class Module

def qualified_const_set(path, value)
  ActiveSupport::Deprecation.warn(<<-MESSAGE.squish)
    Module#qualified_const_set is deprecated in favour of the builtin
    Module#const_set and will be removed in Rails 5.1.
  MESSAGE
  ActiveSupport::QualifiedConstUtils.raise_if_absolute(path)
  const_name = path.demodulize
  mod_name = path.deconstantize
  mod = mod_name.empty? ? self : const_get(mod_name)
  mod.const_set(const_name, value)
end