Remove memory storage cache from derived state. Use observable cache and port messaging (#8939)

apps/browser/src/background/main.background.ts

@@ -490,7 +490,7 @@ export default class MainBackground {
       this.accountService,
       this.singleUserStateProvider,
     );
-    this.derivedStateProvider = new BackgroundDerivedStateProvider(storageServiceProvider);
+    this.derivedStateProvider = new BackgroundDerivedStateProvider();
     this.stateProvider = new DefaultStateProvider(
       this.activeUserStateProvider,
       this.singleUserStateProvider,

apps/browser/src/platform/background/service-factories/derived-state-provider.factory.ts

@@ -3,15 +3,10 @@ import { DerivedStateProvider } from "@bitwarden/common/platform/state";
 import { BackgroundDerivedStateProvider } from "../../state/background-derived-state.provider";
 
 import { CachedServices, FactoryOptions, factory } from "./factory-options";
-import {
-  StorageServiceProviderInitOptions,
-  storageServiceProviderFactory,
-} from "./storage-service-provider.factory";
 
 type DerivedStateProviderFactoryOptions = FactoryOptions;
 
-export type DerivedStateProviderInitOptions = DerivedStateProviderFactoryOptions &
+export type DerivedStateProviderInitOptions = DerivedStateProviderFactoryOptions;
-  StorageServiceProviderInitOptions;
 
 export async function derivedStateProviderFactory(
   cache: { derivedStateProvider?: DerivedStateProvider } & CachedServices,
@@ -21,7 +16,6 @@ export async function derivedStateProviderFactory(
     cache,
     "derivedStateProvider",
     opts,
-    async () =>
+    async () => new BackgroundDerivedStateProvider(),
-      new BackgroundDerivedStateProvider(await storageServiceProviderFactory(cache, opts)),
   );
 }

apps/browser/src/platform/state/background-derived-state.provider.ts

@@ -1,9 +1,5 @@
 import { Observable } from "rxjs";
 
-import {
-  AbstractStorageService,
-  ObservableStorageService,
-} from "@bitwarden/common/platform/abstractions/storage.service";
 import { DeriveDefinition, DerivedState } from "@bitwarden/common/platform/state";
 // eslint-disable-next-line import/no-restricted-paths -- extending this class for this client
 import { DefaultDerivedStateProvider } from "@bitwarden/common/platform/state/implementations/default-derived-state.provider";
@@ -16,14 +12,11 @@ export class BackgroundDerivedStateProvider extends DefaultDerivedStateProvider
     parentState$: Observable<TFrom>,
     deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
     dependencies: TDeps,
-    storageLocation: [string, AbstractStorageService & ObservableStorageService],
   ): DerivedState<TTo> {
-    const [location, storageService] = storageLocation;
     return new BackgroundDerivedState(
       parentState$,
       deriveDefinition,
-      storageService,
+      deriveDefinition.buildCacheKey(),
-      deriveDefinition.buildCacheKey(location),
       dependencies,
     );
   }

apps/browser/src/platform/state/background-derived-state.ts

@@ -1,10 +1,7 @@
-import { Observable, Subscription } from "rxjs";
+import { Observable, Subscription, concatMap } from "rxjs";
 import { Jsonify } from "type-fest";
 
-import {
+import { Utils } from "@bitwarden/common/platform/misc/utils";
-  AbstractStorageService,
-  ObservableStorageService,
-} from "@bitwarden/common/platform/abstractions/storage.service";
 import { DeriveDefinition } from "@bitwarden/common/platform/state";
 // eslint-disable-next-line import/no-restricted-paths -- extending this class for this client
 import { DefaultDerivedState } from "@bitwarden/common/platform/state/implementations/default-derived-state";
@@ -22,11 +19,10 @@ export class BackgroundDerivedState<
   constructor(
     parentState$: Observable<TFrom>,
     deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
-    memoryStorage: AbstractStorageService & ObservableStorageService,
     portName: string,
     dependencies: TDeps,
   ) {
-    super(parentState$, deriveDefinition, memoryStorage, dependencies);
+    super(parentState$, deriveDefinition, dependencies);
 
     // listen for foreground derived states to connect
     BrowserApi.addListener(chrome.runtime.onConnect, (port) => {
@@ -42,7 +38,20 @@ export class BackgroundDerivedState<
       });
       port.onMessage.addListener(listenerCallback);
 
