Method setOptions

packages/query-core/src/mutationObserver.ts:96–125

* Updates the observer's options. * * If the new `mutationKey` differs from the previous one (and both were * defined), the observer is reset, detaching it from the mutation it was * observing. Otherwise, if the currently observed mutation is still * `pending`, its options are updated

(
    options: MutationObserverOptions<
      TData,
      TError,
      TVariables,
      TOnMutateResult
    >,
  )

   * ```
   */
  setOptions(
    options: MutationObserverOptions<
      TData,
      TError,
      TVariables,
      TOnMutateResult
    >,
  ) {
    const prevOptions = this.options as
      | MutationObserverOptions<TData, TError, TVariables, TOnMutateResult>
      | undefined
    this.options = this.#client.defaultMutationOptions(options)
    if (!shallowEqualObjects(this.options, prevOptions)) {
      this.#client.getMutationCache().notify({
        type: 'observerOptionsUpdated',
        mutation: this.#currentMutation,
        observer: this,
      })
    }

    if (
      prevOptions?.mutationKey &&
      this.options.mutationKey &&
      hashKey(prevOptions.mutationKey) !== hashKey(this.options.mutationKey)
    ) {
      this.reset()
    } else if (this.#currentMutation?.state.status === 'pending') {
      this.#currentMutation.setOptions(this.options)
    }
  }

  protected onSubscribe(): void {
    if (this.listeners.size === 1 && this.#currentMutation) {