[PM-8292] Fixup ForegroundSyncService (#9292)

* Change `object` to `Record<string, unknown>`

* Change `object` to `Record<string, unknown>` Pt. 2

* Update ForegroundSyncService

- Manage finish message in the listener to more gaurantee a message back
- Make the timeout much longer
- Allow it to throw if the background sync service threw

---------

Co-authored-by: Cesar Gonzalez <cesar.a.gonzalezcs@gmail.com>

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

@@ -334,7 +334,7 @@ export default class MainBackground {
   ssoLoginService: SsoLoginServiceAbstraction;
   billingAccountProfileStateService: BillingAccountProfileStateService;
   // eslint-disable-next-line rxjs/no-exposed-subjects -- Needed to give access to services module
-  intraprocessMessagingSubject: Subject<Message<object>>;
+  intraprocessMessagingSubject: Subject<Message<Record<string, unknown>>>;
   userAutoUnlockKeyService: UserAutoUnlockKeyService;
   scriptInjectorService: BrowserScriptInjectorService;
   kdfConfigService: kdfConfigServiceAbstraction;
@@ -384,7 +384,7 @@ export default class MainBackground {
     this.keyGenerationService = new KeyGenerationService(this.cryptoFunctionService);
     this.storageService = new BrowserLocalStorageService();
 
-    this.intraprocessMessagingSubject = new Subject<Message<object>>();
+    this.intraprocessMessagingSubject = new Subject<Message<Record<string, unknown>>>();
 
     this.messagingService = MessageSender.combine(
       new SubjectMessageSender(this.intraprocessMessagingSubject),
@@ -840,7 +840,12 @@ export default class MainBackground {
         this.authService,
       );
 
-      this.syncServiceListener = new SyncServiceListener(this.syncService, messageListener);
+      this.syncServiceListener = new SyncServiceListener(
+        this.syncService,
+        messageListener,
+        this.messagingService,
+        this.logService,
+      );
     }
     this.eventUploadService = new EventUploadService(
       this.apiService,
@@ -1170,7 +1175,7 @@ export default class MainBackground {
     this.contextMenusBackground?.init();
     await this.idleBackground.init();
     this.webRequestBackground?.startListening();
-    this.syncServiceListener?.startListening();
+    this.syncServiceListener?.listener$().subscribe();
 
     return new Promise<void>((resolve) => {
       setTimeout(async () => {

apps/browser/src/platform/messaging/chrome-message.sender.ts

@@ -15,9 +15,9 @@ const HANDLED_ERRORS: Record<string, ErrorHandler> = {
 export class ChromeMessageSender implements MessageSender {
   constructor(private readonly logService: LogService) {}
 
-  send<T extends object>(
+  send<T extends Record<string, unknown>>(
     commandDefinition: string | CommandDefinition<T>,
-    payload: object | T = {},
+    payload: Record<string, unknown> | T = {},
   ): void {
     const command = getCommand(commandDefinition);
     chrome.runtime.sendMessage(Object.assign(payload, { command: command }), () => {

