I want to to test precompilation on development mode. I set: config.assets.digest = true config.assets.debug = false
Then I run: rake assets:precompile:all RAILS_ENV=development
All works, assets are precompiled but comments are not removed. What options should I provide to make it to remove comments from assets on precompile?
Ok, I found the solution. I compile assets with Heroku.
Since I use Windows and there are some problems with Uglifier under Windows, the option:
config.assets.compress = true
breaks down local precompilation. So I decided to compile my assets
using Heroku because Heroku seems doesn't use Windows, they use open
source software 
And that's not bad, at least somebody has to use it.