@angular/common/fesm2022/http.mjs.map

Angular - commonly needed directives and services

{"version":3,"file":"http.mjs","sources":["../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/transfer_cache.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/resource.ts"],"sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {\n  APP_BOOTSTRAP_LISTENER,\n  ApplicationRef,\n  inject,\n  InjectionToken,\n  makeStateKey,\n  Provider,\n  StateKey,\n  TransferState,\n  ɵformatRuntimeError as formatRuntimeError,\n  ɵperformanceMarkFeature as performanceMarkFeature,\n  ɵtruncateMiddle as truncateMiddle,\n  ɵRuntimeError as RuntimeError,\n} from '@angular/core';\nimport {Observable, of} from 'rxjs';\nimport {tap} from 'rxjs/operators';\n\nimport {RuntimeErrorCode} from './errors';\nimport {HttpHeaders} from './headers';\nimport {HTTP_ROOT_INTERCEPTOR_FNS, HttpHandlerFn} from './interceptor';\nimport {HttpRequest} from './request';\nimport {HttpEvent, HttpResponse} from './response';\nimport {HttpParams} from './params';\n\n/**\n * Options to configure how TransferCache should be used to cache requests made via HttpClient.\n *\n * @param includeHeaders Specifies which headers should be included into cached responses. No\n *     headers are included by default.\n * @param filter A function that receives a request as an argument and returns a boolean to indicate\n *     whether a request should be included into the cache.\n * @param includePostRequests Enables caching for POST requests. By default, only GET and HEAD\n *     requests are cached. This option can be enabled if POST requests are used to retrieve data\n *     (for example using GraphQL).\n * @param includeRequestsWithAuthHeaders Enables caching of requests containing `Authorization`,\n *     `Proxy-Authorization`, or `Cookie` headers. By default, these requests are excluded from\n *     caching. Requests sent using `withCredentials` are also excluded by default.\n *\n * @see [Configuring the caching options](guide/ssr#configuring-the-caching-options)\n *\n * @publicApi\n */\nexport type HttpTransferCacheOptions = {\n  includeHeaders?: string[];\n  filter?: (req: HttpRequest<unknown>) => boolean;\n  includePostRequests?: boolean;\n  includeRequestsWithAuthHeaders?: boolean;\n};\n\n/**\n * If your application uses different HTTP origins to make API calls (via `HttpClient`) on the server and\n * on the client, the `HTTP_TRANSFER_CACHE_ORIGIN_MAP` token allows you to establish a mapping\n * between those origins, so that `HttpTransferCache` feature can recognize those requests as the same\n * ones and reuse the data cached on the server during hydration on the client.\n *\n * IMPORTANT: The `HTTP_TRANSFER_CACHE_ORIGIN_MAP` token should *only* be provided in\n * the *server* code of your application (typically in the `app.server.config.ts` script). Angular throws an\n * error if it detects that the token is defined while running on the client.\n *\n * @usageNotes\n *\n * When the same API endpoint is accessed via `http://internal-domain.com:8080` on the server and\n * via `https://external-domain.com` on the client, you can use the following configuration:\n * ```ts\n * // in app.server.config.ts\n * {\n *     provide: HTTP_TRANSFER_CACHE_ORIGIN_MAP,\n *     useValue: {\n *         'http://internal-domain.com:8080': 'https://external-domain.com'\n *     }\n * }\n * ```\n *\n * @publicApi\n */\nexport const HTTP_TRANSFER_CACHE_ORIGIN_MAP = new InjectionToken<Record<string, string>>(\n  typeof ngDevMode !== 'undefined' && ngDevMode ? 'HTTP_TRANSFER_CACHE_ORIGIN_MAP' : '',\n);\n\n/**\n * Keys within cached response data structure.\n */\n\nexport const BODY = 'b';\nexport const HEADERS = 'h';\nexport const STATUS = 's';\nexport const STATUS_TEXT = 'st';\nexport const REQ_URL = 'u';\nexport const RESPONSE_TYPE = 'rt';\n\ninterface TransferHttpResponse {\n  /** body */\n  [BODY]: any;\n  /** headers */\n  [HEADERS]: Record<string, string[]>;\n  /** status */\n  [STATUS]: number;\n  /** statusText */\n  [STATUS_TEXT]: string;\n  /** url */\n  [REQ_URL]: string;\n  /** responseType */\n  [RESPONSE_TYPE]: HttpRequest<unknown>['responseType'];\n}\n\ninterface CacheOptions extends HttpTransferCacheOptions {\n  isCacheActive: boolean;\n}\n\nexport const CACHE_OPTIONS = new InjectionToken<CacheOptions>(\n  typeof ngDevMode !== 'undefined' && ngDevMode ? 'HTTP_TRANSFER_STATE_CACHE_OPTIONS' : '',\n);\n\n/**\n * A list of allowed HTTP methods to cache.\n */\nconst ALLOWED_METHODS = ['GET', 'HEAD'];\n\nfunction canUseOrCacheRequest(req: HttpRequest<unknown>, options: CacheOptions): boolean {\n  const {isCacheActive, ...globalOptions} = options;\n  const {transferCache: requestOptions, method: requestMethod} = req;\n\n  if (\n    !isCacheActive ||\n    requestOptions === false ||\n    // Do not cache requests sent with credentials.\n    req.withCredentials ||\n    // POST requests are allowed either globally or at request level\n    (requestMethod === 'POST' && !globalOptions.includePostRequests && !requestOptions) ||\n    (requestMethod !== 'POST' && !ALLOWED_METHODS.includes(requestMethod)) ||\n    // Do not cache requests with authentication or cookie headers unless explicitly enabled.