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require "compass/import-once/version"
require "compass/import-once/importer"
require "compass/import-once/engine"
require 'set'
module Compass
# although this is part of the compass suite of gems, it doesn't depend on compass,
# so any sass-based project can use to to get import-once behavior for all of their
# importers.
module ImportOnce
class << self
# A map of css filenames to a set of engine cache keys that uniquely identify what has
# been imported. The lifecycle of each key is handled by code wrapped around Sass's
# render, to_css and render_with_sourcemap methods on the Sass::Engine.
#
# Ideally, Sass would provide a place in it's public API to put
# information that persists for only the duration of a single compile and would be accessible
# for all sass engines and sass functions written in ruby.
def import_tracker
Thread.current[:import_once_tracker] ||= {}
end
def activate!
require 'compass/import-once/activate'
end
end
end
end
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