@tanstack/angular-query-experimental/inject-mutation-state.mjs.map

Signals for managing, caching and syncing asynchronous and remote data in Angular

{"version":3,"file":"inject-mutation-state.mjs","sources":["../src/inject-mutation-state.ts"],"sourcesContent":["import {\n  DestroyRef,\n  Injector,\n  NgZone,\n  assertInInjectionContext,\n  computed,\n  inject,\n  signal,\n} from '@angular/core'\nimport {\n  QueryClient,\n  notifyManager,\n  replaceEqualDeep,\n} from '@tanstack/query-core'\nimport type { Signal } from '@angular/core'\nimport type {\n  Mutation,\n  MutationCache,\n  MutationFilters,\n  MutationState,\n} from '@tanstack/query-core'\n\ntype MutationStateOptions<TResult = MutationState> = {\n  filters?: MutationFilters\n  select?: (mutation: Mutation) => TResult\n}\n\n/**\n *\n * @param mutationCache\n * @param options\n */\nfunction getResult<TResult = MutationState>(\n  mutationCache: MutationCache,\n  options: MutationStateOptions<TResult>,\n): Array<TResult> {\n  return mutationCache\n    .findAll(options.filters)\n    .map(\n      (mutation): TResult =>\n        (options.select ? options.select(mutation) : mutation.state) as TResult,\n    )\n}\n\nexport interface InjectMutationStateOptions {\n  /**\n   * The `Injector` in which to create the mutation state signal.\n   *\n   * If this is not provided, the current injection context will be used instead (via `inject`).\n   */\n  injector?: Injector\n}\n\n/**\n * Injects a signal that tracks the state of all mutations.\n * @param injectMutationStateFn - A function that returns mutation state options.\n * @param options - The Angular injector to use.\n * @returns The signal that tracks the state of all mutations.\n */\nexport function injectMutationState<TResult = MutationState>(\n  injectMutationStateFn: () => MutationStateOptions<TResult> = () => ({}),\n  options?: InjectMutationStateOptions,\n): Signal<Array<TResult>> {\n  !options?.injector && assertInInjectionContext(injectMutationState)\n  const injector = options?.injector ?? inject(Injector)\n  const destroyRef = injector.get(DestroyRef)\n  const ngZone = injector.get(NgZone)\n  const queryClient = injector.get(QueryClient)\n  const mutationCache = queryClient.getMutationCache()\n\n  /**\n   * Computed signal that gets result from mutation cache based on passed options\n   * First element is the result, second element is the time when the result was set\n   */\n  const resultFromOptionsSignal = computed(() => {\n    return [\n      getResult(mutationCache, injectMutationStateFn()),\n      performance.now(),\n    ] as const\n  })\n\n  /**\n   * Signal that contains result set by subscriber\n   * First element is the result, second element is the time when the result was set\n   */\n  const resultFromSubscriberSignal = signal<[Array<TResult>, number] | null>(\n    null,\n  )\n\n  /**\n   * Returns the last result by either subscriber or options\n   */\n  const effectiveResultSignal = computed(() => {\n    const optionsResult = resultFromOptionsSignal()\n    const subscriberResult = resultFromSubscriberSignal()\n    return subscriberResult && subscriberResult[1] > optionsResult[1]\n      ? subscriberResult[0]\n      : optionsResult[0]\n  })\n\n  const unsubscribe = ngZone.runOutsideAngular(() =>\n    mutationCache.subscribe(\n      notifyManager.batchCalls(() => {\n        const [lastResult] = effectiveResultSignal()\n        const nextResult = replaceEqualDeep(\n          lastResult,\n          getResult(mutationCache, injectMutationStateFn()),\n        )\n        if (lastResult !== nextResult) {\n          ngZone.run(() => {\n            resultFromSubscriberSignal.set([nextResult, performance.now()])\n          })\n        }\n      }),\n    ),\n  )\n\n  destroyRef.onDestroy(unsubscribe)\n\n  return effectiveResultSignal\n}\n"],"names":[],"mappings":";;AAgCA,SAAS,UACP,eACA,SACgB;AAChB,SAAO,cACJ,QAAQ,QAAQ,OAAO,EACvB;AAAA,IACC,CAAC,aACE,QAAQ,SAAS,QAAQ,OAAO,QAAQ,IAAI,SAAS;AAAA,EAC1D;AACJ;AAiBO,SAAS,oBACd,wBAA6D,OAAO,KACpE,SACwB;AACvB,IAAA,mCAAS,aAAY,yBAAyB,mBAAmB;AAClE,QAAM,YAAW,mCAAS,aAAY,OAAO,QAAQ;AAC/C,QAAA,aAAa,SAAS,IAAI,UAAU;AACpC,QAAA,SAAS,SAAS,IAAI,MAAM;AAC5B,QAAA,cAAc,SAAS,IAAI,WAAW;AACtC,QAAA,gBAAgB,YAAY,iBAAiB;AAM7C,QAAA,0BAA0B,SAAS,MAAM;AACtC,WAAA;AAAA,MACL,UAAU,eAAe,uBAAuB;AAAA,MAChD,YAAY,IAAI;AAAA,IAClB;AAAA,EAAA,CACD;AAMD,QAAM,6BAA6B;AAAA,IACjC;AAAA,EACF;AAKM,QAAA,wBAAwB,SAAS,MAAM;AAC3C,UAAM,gBAAgB,wBAAwB;AAC9C,UAAM,mBAAmB,2BAA2B;AAC7C,WAAA,oBAAoB,iBAAiB,CAAC,IAAI,cAAc,CAAC,IAC5D,iBAAiB,CAAC,IAClB,cAAc,CAAC;AAAA,EAAA,CACpB;AAED,QAAM,cAAc,OAAO;AAAA,IAAkB,MAC3C,cAAc;AAAA,MACZ,cAAc,WAAW,MAAM;AACvB,cAAA,CAAC,UAAU,IAAI,sBAAsB;AAC3C,cAAM,aAAa;AAAA,UACjB;AAAA,UACA,UAAU,eAAe,sBAAuB,CAAA;AAAA,QAClD;AACA,YAAI,eAAe,YAAY;AAC7B,iBAAO,IAAI,MAAM;AACf,uCAA2B,IAAI,CAAC,YAAY,YAAY,IAAK,CAAA,CAAC;AAAA,UAAA,CAC/D;AAAA,QAAA;AAAA,MAEJ,CAAA;AAAA,IAAA;AAAA,EAEL;AAEA,aAAW,UAAU,WAAW;AAEzB,SAAA;AACT;"}