-      const stateSubscription = this.state$.subscribe();
+      const stateSubscription = this.state$
+        .pipe(
+          concatMap(async (state) => {
+            await this.sendMessage(
+              {
+                action: "nextState",
+                data: JSON.stringify(state),
+                id: Utils.newGuid(),
+              },
+              port,
+            );
+          }),
+        )
+        .subscribe();
 
       this.portSubscriptions.set(port, stateSubscription);
     });

apps/browser/src/platform/state/derived-state-interactions.spec.ts

@@ -4,14 +4,13 @@
  */
 
 import { NgZone } from "@angular/core";
-import { FakeStorageService } from "@bitwarden/common/../spec/fake-storage.service";
-import { awaitAsync, trackEmissions } from "@bitwarden/common/../spec/utils";
 import { mock } from "jest-mock-extended";
 import { Subject, firstValueFrom } from "rxjs";
 
 import { DeriveDefinition } from "@bitwarden/common/platform/state";
 // eslint-disable-next-line import/no-restricted-paths -- needed to define a derive definition
 import { StateDefinition } from "@bitwarden/common/platform/state/state-definition";
+import { awaitAsync, trackEmissions, ObservableTracker } from "@bitwarden/common/spec";
 
 import { mockPorts } from "../../../spec/mock-port.spec-util";
 
@@ -22,6 +21,7 @@ const stateDefinition = new StateDefinition("test", "memory");
 const deriveDefinition = new DeriveDefinition(stateDefinition, "test", {
   derive: (dateString: string) => (dateString == null ? null : new Date(dateString)),
   deserializer: (dateString: string) => (dateString == null ? null : new Date(dateString)),
+  cleanupDelayMs: 1000,
 });
 
 // Mock out the runInsideAngular operator so we don't have to deal with zone.js
@@ -35,7 +35,6 @@ describe("foreground background derived state interactions", () => {
   let foreground: ForegroundDerivedState<Date>;
   let background: BackgroundDerivedState<string, Date, Record<string, unknown>>;
   let parentState$: Subject<string>;
-  let memoryStorage: FakeStorageService;
   const initialParent = "2020-01-01";
   const ngZone = mock<NgZone>();
   const portName = "testPort";
@@ -43,16 +42,9 @@ describe("foreground background derived state interactions", () => {
   beforeEach(() => {
     mockPorts();
     parentState$ = new Subject<string>();
-    memoryStorage = new FakeStorageService();
 
-    background = new BackgroundDerivedState(
+    background = new BackgroundDerivedState(parentState$, deriveDefinition, portName, {});
-      parentState$,
+    foreground = new ForegroundDerivedState(deriveDefinition, portName, ngZone);
-      deriveDefinition,
-      memoryStorage,
-      portName,
-      {},
-    );
-    foreground = new ForegroundDerivedState(deriveDefinition, memoryStorage, portName, ngZone);
   });
 
   afterEach(() => {
@@ -72,21 +64,13 @@ describe("foreground background derived state interactions", () => {
   });
 
   it("should initialize a late-connected foreground", async () => {
-    const newForeground = new ForegroundDerivedState(
+    const newForeground = new ForegroundDerivedState(deriveDefinition, portName, ngZone);
-      deriveDefinition,
+    const backgroundTracker = new ObservableTracker(background.state$);
-      memoryStorage,
-      portName,
-      ngZone,
-    );
-    const backgroundEmissions = trackEmissions(background.state$);
     parentState$.next(initialParent);
-    await awaitAsync();
+    const foregroundTracker = new ObservableTracker(newForeground.state$);
 
-    const foregroundEmissions = trackEmissions(newForeground.state$);
+    expect(await backgroundTracker.expectEmission()).toEqual(new Date(initialParent));
-    await awaitAsync(10);
+    expect(await foregroundTracker.expectEmission()).toEqual(new Date(initialParent));
-
-    expect(backgroundEmissions).toEqual([new Date(initialParent)]);
-    expect(foregroundEmissions).toEqual([new Date(initialParent)]);
   });
 
   describe("forceValue", () => {

apps/browser/src/platform/state/foreground-derived-state.provider.ts

@@ -1,11 +1,6 @@
 import { NgZone } from "@angular/core";
 import { Observable } from "rxjs";
 
