@tanstack/query-core/build/modern/mutationObserver.cjs.map

The framework agnostic core that powers TanStack Query

{"version":3,"file":"mutationObserver.cjs","names":["Subscribable","#client","#updateResult","shallowEqualObjects","#currentMutation","hashKey","#notify","#currentResult","#mutateOptions","getDefaultState"],"sources":["../../src/mutationObserver.ts"],"sourcesContent":["import { getDefaultState } from './mutation'\nimport { notifyManager } from './notifyManager'\nimport { Subscribable } from './subscribable'\nimport { hashKey, shallowEqualObjects } from './utils'\nimport type { QueryClient } from './queryClient'\nimport type {\n  DefaultError,\n  MutateOptions,\n  MutationFunctionContext,\n  MutationObserverOptions,\n  MutationObserverResult,\n} from './types'\nimport type { Action, Mutation } from './mutation'\n\n// TYPES\n\ntype MutationObserverListener<TData, TError, TVariables, TOnMutateResult> = (\n  result: MutationObserverResult<TData, TError, TVariables, TOnMutateResult>,\n) => void\n\n// CLASS\n\nexport class MutationObserver<\n  TData = unknown,\n  TError = DefaultError,\n  TVariables = void,\n  TOnMutateResult = unknown,\n> extends Subscribable<\n  MutationObserverListener<TData, TError, TVariables, TOnMutateResult>\n> {\n  options!: MutationObserverOptions<TData, TError, TVariables, TOnMutateResult>\n\n  #client: QueryClient\n  #currentResult: MutationObserverResult<\n    TData,\n    TError,\n    TVariables,\n    TOnMutateResult\n  > = undefined!\n  #currentMutation?: Mutation<TData, TError, TVariables, TOnMutateResult>\n  #mutateOptions?: MutateOptions<TData, TError, TVariables, TOnMutateResult>\n\n  constructor(\n    client: QueryClient,\n    options: MutationObserverOptions<\n      TData,\n      TError,\n      TVariables,\n      TOnMutateResult\n    >,\n  ) {\n    super()\n\n    this.#client = client\n    this.setOptions(options)\n    this.bindMethods()\n    this.#updateResult()\n  }\n\n  protected bindMethods(): void {\n    this.mutate = this.mutate.bind(this)\n    this.reset = this.reset.bind(this)\n  }\n\n  setOptions(\n    options: MutationObserverOptions<\n      TData,\n      TError,\n      TVariables,\n      TOnMutateResult\n    >,\n  ) {\n    const prevOptions = this.options as\n      | MutationObserverOptions<TData, TError, TVariables, TOnMutateResult>\n      | undefined\n    this.options = this.#client.defaultMutationOptions(options)\n    if (!shallowEqualObjects(this.options, prevOptions)) {\n      this.#client.getMutationCache().notify({\n        type: 'observerOptionsUpdated',\n        mutation: this.#currentMutation,\n        observer: this,\n      })\n    }\n\n    if (\n      prevOptions?.mutationKey &&\n      this.options.mutationKey &&\n      hashKey(prevOptions.mutationKey) !== hashKey(this.options.mutationKey)\n    ) {\n      this.reset()\n    } else if (this.#currentMutation?.state.status === 'pending') {\n      this.#currentMutation.setOptions(this.options)\n    }\n  }\n\n  protected onSubscribe(): void {\n    if (this.listeners.size === 1 && this.#currentMutation) {\n      this.#currentMutation.addObserver(this)\n\n      this.#updateResult()\n    }\n  }\n\n  protected onUnsubscribe(): void {\n    if (!this.hasListeners()) {\n      this.#currentMutation?.removeObserver(this)\n    }\n  }\n\n  onMutationUpdate(\n    action: Action<TData, TError, TVariables, TOnMutateResult>,\n  ): void {\n    this.#updateResult()\n\n    this.#notify(action)\n  }\n\n  getCurrentResult(): MutationObserverResult<\n    TData,\n    TError,\n    TVariables,\n    TOnMutateResult\n  > {\n    return this.#currentResult\n  }\n\n  reset(): void {\n    // reset needs to remove the observer from the mutation because there is no way to \"get it back\"\n    // another mutate call will yield a new mutation!\n    this.#currentMutation?.removeObserver(this)\n    this.#currentMutation = undefined\n    this.#updateResult()\n    this.#notify()\n  }\n\n  mutate(\n    variables: TVariables,\n    options?: MutateOptions<TData, TError, TVariables, TOnMutateResult>,\n  ): Promise<TData> {\n    this.#mutateOptions = options\n\n    this.#currentMutation?.removeObserver(this)\n\n    this.#currentMutation = this.#client\n      .getMutationCache()\n      .build(this.#client, this.options)\n\n    this.#currentMutation.addObserver(this)\n\n    return this.#currentMutation.execute(variables)\n  }\n\n  #updateResult(): void {\n    const state =\n      this.#currentMutation?.state ??\n      getDefaultState<TData, TError, TVariables, TOnMutateResult>()\n\n    this.#currentResult = {\n      ...state,\n      isPending: state.status === 'pending',\n      isSuccess: state.status === 'success',\n      isError: state.status === 'error',\n      isIdle: state.status === 'idle',\n      mutate: this.mutate,\n      reset: this.reset,\n    } as MutationObserverResult<TData, TError, TVariables, TOnMutateResult>\n  }\n\n  #notify(action?: Action<TData, TError, TVariables, TOnMutateResult>): void {\n    notifyManager.batch(() => {\n      // First trigger the mutate callbacks\n      if (this.#mutateOptions && this.hasListeners()) {\n        const variables = this.#currentResult.variables!\n        const onMutateResult = this.#currentResult.context\n\n        const context = {\n          client: this.#client,\n          meta: this.options.meta,\n          mutationKey: this.options.mutationKey,\n        } satisfies MutationFunctionContext\n\n        if (action?.type === 'success') {\n          try {\n            this.#mutateOptions.onSuccess?.(\n              action.data,\n              variables,\n              onMutateResult,\n              context,\n            )\n          } catch (e) {\n            void Promise.reject(e)\n          }\n          try {\n            this.#mutateOptions.onSettled?.(\n              action.data,\n              null,\n              variables,\n              onMutateResult,\n              context,\n            )\n          } catch (e) {\n            void Promise.reject(e)\n          }\n        } else if (action?.type === 'error') {\n          try {\n            this.#mutateOptions.onError?.(\n              action.error,\n              variables,\n              onMutateResult,\n              context,\n            )\n          } catch (e) {\n            void Promise.reject(e)\n          }\n          try {\n            this.#mutateOptions.onSettled?.(\n              undefined,\n              action.error,\n              variables,\n              onMutateResult,\n              context,\n            )\n          } catch (e) {\n            void Promise.reject(e)\n          }\n        }\n      }\n\n      // Then trigger the listeners\n      this.listeners.forEach((listener) => {\n        listener(this.#currentResult)\n      })\n    })\n  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