Function handler

packages/core/src/server/sse.ts:65–67

(data: unknown)

    // Subscribe to extra emitters (DB change events)
    for (const { emitter, event: evtName } of options.extraEmitters ?? []) {
      const handler = (data: unknown) => {
        send(data);
      };
      emitter.on(evtName, handler);
      cleanups.push(() => emitter.off(evtName, handler));
    }