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require 'sprockets/autoload'
require 'sprockets/digest_utils'
module Sprockets
# Public: Uglifier/Uglify compressor.
#
# To accept the default options
#
# environment.register_bundle_processor 'application/javascript',
# Sprockets::UglifierCompressor
#
# Or to pass options to the Uglifier class.
#
# environment.register_bundle_processor 'application/javascript',
# Sprockets::UglifierCompressor.new(comments: :copyright)
#
class UglifierCompressor
VERSION = '1'
# Public: Return singleton instance with default options.
#
# Returns UglifierCompressor object.
def self.instance
@instance ||= new
end
def self.call(input)
instance.call(input)
end
def self.cache_key
instance.cache_key
end
attr_reader :cache_key
def initialize(options = {})
# Feature detect Uglifier 2.0 option support
if Autoload::Uglifier::DEFAULTS[:copyright]
# Uglifier < 2.x
options[:copyright] ||= false
else
# Uglifier >= 2.x
options[:comments] ||= :none
end
@uglifier = Autoload::Uglifier.new(options)
@cache_key = "#{self.class.name}:#{Autoload::Uglifier::VERSION}:#{VERSION}:#{DigestUtils.digest(options)}".freeze
end
def call(input)
@uglifier.compile(input[:data])
end
end
end
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