An update is made of a Key, an Entry, or an Entry with a strict: true property.
Keys will result in a remove.
Entries will result in an add.
Entries with a strict: true property will conditionally result in a remove:
if the update.val and the entry.val fields match.
An update is made of a Key, an Entry, or an Entry with a
strict: trueproperty. Keys will result in a remove. Entries will result in an add. Entries with astrict: trueproperty will conditionally result in a remove: if the update.val and the entry.val fields match.