apps/browser/src/platform/sync/foreground-sync.service.spec.ts

@@ -0,0 +1,130 @@
+import { mock } from "jest-mock-extended";
+import { Subject } from "rxjs";
+
+import { ApiService } from "@bitwarden/common/abstractions/api.service";
+import { AccountService } from "@bitwarden/common/auth/abstractions/account.service";
+import { AuthService } from "@bitwarden/common/auth/abstractions/auth.service";
+import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
+import { StateService } from "@bitwarden/common/platform/abstractions/state.service";
+import { MessageListener, MessageSender } from "@bitwarden/common/platform/messaging";
+import { SendApiService } from "@bitwarden/common/tools/send/services/send-api.service.abstraction";
+import { InternalSendService } from "@bitwarden/common/tools/send/services/send.service.abstraction";
+import { CipherService } from "@bitwarden/common/vault/abstractions/cipher.service";
+import { CollectionService } from "@bitwarden/common/vault/abstractions/collection.service";
+import { FolderApiServiceAbstraction } from "@bitwarden/common/vault/abstractions/folder/folder-api.service.abstraction";
+import { InternalFolderService } from "@bitwarden/common/vault/abstractions/folder/folder.service.abstraction";
+
+import { DO_FULL_SYNC, ForegroundSyncService, FullSyncMessage } from "./foreground-sync.service";
+import { FullSyncFinishedMessage } from "./sync-service.listener";
+
+describe("ForegroundSyncService", () => {
+  const stateService = mock<StateService>();
+  const folderService = mock<InternalFolderService>();
+  const folderApiService = mock<FolderApiServiceAbstraction>();
+  const messageSender = mock<MessageSender>();
+  const logService = mock<LogService>();
+  const cipherService = mock<CipherService>();
+  const collectionService = mock<CollectionService>();
+  const apiService = mock<ApiService>();
+  const accountService = mock<AccountService>();
+  const authService = mock<AuthService>();
+  const sendService = mock<InternalSendService>();
+  const sendApiService = mock<SendApiService>();
+  const messageListener = mock<MessageListener>();
+
+  const sut = new ForegroundSyncService(
+    stateService,
+    folderService,
+    folderApiService,
+    messageSender,
+    logService,
+    cipherService,
+    collectionService,
+    apiService,
+    accountService,
+    authService,
+    sendService,
+    sendApiService,
+    messageListener,
+  );
+
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
+  describe("fullSync", () => {
+    const getAndAssertRequestId = (doFullSyncMessage: Omit<FullSyncMessage, "requestId">) => {
+      expect(messageSender.send).toHaveBeenCalledWith(
+        DO_FULL_SYNC,
+        // We don't know the request id since that is created internally
+        expect.objectContaining(doFullSyncMessage),
+      );
+
+      const message = messageSender.send.mock.calls[0][1];
+
+      if (!("requestId" in message) || typeof message.requestId !== "string") {
+        throw new Error("requestId property of type string was expected on the sent message.");
+      }
+
+      return message.requestId;
+    };
+
+    it("correctly relays a successful fullSync", async () => {
+      const messages = new Subject<FullSyncFinishedMessage>();
+      messageListener.messages$.mockReturnValue(messages);
+      const fullSyncPromise = sut.fullSync(true, false);
+      expect(sut.syncInProgress).toBe(true);
+
+      const requestId = getAndAssertRequestId({ forceSync: true, allowThrowOnError: false });
+
+      // Pretend the sync has finished
+      messages.next({ successfully: true, errorMessage: null, requestId: requestId });
+
+      const result = await fullSyncPromise;
+
+      expect(sut.syncInProgress).toBe(false);
+      expect(result).toBe(true);
+    });
+
+    it("correctly relays an unsuccessful fullSync but does not throw if allowThrowOnError = false", async () => {
+      const messages = new Subject<FullSyncFinishedMessage>();
+      messageListener.messages$.mockReturnValue(messages);
+      const fullSyncPromise = sut.fullSync(false, false);
+      expect(sut.syncInProgress).toBe(true);
+
+      const requestId = getAndAssertRequestId({ forceSync: false, allowThrowOnError: false });
+
+      // Pretend the sync has finished
+      messages.next({
+        successfully: false,
+        errorMessage: "Error while syncing",
+        requestId: requestId,
+      });
+
+      const result = await fullSyncPromise;
+
+      expect(sut.syncInProgress).toBe(false);
+      expect(result).toBe(false);
+    });
+
+    it("correctly relays an unsuccessful fullSync but and will throw if allowThrowOnError = true", async () => {
+      const messages = new Subject<FullSyncFinishedMessage>();
+      messageListener.messages$.mockReturnValue(messages);
+      const fullSyncPromise = sut.fullSync(true, true);
+      expect(sut.syncInProgress).toBe(true);
+
+      const requestId = getAndAssertRequestId({ forceSync: true, allowThrowOnError: true });
+
+      // Pretend the sync has finished
+      messages.next({
+        successfully: false,
+        errorMessage: "Error while syncing",
+        requestId: requestId,
+      });
+
+      await expect(fullSyncPromise).rejects.toThrow("Error while syncing");
+
+      expect(sut.syncInProgress).toBe(false);
+    });
+  });
+});

