define: DUK_USE_ROM_OBJECTS
introduced: 1.5.0
requires:
  - DUK_USE_ROM_STRINGS  # use both DUK_USE_ROM_STRINGS + DUK_USE_ROM_OBJECTS together for now
default: false
tags:
  - lowmemory
  - experimental
description: >
  Enable support for built-in objects compiled as constants and placed in a
  read-only data section.  This reduces startup RAM usage considerably at the
  cost of a larger code footprint and slower performance overall.  The built-in
  objects will be immutable: the objects will be non-extensible.

  ROM objects will always be non-extensible and properties are forced to be
  non-configurable.  Other property attributes will have their usual values;
  in particular, properties can be "writable" from a property attributes
  standpoint, but an attempt to actually change the property value will fail
  with a TypeError.  This may seem strange, but is necessary to allow a
  property value to be overridden in a RAM object inheriting from a ROM object:
  if the inherited ROM property was not writable, ECMAScript semantics would
  prevent a new property from being established in the RAM object.