Production build not minified

[tweeres04]

• I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

When I'm deploying a production build, I should have minified javascript code in order to minimize file size and maximize performance.

Current Behavior

My app.js is 529KB and not minified

Steps to Reproduce (for bugs)

1. next build
2. next start

OR

1. next build
2. next export

Context

I wanted to use next.js in order to have a lightning fast site as advertised but no minification kills that. I'm sure I'm missing something simple.

Your Environment

Tech	Version
next	4.1.1
node	8.4.0
OS	MacOS Sierra 10.12.6
browser	Chrome
etc	React and react-dom 16

[liweinan0423]

Can you confirm your NODE_ENV is set to production? I guess you may have a global environment variable NODE_ENV set and next scripts would honor the user defined ENV if there is one

[mcansh]

i thinks he's referring to

Uncaught Error: React is running in production mode, but dead code elimination has not been applied. Read how to correctly configure React for production: https://fb.me/react-perf-use-the-production-build

[tweeres04]

@liweinan0423 Yes, confirmed that NODE_ENV is production.

@mcansh Yes, I'm getting that!

[mcansh]

Looks like a 4.1.1 issue as it’s not happening in 4.1.0

[timneutkens]

Did a new release (4.1.2) can you try updating?

[mcansh]

looks good 👍

[timneutkens]

Thanks for verifying @mcansh 👌

[tweeres04]

Looks good! Thanks for your quick response @timneutkens!

[zhaihaoran]

it`s still a issue for me next@4.2.1,the same question happened on the Production enviroment, need help

[ilionic]

Confirm, getting the same on 4.2.1

[rgbkrk]

Yep, this is worth reopening. I believe React changed their strategy with 16.2.0.