feat(actor): add actors namespace with subscribe/send

package.json

@@ -27,6 +27,7 @@
   },
   "dependencies": {
     "axios": "^1.18.1",
+    "partysocket": "^0.0.23",
     "socket.io-client": "^4.8.3",
     "uuid": "^13.0.2"
   },

src/actor.ts

@@ -0,0 +1,113 @@
+/**
+ * Type-only base class for Actors.
+ *
+ * Import and extend this in your actor files:
+ *   import { Actor } from "@base44/sdk";
+ *   export class MyActor extends Actor { ... }
+ *
+ * At deploy time the bundler replaces this import with the compiled
+ * Cloudflare Durable Object implementation — this file provides types only.
+ */
+
+import type { Base44Client } from "./client";
+
+/**
+ * A single client connection. `Send` is the message type this connection accepts
+ * via {@link send} — the actor's *outgoing* (server→client) messages.
+ */
+export interface Conn<Send = unknown> {
+  /** Unique per-connection id (one per socket/tab), the same value the client
+   *  receives from `subscribe()`. Use this — not userId — to identify a distinct
+   *  client, so multiple tabs of the same user are separate connections. */
+  id: string;
+  userId: string;
+  appId: string;
+  instanceId: string;
+  send(data: Send): void;
+  reject(code: number, reason: string): void;
+}
+
+export interface Storage {
+  get<T>(key: string): Promise<T | undefined>;
+  put(key: string, value: unknown): Promise<void>;
+  delete(key: string): Promise<boolean>;
+  /** Wipe the room's entire persisted storage (match-end cleanup). Safe: a
+   *  later rejoin re-bootstraps exactly like a brand-new room. */
+  deleteAll(): Promise<void>;
+}
+
+/**
+ * Base class for an Actor.
+ *
+ * @typeParam Incoming - messages this actor *receives* from clients
+ *   (`handleMessage`'s `msg`) — the schema's `toServer` section.
+ * @typeParam Outgoing - messages this actor *sends* to clients
+ *   (`conn.send`/`broadcast`) — the schema's `toClient` section.
+ *
+ * With a generated `schema.jsonc`, wire both from the registry so they can't drift
+ * from the client's types:
+ * ```ts
+ * type Reg = ActorRegistry["MyActor"];
+ * class MyActor extends Actor<Reg["toServer"], Reg["toClient"]> { ... }
+ * ```
+ */
+export abstract class Actor<Incoming = unknown, Outgoing = unknown> {
+  abstract handleConnect(conn: Conn<Outgoing>): void | Promise<void>;
+  abstract handleMessage(conn: Conn<Outgoing>, msg: Incoming): void | Promise<void>;
+  abstract handleClose(conn: Conn<Outgoing>): void | Promise<void>;
+  abstract handleTick(): void | Promise<void>;
+
+  /**
+   * Optional wake hook: runs once when the instance starts, before any
+   * connection is handled — safe to load persisted state here.
+   */
+  handleStart(): void | Promise<void> {}
+
+  /**
+   * Managed ticker (opt-in). Override {@link shouldTick} and the platform runs
+   * {@link handleTick} on a timer of {@link tickIntervalMs} while it returns true,
+   * and stops (letting the Durable Object hibernate — no compute cost) when it
+   * returns false. The platform owns scheduling, rescheduling, self-heal, and
+   * error-safety — you don't call {@link startLoop}/{@link stopLoop}.
+   *
+   * Re-evaluated after every connect/message/close and on every tick, so keep it
+   * cheap and pure (no async, no side effects). Example: `return this.players >= 2`.
+   */
+  protected tickIntervalMs = 100;
+  protected shouldTick?(): boolean;
+
+  protected broadcast(_data: Outgoing): void {
+    throw new Error("Actor.broadcast() is only available inside a deployed actor");
+  }
+
+  protected getConnections(): Conn<Outgoing>[] {
+    throw new Error("Actor.getConnections() is only available inside a deployed actor");
+  }
+
+  protected startLoop(_ms: number): Promise<void> {
+    throw new Error("Actor.startLoop() is only available inside a deployed actor");
+  }
+
+  protected stopLoop(): Promise<void> {
+    throw new Error("Actor.stopLoop() is only available inside a deployed actor");
+  }
+
+  protected get instanceId(): string {
+    throw new Error("Actor.instanceId is only available inside a deployed actor");
+  }
+
+  protected get storage(): Storage {
+    throw new Error("Actor.storage is only available inside a deployed actor");
+  }
+
+  /**
+   * Anonymous Base44 client scoped to this actor instance — no user or service
+   * auth, so entity access is RLS-gated (same as a logged-out visitor). Always
+   * operates on production data: an actor runs server-side with no per-connection
+   * identity, so a Test DB preview selected in the editor does not apply here.
+   * Example: `const rows = await this.client.entities.Score.list();`
+   */
+  protected get client(): Base44Client {
+    throw new Error("Actor.client is only available inside a deployed actor");
+  }
+}

