Build the read view of a stored entry. entry === null means the key has never been recorded. nowMs is passed in rather than read from the clock so the whole model stays pure and a test can pin the age exactly.
entry === null
nowMs
Build the read view of a stored entry.
entry === nullmeans the key has never been recorded.nowMsis passed in rather than read from the clock so the whole model stays pure and a test can pin the age exactly.