。
The editor will probably expect them to be typed.
Literal
Editor [topic-は] those [subject-が] typed being [thing-こと] [object-を] expect probably.
The embedded clause それらがタイプされていること — 'the fact that they are typed' — is nominalized with こと and serves as the object of 期待する. タイプされている uses the passive plus ている to describe a resulting state: 'already typed,' not 'being typed.' A sentence about expectation in a publishing workflow.