web.js
Firstly - ReactSketchApp is Awesome THX THX THX! 

I have a question (not an issue) so is this the right place to ask?

Q. 
A couple of examples use 'npm run web' but can all the examples do this? If so, is it hard to setup? I can kinda see what's happening in the code but have little react exposure so wanted to ask 1st before I try.

For me to sell this workflow to colleagues, I'll need to demonstrate how they take anything I do in ReactSketchApp as input into generating final front end code. 

They don't use React currently, they use jQuery. Having our Designers code in React, means we not only gain respect from the developers, we can now lead the FED technology and encourage them to keep up.

Link