Class: Sprockets::UglifierCompressor

Inherits:
Object
  • Object
show all
Defined in:
lib/sprockets/uglifier_compressor.rb

Overview

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)

Constant Summary collapse

VERSION =
'3'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ UglifierCompressor

Returns a new instance of UglifierCompressor.


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# File 'lib/sprockets/uglifier_compressor.rb', line 39

def initialize(options = {})
  options[:comments] ||= :none

  @options = options
  @cache_key = "#{self.class.name}:#{Autoload::Uglifier::VERSION}:#{VERSION}:#{DigestUtils.digest(options)}".freeze
end

Instance Attribute Details

#cache_keyObject (readonly)

Returns the value of attribute cache_key


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# File 'lib/sprockets/uglifier_compressor.rb', line 37

def cache_key
  @cache_key
end

Class Method Details

.cache_keyObject


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# File 'lib/sprockets/uglifier_compressor.rb', line 33

def self.cache_key
  instance.cache_key
end

.call(input) ⇒ Object


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# File 'lib/sprockets/uglifier_compressor.rb', line 29

def self.call(input)
  instance.call(input)
end

.instanceObject

Public: Return singleton instance with default options.

Returns UglifierCompressor object.


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# File 'lib/sprockets/uglifier_compressor.rb', line 25

def self.instance
  @instance ||= new
end

Instance Method Details

#call(input) ⇒ Object


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# File 'lib/sprockets/uglifier_compressor.rb', line 46

def call(input)
  case Autoload::Uglifier::VERSION.to_i
  when 1
    raise "uglifier 1.x is no longer supported, please upgrade to 2.x or newer"
  when 2
    input_options = { source_filename: input[:filename] }
  else
    input_options = { source_map: { filename: input[:filename] } }
  end

  uglifier = Autoload::Uglifier.new(@options.merge(input_options))

  js, map = uglifier.compile_with_map(input[:data])

  map = SourceMapUtils.format_source_map(JSON.parse(map), input)
  map = SourceMapUtils.combine_source_maps(input[:metadata][:map], map)

  { data: js, map: map }
end