Median line length for minified files

median-line-length.rb

def minified_files?
 return unless ['.js', '.css'].include? extname
 if lines.any?
   median = lines.sort_by { |l| l.length}[lines.length / 2].length
   puts "median line length: #{median}\n"
   (lines.inject(0) { |n, l| n += l.length } / lines.length) > 110
 else
   false
 end
end