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# frozen_string_literal: true
require 'sprockets/autoload'
require 'sprockets/source_map_utils'
module Sprockets
# Processor engine class for the CoffeeScript compiler.
# Depends on the `coffee-script` and `coffee-script-source` gems.
#
# For more information see:
#
# https://github.com/rails/ruby-coffee-script
#
module CoffeeScriptProcessor
VERSION = '2'
def self.cache_key
@cache_key ||= "#{name}:#{Autoload::CoffeeScript::Source.version}:#{VERSION}".freeze
end
def self.call(input)
data = input[:data]
js, map = input[:cache].fetch([self.cache_key, data, input[:filename]]) do
result = Autoload::CoffeeScript.compile(
data,
sourceMap: "v3",
sourceFiles: [File.basename(input[:filename])],
generatedFile: input[:filename]
)
[result['js'], JSON.parse(result['v3SourceMap'])]
end
map = SourceMapUtils.format_source_map(map, input)
map = SourceMapUtils.combine_source_maps(input[:metadata][:map], map)
{ data: js, map: map }
end
end
end
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