[PM-16791] introduce generator profile provider (#13588)

libs/common/src/tools/state/user-state-subject-dependency-provider.ts

@@ -12,6 +12,7 @@ export abstract class UserStateSubjectDependencyProvider {
   /** Provides local object persistence */
   abstract state: StateProvider;
 
+  // FIXME: remove `log` and inject the system provider into the USS instead
   /** Provides semantic logging */
   abstract log: <Context extends object>(_context: Jsonify<Context>) => SemanticLogger;
 }

libs/common/src/tools/state/user-state-subject.ts

@@ -81,7 +81,7 @@ const DEFAULT_FRAME_SIZE = 32;
 export class UserStateSubject<
     State extends object,
     Secret = State,
-    Disclosed = never,
+    Disclosed = Record<string, never>,
     Dependencies = null,
   >
   extends Observable<State>
@@ -243,7 +243,7 @@ export class UserStateSubject<
         // `init$` becomes the accumulator for `scan`
         init$.pipe(
           first(),
-          map((init) => [init, null] as const),
+          map((init) => [init, null] as [State, Dependencies]),
         ),
         input$.pipe(
           map((constrained) => constrained.state),
@@ -256,7 +256,7 @@ export class UserStateSubject<
           if (shouldUpdate) {
             // actual update
             const next = this.context.nextValue?.(prev, pending, dependencies) ?? pending;
-            return [next, dependencies];
+            return [next, dependencies] as const;
           } else {
             // false update
             this.log.debug("shouldUpdate prevented write");