\n    (!globalOptions.includeRequestsWithAuthHeaders && hasAuthHeaders(req)) ||\n    globalOptions.filter?.(req) === false\n  ) {\n    return false;\n  }\n\n  return true;\n}\n\nfunction getHeadersToInclude(\n  options: CacheOptions,\n  requestOptions: HttpTransferCacheOptions | boolean | undefined,\n): string[] | undefined {\n  // Request-specific config takes precedence over the global config.\n  return typeof requestOptions === 'object' && requestOptions.includeHeaders\n    ? requestOptions.includeHeaders\n    : options.includeHeaders;\n}\n\n/**\n * Retrieves the cached response for a given request.\n * @param req The request to retrieve the cached response for.\n * @param options The caching options.\n * @param transferState The transfer state to retrieve the cached response from.\n * @param originMap The origin map to map the request URL to the origin. (Not needed when `storeKey` is provided).\n * @param storeKey The key to use to store the cached response in the transfer state. (If not provided, it will be computed from the request and originMap).\n * @param skipUseCacheChecks Whether to skip the use cache checks. (Only disable when the checks have been performed beforehand).\n */\nexport function retrieveStateFromCache(\n  req: HttpRequest<unknown>,\n  options: CacheOptions,\n  transferState: TransferState,\n  originMap: Record<string, string> | null,\n  storeKey?: StateKey<TransferHttpResponse>,\n  skipUseCacheChecks = false,\n): HttpResponse<unknown> | null {\n  if (!skipUseCacheChecks && !canUseOrCacheRequest(req, options)) {\n    return null;\n  }\n\n  if (typeof ngServerMode !== 'undefined' && !ngServerMode && originMap) {\n    throw new RuntimeError(\n      RuntimeErrorCode.HTTP_ORIGIN_MAP_USED_IN_CLIENT,\n      ngDevMode &&\n        'Angular detected that the `HTTP_TRANSFER_CACHE_ORIGIN_MAP` token is configured and ' +\n          'present in the client side code. Please ensure that this token is only provided in the ' +\n          'server code of the application.',\n    );\n  }\n\n  if (!storeKey) {\n    const requestUrl =\n      typeof ngServerMode !== 'undefined' && ngServerMode && originMap\n        ? mapRequestOriginUrl(req.url, originMap)\n        : req.url;\n\n    storeKey = makeCacheKey(req, requestUrl);\n  }\n\n  const response = transferState.get(storeKey, null);\n\n  if (!response) {\n    return null;\n  }\n\n  const {\n    [BODY]: undecodedBody,\n    [RESPONSE_TYPE]: responseType,\n    [HEADERS]: httpHeaders,\n    [STATUS]: status,\n    [STATUS_TEXT]: statusText,\n    [REQ_URL]: url,\n  } = response;\n  // Request found in cache. Respond using it.\n  let body: ArrayBuffer | Blob | string | undefined = undecodedBody;\n\n  switch (responseType) {\n    case 'arraybuffer':\n      body = fromBase64(undecodedBody);\n      break;\n    case 'blob':\n      body = new Blob([fromBase64(undecodedBody)]);\n      break;\n  }\n\n  // We want to warn users accessing a header provided from the cache\n  // That HttpTransferCache alters the headers\n  // The warning will be logged a single time by HttpHeaders instance\n  let headers = new HttpHeaders(httpHeaders);\n  if (typeof ngDevMode === 'undefined' || ngDevMode) {\n    // Append extra logic in dev mode to produce a warning when a header\n    // that was not transferred to the client is accessed in the code via `get`\n    // and `has` calls.\n    const {transferCache: requestOptions} = req;\n    const headersToInclude = getHeadersToInclude(options, requestOptions);\n    headers = appendMissingHeadersDetection(req.url, headers, headersToInclude ?? []);\n  }\n\n  return new HttpResponse({\n    body,\n    headers,\n    status,\n    statusText,\n    url,\n  });\n}\n\nexport function transferCacheInterceptorFn(\n  req: HttpRequest<unknown>,\n  next: HttpHandlerFn,\n): Observable<HttpEvent<unknown>> {\n  const options = inject(CACHE_OPTIONS);\n  if (!canUseOrCacheRequest(req, options)) {\n    return next(req);\n  }\n\n  const transferState = inject(TransferState);\n  const originMap = inject(HTTP_TRANSFER_CACHE_ORIGIN_MAP, {optional: true});\n  const requestUrl =\n    typeof ngServerMode !== 'undefined' && ngServerMode && originMap\n      ? mapRequestOriginUrl(req.url, originMap)\n      : req.url;\n  const storeKey = makeCacheKey(req, requestUrl);\n\n  const cachedResponse = retrieveStateFromCache(\n    req,\n    options,\n    transferState,\n    /** originMap */ null,\n    storeKey,\n    /** skipUseCacheChecks */ true,\n  );\n\n  if (cachedResponse) {\n    return of(cachedResponse);\n  }\n\n  const event$ = next(req);\n  if (typeof ngServerMode !== 'undefined' && ngServerMode) {\n    // Request not found in cache. Make the request and cache it if on the server.\n    return event$.pipe(\n      tap((event: HttpEvent<unknown>) => {\n        if (event instanceof HttpResponse) {\n          const {headers, body, status, statusText} = event;\n\n          // Only cache successful HTTP responses that do not have Cache-Control\n          // directives that forbid shared caching (no-store or private).