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In order to adapt to V8 changes regarding storing private properties on Externals, ExternalWrapper objects were introduced in #51149. However, this new code stores the type tag pointer and not the 128-bit value inside. This breaks some pre-existing code that were making temporary tags. It also means that unloading the module will cause existing External objects to have a tag pointer that points nowhere (use-after-free bug). Change ExternalWrapper to store tags by value to fix this regression. PR-URL: https://github.com/nodejs/node/pull/52426 Reviewed-By: Gabriel Schulhof <gabrielschulhof@gmail.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com>