Yes, about readability, I’ve now added the 
I should have put there. However my main point was the GPL (potential) issue:
https://www.gnu.org/software/librejs/free-your-javascript.html
[see:
“As additional permission under GNU GPL version 3 section 7, you
may distribute non-source (e.g., minimized or compacted)”
meaning new in GPLv3, and its absense in GPLv2 (and other wording) meaning, considered there binary, ont ok as a source; not allowed to redistribute as such, without “corresponding source”, e.g. the non-minified version). See also e.g. LibreJS.]