Class: Squash::Javascript::SourceMappingJavascriptMinifier

Inherits:
Tilt::Template
  • Object
show all
Defined in:
lib/squash/javascript/source_mapping_javascript_minifier.rb

Instance Method Summary collapse

Instance Method Details

#evaluate(context, locals) ⇒ Object 



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# File 'lib/squash/javascript/source_mapping_javascript_minifier.rb', line 6

def evaluate(context, locals)
  source_map_file = Tempfile.new('sourcemap')
  compressor      = Closure::Compiler.new(create_source_map: source_map_file.path)
  minified        = compressor.compress(data)

  minified_file = Tempfile.new('minified')
  minified_file.write minified

  map                   = JSON.parse(source_map_file.read)
  minified_filename     = [Rails.application.config.assets.prefix, "#{context.logical_path}-#{digest(minified)}.js"].join('/')
  concatenated_filename = [Rails.application.config.assets.prefix, "#{context.logical_path}.js"].join('/')
  map['file']           = minified_filename
  map['sources']        = [concatenated_filename]

  path = source_map_path(digest(minified))
  FileUtils.mkdir_p path.dirname
  File.open(path, 'w') { |f| f.puts map.to_json }

  return minified
end

#prepare ⇒ Object 



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# File 'lib/squash/javascript/source_mapping_javascript_minifier.rb', line 4

def prepare() end