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define: DUK_USE_ROM_GLOBAL_INHERIT
feature_enables: DUK_OPT_ROM_GLOBAL_INHERIT
introduced: 1.5.0
requires:
- DUK_USE_ROM_STRINGS
- DUK_USE_ROM_OBJECTS
conflicts:
- DUK_USE_ROM_GLOBAL_CLONE
default: false
tags:
- lowmemory
- experimental
description: >
When using ROM built-in objects, create a RAM-based global object by creating
a fresh empty object which inherits from the ROM-based global object. This
provides all the standard bindings with a small RAM footprint cost, but still
allows the global object to be extended and existing bindings overwritten
(but not deleted). The downside of this compared to cloning a global object
is that the inheritance is not fully transparent and the result is less
compliant.
Having a writable global object is usually expected; if the global object is
not writable, it's not possible to e.g. declare functions outside of CommonJS
modules.