The best alternatives to Anime.js are Pressure.js, Zdog, and DraftJS Plugins 2.0. If these 3 options don't work for you, we've listed a few more alternatives below.
DraftJS Plugins 2.0 is plugin architecture for Draft.js now including rich text editing toolbars and features like drag'n'drop, alignment or resize for Atomic Blocks like images. Version 1.0 already included Slack-like Emoji autocompletion or Facebook-like mentions.