I have been trying to add in sbt-uglify, which has worked out through trial and error. I find the documentation lacking and Google results not good. This plugin is based on UglifyJS.
The issue I am having is the fact that it drops unreachable code and unused functions/variables. This will be well enough if this was my code but I have to maintain legacy JS and can't have side effects of dropped stuff.
The code I used is Seq("unused: false", "dead_code: false") but have also tried Seq("unused: false, dead_code: false")
If someone knows if I am missing something please let me know.
Helpful Links: https://github.com/sbt/sbt-uglify
Here is a sample project if need be, but it is not of my own: https://github.com/nonameplum/play-uglify-test
Thanks!
Use Seq("unused=false", "dead_code=false")
The setting is passed directly to UglifyJS2 as command-line arguments. Uglify expects options in the form foo=bar according to their documentation: