Method onSubscribe

packages/query-core/src/queryObserver.ts:110–122

()

  }

  protected onSubscribe(): void {
    if (this.listeners.size === 1) {
      this.#currentQuery.addObserver(this)

      if (shouldFetchOnMount(this.#currentQuery, this.options)) {
        this.#executeFetch()
      } else {
        this.updateResult()
      }

      this.#updateTimers()
    }
  }

  protected onUnsubscribe(): void {
    if (!this.hasListeners()) {