/opt/canhelp/node_modules/next/dist/server/lib
Edit: /opt/canhelp/node_modules/next/dist/server/lib/i18n-provider.js.map (9046B)
{"version":3,"sources":["../../../src/server/lib/i18n-provider.ts"],"sourcesContent":["import type { DomainLocale, I18NConfig } from '../config-shared'\nimport { getRequestMeta, type NextIncomingMessage } from '../request-meta'\n\n/**\n * The result of matching a locale aware route.\n */\nexport interface LocaleAnalysisResult {\n /**\n * The pathname without the locale prefix (if any).\n */\n pathname: string\n\n /**\n * The detected locale. If no locale was detected, this will be `undefined`.\n */\n detectedLocale?: string\n\n /**\n * True if the locale was inferred from the default locale.\n */\n inferredFromDefault: boolean\n}\n\ntype LocaleAnalysisOptions = {\n /**\n * When provided, it will be used as the default locale if the locale\n * cannot be inferred from the pathname.\n */\n defaultLocale?: string\n}\n\n/**\n * The I18NProvider is used to match locale aware routes, detect the locale from\n * the pathname and hostname and normalize the pathname by removing the locale\n * prefix.\n */\nexport class I18NProvider {\n private readonly lowerCaseLocales: ReadonlyArray
\n private readonly lowerCaseDomains?: ReadonlyArray<\n DomainLocale & {\n // The configuration references a domain with an optional port, but the\n // hostname is always the domain without the port and is used for\n // matching.\n hostname: string\n }\n >\n\n constructor(public readonly config: Readonly) {\n if (!config.locales.length) {\n throw new Error('Invariant: No locales provided')\n }\n\n this.lowerCaseLocales = config.locales.map((locale) => locale.toLowerCase())\n this.lowerCaseDomains = config.domains?.map((domainLocale) => {\n const domain = domainLocale.domain.toLowerCase()\n return {\n defaultLocale: domainLocale.defaultLocale.toLowerCase(),\n hostname: domain.split(':', 1)[0],\n domain,\n locales: domainLocale.locales?.map((locale) => locale.toLowerCase()),\n http: domainLocale.http,\n }\n })\n }\n\n /**\n * Detects the domain locale from the hostname and the detected locale if\n * provided.\n *\n * @param hostname The hostname to detect the domain locale from, this must be lowercased.\n * @param detectedLocale The detected locale to use if the hostname does not match.\n * @returns The domain locale if found, `undefined` otherwise.\n */\n public detectDomainLocale(\n hostname?: string,\n detectedLocale?: string\n ): DomainLocale | undefined {\n if (!hostname || !this.lowerCaseDomains || !this.config.domains) return\n\n if (detectedLocale) detectedLocale = detectedLocale.toLowerCase()\n\n for (let i = 0; i < this.lowerCaseDomains.length; i++) {\n const domainLocale = this.lowerCaseDomains[i]\n if (\n // We assume that the hostname is already lowercased.\n domainLocale.hostname === hostname ||\n // Configuration validation ensures that the locale is not repeated in\n // other domains locales.\n domainLocale.locales?.some((locale) => locale === detectedLocale)\n ) {\n return this.config.domains[i]\n }\n }\n\n return\n }\n\n /**\n * Pulls the pre-computed locale and inference results from the query\n * object.\n *\n * @param req the request object\n * @param pathname the pathname that could contain a locale prefix\n * @returns the locale analysis result\n */\n public fromRequest(\n req: NextIncomingMessage,\n pathname: string\n ): LocaleAnalysisResult {\n const detectedLocale = getRequestMeta(req, 'locale')\n\n // If a locale was detected on the query, analyze the pathname to ensure\n // that the locale matches.\n if (detectedLocale) {\n const analysis = this.analyze(pathname)\n\n // If the analysis contained a locale we should validate it against the\n // query and strip it from the pathname.\n if (analysis.detectedLocale) {\n if (analysis.detectedLocale !== detectedLocale) {\n console.warn(\n `The detected locale does not match the locale in the query. Expected to find '${detectedLocale}' in '${pathname}' but found '${analysis.detectedLocale}'}`\n )\n }\n\n pathname = analysis.pathname\n }\n }\n\n return {\n pathname,\n detectedLocale,\n inferredFromDefault:\n getRequestMeta(req, 'localeInferredFromDefault') ?? false,\n }\n }\n\n /**\n * Analyzes the pathname for a locale and returns the pathname without it.\n *\n * @param pathname The pathname that could contain a locale prefix.\n * @param options The options to use when matching the locale.\n * @returns The matched locale and the pathname without the locale prefix\n * (if any).\n */\n public analyze(\n pathname: string,\n options: LocaleAnalysisOptions = {}\n ): LocaleAnalysisResult {\n let detectedLocale: string | undefined = options.defaultLocale\n\n // By default, we assume that the default locale was inferred if there was\n // no detected locale.\n let inferredFromDefault = typeof detectedLocale === 'string'\n\n // The first segment will be empty, because it has a leading `/`. If\n // there is no further segment, there is no locale (or it's the default).\n const segments = pathname.split('/', 2)\n if (!segments[1])\n return {\n detectedLocale,\n pathname,\n inferredFromDefault,\n }\n\n // The second segment will contain the locale part if any.\n const segment = segments[1].toLowerCase()\n\n // See if the segment matches one of the locales. 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