All GC objects have GC headers prepended, from which you can lookup the class and how to scan it. https://github.com/v8/v8/blob/master/src/heap/cppgc/heap-obje

All GC objects have GC headers prepended, from which you can lookup the class and how to scan it. https://github.com/v8/v8/blob/master/src/heap/cppgc/heap-object-header.h https://github.com/v8/v8/blob/master/src/heap/cppgc/heap-obj...