In my previous Meteor app, using browserify, and React, all was working until I switched to meteor webpack.
I use react-select in my Meteor apps and it worked great
Since you use webpack, you can add an alias for loading react, like this:
// In webpack.config.js
resolve: {
alias: {
react: path.resolve('node_modules/react'),
},
},
This prevented the addComponentAsRefTo(...) error and made our build succeed again. However, for some reason, the testing build failed only on our CI environment as it could not resolve the node_modules/react path. I think it's unlikely that you will encounter this particular problem, though.