JSLint Rake Task

jslint.rake

desc "Checks the JavaScript files with JSLint"
task :jslint do
  failed_files  = []
  skipped_files = ["jquery-1.4.js", "jquery-json-2.1.js"]

  rhino_path  = File.join(RAILS_ROOT, "vendor", "jslint", "js.jar")
  jslint_path = File.join(RAILS_ROOT, "vendor", "jslint", "jslint.js")

  Dir['public/**/*.js'].reject{|path| skipped_files.include?(path.match(/.*\/(.*)/)[1])}.each do |name|
    cmd = "java -jar #{rhino_path} #{jslint_path} #{name}"
    results = %x{#{cmd}}
    unless results =~ /^jslint: No problems found in/
      puts "#{name}:"
      puts results
      failed_files << name
    end
  end

  if failed_files.size > 0
    exit 1
  end
end