Hi HN! I'm Matt, author of Framer Motion and Popmotion. Today I'm launching my side-project, Motion One. It's a new animation library built on the Web Animatio

Hi HN! I'm Matt, author of Framer Motion and Popmotion. Today I'm launching my side-project, Motion One. It's a new animation library built on the Web Animations API (WAAPI). I actually started this project as a book, but repeatedly found myself explaining some odd concepts (like fill mode) that I felt quite strongly that users shouldn't have to care about. I also discovered the state of WAAPI's implementation is very inconsistent across browsers despite green lights across caniuse [1]. Motion One makes WAAPI easier to use by presenting it with a simple API that also smoothes over browser inconsistencies [2]. It also adds all the features you'd expect from a modern JS animation library, like timelines, independent transform animations, and soon, springs. Being built on WAAPI, it can create hardware accelerated animations. And it does all this in a bundlesize that is half that of Anime.js and less than a fifth of Greensock [3]. Feedback, questions and suggestions are welcome! [1] [https://caniuse.com/web-animation](https://caniuse.com/web-animation) https://caniuse.com/web-animation](https://caniuse.com/web-a... [2] [https://motion.dev/guides/waapi-improvements](https://motion.dev/guides/waapi-improvements) https://motion.dev/guides/waapi-improvements](https://motion... [3] [https://motion.dev/guides/feature-comparison](https://motion.dev/guides/feature-comparison) https://motion.dev/guides/feature-comparison](https://motion... Edit: Just seen I was jumped the gun on my own Show HN by bpierre :)