class Sprockets::SassImporter

systems work together.
‘@import` statements. This makes the Sprockets and Sass caching
This custom importer adds sprockets dependency tracking on to Sass

def find(*args) 

def find(*args)
  engine = super
  if engine && (filename = engine.options[:filename])
    @context.depend_on_asset(filename)
  end
  engine
end

def find_relative(*args) 

def find_relative(*args)
  engine = super
  if engine && (filename = engine.options[:filename])
    @context.depend_on_asset(filename)
  end
  engine
end

def initialize(context, root) 

def initialize(context, root)
  @context = context
  super root.to_s
end