\n          if (hasUncacheableCacheControl(headers)) {\n            return;\n          }\n\n          const {transferCache: requestOptions, responseType} = req;\n          const headersToInclude = getHeadersToInclude(options, requestOptions);\n\n          transferState.set<TransferHttpResponse>(storeKey, {\n            [BODY]:\n              responseType === 'arraybuffer' || responseType === 'blob' ? toBase64(body) : body,\n            [HEADERS]: getFilteredHeaders(headers, headersToInclude),\n            [STATUS]: status,\n            [STATUS_TEXT]: statusText,\n            [REQ_URL]: requestUrl,\n            [RESPONSE_TYPE]: responseType,\n          });\n        }\n      }),\n    );\n  }\n\n  return event$;\n}\n\n/** @returns true when the request contains authentication or cookie headers. */\nfunction hasAuthHeaders(req: HttpRequest<unknown>): boolean {\n  const headers = req.headers;\n\n  return (\n    headers.has('authorization') || headers.has('proxy-authorization') || headers.has('cookie')\n  );\n}\n\nconst UNCACHEABLE_CACHE_CONTROL_DIRECTIVES = new Set(['no-store', 'private', 'no-cache']);\n\nfunction hasUncacheableCacheControl(headers: HttpHeaders): boolean {\n  const cacheControl = headers.get('cache-control');\n\n  if (!cacheControl) {\n    return false;\n  }\n\n  return cacheControl.split(',').some((directive) => {\n    const directiveName = directive.split('=', 1)[0].trim().toLowerCase();\n\n    return UNCACHEABLE_CACHE_CONTROL_DIRECTIVES.has(directiveName);\n  });\n}\n\nfunction isNonCacheableRequest(cache: RequestCache): boolean {\n  return cache === 'no-cache' || cache === 'no-store';\n}\n\nfunction hasOutgoingCredentials(req: HttpRequest<unknown>): boolean {\n  const {withCredentials, credentials} = req;\n\n  return withCredentials || credentials === 'include' || credentials === 'same-origin';\n}\nfunction getFilteredHeaders(\n  headers: HttpHeaders,\n  includeHeaders: string[] | undefined,\n): Record<string, string[]> {\n  if (!includeHeaders) {\n    return {};\n  }\n\n  const headersMap: Record<string, string[]> = {};\n  for (const key of includeHeaders) {\n    const values = headers.getAll(key);\n    if (values !== null) {\n      headersMap[key] = values;\n    }\n  }\n\n  return headersMap;\n}\n\nfunction sortAndConcatParams(params: HttpParams | URLSearchParams): string {\n  return [...params.keys()]\n    .sort()\n    .map((k) => `${k}=${params.getAll(k)}`)\n    .join('&');\n}\n\nfunction makeCacheKey(\n  request: HttpRequest<any>,\n  mappedRequestUrl: string,\n): StateKey<TransferHttpResponse> {\n  // make the params encoded same as a url so it's easy to identify\n  const {params, method, responseType} = request;\n  const encodedParams = sortAndConcatParams(params);\n\n  let serializedBody = request.serializeBody();\n  if (serializedBody instanceof URLSearchParams) {\n    serializedBody = sortAndConcatParams(serializedBody);\n  } else if (typeof serializedBody !== 'string') {\n    serializedBody = '';\n  }\n\n  const key = [method, responseType, mappedRequestUrl, serializedBody, encodedParams].join('|');\n  const hash = generateHash(key);\n\n  return makeStateKey(hash);\n}\n\nfunction toBase64(buffer: unknown): string {\n  //TODO: replace with when is Baseline widely available\n  // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array/toBase64\n  const bytes = new Uint8Array(buffer as ArrayBufferLike);\n\n  const CHUNK_SIZE = 0x8000; // 32,768 bytes (~32 KB) per chunk, to avoid stack overflow\n\n  let binaryString = '';\n\n  for (let i = 0; i < bytes.length; i += CHUNK_SIZE) {\n    const chunk = bytes.subarray(i, i + CHUNK_SIZE);\n    binaryString += String.fromCharCode.apply(null, chunk as unknown as number[]);\n  }\n  return btoa(binaryString);\n}\n\nfunction fromBase64(base64: string): ArrayBuffer {\n  const binary = atob(base64);\n  const bytes = Uint8Array.from(binary, (c) => c.charCodeAt(0));\n  return bytes.buffer;\n}\n\n/**\n * Returns the DI providers needed to enable HTTP transfer cache.\n *\n * By default, when using server rendering, requests are performed twice: once on the server and\n * other one on the browser.\n *\n * When these providers are added, requests performed on the server are cached and reused during the\n * bootstrapping of the application in the browser thus avoiding duplicate requests and reducing\n * load time.\n *\n * @see [Caching data when using HttpClient](guide/ssr#configuring-the-caching-options)\n *\n */\nexport function withHttpTransferCache(cacheOptions: HttpTransferCacheOptions): Provider[] {\n  return [\n    {\n      provide: CACHE_OPTIONS,\n      useFactory: (): CacheOptions => {\n        performanceMarkFeature('NgHttpTransferCache');\n        return {isCacheActive: true, ...cacheOptions};\n      },\n    },\n    {\n      provide: HTTP_ROOT_INTERCEPTOR_FNS,\n      useValue: transferCacheInterceptorFn,\n      multi: true,\n    },\n    {\n      provide: APP_BOOTSTRAP_LISTENER,\n      multi: true,\n      useFactory: () => {\n        const appRef = inject(ApplicationRef);\n        const cacheState = inject(CACHE_OPTIONS);\n\n        return () => {\n          appRef.whenStable().then(() => {\n            cacheState.isCacheActive = false;\n          });\n        };\n      },\n    },\n  ];\n}\n\n/**\n * This function will add a proxy to an HttpHeader to intercept calls to get/has\n * and log a warning if the header entry requested has been removed\n */\nfunction appendMissingHeadersDetection(\n  url: string,\n  headers: HttpHeaders,\n  headersToInclude: string[],\n): HttpHeaders {\n  const warningProduced = new Set();\n  return new Proxy<HttpHeaders>(headers, {\n    get(target: HttpHeaders, prop: keyof HttpHeaders): unknown {\n      const value = Reflect.get(target, prop);\n      const methods: Set<keyof HttpHeaders> = new Set(['get', 'has', 'getAll']);\n\n      if (typeof value !