apps/browser/src/platform/sync/foreground-sync.service.ts

@@ -1,4 +1,4 @@
-import { firstValueFrom, timeout } from "rxjs";
+import { filter, firstValueFrom, of, timeout } from "rxjs";
 
 import { ApiService } from "@bitwarden/common/abstractions/api.service";
 import { AccountService } from "@bitwarden/common/auth/abstractions/account.service";
@@ -10,6 +10,7 @@ import {
   MessageListener,
   MessageSender,
 } from "@bitwarden/common/platform/messaging";
+import { Utils } from "@bitwarden/common/platform/misc/utils";
 import { CoreSyncService } from "@bitwarden/common/platform/sync/internal";
 import { SendApiService } from "@bitwarden/common/tools/send/services/send-api.service.abstraction";
 import { InternalSendService } from "@bitwarden/common/tools/send/services/send.service.abstraction";
@@ -18,11 +19,11 @@ import { CollectionService } from "@bitwarden/common/vault/abstractions/collecti
 import { FolderApiServiceAbstraction } from "@bitwarden/common/vault/abstractions/folder/folder-api.service.abstraction";
 import { InternalFolderService } from "@bitwarden/common/vault/abstractions/folder/folder.service.abstraction";
 
-const SYNC_COMPLETED = new CommandDefinition<{ successfully: boolean }>("syncCompleted");
-export const DO_FULL_SYNC = new CommandDefinition<{
-  forceSync: boolean;
-  allowThrowOnError: boolean;
-}>("doFullSync");
+import { FULL_SYNC_FINISHED } from "./sync-service.listener";
+
+export type FullSyncMessage = { forceSync: boolean; allowThrowOnError: boolean; requestId: string };
+
+export const DO_FULL_SYNC = new CommandDefinition<FullSyncMessage>("doFullSync");
 
 export class ForegroundSyncService extends CoreSyncService {
   constructor(
@@ -59,18 +60,29 @@ export class ForegroundSyncService extends CoreSyncService {
   async fullSync(forceSync: boolean, allowThrowOnError: boolean = false): Promise<boolean> {
     this.syncInProgress = true;
     try {
+      const requestId = Utils.newGuid();
       const syncCompletedPromise = firstValueFrom(
-        this.messageListener.messages$(SYNC_COMPLETED).pipe(
+        this.messageListener.messages$(FULL_SYNC_FINISHED).pipe(
+          filter((m) => m.requestId === requestId),
           timeout({
-            first: 10_000,
+            first: 30_000,
+            // If we haven't heard back in 30 seconds, just pretend we heard back about an unsuccesful sync.
             with: () => {
-              throw new Error("Timeout while doing a fullSync call.");
+              this.logService.warning(
+                "ForegroundSyncService did not receive a message back in a reasonable time.",
+              );
+              return of({ successfully: false, errorMessage: "Sync timed out." });
             },
           }),
         ),
       );
-      this.messageSender.send(DO_FULL_SYNC, { forceSync, allowThrowOnError });
+      this.messageSender.send(DO_FULL_SYNC, { forceSync, allowThrowOnError, requestId });
       const result = await syncCompletedPromise;
+
+      if (allowThrowOnError && result.errorMessage != null) {
+        throw new Error(result.errorMessage);
+      }
+
       return result.successfully;
     } finally {
       this.syncInProgress = false;