-import {
-  AbstractStorageService,
-  ObservableStorageService,
-} from "@bitwarden/common/platform/abstractions/storage.service";
-import { StorageServiceProvider } from "@bitwarden/common/platform/services/storage-service.provider";
 import { DeriveDefinition, DerivedState } from "@bitwarden/common/platform/state";
 // eslint-disable-next-line import/no-restricted-paths -- extending this class for this client
 import { DefaultDerivedStateProvider } from "@bitwarden/common/platform/state/implementations/default-derived-state.provider";
@@ -14,23 +9,17 @@ import { DerivedStateDependencies } from "@bitwarden/common/src/types/state";
 import { ForegroundDerivedState } from "./foreground-derived-state";
 
 export class ForegroundDerivedStateProvider extends DefaultDerivedStateProvider {
-  constructor(
+  constructor(private ngZone: NgZone) {
-    storageServiceProvider: StorageServiceProvider,
+    super();
-    private ngZone: NgZone,
-  ) {
-    super(storageServiceProvider);
   }
   override buildDerivedState<TFrom, TTo, TDeps extends DerivedStateDependencies>(
     _parentState$: Observable<TFrom>,
     deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
     _dependencies: TDeps,
-    storageLocation: [string, AbstractStorageService & ObservableStorageService],
   ): DerivedState<TTo> {
-    const [location, storageService] = storageLocation;
     return new ForegroundDerivedState(
       deriveDefinition,
-      storageService,
+      deriveDefinition.buildCacheKey(),
-      deriveDefinition.buildCacheKey(location),
       this.ngZone,
     );
   }

apps/browser/src/platform/state/foreground-derived-state.spec.ts

@@ -1,11 +1,5 @@
-/**
- * need to update test environment so structuredClone works appropriately
- * @jest-environment ../../libs/shared/test.environment.ts
- */
-
 import { NgZone } from "@angular/core";
-import { awaitAsync, trackEmissions } from "@bitwarden/common/../spec";
+import { awaitAsync } from "@bitwarden/common/../spec";
-import { FakeStorageService } from "@bitwarden/common/../spec/fake-storage.service";
 import { mock } from "jest-mock-extended";
 
 import { DeriveDefinition } from "@bitwarden/common/platform/state";
@@ -32,15 +26,12 @@ jest.mock("../browser/run-inside-angular.operator", () => {
 
 describe("ForegroundDerivedState", () => {
   let sut: ForegroundDerivedState<Date>;
-  let memoryStorage: FakeStorageService;
   const portName = "testPort";
   const ngZone = mock<NgZone>();
 
   beforeEach(() => {
-    memoryStorage = new FakeStorageService();
-    memoryStorage.internalUpdateValuesRequireDeserialization(true);
     mockPorts();
-    sut = new ForegroundDerivedState(deriveDefinition, memoryStorage, portName, ngZone);
+    sut = new ForegroundDerivedState(deriveDefinition, portName, ngZone);
   });
 
   afterEach(() => {
@@ -67,18 +58,4 @@ describe("ForegroundDerivedState", () => {
     expect(disconnectSpy).toHaveBeenCalled();
     expect(sut["port"]).toBeNull();
   });
-
-  it("should emit when the memory storage updates", async () => {
-    const dateString = "2020-01-01";
-    const emissions = trackEmissions(sut.state$);
-
-    await memoryStorage.save(deriveDefinition.storageKey, {
-      derived: true,
-      value: new Date(dateString),
-    });
-
-    await awaitAsync();
-
-    expect(emissions).toEqual([new Date(dateString)]);
-  });
 });

apps/browser/src/platform/state/foreground-derived-state.ts

@@ -6,19 +6,14 @@ import {
   filter,
   firstValueFrom,
   map,
-  merge,
   of,
   share,
   switchMap,
   tap,
   timer,
 } from "rxjs";
-import { Jsonify, JsonObject } from "type-fest";
+import { Jsonify } from "type-fest";
 
