actionpack/lib/sprockets/compressors.rb


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module Sprockets
  class NullCompressor
    def compress(content)
      content
    end
  end

  class LazyCompressor
    def initialize(&block)
      @block = block
    end

    def compressor
      @compressor ||= @block.call || NullCompressor.new
    end

    def compress(content)
      compressor.compress(content)
    end
  end
end