== 'function' || !methods.has(prop)) {\n        return value;\n      }\n\n      return (headerName: string) => {\n        // We log when the key has been removed and a warning hasn't been produced for the header\n        const key = (prop + ':' + headerName).toLowerCase(); // e.g. `get:cache-control`\n        if (!headersToInclude.includes(headerName) && !warningProduced.has(key)) {\n          warningProduced.add(key);\n          const truncatedUrl = truncateMiddle(url);\n\n          console.warn(\n            formatRuntimeError(\n              RuntimeErrorCode.HEADERS_ALTERED_BY_TRANSFER_CACHE,\n              `Angular detected that the \\`${headerName}\\` header is accessed, but the value of the header ` +\n                `was not transferred from the server to the client by the HttpTransferCache. ` +\n                `To include the value of the \\`${headerName}\\` header for the \\`${truncatedUrl}\\` request, ` +\n                `use the \\`includeHeaders\\` list. The \\`includeHeaders\\` can be defined either ` +\n                `on a request level by adding the \\`transferCache\\` parameter, or on an application ` +\n                `level by adding the \\`httpCacheTransfer.includeHeaders\\` argument to the ` +\n                `\\`provideClientHydration()\\` call. `,\n            ),\n          );\n        }\n\n        // invoking the original method\n        return (value as Function).apply(target, [headerName]);\n      };\n    },\n  });\n}\n\nfunction mapRequestOriginUrl(url: string, originMap: Record<string, string>): string {\n  const origin = new URL(url, 'resolve://').origin;\n  const mappedOrigin = originMap[origin];\n  if (!mappedOrigin) {\n    return url;\n  }\n\n  if (typeof ngDevMode === 'undefined' || ngDevMode) {\n    verifyMappedOrigin(mappedOrigin);\n  }\n\n  return url.replace(origin, mappedOrigin);\n}\n\nfunction verifyMappedOrigin(url: string): void {\n  if (new URL(url, 'resolve://').pathname !== '/') {\n    throw new RuntimeError(\n      RuntimeErrorCode.HTTP_ORIGIN_MAP_CONTAINS_PATH,\n      'Angular detected a URL with a path segment in the value provided for the ' +\n        `\\`HTTP_TRANSFER_CACHE_ORIGIN_MAP\\` token: ${url}. The map should only contain origins ` +\n        'without any other segments.',\n    );\n  }\n}\n\n/**\n * SHA-256 Constants (first 32 bits of the fractional parts of the cube roots of the first 64 primes 2..311):\n */\nconst SHA256_ROUND_CONSTANTS = /* @__PURE__ */ new Uint32Array([\n  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,\n  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,\n  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,\n  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,\n  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,\n  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,\n  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,\n  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,\n]);\n\nlet textEncoder: TextEncoder | undefined;\n\n/**\n * Generates a SHA-256 hash representation of a string.\n *\n * Note: A custom synchronous SHA-256 implementation is used here because the Web Crypto API\n * (`crypto.subtle.digest`) is strictly asynchronous (Promise-based), whereas the transfer cache\n * state lookup and interceptor flow must operate synchronously due to the HttpResource API.\n *\n * The previous DJB2 hashing logic was vulnerable to pre-image and second-preimage attacks due to\n * its small 64-bit keyspace and mathematical simplicity. An attacker could craft colliding request\n * inputs to poison the cache, potentially causing a CDN or the application to serve the wrong\n * cached response to legitimate users. SHA-256 provides strong cryptographic collision resistance,\n * preventing cache key collision attacks.\n */\nexport function generateHash(value: string): string {\n  textEncoder ??