Minimal working solution by extracting vendor files and using DLL plugin for improving webpack build time.
npm install
npm start
Hash: e40d51ae6c6610d1c16e
Version: webpack 1.13.2
Time: 2965ms
Asset Size Chunks Chunk Names
dll.vendor.js 1.75 MB 0 [emitted] vendor
[0] dll vendor 12 bytes {0} [built]
[1] ./app/vendors.js 74 bytes {0} [built]
+ 174 hidden modules
Hash: 6245c884d5af750f72f6
Version: webpack 1.13.2
Time: 1494ms
Asset Size Chunks Chunk Names
build.js 2.67 kB 0 [emitted] main
index.html 279 bytes [emitted]