- YUICompressor has no release for 3 years
XWIKI-6148shows YUI compressor is not easy to upgrade (because the maven project embeds Rhino).
XWIKI-13772we find that Promise.prototype.catch() is not correctly handled by yuicompressor.
- It have been replaced by UglifyJS.
- A java wrapper: https://github.com/yuanyan/UglifyJS-java
- An other candidate for the replacement is Google Closure.