A Storybook addon that provides a real-time performance monitoring panel with frame timing, input latency, layout shift, and React render profiling.

Frame timing utilities

An efficient queue capable of managing thousands of concurrent animations.

Packet replay and traffic generation over a native addon — replays pcap/pcapng/cap at recorded inter-frame timing (or topspeed/mbps/pps) on the fastest per-platform send backend (Linux PF_PACKET, BSD/macOS BPF, Windows Npcap)

Generate errors that contain a code frame that point to source locations.

Normalize CSS animation/transition timing functions.

Enable support for case insensitive attribute matching in selectors

Timing safe string compare using double HMAC

An implementation of the timing object specification.

Client-side telemetry for JOYCO sites

one rAF to rule them all

Animation Variables and Mixins used by Material Components for the web

A frame-synced render loop for JavaScript

Generic extension manager for WebSocket connections

Secure iframe rendering for untrusted content using SafeContentFrame

JS Object representation of a stack frame

A tiny, dependency-free collection of utility functions for animation, easing, interpolation, cursor mapping, and frame timing with a `Clock` class. Great for creative coding, canvas work, and lightweight game dev.

React component to wrap your application or component in an iFrame for encapsulation purposes

A Jimp-compatible library for working with GIFs

A tiny utility to create code frames