apps/browser/src/platform/sync/sync-service.listener.spec.ts

@@ -0,0 +1,60 @@
+import { mock } from "jest-mock-extended";
+import { Subject, firstValueFrom } from "rxjs";
+
+import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
+import { MessageListener, MessageSender } from "@bitwarden/common/platform/messaging";
+import { tagAsExternal } from "@bitwarden/common/platform/messaging/helpers";
+import { SyncService } from "@bitwarden/common/vault/abstractions/sync/sync.service.abstraction";
+
+import { FullSyncMessage } from "./foreground-sync.service";
+import { FULL_SYNC_FINISHED, SyncServiceListener } from "./sync-service.listener";
+
+describe("SyncServiceListener", () => {
+  const syncService = mock<SyncService>();
+  const messageListener = mock<MessageListener>();
+  const messageSender = mock<MessageSender>();
+  const logService = mock<LogService>();
+
+  const messages = new Subject<FullSyncMessage>();
+  messageListener.messages$.mockReturnValue(messages.asObservable().pipe(tagAsExternal()));
+  const sut = new SyncServiceListener(syncService, messageListener, messageSender, logService);
+
+  describe("listener$", () => {
+    it.each([true, false])(
+      "calls full sync and relays outcome when sync is [successfully = %s]",
+      async (value) => {
+        const listener = sut.listener$();
+        const emissionPromise = firstValueFrom(listener);
+
+        syncService.fullSync.mockResolvedValueOnce(value);
+        messages.next({ forceSync: true, allowThrowOnError: false, requestId: "1" });
+
+        await emissionPromise;
+
+        expect(syncService.fullSync).toHaveBeenCalledWith(true, false);
+        expect(messageSender.send).toHaveBeenCalledWith(FULL_SYNC_FINISHED, {
+          successfully: value,
+          errorMessage: null,
+          requestId: "1",
+        });
+      },
+    );
+
+    it("calls full sync and relays error message through messaging", async () => {
+      const listener = sut.listener$();
+      const emissionPromise = firstValueFrom(listener);
+
+      syncService.fullSync.mockRejectedValueOnce(new Error("SyncError"));
+      messages.next({ forceSync: true, allowThrowOnError: false, requestId: "1" });
+
+      await emissionPromise;
+
+      expect(syncService.fullSync).toHaveBeenCalledWith(true, false);
+      expect(messageSender.send).toHaveBeenCalledWith(FULL_SYNC_FINISHED, {
+        successfully: false,
+        errorMessage: "SyncError",
+        requestId: "1",
+      });
+    });
+  });
+});

apps/browser/src/platform/sync/sync-service.listener.ts

@@ -1,25 +1,58 @@
-import { Subscription, concatMap, filter } from "rxjs";
+import { Observable, concatMap, filter } from "rxjs";
 
-import { MessageListener, isExternalMessage } from "@bitwarden/common/platform/messaging";
+import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
+import {
+  CommandDefinition,
+  MessageListener,
+  MessageSender,
+  isExternalMessage,
+} from "@bitwarden/common/platform/messaging";
 import { SyncService } from "@bitwarden/common/vault/abstractions/sync/sync.service.abstraction";
 
 import { DO_FULL_SYNC } from "./foreground-sync.service";
 
+export type FullSyncFinishedMessage = {
+  successfully: boolean;
+  errorMessage: string;
+  requestId: string;
+};
+
+export const FULL_SYNC_FINISHED = new CommandDefinition<FullSyncFinishedMessage>(
+  "fullSyncFinished",
+);
+
 export class SyncServiceListener {
   constructor(
     private readonly syncService: SyncService,
     private readonly messageListener: MessageListener,
+    private readonly messageSender: MessageSender,
+    private readonly logService: LogService,
   ) {}
 
-  startListening(): Subscription {
-    return this.messageListener
-      .messages$(DO_FULL_SYNC)
-      .pipe(
+  listener$(): Observable<void> {
+    return this.messageListener.messages$(DO_FULL_SYNC).pipe(
       filter((message) => isExternalMessage(message)),
-        concatMap(async ({ forceSync, allowThrowOnError }) => {
-          await this.syncService.fullSync(forceSync, allowThrowOnError);
+      concatMap(async ({ forceSync, allowThrowOnError, requestId }) => {
+        await this.doFullSync(forceSync, allowThrowOnError, requestId);
       }),
-      )
-      .subscribe();
+    );
+  }
+
+  private async doFullSync(forceSync: boolean, allowThrowOnError: boolean, requestId: string) {
+    try {
+      const result = await this.syncService.fullSync(forceSync, allowThrowOnError);
+      this.messageSender.send(FULL_SYNC_FINISHED, {
+        successfully: result,
+        errorMessage: null,
+        requestId,
+      });
+    } catch (err) {
+      this.logService.warning("Error while doing full sync in SyncServiceListener", err);
+      this.messageSender.send(FULL_SYNC_FINISHED, {
+        successfully: false,
+        errorMessage: err?.message ?? "Unknown Sync Error",
+        requestId,
+      });
+    }
   }
 }

apps/browser/src/platform/utils/from-chrome-runtime-messaging.ts

@@ -1,5 +1,6 @@
 import { map, share } from "rxjs";
 
