Size of the booted memory, a multiple of 65,536.
OptionalcontextCaller-supplied digest of whatever else shapes the heap (settings, shims, assets); this module keeps it as an opaque string of at most 4,096 UTF-8 bytes and compares it at replay.
The bytes of those pages, in the same order (pages.length * 65,536 bytes).
OptionalglobalsMutable globals whose value differs from the fresh instance, by wasm global index.
OptionalmoduleLowercase sha256 hex of the module bytes the image was taken from.
Page indexes that differ, strictly ascending.
OptionaltableFunction table slots whose function differs from the fresh instance.
The pages of a booted memory that differ from a fresh instance of the same module, plus the mutable globals and table slots boot changed. Pages that are zero in both are not stored.