= new TextEncoder();\n  const inputBytes = textEncoder.encode(value);\n\n  // Initial hash values (first 32 bits of the fractional parts of the square roots of the first 8 primes 2..19):\n  let hashState0 = 0x6a09e667;\n  let hashState1 = 0xbb67ae85;\n  let hashState2 = 0x3c6ef372;\n  let hashState3 = 0xa54ff53a;\n  let hashState4 = 0x510e527f;\n  let hashState5 = 0x9b05688c;\n  let hashState6 = 0x1f83d9ab;\n  let hashState7 = 0x5be0cd19;\n\n  // Pre-processing (Padding):\n  const messageLengthInBits = inputBytes.length * 8;\n\n  // The total length of the padded message must be a multiple of 64 bytes (512 bits)\n  const paddedLengthInBytes = (((inputBytes.length + 8) >> 6) + 1) << 6;\n  const paddedBytes = new Uint8Array(paddedLengthInBytes);\n  paddedBytes.set(inputBytes);\n  paddedBytes[inputBytes.length] = 0x80; // Append a single '1' bit (0x80 byte)\n\n  const paddedBytesView = new DataView(paddedBytes.buffer);\n  const lowBits = messageLengthInBits >>> 0;\n  const highBits = (messageLengthInBits / 0x100000000) >>> 0;\n  paddedBytesView.setUint32(paddedLengthInBytes - 8, highBits, false);\n  paddedBytesView.setUint32(paddedLengthInBytes - 4, lowBits, false);\n\n  // Process the message in successive 64-byte chunks:\n  const messageSchedule = new Uint32Array(64);\n  for (let chunkOffset = 0; chunkOffset < paddedLengthInBytes; chunkOffset += 64) {\n    // Initialize first 16 words of the message schedule:\n    for (let i = 0; i < 16; i++) {\n      messageSchedule[i] = paddedBytesView.getUint32(chunkOffset + i * 4, false);\n    }\n\n    // Extend to 64 words:\n    for (let i = 16; i < 64; i++) {\n      const prevWord15 = messageSchedule[i - 15];\n      const sigma0 =\n        (((prevWord15 >>> 7) | (prevWord15 << 25)) ^\n          ((prevWord15 >>> 18) | (prevWord15 << 14)) ^\n          (prevWord15 >>> 3)) >>>\n        0;\n\n      const prevWord2 = messageSchedule[i - 2];\n      const sigma1 =\n        (((prevWord2 >>> 17) | (prevWord2 << 15)) ^\n          ((prevWord2 >>> 19) | (prevWord2 << 13)) ^\n          (prevWord2 >>> 10)) >>>\n        0;\n\n      messageSchedule[i] =\n        (messageSchedule[i - 16] + sigma0 + messageSchedule[i - 7] + sigma1) >>> 0;\n    }\n\n    // Initialize working variables to current hash values:\n    let workingStateA = hashState0;\n    let workingStateB = hashState1;\n    let workingStateC = hashState2;\n    let workingStateD = hashState3;\n    let workingStateE = hashState4;\n    let workingStateF = hashState5;\n    let workingStateG = hashState6;\n    let workingStateH = hashState7;\n\n    // Compression function main loop:\n    for (let i = 0; i < 64; i++) {\n      const capitalSigma1 =\n        (((workingStateE >>> 6) | (workingStateE << 26)) ^\n          ((workingStateE >>> 11) | (workingStateE << 21)) ^\n          ((workingStateE >>> 25) | (workingStateE << 7))) >>>\n        0;\n      const chFunction = ((workingStateE & workingStateF) ^ (~workingStateE & workingStateG)) >>> 0;\n      const temp1 =\n        (workingStateH +\n          capitalSigma1 +\n          chFunction +\n          SHA256_ROUND_CONSTANTS[i] +\n          messageSchedule[i]) >>>\n        0;\n\n      const capitalSigma0 =\n        (((workingStateA >>> 2) | (workingStateA << 30)) ^\n          ((workingStateA >>> 13) | (workingStateA << 19)) ^\n          ((workingStateA >>> 22) | (workingStateA << 10))) >>>\n        0;\n      const majFunction =\n        ((workingStateA & workingStateB) ^\n          (workingStateA & workingStateC) ^\n          (workingStateB & workingStateC)) >>>\n        0;\n      const temp2 = (capitalSigma0 + majFunction) >>> 0;\n\n      workingStateH = workingStateG;\n      workingStateG = workingStateF;\n      workingStateF = workingStateE;\n      workingStateE = (workingStateD + temp1) >>> 0;\n      workingStateD = workingStateC;\n      workingStateC = workingStateB;\n      workingStateB = workingStateA;\n      workingStateA = (temp1 + temp2) >>> 0;\n    }\n\n    // Update intermediate hash state:\n    hashState0 = (hashState0 + workingStateA) >>> 0;\n    hashState1 = (hashState1 + workingStateB) >>> 0;\n    hashState2 = (hashState2 + workingStateC) >>> 0;\n    hashState3 = (hashState3 + workingStateD) >>> 0;\n    hashState4 = (hashState4 + workingStateE) >>> 0;\n    hashState5 = (hashState5 + workingStateF) >>> 0;\n    hashState6 = (hashState6 + workingStateG) >>> 0;\n    hashState7 = (hashState7 + workingStateH) >>> 0;\n  }\n\n  // Produce the final 64-character hexadecimal hash:\n  return [\n    hashState0,\n    hashState1,\n    hashState2,\n    hashState3,\n    hashState4,\n    hashState5,\n    hashState6,\n    hashState7,\n  ]\n    .map((x) => x.toString(16).padStart(8, '0'))\n    .join('');\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {\n  assertInInjectionContext,\n  computed,\n  ɵencapsulateResourceError as encapsulateResourceError,\n  inject,\n  Injector,\n  linkedSignal,\n  ɵResourceImpl as ResourceImpl,\n  type ResourceParamsContext,\n  ResourceStreamItem,\n  Signal,\n  signal,\n  TransferState,\n  type ValueEqualityFn,\n  ɵRuntimeError,\n  ɵRuntimeErrorCode,\n} from '@angular/core';\nimport type {Subscription} from 'rxjs';\n\nimport {HttpClient} from './client';\nimport {HttpHeaders} from './headers';\nimport {HttpParams} from './params';\nimport {HttpRequest} from './request';\nimport {HttpResourceOptions, HttpResourceRef, HttpResourceRequest} from './resource_api';\nimport {HttpErrorResponse, HttpEventType, HttpProgressEvent} from './response';\nimport {\n  CACHE_OPTIONS,\n  HTTP_TRANSFER_CACHE_ORIGIN_MAP,\n  retrieveStateFromCache,\n} from './transfer_cache';\n\n/**\n * Type for the `httpRequest` top-level function, which includes the call signatures for the JSON-\n * based `httpRequest` as well as sub-functions for `ArrayBuffer`, `Blob`, and `string` type\n * requests.