+import { Message } from "@bitwarden/common/platform/messaging";
 import { tagAsExternal } from "@bitwarden/common/platform/messaging/internal";
 
 import { fromChromeEvent } from "../browser/from-chrome-event";
@@ -20,7 +21,7 @@ export const fromChromeRuntimeMessaging = () => {
 
       return message;
     }),
-    tagAsExternal,
+    tagAsExternal<Message<Record<string, unknown>>>(),
     share(),
   );
 };

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

@@ -524,7 +524,7 @@ const safeProviders: SafeProvider[] = [
   }),
   safeProvider({
     provide: MessageListener,
-    useFactory: (subject: Subject<Message<object>>, ngZone: NgZone) =>
+    useFactory: (subject: Subject<Message<Record<string, unknown>>>, ngZone: NgZone) =>
       new MessageListener(
         merge(
           subject.asObservable(), // For messages in the same context
@@ -535,7 +535,7 @@ const safeProviders: SafeProvider[] = [
   }),
   safeProvider({
     provide: MessageSender,
-    useFactory: (subject: Subject<Message<object>>, logService: LogService) =>
+    useFactory: (subject: Subject<Message<Record<string, unknown>>>, logService: LogService) =>
       MessageSender.combine(
         new SubjectMessageSender(subject), // For sending messages in the same context
         new ChromeMessageSender(logService), // For sending messages to different contexts
@@ -550,14 +550,14 @@ const safeProviders: SafeProvider[] = [
         // we need the same instance that our in memory background is utilizing.
         return getBgService("intraprocessMessagingSubject")();
       } else {
-        return new Subject<Message<object>>();
+        return new Subject<Message<Record<string, unknown>>>();
       }
     },
     deps: [],
   }),
   safeProvider({
     provide: MessageSender,
-    useFactory: (subject: Subject<Message<object>>, logService: LogService) =>
+    useFactory: (subject: Subject<Message<Record<string, unknown>>>, logService: LogService) =>
       MessageSender.combine(
         new SubjectMessageSender(subject), // For sending messages in the same context
         new ChromeMessageSender(logService), // For sending messages to different contexts
@@ -576,7 +576,7 @@ const safeProviders: SafeProvider[] = [
         // There isn't a locally created background so we will communicate with
         // the true background through chrome apis, in that case, we can just create
         // one for ourself.
-        return new Subject<Message<object>>();
+        return new Subject<Message<Record<string, unknown>>>();
       }
     },
     deps: [],

apps/desktop/src/app/services/services.module.ts

@@ -151,7 +151,7 @@ const safeProviders: SafeProvider[] = [
   }),
   safeProvider({
     provide: MessageSender,
-    useFactory: (subject: Subject<Message<object>>) =>
+    useFactory: (subject: Subject<Message<Record<string, unknown>>>) =>
       MessageSender.combine(
         new ElectronRendererMessageSender(), // Communication with main process
         new SubjectMessageSender(subject), // Communication with ourself
@@ -160,7 +160,7 @@ const safeProviders: SafeProvider[] = [
   }),
   safeProvider({
     provide: MessageListener,
-    useFactory: (subject: Subject<Message<object>>) =>
+    useFactory: (subject: Subject<Message<Record<string, unknown>>>) =>
       new MessageListener(
         merge(
           subject.asObservable(), // For messages from the same context

apps/desktop/src/main.ts

@@ -223,7 +223,7 @@ export class Main {
     this.updaterMain = new UpdaterMain(this.i18nService, this.windowMain);
     this.trayMain = new TrayMain(this.windowMain, this.i18nService, this.desktopSettingsService);
 