-import {
-  AbstractStorageService,
-  ObservableStorageService,
-} from "@bitwarden/common/platform/abstractions/storage.service";
 import { Utils } from "@bitwarden/common/platform/misc/utils";
 import { DeriveDefinition, DerivedState } from "@bitwarden/common/platform/state";
 import { DerivedStateDependencies } from "@bitwarden/common/types/state";
@@ -27,41 +22,28 @@ import { fromChromeEvent } from "../browser/from-chrome-event";
 import { runInsideAngular } from "../browser/run-inside-angular.operator";
 
 export class ForegroundDerivedState<TTo> implements DerivedState<TTo> {
-  private storageKey: string;
   private port: chrome.runtime.Port;
   private backgroundResponses$: Observable<DerivedStateMessage>;
   state$: Observable<TTo>;
 
   constructor(
     private deriveDefinition: DeriveDefinition<unknown, TTo, DerivedStateDependencies>,
-    private memoryStorage: AbstractStorageService & ObservableStorageService,
     private portName: string,
     private ngZone: NgZone,
   ) {
-    this.storageKey = deriveDefinition.storageKey;
+    const latestValueFromPort$ = (port: chrome.runtime.Port) => {
-
+      return fromChromeEvent(port.onMessage).pipe(
-    const initialStorageGet$ = defer(() => {
+        map(([message]) => message as DerivedStateMessage),
-      return this.getStoredValue();
+        filter((message) => message.originator === "background" && message.action === "nextState"),
-    }).pipe(
+        map((message) => {
-      filter((s) => s.derived),
+          const json = JSON.parse(message.data) as Jsonify<TTo>;
-      map((s) => s.value),
+          return this.deriveDefinition.deserialize(json);
-    );
+        }),
-
+      );
-    const latestStorage$ = this.memoryStorage.updates$.pipe(
+    };
-      filter((s) => s.key === this.storageKey),
-      switchMap(async (storageUpdate) => {
-        if (storageUpdate.updateType === "remove") {
-          return null;
-        }
-
-        return await this.getStoredValue();
-      }),
-      filter((s) => s?.derived === true), // A "remove" storage update will return us null
-      map((s) => s.value),
-    );
 
     this.state$ = defer(() => of(this.initializePort())).pipe(
-      switchMap(() => merge(initialStorageGet$, latestStorage$)),
+      switchMap(() => latestValueFromPort$(this.port)),
       share({
         connector: () => new ReplaySubject<TTo>(1),
         resetOnRefCountZero: () =>
@@ -130,28 +112,4 @@ export class ForegroundDerivedState<TTo> implements DerivedState<TTo> {
     this.port = null;
     this.backgroundResponses$ = null;
   }
-
-  protected async getStoredValue(): Promise<{ derived: boolean; value: TTo | null }> {
-    if (this.memoryStorage.valuesRequireDeserialization) {
-      const storedJson = await this.memoryStorage.get<
-        Jsonify<{ derived: true; value: JsonObject }>
-      >(this.storageKey);
-
-      if (!storedJson?.derived) {
-        return { derived: false, value: null };
-      }
-
-      const value = this.deriveDefinition.deserialize(storedJson.value as any);
-
-      return { derived: true, value };
-    } else {
-      const stored = await this.memoryStorage.get<{ derived: true; value: TTo }>(this.storageKey);
-
-      if (!stored?.derived) {
-        return { derived: false, value: null };
-      }
-
-      return { derived: true, value: stored.value };
-    }
-  }
 }

apps/browser/src/popup/services/services.module.ts

@@ -473,7 +473,7 @@ const safeProviders: SafeProvider[] = [
   safeProvider({
     provide: DerivedStateProvider,
     useClass: ForegroundDerivedStateProvider,
-    deps: [StorageServiceProvider, NgZone],
+    deps: [NgZone],
   }),
   safeProvider({
     provide: AutofillSettingsServiceAbstraction,

apps/cli/src/bw.ts

@@ -314,7 +314,7 @@ export class Main {
       this.singleUserStateProvider,
     );
 
-    this.derivedStateProvider = new DefaultDerivedStateProvider(storageServiceProvider);
+    this.derivedStateProvider = new DefaultDerivedStateProvider();
 
     this.stateProvider = new DefaultStateProvider(
       this.activeUserStateProvider,

apps/desktop/src/main.ts

@@ -157,7 +157,7 @@ export class Main {
       activeUserStateProvider,
       singleUserStateProvider,
       globalStateProvider,
-      new DefaultDerivedStateProvider(storageServiceProvider),
+      new DefaultDerivedStateProvider(),
     );
 
     this.environmentService = new DefaultEnvironmentService(stateProvider, accountService);

