ncrohn/express-uglify — pull request #10 by ear (2012-12-16 23:24:46+00:00)
Title: Use "uglify-js": "~1" to fetch >= 1.0.0 and <2.0.0 (which is incompatible)

It's explained here https://github.com/mishoo/UglifyJS#install-npm

Which gives us:

error: /javascripts/jquery-1.8.3.js TypeError: Cannot call method 'parse' of undefined
warning: "GET /javascripts/jquery-1.8.3.js" 200 - Failed to Minify
GET /javascripts/jquery-1.8.3.js 200 23ms - 259.82kb

Instead of:

info: "GET /javascripts/jquery-1.8.3.js" 200 - Minified
GET /javascripts/jquery-1.8.3.js 200 3599ms - 91.38kb
debug: Cached uglified: /javascripts/jquery-1.8.3.js