chunked
Collects values into lists bounded by a time window and an optional maxSize.
A chunk opens when its first value arrives and is emitted either when window has elapsed since the chunk opened or when it reaches maxSize, whichever happens first. A non-empty chunk in progress is emitted when the upstream completes. Empty lists are never emitted. The upstream is collected without conflation; values wait for the collector when it is slow.
Throws
Groups values into lists of size elements, emitting the final partial list on completion.
Throws
when size is less than 1.