ReactDom is the actual culprit. Preact [1] is a great ~4kb alternative, though it's still on the v15 API. React makes sense for something like Facebook/Instagr

ReactDom is the actual culprit. Preact [1] is a great ~4kb alternative, though it's still on the v15 API. React makes sense for something like Facebook/Instagram web where users interact with the app hundreds of times in a single session, but we can't fall into the trap of treating it like jQuery and hitting every nail we come across with it. I'm hopeful that like jQuery, whatever features that make ReactDom et al. so large will eventually make their way upstream and be codified as browser specs. [1] https://github.com/developit/preact https://github.com/developit/preact