src/client.ts

@@ -20,6 +20,7 @@ import type {
   CreateClientOptions,
 } from "./client.types.js";
 import { createAnalyticsModule } from "./modules/analytics.js";
+import { createActorsModule, resolveActorsHost } from "./modules/actors.js";
 
 // Re-export client types
 export type { Base44Client, CreateClientConfig, CreateClientOptions };
@@ -163,6 +164,18 @@ export function createClient(config: CreateClientConfig): Base44Client {
     }
   }
 
+  const actorsModule = createActorsModule({
+    appId,
+    // serverUrl is often relative/empty (same-origin app); PartySocket needs an
+    // absolute host, so fall back to the page origin.
+    host: resolveActorsHost(
+      serverUrl,
+      typeof window !== "undefined" ? window.location?.origin : undefined,
+    ),
+    functionsVersion,
+    getAuthToken: () => token || getAccessToken(),
+  });
+
   const userModules = {
     entities: createEntitiesModule({
       axios: axiosClient,
@@ -200,8 +213,10 @@ export function createClient(config: CreateClientConfig): Base44Client {
       appId,
       userAuthModule,
     }),
+    actors: actorsModule.module,
     cleanup: () => {
       userModules.analytics.cleanup();
+      actorsModule.closeAll();
       if (socket) {
         socket.disconnect();
       }

src/client.types.ts

@@ -11,6 +11,7 @@ import type { AgentsModule } from "./modules/agents.types.js";
 import type { AiGatewayModule } from "./modules/ai-gateway.types.js";
 import type { AppLogsModule } from "./modules/app-logs.types.js";
 import type { AnalyticsModule } from "./modules/analytics.types.js";
+import type { ActorsModule } from "./modules/actors.types.js";
 
 /**
  * Options for creating a Base44 client.
@@ -94,6 +95,8 @@ export interface Base44Client {
   analytics: AnalyticsModule;
   /** {@link AppLogsModule | App logs module} for tracking app usage. */
   appLogs: AppLogsModule;
+  /** {@link ActorsModule | Actors module} for subscribing to and sending messages via Cloudflare Durable Object-backed Actors. */
+  actors: ActorsModule;
   /** {@link AuthModule | Auth module} for user authentication and management. */
   auth: AuthModule;
   /** {@link UserConnectorsModule | Connectors module} for app-user OAuth flows. */

src/index.ts

@@ -107,8 +107,21 @@ export type {
 
 export type { AppLogsModule } from "./modules/app-logs.types.js";
 
+export type {
+  ActorsModule,
+  ActorClient,
+  ActorRef,
+  Connection,
+  ActorSubscription,
+  ActorConnectOptions,
+  ActorNameRegistry,
+  ActorRegistry,
+} from "./modules/actors.types.js";
+
 export type { SsoModule, SsoAccessTokenResponse } from "./modules/sso.types.js";
 
+export { Actor, type Conn } from "./actor.js";
+
 export type {
   ConnectorsModule,
   UserConnectorsModule,