\n *\n * @publicApi 22.0\n */\nexport interface HttpResourceFn {\n  /**\n   * Create a `Resource` that fetches data with an HTTP GET request to the given URL.\n   *\n   * The resource will update when the URL changes via signals.\n   *\n   * Uses `HttpClient` to make requests and supports interceptors, testing, and the other features\n   * of the `HttpClient` API. Data is parsed as JSON by default - use a sub-function of\n   * `httpResource`, such as `httpResource.text()`, to parse the response differently.\n   *\n   * @publicApi 22.0\n   */\n  <TResult = unknown>(\n    url: (ctx: ResourceParamsContext) => string | undefined,\n    options: HttpResourceOptions<TResult, unknown> & {defaultValue: NoInfer<TResult>},\n  ): HttpResourceRef<TResult>;\n\n  /**\n   * Create a `Resource` that fetches data with an HTTP GET request to the given URL.\n   *\n   * The resource will update when the URL changes via signals.\n   *\n   * Uses `HttpClient` to make requests and supports interceptors, testing, and the other features\n   * of the `HttpClient` API. Data is parsed as JSON by default - use a sub-function of\n   * `httpResource`, such as `httpResource.text()`, to parse the response differently.\n   *\n   * @publicApi 22.0\n   */\n  <TResult = unknown>(\n    url: (ctx: ResourceParamsContext) => string | undefined,\n    options?: HttpResourceOptions<TResult, unknown>,\n  ): HttpResourceRef<TResult | undefined>;\n\n  /**\n   * Create a `Resource` that fetches data with the configured HTTP request.\n   *\n   * The resource will update when the request changes via signals.\n   *\n   * Uses `HttpClient` to make requests and supports interceptors, testing, and the other features\n   * of the `HttpClient` API. Data is parsed as JSON by default - use a sub-function of\n   * `httpResource`, such as `httpResource.text()`, to parse the response differently.\n   *\n   * @publicApi 22.0\n   */\n  <TResult = unknown>(\n    request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n    options: HttpResourceOptions<TResult, unknown> & {defaultValue: NoInfer<TResult>},\n  ): HttpResourceRef<TResult>;\n\n  /**\n   * Create a `Resource` that fetches data with the configured HTTP request.\n   *\n   * The resource will update when the request changes via signals.\n   *\n   * Uses `HttpClient` to make requests and supports interceptors, testing, and the other features\n   * of the `HttpClient` API. Data is parsed as JSON by default - use a sub-function of\n   * `httpResource`, such as `httpResource.text()`, to parse the response differently.\n   *\n   * @publicApi 22.0\n   */\n  <TResult = unknown>(\n    request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n    options?: HttpResourceOptions<TResult, unknown>,\n  ): HttpResourceRef<TResult | undefined>;\n\n  /**\n   * Create a `Resource` that fetches data with the configured HTTP request.\n   *\n   * The resource will update when the URL or request changes via signals.\n   *\n   * Uses `HttpClient` to make requests and supports interceptors, testing, and the other features\n   * of the `HttpClient` API. Data is parsed into an `ArrayBuffer`.\n   *\n   * @publicApi 22.0\n   */\n  arrayBuffer: {\n    <TResult = ArrayBuffer>(\n      url: (ctx: ResourceParamsContext) => string | undefined,\n      options: HttpResourceOptions<TResult, ArrayBuffer> & {defaultValue: NoInfer<TResult>},\n    ): HttpResourceRef<TResult>;\n\n    <TResult = ArrayBuffer>(\n      url: (ctx: ResourceParamsContext) => string | undefined,\n      options?: HttpResourceOptions<TResult, ArrayBuffer>,\n    ): HttpResourceRef<TResult | undefined>;\n\n    <TResult = ArrayBuffer>(\n      request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n      options: HttpResourceOptions<TResult, ArrayBuffer> & {defaultValue: NoInfer<TResult>},\n    ): HttpResourceRef<TResult>;\n\n    <TResult = ArrayBuffer>(\n      request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n      options?: HttpResourceOptions<TResult, ArrayBuffer>,\n    ): HttpResourceRef<TResult | undefined>;\n  };\n\n  /**\n   * Create a `Resource` that fetches data with the configured HTTP request.\n   *\n   * The resource will update when the URL or request changes via signals.\n   *\n   * Uses `HttpClient` to make requests and supports interceptors, testing, and the other features\n   * of the `HttpClient` API. Data is parsed into a `Blob`.\n   *\n   * @publicApi 22.0\n   */\n  blob: {\n    <TResult = Blob>(\n      url: (ctx: ResourceParamsContext) => string | undefined,\n      options: HttpResourceOptions<TResult, Blob> & {defaultValue: NoInfer<TResult>},\n    ): HttpResourceRef<TResult>;\n\n    <TResult = Blob>(\n      url: (ctx: ResourceParamsContext) => string | undefined,\n      options?: HttpResourceOptions<TResult, Blob>,\n    ): HttpResourceRef<TResult | undefined>;\n\n    <TResult = Blob>(\n      request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n      options: HttpResourceOptions<TResult, Blob> & {defaultValue: NoInfer<TResult>},\n    ): HttpResourceRef<TResult>;\n\n    <TResult = Blob>(\n      request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n      options?: HttpResourceOptions<TResult, Blob>,\n    ): HttpResourceRef<TResult | undefined>;\n  };\n\n  /**\n   * Create a `Resource` that fetches data with the configured HTTP request.