watcher.rb

require "spring/watcher/abstract"
require "spring/watcher/listen"
require "spring/watcher/polling"

module Spring
  class << self
    attr_accessor :watch_interval
    attr_writer :watcher
  end

  self.watch_interval = 0.2

  def self.watcher
    @watcher ||= watcher_class.new(Spring.application_root_path, watch_interval)
  end

  def self.watcher_class
    #if Watcher::Listen.available?
    #  Watcher::Listen
    #else
    #  Watcher::Polling
    #end
    Watcher::Polling
  end

  def self.watch(*items)
    watcher.add *items
  end
end