libs/angular/src/services/jslib-services.module.ts

@@ -1047,7 +1047,7 @@ const safeProviders: SafeProvider[] = [
   safeProvider({
     provide: DerivedStateProvider,
     useClass: DefaultDerivedStateProvider,
-    deps: [StorageServiceProvider],
+    deps: [],
   }),
   safeProvider({
     provide: StateProvider,

libs/common/spec/fake-state-provider.ts

@@ -249,11 +249,11 @@ export class FakeDerivedStateProvider implements DerivedStateProvider {
     deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
     dependencies: TDeps,
   ): DerivedState<TTo> {
-    let result = this.states.get(deriveDefinition.buildCacheKey("memory")) as DerivedState<TTo>;
+    let result = this.states.get(deriveDefinition.buildCacheKey()) as DerivedState<TTo>;
 
     if (result == null) {
       result = new FakeDerivedState(parentState$, deriveDefinition, dependencies);
-      this.states.set(deriveDefinition.buildCacheKey("memory"), result);
+      this.states.set(deriveDefinition.buildCacheKey(), result);
     }
     return result;
   }

libs/common/spec/index.ts

@@ -5,3 +5,4 @@ export * from "./fake-state-provider";
 export * from "./fake-state";
 export * from "./fake-account-service";
 export * from "./fake-storage.service";
+export * from "./observable-tracker";

libs/common/spec/observable-tracker.ts

@@ -16,9 +16,11 @@ export class ObservableTracker<T> {
   /**
    * Awaits the next emission from the observable, or throws if the timeout is exceeded
    * @param msTimeout The maximum time to wait for another emission before throwing
+   * @returns The next emission from the observable
+   * @throws If the timeout is exceeded
    */
-  async expectEmission(msTimeout = 50) {
+  async expectEmission(msTimeout = 50): Promise<T> {
-    await firstValueFrom(
+    return await firstValueFrom(
       this.observable.pipe(
         timeout({
           first: msTimeout,

libs/common/src/platform/state/derive-definition.ts

@@ -171,8 +171,8 @@ export class DeriveDefinition<TFrom, TTo, TDeps extends DerivedStateDependencies
     return this.options.clearOnCleanup ?? true;
   }
 
-  buildCacheKey(location: string): string {
+  buildCacheKey(): string {
-    return `derived_${location}_${this.stateDefinition.name}_${this.uniqueDerivationName}`;
+    return `derived_${this.stateDefinition.name}_${this.uniqueDerivationName}`;
   }
 
   /**

libs/common/src/platform/state/implementations/default-derived-state.provider.ts

@@ -1,11 +1,6 @@
 import { Observable } from "rxjs";
 
 import { DerivedStateDependencies } from "../../../types/state";
-import {
-  AbstractStorageService,
-  ObservableStorageService,
-} from "../../abstractions/storage.service";
-import { StorageServiceProvider } from "../../services/storage-service.provider";
 import { DeriveDefinition } from "../derive-definition";
 import { DerivedState } from "../derived-state";
 import { DerivedStateProvider } from "../derived-state.provider";
@@ -15,18 +10,14 @@ import { DefaultDerivedState } from "./default-derived-state";
 export class DefaultDerivedStateProvider implements DerivedStateProvider {
   private cache: Record<string, DerivedState<unknown>> = {};
 
-  constructor(protected storageServiceProvider: StorageServiceProvider) {}
+  constructor() {}
 
   get<TFrom, TTo, TDeps extends DerivedStateDependencies>(
     parentState$: Observable<TFrom>,
     deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
     dependencies: TDeps,
   ): DerivedState<TTo> {
-    // TODO: we probably want to support optional normal memory storage for browser
+    const cacheKey = deriveDefinition.buildCacheKey();
-    const [location, storageService] = this.storageServiceProvider.get("memory", {
-      browser: "memory-large-object",
-    });
-    const cacheKey = deriveDefinition.buildCacheKey(location);
     const existingDerivedState = this.cache[cacheKey];
     if (existingDerivedState != null) {
       // I have to cast out of the unknown generic but this should be safe if rules
@@ -34,10 +25,7 @@ export class DefaultDerivedStateProvider implements DerivedStateProvider {
       return existingDerivedState as DefaultDerivedState<TFrom, TTo, TDeps>;
     }
 