\n   *\n   * The resource will update when the URL or request changes via signals.\n   *\n   * Uses `HttpClient` to make requests and supports interceptors, testing, and the other features\n   * of the `HttpClient` API. Data is parsed as a `string`.\n   *\n   * @publicApi 22.0\n   */\n  text: {\n    <TResult = string>(\n      url: (ctx: ResourceParamsContext) => string | undefined,\n      options: HttpResourceOptions<TResult, string> & {defaultValue: NoInfer<TResult>},\n    ): HttpResourceRef<TResult>;\n\n    <TResult = string>(\n      url: (ctx: ResourceParamsContext) => string | undefined,\n      options?: HttpResourceOptions<TResult, string>,\n    ): HttpResourceRef<TResult | undefined>;\n\n    <TResult = string>(\n      request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n      options: HttpResourceOptions<TResult, string> & {defaultValue: NoInfer<TResult>},\n    ): HttpResourceRef<TResult>;\n\n    <TResult = string>(\n      request: (ctx: ResourceParamsContext) => HttpResourceRequest | undefined,\n      options?: HttpResourceOptions<TResult, string>,\n    ): HttpResourceRef<TResult | undefined>;\n  };\n}\n\n/**\n * `httpResource` makes a reactive HTTP request and exposes the request status and response value as\n * a `WritableResource`. By default, it assumes that the backend will return JSON data. To make a\n * request that expects a different kind of data, you can use a sub-constructor of `httpResource`,\n * such as `httpResource.text`.\n *\n * @publicApi 22.0\n * @initializerApiFunction\n */\nexport const httpResource: HttpResourceFn = (() => {\n  const jsonFn = makeHttpResourceFn<unknown>('json') as HttpResourceFn;\n  jsonFn.arrayBuffer = makeHttpResourceFn<ArrayBuffer>('arraybuffer');\n  jsonFn.blob = makeHttpResourceFn('blob');\n  jsonFn.text = makeHttpResourceFn('text');\n  return jsonFn;\n})();\n\n/**\n * The expected response type of the server.\n *\n * This is used to parse the response appropriately before returning it to\n * the requestee.\n */\ntype ResponseType = 'arraybuffer' | 'blob' | 'json' | 'text';\ntype RawRequestType =\n  | ((ctx: ResourceParamsContext) => string | undefined)\n  | ((ctx: ResourceParamsContext) => HttpResourceRequest | undefined);\n\nfunction makeHttpResourceFn<TRaw>(responseType: ResponseType) {\n  return function httpResource<TResult = TRaw>(\n    request: RawRequestType,\n    options?: HttpResourceOptions<TResult, TRaw>,\n  ): HttpResourceRef<TResult> {\n    if (ngDevMode && !options?.injector) {\n      assertInInjectionContext(httpResource);\n    }\n    const injector = options?.injector ?? inject(Injector);\n\n    const cacheOptions = injector.get(CACHE_OPTIONS, null, {optional: true});\n    const transferState = injector.get(TransferState, null, {optional: true});\n    const originMap = injector.get(HTTP_TRANSFER_CACHE_ORIGIN_MAP, null, {optional: true});\n\n    const getInitialStream = (req: HttpRequest<unknown> | undefined) => {\n      if (cacheOptions && transferState && req) {\n        const cachedResponse = retrieveStateFromCache(req, cacheOptions, transferState, originMap);\n        if (cachedResponse) {\n          try {\n            const body = cachedResponse.body as TRaw;\n            const parsed = options?.parse ? options.parse(body) : (body as unknown as TResult);\n            return signal({value: parsed});\n          } catch (e) {\n            if (typeof ngDevMode === 'undefined' || ngDevMode) {\n              console.warn(\n                `Angular detected an error while parsing the cached response for the httpResource at \\`${req.url}\\`. ` +\n                  `The resource will fall back to its default value and try again asynchronously.`,\n                e,\n              );\n            }\n          }\n        }\n      }\n      return undefined;\n    };\n\n    return new HttpResourceImpl(\n      injector,\n      (ctx: ResourceParamsContext) => normalizeRequest(ctx, request, responseType),\n      options?.defaultValue,\n      options?.debugName,\n      options?.parse as (value: unknown) => TResult,\n      options?.equal as ValueEqualityFn<unknown>,\n      getInitialStream,\n    ) as HttpResourceRef<TResult>;\n  };\n}\n\nfunction normalizeRequest(\n  ctx: ResourceParamsContext,\n  request: RawRequestType,\n  responseType: ResponseType,\n): HttpRequest<unknown> | undefined {\n  let unwrappedRequest = typeof request === 'function' ? request(ctx) : request;\n  if (unwrappedRequest === undefined) {\n    return undefined;\n  } else if (typeof unwrappedRequest === 'string') {\n    unwrappedRequest = {url: unwrappedRequest};\n  }\n\n  const headers =\n    unwrappedRequest.headers instanceof HttpHeaders\n      ? unwrappedRequest.headers\n      : new HttpHeaders(\n          unwrappedRequest.headers as\n            | Record<string, string | number | Array<string | number>>\n            | undefined,\n        );\n\n  const params =\n    unwrappedRequest.params instanceof HttpParams\n      ? unwrappedRequest.params\n      : new HttpParams({fromObject: unwrappedRequest.params});\n\n  return new HttpRequest(\n    unwrappedRequest.method ?? 