class Sprockets::FileReader

memory and passes it along as ‘input`.
Internal: The first processor in the pipeline that reads the file into

def self.call(input) 

def self.call(input)
  env = input[:environment]
  data = env.read_file(input[:filename], input[:content_type])
  dependencies = Set.new(input[:metadata][:dependencies])
  dependencies += [env.build_file_digest_uri(input[:filename])]
  { data: data, dependencies: dependencies }
end