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text: string }\nexport type GoodPageCache = {\n page: ComponentType\n mod: any\n styleSheets: StyleSheetTuple[]\n}\n\nexport default class PageLoader {\n private buildId: string\n private assetPrefix: string\n\n private promisedSsgManifest?: Promise<ClientSsgManifest>\n private promisedDevPagesManifest?: Promise<any>\n public routeLoader: RouteLoader\n\n constructor(buildId: string, assetPrefix: string) {\n this.routeLoader = createRouteLoader(assetPrefix)\n\n this.buildId = buildId\n this.assetPrefix = assetPrefix\n\n /** @type {Promise<Set<string>>} */\n this.promisedSsgManifest = new Promise((resolve) => {\n if ((window as any).__SSG_MANIFEST) {\n resolve((window as any).__SSG_MANIFEST)\n } else {\n ;(window as any).__SSG_MANIFEST_CB = () => {\n resolve((window as any).__SSG_MANIFEST)\n }\n }\n })\n }\n\n getPageList() {\n if (process.env.NODE_ENV === 'production') {\n return getClientBuildManifest().then((manifest) => manifest.sortedPages)\n } else {\n if ((window as any).__DEV_PAGES_MANIFEST) {\n return (window as any).__DEV_PAGES_MANIFEST.pages\n } else {\n if (!this.promisedDevPagesManifest) {\n this.promisedDevPagesManifest = fetch(\n `${this.assetPrefix}/_next/static/development/_devPagesManifest.json`\n )\n .then((res) => res.json())\n .then((manifest) => {\n ;(window as any).__DEV_PAGES_MANIFEST = manifest\n return manifest.pages\n })\n .catch((err) => {\n console.log(`Failed to fetch devPagesManifest`, err)\n })\n }\n return this.promisedDevPagesManifest\n }\n }\n }\n\n /**\n * @param {string} href the route href (file-system path)\n * @param {string} asPath the URL as shown in browser (virtual path); used for dynamic routes\n * @returns {string}\n */\n getDataHref(\n href: string,\n asPath: string,\n ssg: boolean,\n locale?: string | false\n ): string {\n const { pathname: hrefPathname, query, search } = parseRelativeUrl(href)\n const { pathname: asPathname } = parseRelativeUrl(asPath)\n const route = normalizeRoute(hrefPathname)\n\n const getHrefForSlug = (path: string) => {\n const dataRoute = getAssetPathFromRoute(\n removePathTrailingSlash(addLocale(path, locale)),\n '.json'\n )\n return addBasePath(\n `/_next/data/${this.buildId}${dataRoute}${ssg ? '' : search}`\n )\n }\n\n const isDynamic: boolean = isDynamicRoute(route)\n const interpolatedRoute = isDynamic\n ? interpolateAs(hrefPathname, asPathname, query).result\n : ''\n\n return isDynamic\n ? interpolatedRoute && getHrefForSlug(interpolatedRoute)\n : getHrefForSlug(route)\n }\n\n /**\n * @param {string} route - the route (file-system path)\n */\n _isSsg(route: string): Promise<boolean> {\n return this.promisedSsgManifest!.then((s: ClientSsgManifest) =>\n s.has(route)\n )\n }\n\n loadPage(route: string): Promise<GoodPageCache> {\n return this.routeLoader.loadRoute(route).then((res) => {\n if ('component' in res) {\n return {\n page: res.component,\n mod: res.exports,\n styleSheets: res.styles.map((o) => ({\n href: o.href,\n text: o.content,\n })),\n }\n }\n throw res.error\n })\n }\n\n prefetch(route: string): Promise<void> {\n return this.routeLoader.prefetch(route)\n }\n}\n"]} |