I'm getting
You are currently using minified code outside of NODE_ENV === 'production'. This means that you are running a slower development build of Redux. You can use loose-envify (https://github.com/zertosh/loose-envify) for browserify or DefinePlugin for webpack (http://stackoverflow.com/questions/30030031) to ensure you have the correct code for your production build.
I tried to fix it by adding following codes to my webpack config. But it didn't work for Redux. However, following codes did fix a similar warning from React.
plugins: [
...
new webpack.DefinePlugin({
'process.env': {
'NODE_ENV': '"production"'
}
}),
...
Did I miss anything?