Hey, another React team member here. Yes, some compatibility code exists, but it's mostly just part of the default config which you can change. Additionally we

Hey, another React team member here. Yes, some compatibility code exists, but it's mostly just part of the default config which you can change. Additionally we don't inject things like the tap plugin by default so you aren't getting those extra bytes. You can see what I mean about React's modularity by looking at this file https://github.com/facebook/react/blob/master/src/browser/ReactDefaultInjection.js https://github.com/facebook/react/blob/master/src/browser/Re...