Controller for special behaviors

A snazzy React joystick component

## Installation

The missing standard library for TypeScript, for writing production-grade software.

A wrapper package that uses `useInsertionEffect` or a fallback for it

A React helper hook for scheduling a layout effect with a fallback to a regular effect for environments where layout effects should not be used (such as server-side rendering).

Platform specific implementations for the Node.js runtime

Unified interfaces for common platform-specific services

React Native Joystick

A virtual joystick for touch capable interfaces

The example programs that ship with the toolchain: hello-world, the 0.2.0 goal program, joystick, the controller test app, fancy, the raster showpiece, swarm, the moving-objects showpiece, and media-walk, the portable graphics and audio slice — listed in

A set of helpers for testing Effects with vitest

Ponyfill of the `React.useEffectEvent` hook, which became stable in React 19.2

Create components whose prop changes map to a global side effect

It's react's useEffect hook, except using deep comparison on the inputs, not reference equality

Create components whose prop changes map to a global side effect

Effect Language Service for TypeScript-Go — Effect-specific diagnostics and hover features.

OpenTelemetry integration for Effect

Platform specific implementations for the Bun runtime

A React hook that uses useEffect() on the server and useLayoutEffect() in the browser