-    const messageSubject = new Subject<Message<object>>();
+    const messageSubject = new Subject<Message<Record<string, unknown>>>();
     this.messagingService = MessageSender.combine(
       new SubjectMessageSender(messageSubject), // For local messages
       new ElectronMainMessagingService(this.windowMain),

apps/desktop/src/platform/services/electron-renderer-message.sender.ts

@@ -2,9 +2,9 @@ import { MessageSender, CommandDefinition } from "@bitwarden/common/platform/mes
 import { getCommand } from "@bitwarden/common/platform/messaging/internal";
 
 export class ElectronRendererMessageSender implements MessageSender {
-  send<T extends object>(
+  send<T extends Record<string, unknown>>(
     commandDefinition: CommandDefinition<T> | string,
-    payload: object | T = {},
+    payload: Record<string, unknown> | T = {},
   ): void {
     const command = getCommand(commandDefinition);
     ipc.platform.sendMessage(Object.assign({}, { command: command }, payload));

apps/desktop/src/platform/utils/from-ipc-messaging.ts

@@ -8,8 +8,8 @@ import { tagAsExternal } from "@bitwarden/common/platform/messaging/internal";
  * @returns An observable stream of messages.
  */
 export const fromIpcMessaging = () => {
-  return fromEventPattern<Message<object>>(
+  return fromEventPattern<Message<Record<string, unknown>>>(
     (handler) => ipc.platform.onMessage.addListener(handler),
     (handler) => ipc.platform.onMessage.removeListener(handler),
-  ).pipe(tagAsExternal, share());
+  ).pipe(tagAsExternal(), share());
 };

apps/desktop/src/services/electron-main-messaging.service.ts

@@ -87,7 +87,10 @@ export class ElectronMainMessagingService implements MessageSender {
     });
   }
 
-  send<T extends object>(commandDefinition: CommandDefinition<T> | string, arg: T | object = {}) {
+  send<T extends Record<string, unknown>>(
+    commandDefinition: CommandDefinition<T> | string,
+    arg: T | Record<string, unknown> = {},
+  ) {
     const command = getCommand(commandDefinition);
     const message = Object.assign({}, { command: command }, arg);
     if (this.windowMain.win != null) {

libs/angular/src/services/injection-tokens.ts

@@ -49,7 +49,7 @@ export const SYSTEM_THEME_OBSERVABLE = new SafeInjectionToken<Observable<ThemeTy
   "SYSTEM_THEME_OBSERVABLE",
 );
 export const DEFAULT_VAULT_TIMEOUT = new SafeInjectionToken<VaultTimeout>("DEFAULT_VAULT_TIMEOUT");
-export const INTRAPROCESS_MESSAGING_SUBJECT = new SafeInjectionToken<Subject<Message<object>>>(
-  "INTRAPROCESS_MESSAGING_SUBJECT",
-);
+export const INTRAPROCESS_MESSAGING_SUBJECT = new SafeInjectionToken<
+  Subject<Message<Record<string, unknown>>>
+>("INTRAPROCESS_MESSAGING_SUBJECT");
 export const CLIENT_TYPE = new SafeInjectionToken<ClientType>("CLIENT_TYPE");

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

@@ -649,7 +649,7 @@ const safeProviders: SafeProvider[] = [
   safeProvider({
     provide: BroadcasterService,
     useClass: DefaultBroadcasterService,
-    deps: [MessageSender, MessageListener],
+    deps: [MessageListener],
   }),
   safeProvider({
     provide: VaultTimeoutSettingsServiceAbstraction,
@@ -1165,17 +1165,19 @@ const safeProviders: SafeProvider[] = [
   }),
   safeProvider({
     provide: INTRAPROCESS_MESSAGING_SUBJECT,
-    useFactory: () => new Subject<Message<object>>(),
+    useFactory: () => new Subject<Message<Record<string, unknown>>>(),
     deps: [],
   }),
   safeProvider({
     provide: MessageListener,
-    useFactory: (subject: Subject<Message<object>>) => new MessageListener(subject.asObservable()),
+    useFactory: (subject: Subject<Message<Record<string, unknown>>>) =>
+      new MessageListener(subject.asObservable()),
     deps: [INTRAPROCESS_MESSAGING_SUBJECT],
   }),
   safeProvider({
     provide: MessageSender,
-    useFactory: (subject: Subject<Message<object>>) => new SubjectMessageSender(subject),
+    useFactory: (subject: Subject<Message<Record<string, unknown>>>) =>
+      new SubjectMessageSender(subject),
     deps: [INTRAPROCESS_MESSAGING_SUBJECT],
   }),
   safeProvider({

