How to reuse resolve in Angular?

Question

JavaScript

When loading the application, it fulfills the first resolution

setThreads(val) {
    if (!this.threadsInited) {
      this.initThreadsDefer.resolve(val.items);
      this.threadsInited = true;
    } else {
      this.newMessageDefer.notify(val.newMessage);
    }
  }

There are cases when this data needs to be overwritten, but re-resolve does not change anything. How to proceed ?