OpenOf
Type, in @jr2/orchestrator/src/open-effect.ts. It is type plumbing: it computes a type from the types of a Machine or of its parts, and a workflow module does not write it. The signature of an export, or a type that it names, names this type, so its declaration is here. The Authoring surface page lists each export.
ts
type OpenOf<P extends OpenEffectPart> = [P] extends [never] ? unknown : OpenEffect<P>;