Flight recorder for your local dev environment. Capture a rolling window of logs across processes.

🚀 The Animated Digits component for React Native seamlessly blends a sophisticated number rotation effect with dynamic value updates, creating an engaging and interactive experience that enhances your user interfaces with a touch of elegance and exciteme

<img src="https://react-window.vercel.app/og.png" alt="react-window logo" width="400" height="210" />

FarmHash functions compiled using Rust and WebAssembly to make them easy to use in node.js and the browser

Rolling ball baseline correction

A simple file-logger for React Native

Lightweight Babel AST traversal

Simplifies communications with Workbox packages running in the service worker

file streams that roll over when size limits, or dates are reached

Parse JavaScript one character at a time to look for snippets in Templates. This is not a validator, it's just designed to allow you to have sections of JavaScript delimited by brackets robustly.

Reliably determines if the code is running in Node.js

Reliable way to get the height and width of terminal/console, since it's not calculated or updated the same way on all platforms, environments and node.js versions.

Rolling statistics

Delay function calls until a set time elapses after the last invocation

Tooltip and Popover Positioning Engine

A JavaScript implementation of many web standards

A CSS selector engine.

Stop wasting your AI coding CLI usage windows. Queue tasks for spare capacity, learn your daily usage pattern, and prewarm your rolling window so resets land when you need them. Works with Claude Code, Codex CLI, and Cursor.

Retry and circuit breaker as pure functions — exponential, decorrelated jitter, fibonacci backoff, consecutive and rolling-window breakers. JSON-serializable state, no clock reads, no I/O, no dependencies. Survives a process restart, so it works in Cloudf

Scrape Window Metadata