This boilerplate code can be used as it is to create new react project using Webpack 4 and modular css file functionality
Dependencies to install before running your project:
npm install sass-loader node-sass webpack --save-dev (install sass supoort in react app)
npm install --save-dev @babel/plugin-proposal-class-properties (for babel)
npm install --save-dev @babel/plugin-proposal-export-default-from (for babel)
npm install --save @babel/polyfill
npm install file-loader --save-dev