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# frozen_string_literal: true
require 'sprockets/digest_utils'
require 'sprockets/source_map_utils' if Gem::Version.new(::Sprockets::VERSION) >= Gem::Version.new('4.x')
class Terser
# A wrapper for Sprockets
class Compressor
VERSION = '1'
def initialize(options = {})
options[:comments] ||= :none
@options = options
@cache_key = -"Terser:#{::Terser::VERSION}:#{VERSION}:#{::Sprockets::DigestUtils.digest(options)}"
@terser = ::Terser.new(@options)
end
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
if Gem::Version.new(::Sprockets::VERSION) >= Gem::Version.new('4.x')
def call(input)
input_options = { :source_map => { :filename => input[:filename] } }
js, map = @terser.compile_with_map(input[:data], input_options)
map = ::Sprockets::SourceMapUtils.format_source_map(JSON.parse(map), input)
map = ::Sprockets::SourceMapUtils.combine_source_maps(input[:metadata][:map], map)
{ :data => js, :map => map }
end
else
def call(input)
@terser.compile(input[:data])
end
end
end
end
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