Only JSON primitives and undefined now count as inert stores (published
immortal containers may hold functions, accessors or prototypes), so an
intact container provably holds only primitives and containers of its own
region. The plain stringify proof then needs no member inspection: O(1)
for arrays and a key scan for objects, instead of a pass that loaded every
member node (a cache miss per element) before the write loaded it again.
Malte Ubl
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