# use this file in the rails app root directory and run it with # ruby precompile_assets.rb to see if there is any error in your # js file assets by using Uglifier. This would save you from running # rake assets:precompile and using production as env var. require './config/environment' JS_PATH = 'app/assets/javascripts/**/*.js'.freeze Dir[JS_PATH].each do |file_name| puts "\n#{file_name}" puts Uglifier.compile(File.read(file_name)) end