Method #notify

packages/query-core/src/mutationObserver.ts:161–210

(action?: Action<TData, TError, TVariables, TOnMutateResult>)

  }

  #notify(action?: Action<TData, TError, TVariables, TOnMutateResult>): void {
    notifyManager.batch(() => {
      // First trigger the mutate callbacks
      if (this.#mutateOptions && this.hasListeners()) {
        const variables = this.#currentResult.variables!
        const onMutateResult = this.#currentResult.context

        const context = {
          client: this.#client,
          meta: this.options.meta,
          mutationKey: this.options.mutationKey,
        } satisfies MutationFunctionContext

        if (action?.type === 'success') {
          this.#mutateOptions.onSuccess?.(
            action.data,
            variables,
            onMutateResult,
            context,
          )
          this.#mutateOptions.onSettled?.(
            action.data,
            null,
            variables,
            onMutateResult,
            context,
          )
        } else if (action?.type === 'error') {
          this.#mutateOptions.onError?.(
            action.error,
            variables,
            onMutateResult,
            context,
          )
          this.#mutateOptions.onSettled?.(
            undefined,
            action.error,
            variables,
            onMutateResult,
            context,
          )
        }
      }

      // Then trigger the listeners
      this.listeners.forEach((listener) => {
        listener(this.#currentResult)
      })
    })
  }
}