Optional ReadonlybatchSize?: numberConsecutive feed items delivered per invocation, as event.items in feed order; one when unset.
The last batch of a read is short rather than waiting for the feed to fill it.
Optional Readonlyfeed?: Ref<Feed & OfKind<Object> & Unknown>Readonlykind: "feed"
Feed items per invocation for a feed trigger: its
batchSize, clamped to[1, MAX_FEED_BATCH_SIZE].