[ianstormtaylor]

Honestly right now it's probably worse. It's still in beta, so I've been working on the core architecture and logic, before diving into things like package size. So I'm not sure. It also hugely depends on whether you were already using React and Immutable.js as dependencies inside your app, or whether you have to add them just for the editor.

For super simple WYSIWYG editing, like I mentioned, you're not going to want to use Slate. (Or maybe Draft either.)

Slate is designed for much more advanced use cases. Things like building wiki tools, or chat tools, or anything where the editing experience itself is a significant enough portion of your product that you want total control over it, and don't want to be constrained by the opinions that most editing frameworks bake into their core libraries.