Method onUnsubscribe

packages/query-core/src/mutationObserver.ts:104–108

()

  }

  protected onUnsubscribe(): void {
    if (!this.hasListeners()) {
      this.#currentMutation?.removeObserver(this)
    }
  }

  onMutationUpdate(
    action: Action<TData, TError, TVariables, TOnMutateResult>,