Unfortunately, I have not tried to use react-toolbox in MERN. I am using another boilerplate (but mern is cool, and I am active thief of MERN code))). I do not fully understand your problem. What do you mean by > If I run npm start before importing the scss

You can easily use react toolbox. To integrate toolbox you should: Install toolbox and sass-loader Configure webpack with sass loader { test: /\.scss$/, include: /(react-toolbox|app)/, loaders: [ 'style-loader', 'css-loader?modules&sourceMap&importLoaders=2&sourceMap&localIdentName=[name]__[local]___[hash:base64:5]', 'postcss-loader', 'sass-loader?sourceMap' ],} Include somewhere in your app import 'react-toolbox/lib/commons.scss'; .

And when do you plan to release v2? I will help you. I am newbie in react and redux. I discovered all this stuff by MERN and this awesome template (this is yours strong competitor))) and I had no problems with sagas.