-    const newDerivedState = this.buildDerivedState(parentState$, deriveDefinition, dependencies, [
+    const newDerivedState = this.buildDerivedState(parentState$, deriveDefinition, dependencies);
-      location,
-      storageService,
-    ]);
     this.cache[cacheKey] = newDerivedState;
     return newDerivedState;
   }
@@ -46,13 +34,7 @@ export class DefaultDerivedStateProvider implements DerivedStateProvider {
     parentState$: Observable<TFrom>,
     deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
     dependencies: TDeps,
-    storageLocation: [string, AbstractStorageService & ObservableStorageService],
   ): DerivedState<TTo> {
-    return new DefaultDerivedState<TFrom, TTo, TDeps>(
+    return new DefaultDerivedState<TFrom, TTo, TDeps>(parentState$, deriveDefinition, dependencies);
-      parentState$,
-      deriveDefinition,
-      storageLocation[1],
-      dependencies,
-    );
   }
 }

libs/common/src/platform/state/implementations/default-derived-state.spec.ts

@@ -5,7 +5,6 @@
 import { Subject, firstValueFrom } from "rxjs";
 
 import { awaitAsync, trackEmissions } from "../../../../spec";
-import { FakeStorageService } from "../../../../spec/fake-storage.service";
 import { DeriveDefinition } from "../derive-definition";
 import { StateDefinition } from "../state-definition";
 
@@ -29,7 +28,6 @@ const deriveDefinition = new DeriveDefinition<string, Date, { date: Date }>(
 
 describe("DefaultDerivedState", () => {
   let parentState$: Subject<string>;
-  let memoryStorage: FakeStorageService;
   let sut: DefaultDerivedState<string, Date, { date: Date }>;
   const deps = {
     date: new Date(),
@@ -38,8 +36,7 @@ describe("DefaultDerivedState", () => {
   beforeEach(() => {
     callCount = 0;
     parentState$ = new Subject();
-    memoryStorage = new FakeStorageService();
+    sut = new DefaultDerivedState(parentState$, deriveDefinition, deps);
-    sut = new DefaultDerivedState(parentState$, deriveDefinition, memoryStorage, deps);
   });
 
   afterEach(() => {
@@ -66,71 +63,33 @@ describe("DefaultDerivedState", () => {
     expect(callCount).toBe(1);
   });
 
-  it("should store the derived state in memory", async () => {
-    const dateString = "2020-01-01";
-    trackEmissions(sut.state$);
-    parentState$.next(dateString);
-    await awaitAsync();
-
-    expect(memoryStorage.internalStore[deriveDefinition.storageKey]).toEqual(
-      derivedValue(new Date(dateString)),
-    );
-    const calls = memoryStorage.mock.save.mock.calls;
-    expect(calls.length).toBe(1);
-    expect(calls[0][0]).toBe(deriveDefinition.storageKey);
-    expect(calls[0][1]).toEqual(derivedValue(new Date(dateString)));
-  });
-
   describe("forceValue", () => {
     const initialParentValue = "2020-01-01";
     const forced = new Date("2020-02-02");
     let emissions: Date[];
 
-    describe("without observers", () => {
+    beforeEach(async () => {
-      beforeEach(async () => {
+      emissions = trackEmissions(sut.state$);
-        parentState$.next(initialParentValue);
+      parentState$.next(initialParentValue);
-        await awaitAsync();
+      await awaitAsync();
-      });
-
-      it("should store the forced value", async () => {
-        await sut.forceValue(forced);
-        expect(memoryStorage.internalStore[deriveDefinition.storageKey]).toEqual(
-          derivedValue(forced),
-        );
-      });
     });
 
-    describe("with observers", () => {
+    it("should force the value", async () => {
-      beforeEach(async () => {
+      await sut.forceValue(forced);
-        emissions = trackEmissions(sut.state$);
+      expect(emissions).toEqual([new Date(initialParentValue), forced]);
-        parentState$.next(initialParentValue);
+    });
-        await awaitAsync();
-      });
 
-      it("should store the forced value", async () => {
+    it("should only force the value once", async () => {
-        await sut.forceValue(forced);
+      await sut.forceValue(forced);
-        expect(memoryStorage.internalStore[deriveDefinition.storageKey]).toEqual(
-          derivedValue(forced),
-        );
-      });
 
-      it("should force the value", async () => {
+      parentState$.next(initialParentValue);
-        await sut.forceValue(forced);
+      await awaitAsync();
-        expect(emissions).toEqual([new Date(initialParentValue), forced]);
-      });
 
