Animation Worklet

Animation Worklet is a new primitive that provides extensibility for web animations and enables high performance scripted animations that can run on dedicated thread. The feature is developed as part of the CSS Houdini task force.

The Animation Worklet API provides a method to create scripted animations that control a set of animation effects. These animations are executed inside an isolated execution environment, worklet which makes it possible for browser to run such animations in their own dedicated thread to provide a degree of performance isolation from main thread. Worklet animations may be created and controlled via Web Animations API. Animation Worklet combined with other new features such as ScrollTimeline, Input in Worklets, can allow many currently interactive main-thread rAF-based animations to move off main thread which improve smoothness.

[Specification](https://drafts.css-houdini.org/css-animationworklet/)

[Explainer](https://github.com/w3c/css-houdini-drafts/blob/master/css-animationworklet/README.md)

[Design Principles and
Goals](https://github.com/w3c/css-houdini-drafts/blob/master/css-animationworklet/principles.md)

Tests:
<https://github.com/web-platform-tests/wpt/tree/master/animation-worklet>

Example codes [1](https://googlechromelabs.github.io/houdini-samples/),
[2](https://aw-playground.glitch.me/),
[3](https://houdini.glitch.me/animation)

[Blink Design
Document](https://docs.google.com/document/d/1MdpvGtnK_A2kTzLeTd07NUevMON2WBRn5wirxWEFd2w/edit?usp=sharing)

Current Status