'GET',\n    unwrappedRequest.url,\n    unwrappedRequest.body ?? null,\n    {\n      headers,\n      params,\n      reportProgress: unwrappedRequest.reportProgress,\n      withCredentials: unwrappedRequest.withCredentials,\n      keepalive: unwrappedRequest.keepalive,\n      cache: unwrappedRequest.cache as RequestCache,\n      priority: unwrappedRequest.priority as RequestPriority,\n      mode: unwrappedRequest.mode as RequestMode,\n      redirect: unwrappedRequest.redirect as RequestRedirect,\n      responseType,\n      context: unwrappedRequest.context,\n      transferCache: unwrappedRequest.transferCache,\n      credentials: unwrappedRequest.credentials as RequestCredentials,\n      referrer: unwrappedRequest.referrer,\n      referrerPolicy: unwrappedRequest.referrerPolicy as ReferrerPolicy,\n      integrity: unwrappedRequest.integrity,\n      timeout: unwrappedRequest.timeout,\n    },\n  );\n}\nclass HttpResourceImpl<T>\n  extends ResourceImpl<T, HttpRequest<unknown> | undefined>\n  implements HttpResourceRef<T>\n{\n  private client!: HttpClient;\n  private _headers = linkedSignal({\n    source: this.extRequest,\n    computation: () => undefined as HttpHeaders | undefined,\n  });\n  private _progress = linkedSignal({\n    source: this.extRequest,\n    computation: () => undefined as HttpProgressEvent | undefined,\n  });\n  private _statusCode = linkedSignal({\n    source: this.extRequest,\n    computation: () => undefined as number | undefined,\n  });\n\n  readonly headers = computed(() =>\n    this.status() === 'resolved' || this.status() === 'error' ? this._headers() : undefined,\n  );\n  readonly progress = this._progress.asReadonly();\n  readonly statusCode = this._statusCode.asReadonly();\n\n  constructor(\n    injector: Injector,\n    request: (ctx: ResourceParamsContext) => HttpRequest<T> | undefined,\n    defaultValue: T,\n    debugName?: string,\n    parse?: (value: unknown) => T,\n    equal?: ValueEqualityFn<unknown>,\n    getInitialStream?: (\n      request: HttpRequest<unknown> | undefined,\n    ) => Signal<ResourceStreamItem<T>> | undefined,\n  ) {\n    super(\n      request,\n      ({params: request, abortSignal}) => {\n        let sub: Subscription | undefined;\n        // In the unlikely case the request returns synchronously we want to make sure the observable\n        // is subscribe even if it isn't initialized yet.\n        let aborted = false;\n\n        // Track the abort listener so it can be removed if the Observable completes (as a memory\n        // optimization).\n        const onAbort = () => {\n          aborted = true;\n          sub?.unsubscribe();\n        };\n        abortSignal.addEventListener('abort', onAbort);\n\n        // Start off stream as undefined.\n        const stream = signal<ResourceStreamItem<T>>({value: undefined as T});\n        let resolve: ((value: Signal<ResourceStreamItem<T>>) => void) | undefined;\n        const promise = new Promise<Signal<ResourceStreamItem<T>>>((r) => (resolve = r));\n\n        const send = (value: ResourceStreamItem<T>): void => {\n          stream.set(value);\n          resolve?.(stream);\n          resolve = undefined;\n        };\n\n        sub = this.client.request(request!).subscribe({\n          next: (event) => {\n            switch (event.type) {\n              case HttpEventType.Response:\n                this._headers.set(event.headers);\n                this._statusCode.set(event.status);\n                try {\n                  send({value: parse ? parse(event.body) : (event.body as T)});\n                } catch (error) {\n                  send({error: encapsulateResourceError(error)});\n                }\n                break;\n              case HttpEventType.DownloadProgress:\n                this._progress.set(event);\n                break;\n            }\n          },\n          error: (error) => {\n            if (error instanceof HttpErrorResponse) {\n              this._headers.set(error.headers);\n              this._statusCode.set(error.status);\n            }\n\n            send({error});\n            abortSignal.removeEventListener('abort', onAbort);\n          },\n          complete: () => {\n            if (resolve) {\n              send({\n                error: new ɵRuntimeError(\n                  ɵRuntimeErrorCode.RESOURCE_COMPLETED_BEFORE_PRODUCING_VALUE,\n                  ngDevMode && 'Resource completed before producing a value',\n                ),\n              });\n            }\n            abortSignal.removeEventListener('abort', onAbort);\n          },\n        });\n\n        if (aborted) {\n          sub.unsubscribe();\n        }\n\n        return promise;\n      },\n      defaultValue,\n      equal,\n      debugName,\n      injector,\n      undefined,\n      getInitialStream,\n    );\n    this.client = injector.get(HttpClient);\n  }\n\n  override set(value: T): void {\n    super.set(value);\n\n    this._headers.set(undefined);\n    this._progress.set(undefined);\n    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