libs/common/src/platform/abstractions/broadcaster.service.ts

@@ -6,10 +6,6 @@ export interface MessageBase {
  * @deprecated Use the observable from the appropriate service instead.
  */
 export abstract class BroadcasterService {
-  /**
-   * @deprecated Use the observable from the appropriate service instead.
-   */
-  abstract send(message: MessageBase, id?: string): void;
   /**
    * @deprecated Use the observable from the appropriate service instead.
    */

libs/common/src/platform/messaging/helpers.spec.ts

@@ -12,7 +12,7 @@ describe("helpers", () => {
     });
 
     it("can get the command from a message definition", () => {
-      const commandDefinition = new CommandDefinition<object>("myCommand");
+      const commandDefinition = new CommandDefinition<Record<string, unknown>>("myCommand");
 
       const command = getCommand(commandDefinition);
 
@@ -22,9 +22,9 @@ describe("helpers", () => {
 
   describe("tag integration", () => {
     it("can tag and identify as tagged", async () => {
-      const messagesSubject = new Subject<Message<object>>();
+      const messagesSubject = new Subject<Message<Record<string, unknown>>>();
 
-      const taggedMessages = messagesSubject.asObservable().pipe(tagAsExternal);
+      const taggedMessages = messagesSubject.asObservable().pipe(tagAsExternal());
 
       const firstValuePromise = firstValueFrom(taggedMessages);
 
@@ -39,7 +39,7 @@ describe("helpers", () => {
   describe("isExternalMessage", () => {
     it.each([null, { command: "myCommand", test: "object" }, undefined] as Message<
       Record<string, unknown>
-    >[])("returns false when value is %s", (value: Message<object>) => {
+    >[])("returns false when value is %s", (value: Message<Record<string, unknown>>) => {
       expect(isExternalMessage(value)).toBe(false);
     });
   });

libs/common/src/platform/messaging/helpers.ts

@@ -1,8 +1,10 @@
-import { MonoTypeOperatorFunction, map } from "rxjs";
+import { map } from "rxjs";
 
-import { Message, CommandDefinition } from "./types";
+import { CommandDefinition } from "./types";
 
-export const getCommand = (commandDefinition: CommandDefinition<object> | string) => {
+export const getCommand = (
+  commandDefinition: CommandDefinition<Record<string, unknown>> | string,
+) => {
   if (typeof commandDefinition === "string") {
     return commandDefinition;
   } else {
@@ -16,8 +18,8 @@ export const isExternalMessage = (message: Record<PropertyKey, unknown>) => {
   return message?.[EXTERNAL_SOURCE_TAG] === true;
 };
 
-export const tagAsExternal: MonoTypeOperatorFunction<Message<object>> = map(
-  (message: Message<object>) => {
+export const tagAsExternal = <T extends Record<PropertyKey, unknown>>() => {
+  return map((message: T) => {
     return Object.assign(message, { [EXTERNAL_SOURCE_TAG]: true });
-  },
-);
+  });
+};

libs/common/src/platform/messaging/message.listener.ts

@@ -11,7 +11,7 @@ import { Message, CommandDefinition } from "./types";
  * or vault data changes and those observables should be preferred over messaging.
  */
 export class MessageListener {
-  constructor(private readonly messageStream: Observable<Message<object>>) {}
+  constructor(private readonly messageStream: Observable<Message<Record<string, unknown>>>) {}
 
   /**
    * A stream of all messages sent through the application. It does not contain type information for the
@@ -28,7 +28,9 @@ export class MessageListener {
    *
    * @param commandDefinition The CommandDefinition containing the information about the message type you care about.
    */
-  messages$<T extends object>(commandDefinition: CommandDefinition<T>): Observable<T> {
+  messages$<T extends Record<string, unknown>>(
+    commandDefinition: CommandDefinition<T>,
+  ): Observable<T> {
     return this.allMessages$.pipe(
       filter((msg) => msg?.command === commandDefinition.command),
     ) as Observable<T>;

libs/common/src/platform/messaging/message.sender.ts

@@ -3,9 +3,9 @@ import { CommandDefinition } from "./types";
 class MultiMessageSender implements MessageSender {
   constructor(private readonly innerMessageSenders: MessageSender[]) {}
 
