Actor Context

interface ActorContext {
  readonly id: string;             // the name you chose with idFromName(name)
  readonly storage: ActorStorage;  // see Actor Storage
  blockConcurrencyWhile<T>(fn: () => Promise<T>): Promise<T>;
  setAlarm(when: number): Promise<void>;  // alias for ctx.storage.setAlarm(when)
  count(): number;                 // live WebSockets on this instance
  broadcast(data: string | ArrayBuffer | ArrayBufferView): number;  // returns sent count
}

class MyActor extends StatefulActor<Env> {
  constructor(ctx: ActorContext, env: Env) {
    super(ctx, env);
    ctx.blockConcurrencyWhile(async () => {
      // preload state, set up initial alarm, etc.
      // every other method call to this instance waits until this resolves
    });
  }
}

async alarm(): Promise<void> {
  this.ctx.broadcast(JSON.stringify({ type: "tick", at: Date.now() }));
}