Compression does not happen after build
Koa, by default, compresses its responses. Works great in dev env. But I use webpack to generate an uglified/minified single index.js for the backend and although the functionality of the app is fine, the compression fails. 
Some of my apis return json arrays of MBs and on dev mode(running app with npm start), the transfer size is in KBs but after build, the transfer size is the actual content size.

Can this be fixed?
