Method mutate

packages/query-core/src/mutationObserver.ts:207–222

* Builds a new `Mutation` in the `MutationCache` using the observer's * current options, detaches this observer from any previously observed * mutation, attaches it to the new one, and executes it with the given * variables. * * The optional per-call `options` (`onSuccess`/`onError`/`

(
    variables: TVariables,
    options?: MutateOptions<TData, TError, TVariables, TOnMutateResult>,
  )

   * ```
   */
  mutate(
    variables: TVariables,
    options?: MutateOptions<TData, TError, TVariables, TOnMutateResult>,
  ): Promise<TData> {
    this.#mutateOptions = options

    this.#currentMutation?.removeObserver(this)

    this.#currentMutation = this.#client
      .getMutationCache()
      .build(this.#client, this.options)

    this.#currentMutation.addObserver(this)

    return this.#currentMutation.execute(variables)
  }

  #updateResult(): void {
    const state =