class Sprockets::DirectiveProcessor

def constants

compat mode is on.
constants.yml was present. This is only available if
Sprockets 1.x allowed for constant interpolation if a

def constants
  if compat?
    pathname = Pathname.new(context.root_path).join("constants.yml")
    stat(pathname) ? YAML.load_file(pathname) : {}
  else
    {}
  end
end