@Persist state returns RpcStub objects when returned via RPC

[dmmulroy]

Problem

When an Actor method returns @Persist decorated state via RPC, the caller receives RpcStub objects instead of serialized data.

Reproduction

https://github.com/dmmulroy/actor-bug

git clone https://github.com/dmmulroy/actor-bug
cd actor-bug
npm install
npm run dev
curl http://localhost:8787

DataActor.ts

import { Actor, Persist } from "@cloudflare/actors";

type Item = { id: string; value: number };

export class DataActor extends Actor<Env> {
  @Persist state: { items: Item[] } = { items: [] };

  async getItems(): Promise<Item[]> {
    return this.state.items; // Returns RpcStub objects to RPC callers
  }
}

CoordinatorActor.ts (RPC caller)

const dataActor = DataActor.get("data-1");
const items = await dataActor.getItems();

console.log(items);           // [ RpcStub {}, RpcStub {} ]
console.log(typeof items[0]); // "function"
console.log(String(items[0])); // "[object JsRpcStub]"

Expected

getItems() returns [{ id: "item-1", value: 100 }, ...]

Actual

getItems() returns [RpcStub {}, RpcStub {}] which serialize to [null, null]

Workarounds

1. Query storage directly (recommended)

async getItems(): Promise<Item[]> {
  const result = this.ctx.storage.sql.exec(
    "SELECT value FROM _actor_persist WHERE property = 'state'"
  );
  const row = [...result][0];
  if (row) {
    return JSON.parse(row.value as string).items ?? [];
  }
  return [];
}

2. JSON roundtrip

async getItems(): Promise<Item[]> {
  return JSON.parse(JSON.stringify(this.state.items));
}

Environment

• @cloudflare/actors: 0.0.1-beta.6
• wrangler: 4.53.0