重要になっています。この記事では、実装前の設計フェーズで要件を明確にし、人間と AI の間で共通理解を形成するためのスキル `/grill-me` について紹介します。

Vercel Drop lets you deploy a file, folder, or .zip by dragging it into your browser. No Git or CLI required. Framework projects build automatically.

pnpm used to expand $ placeholders everywhere it found them — including in the .npmrc and pnpm-workspace.yaml files that live inside the repository you just cloned. That turned out to be a way for a malicious repository to steal the secrets in your environment. As of v10.34.2 and v11.5.3, pnpm stops expanding environment variables in repository-controlled registry and credential settings.

A lenient, fast JSON processor for Ruby. It extracts strict JSON, NDJSON, JSONL, JSON5, HJSON, and messy JSON input humans or LLMs actually write — and in benchmarks it matches or beats Oj on nearl...

This is an adapted excerpt from Chapter 15 of Modular Rails: Architecture for the Long Game, my book on building maintainable Ruby on Rails applications usin...

How to use Stripe Test Clocks and the Stripe CLI to run a real end-to-end payment failure webhook test locally.

The Ruby performance PRs worth knowing about - fast paths, fewer allocations, and benchmark-backed speedups across strings, files, GC, and the JIT.

Go is a language that advertises simplicity without "special cases". But like all languages, special cases exist, sometimes in surprising places.

Web-scale and security-hardened API key server for users, services, machine to machine, and AI agents. Token derivation brings fine-grained capability tokens to avoid common API key pitfalls. Apach...

A GNU screen style terminal multiplexer built on libghostty. - coder/boo

Goならわかるシステムプログラミングなどのウェブ連載や書籍化でお世話になりまくりの鹿野さんのブログ記事が話題となっています。 golden-luckyの日記: AI時代のコンピューター技術書 これを読んで、今までモヤモヤ思っていたことに光明が射してきたので、ちょっと実験してみました。 AI開発のボトルネックは今どこか1年ほど前はあまり長時間モデルが働き続けることもなく、生成AIの月あたりのクオ