I fill like I'm doing something wrong with webpack, because it takes so much time to make a build. I'll not ask you to review the whole webpack config and find a problem place for me, but
if you could recommend some practices to test the productivity it would be nice.
only one thing that I found on the net was a half-finished article build-performance
UPD : How to optimize webpack's build time using prefetchPlugin & analyse tool? (credits to @daniel-protopopov)