-  send<T extends object>(
+  send<T extends Record<string, unknown>>(
     commandDefinition: string | CommandDefinition<T>,
-    payload: object | T = {},
+    payload: Record<string, unknown> | T = {},
   ): void {
     for (const messageSender of this.innerMessageSenders) {
       messageSender.send(commandDefinition, payload);
@@ -26,7 +26,10 @@ export abstract class MessageSender {
    * @param commandDefinition
    * @param payload
    */
-  abstract send<T extends object>(commandDefinition: CommandDefinition<T>, payload: T): void;
+  abstract send<T extends Record<string, unknown>>(
+    commandDefinition: CommandDefinition<T>,
+    payload: T,
+  ): void;
 
   /**
    * A legacy method for sending messages in a non-type safe way.
@@ -38,12 +41,12 @@ export abstract class MessageSender {
    * @param payload Extra contextual information regarding the message. Be aware that this payload may
    *   be serialized and lose all prototype information.
    */
-  abstract send(command: string, payload?: object): void;
+  abstract send(command: string, payload?: Record<string, unknown>): void;
 
   /** Implementation of the other two overloads, read their docs instead. */
-  abstract send<T extends object>(
+  abstract send<T extends Record<string, unknown>>(
     commandDefinition: CommandDefinition<T> | string,
-    payload: T | object,
+    payload: T | Record<string, unknown>,
   ): void;
 
   /**

libs/common/src/platform/messaging/subject-message.sender.ts

@@ -5,11 +5,11 @@ import { MessageSender } from "./message.sender";
 import { Message, CommandDefinition } from "./types";
 
 export class SubjectMessageSender implements MessageSender {
-  constructor(private readonly messagesSubject: Subject<Message<object>>) {}
+  constructor(private readonly messagesSubject: Subject<Message<Record<string, unknown>>>) {}
 
-  send<T extends object>(
+  send<T extends Record<string, unknown>>(
     commandDefinition: string | CommandDefinition<T>,
-    payload: object | T = {},
+    payload: Record<string, unknown> | T = {},
   ): void {
     const command = getCommand(commandDefinition);
     this.messagesSubject.next(Object.assign(payload ?? {}, { command: command }));

libs/common/src/platform/messaging/types.ts

@@ -5,9 +5,9 @@ declare const tag: unique symbol;
  * alonside `MessageSender` and `MessageListener` for providing a type
  * safe(-ish) way of sending and receiving messages.
  */
-export class CommandDefinition<T extends object> {
+export class CommandDefinition<T extends Record<string, unknown>> {
   [tag]: T;
   constructor(readonly command: string) {}
 }
 
-export type Message<T extends object> = { command: string } & T;
+export type Message<T extends Record<string, unknown>> = { command: string } & T;

libs/common/src/platform/services/default-broadcaster.service.ts

@@ -1,7 +1,7 @@
 import { Subscription } from "rxjs";
 
 import { BroadcasterService, MessageBase } from "../abstractions/broadcaster.service";
-import { MessageListener, MessageSender } from "../messaging";
+import { MessageListener } from "../messaging";
 
 /**
  * Temporary implementation that just delegates to the message sender and message listener
@@ -10,14 +10,7 @@ import { MessageListener, MessageSender } from "../messaging";
 export class DefaultBroadcasterService implements BroadcasterService {
   subscriptions = new Map<string, Subscription>();
 
-  constructor(
-    private readonly messageSender: MessageSender,
-    private readonly messageListener: MessageListener,
-  ) {}
-
-  send(message: MessageBase, id?: string) {
-    this.messageSender.send(message?.command, message);
-  }
+  constructor(private readonly messageListener: MessageListener) {}
 
   subscribe(id: string, messageCallback: (message: MessageBase) => void) {
     this.subscriptions.set(