-      it("should only force the value once", async () => {
+      expect(emissions).toEqual([
-        await sut.forceValue(forced);
+        new Date(initialParentValue),
-
+        forced,
-        parentState$.next(initialParentValue);
+        new Date(initialParentValue),
-        await awaitAsync();
+      ]);
-
-        expect(emissions).toEqual([
-          new Date(initialParentValue),
-          forced,
-          new Date(initialParentValue),
-        ]);
-      });
     });
   });
 
@@ -148,42 +107,6 @@ describe("DefaultDerivedState", () => {
       expect(parentState$.observed).toBe(false);
     });
 
-    it("should clear state after cleanup", async () => {
-      const subscription = sut.state$.subscribe();
-      parentState$.next(newDate);
-      await awaitAsync();
-
-      expect(memoryStorage.internalStore[deriveDefinition.storageKey]).toEqual(
-        derivedValue(new Date(newDate)),
-      );
-
-      subscription.unsubscribe();
-      // Wait for cleanup
-      await awaitAsync(cleanupDelayMs * 2);
-
-      expect(memoryStorage.internalStore[deriveDefinition.storageKey]).toBeUndefined();
-    });
-
-    it("should not clear state after cleanup if clearOnCleanup is false", async () => {
-      deriveDefinition.options.clearOnCleanup = false;
-
-      const subscription = sut.state$.subscribe();
-      parentState$.next(newDate);
-      await awaitAsync();
-
-      expect(memoryStorage.internalStore[deriveDefinition.storageKey]).toEqual(
-        derivedValue(new Date(newDate)),
-      );
-
-      subscription.unsubscribe();
-      // Wait for cleanup
-      await awaitAsync(cleanupDelayMs * 2);
-
-      expect(memoryStorage.internalStore[deriveDefinition.storageKey]).toEqual(
-        derivedValue(new Date(newDate)),
-      );
-    });
-
     it("should not cleanup if there are still subscribers", async () => {
       const subscription1 = sut.state$.subscribe();
       const sub2Emissions: Date[] = [];
@@ -260,7 +183,3 @@ describe("DefaultDerivedState", () => {
     });
   });
 });
-
-function derivedValue<T>(value: T) {
-  return { derived: true, value };
-}

libs/common/src/platform/state/implementations/default-derived-state.ts

@@ -1,10 +1,6 @@
 import { Observable, ReplaySubject, Subject, concatMap, merge, share, timer } from "rxjs";
 
 import { DerivedStateDependencies } from "../../../types/state";
-import {
-  AbstractStorageService,
-  ObservableStorageService,
-} from "../../abstractions/storage.service";
 import { DeriveDefinition } from "../derive-definition";
 import { DerivedState } from "../derived-state";
 
@@ -22,7 +18,6 @@ export class DefaultDerivedState<TFrom, TTo, TDeps extends DerivedStateDependenc
   constructor(
     private parentState$: Observable<TFrom>,
     protected deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
-    private memoryStorage: AbstractStorageService & ObservableStorageService,
     private dependencies: TDeps,
   ) {
     this.storageKey = deriveDefinition.storageKey;
@@ -34,7 +29,6 @@ export class DefaultDerivedState<TFrom, TTo, TDeps extends DerivedStateDependenc
           derivedStateOrPromise = await derivedStateOrPromise;
         }
         const derivedState = derivedStateOrPromise;
-        await this.storeValue(derivedState);
         return derivedState;
       }),
     );
@@ -44,26 +38,13 @@ export class DefaultDerivedState<TFrom, TTo, TDeps extends DerivedStateDependenc
         connector: () => {
           return new ReplaySubject<TTo>(1);
         },
-        resetOnRefCountZero: () =>
+        resetOnRefCountZero: () => timer(this.deriveDefinition.cleanupDelayMs),
-          timer(this.deriveDefinition.cleanupDelayMs).pipe(
-            concatMap(async () => {
-              if (this.deriveDefinition.clearOnCleanup) {
-                await this.memoryStorage.remove(this.storageKey);
-              }
-              return true;
-            }),
-          ),
       }),
     );
   }
 
   async forceValue(value: TTo) {
-    await this.storeValue(value);
     this.forcedValueSubject.next(value);
     return value;
   }
-
-  private storeValue(value: TTo) {
-    return this.memoryStorage.save(this.storageKey, { derived: true, value });
-  }
 }