OpenEffectSlots
Type, in @jr2/orchestrator/src/customize.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 OpenEffectSlots<M extends AnyStateMachine> = Extract<SlotsOf<M>, { logic: OpenEffect<OpenEffectPart> }>["src"];