/opt/canhelp/node_modules/next/dist/build/webpack/loaders
Edit: /opt/canhelp/node_modules/next/dist/build/webpack/loaders/next-metadata-route-loader.js.map (13704B)
{"version":3,"sources":["../../../../src/build/webpack/loaders/next-metadata-route-loader.ts"],"sourcesContent":["import type webpack from 'webpack'\nimport fs from 'fs'\nimport path from 'path'\nimport { imageExtMimeTypeMap } from '../../../lib/mime-type'\nimport { getLoaderModuleNamedExports } from './utils'\n\nfunction errorOnBadHandler(resourcePath: string) {\n return `\n if (typeof handler !== 'function') {\n throw new Error('Default export is missing in ${JSON.stringify(\n resourcePath\n )}')\n }\n `\n}\n\n/* re-export the userland route configs */\nasync function createReExportsCode(\n resourcePath: string,\n loaderContext: webpack.LoaderContext
\n) {\n const exportNames = await getLoaderModuleNamedExports(\n resourcePath,\n loaderContext\n )\n // Re-export configs but avoid conflicted exports\n const reExportNames = exportNames.filter(\n (name) => name !== 'default' && name !== 'generateSitemaps'\n )\n\n return reExportNames.length > 0\n ? `export { ${reExportNames.join(', ')} } from ${JSON.stringify(\n resourcePath\n )}\\n`\n : ''\n}\n\nconst cacheHeader = {\n none: 'no-cache, no-store',\n longCache: 'public, immutable, no-transform, max-age=31536000',\n revalidate: 'public, max-age=0, must-revalidate',\n}\n\nexport type MetadataRouteLoaderOptions = {\n // Using separate argument to avoid json being parsed and hit error\n // x-ref: https://github.com/vercel/next.js/pull/62615\n filePath: string\n isDynamicRouteExtension: '1' | '0'\n}\n\nexport function getFilenameAndExtension(resourcePath: string) {\n const filename = path.basename(resourcePath)\n const [name, ext] = filename.split('.', 2)\n return {\n name,\n ext,\n }\n}\n\nfunction getContentType(resourcePath: string) {\n let { name, ext } = getFilenameAndExtension(resourcePath)\n if (ext === 'jpg') ext = 'jpeg'\n\n if (name === 'favicon' && ext === 'ico') return 'image/x-icon'\n if (name === 'sitemap') return 'application/xml'\n if (name === 'robots') return 'text/plain'\n if (name === 'manifest') return 'application/manifest+json'\n\n if (ext === 'png' || ext === 'jpeg' || ext === 'ico' || ext === 'svg') {\n return imageExtMimeTypeMap[ext]\n }\n return 'text/plain'\n}\n\nasync function getStaticAssetRouteCode(\n resourcePath: string,\n fileBaseName: string\n) {\n const cache =\n fileBaseName === 'favicon'\n ? 'public, max-age=0, must-revalidate'\n : process.env.NODE_ENV !== 'production'\n ? cacheHeader.none\n : cacheHeader.longCache\n\n const isTwitter = fileBaseName === 'twitter-image'\n const isOpenGraph = fileBaseName === 'opengraph-image'\n // Twitter image file size limit is 5MB.\n // General Open Graph image file size limit is 8MB.\n // x-ref: https://developer.x.com/en/docs/x-for-websites/cards/overview/summary\n // x-ref(facebook): https://developers.facebook.com/docs/sharing/webmasters/images\n const fileSizeLimit = isTwitter ? 5 : 8\n const imgName = isTwitter ? 'Twitter' : 'Open Graph'\n\n const code = `\\\n/* static asset route */\nimport { NextResponse } from 'next/server'\n\nconst contentType = ${JSON.stringify(getContentType(resourcePath))}\nconst buffer = Buffer.from(${JSON.stringify(\n (await fs.promises.readFile(resourcePath)).toString('base64')\n )}, 'base64'\n )\n\nif (${isTwitter || isOpenGraph}) {\n const fileSizeInMB = buffer.byteLength / 1024 / 1024\n if (fileSizeInMB > ${fileSizeLimit}) {\n throw new Error('File size for ${imgName} image ${JSON.stringify(resourcePath)} exceeds ${fileSizeLimit}MB. ' +\n \\`(Current: \\${fileSizeInMB.toFixed(2)}MB)\\n\\` +\n 'Read more: https://nextjs.org/docs/app/api-reference/file-conventions/metadata/opengraph-image#image-files-jpg-png-gif'\n )\n }\n}\n\nexport function GET() {\n return new NextResponse(buffer, {\n headers: {\n 'Content-Type': contentType,\n 'Cache-Control': ${JSON.stringify(cache)},\n },\n })\n}\n\nexport const dynamic = 'force-static'\n`\n return code\n}\n\nasync function getDynamicTextRouteCode(\n resourcePath: string,\n loaderContext: webpack.LoaderContext\n) {\n return `\\\n/* dynamic asset route */\nimport { NextResponse } from 'next/server'\nimport handler from ${JSON.stringify(resourcePath)}\nimport { resolveRouteData } from 'next/dist/build/webpack/loaders/metadata/resolve-route-data'\n\nconst contentType = ${JSON.stringify(getContentType(resourcePath))}\nconst fileType = ${JSON.stringify(getFilenameAndExtension(resourcePath).name)}\n\n${errorOnBadHandler(resourcePath)}\n${await createReExportsCode(resourcePath, loaderContext)}\n\nexport async function GET() {\n const data = await handler()\n const content = resolveRouteData(data, fileType)\n\n return new NextResponse(content, {\n headers: {\n 'Content-Type': contentType,\n 'Cache-Control': ${JSON.stringify(cacheHeader.revalidate)},\n },\n })\n}\n`\n}\n\n// /[id]/route.js\nasync function getDynamicImageRouteCode(\n resourcePath: string,\n loaderContext: webpack.LoaderContext\n) {\n return `\\\n/* dynamic image route */\nimport { NextResponse } from 'next/server'\nimport * as userland from ${JSON.stringify(resourcePath)}\n\nconst imageModule = { ...userland }\n\nconst handler = imageModule.default\nconst generateImageMetadata = imageModule.generateImageMetadata\n\n${errorOnBadHandler(resourcePath)}\n${await createReExportsCode(resourcePath, loaderContext)}\n\nexport async function GET(_, ctx) {\n const params = await ctx.params\n const { __metadata_id__, ...rest } = params || {}\n const restParams = params ? rest : undefined\n const targetId = __metadata_id__\n let id = undefined\n \n if (generateImageMetadata) {\n const imageMetadata = await generateImageMetadata({ params: restParams })\n id = imageMetadata.find((item) => {\n if (process.env.NODE_ENV !== 'production') {\n if (item?.id == null) {\n throw new Error('id property is required for every item returned from generateImageMetadata')\n }\n }\n return item.id.toString() === targetId\n })?.id\n if (id == null) {\n return new NextResponse('Not Found', {\n status: 404,\n })\n }\n }\n\n return handler({ params: restParams, id })\n}\n`\n}\n\nasync function getDynamicSitemapRouteCode(\n resourcePath: string,\n loaderContext: webpack.LoaderContext\n) {\n let staticGenerationCode = ''\n\n const exportNames = await getLoaderModuleNamedExports(\n resourcePath,\n loaderContext\n )\n\n const hasGenerateSitemaps = exportNames.includes('generateSitemaps')\n\n if (process.env.NODE_ENV === 'production' && hasGenerateSitemaps) {\n staticGenerationCode = `\\\n /* dynamic sitemap route */\n export async function generateStaticParams() {\n const sitemaps = await sitemapModule.generateSitemaps()\n const params = []\n\n for (const item of sitemaps) {\n params.push({ __metadata_id__: item.id.toString() + '.xml' })\n }\n return params\n }\n `\n }\n\n const code = `\\\nimport { NextResponse } from 'next/server'\nimport * as userland from ${JSON.stringify(resourcePath)}\nimport { resolveRouteData } from 'next/dist/build/webpack/loaders/metadata/resolve-route-data'\n\nconst sitemapModule = { ...userland }\nconst handler = sitemapModule.default\nconst contentType = ${JSON.stringify(getContentType(resourcePath))}\nconst fileType = ${JSON.stringify(getFilenameAndExtension(resourcePath).name)}\n\n${errorOnBadHandler(resourcePath)}\n${await createReExportsCode(resourcePath, loaderContext)}\n\nexport async function GET(_, ctx) {\n const { __metadata_id__: id, ...params } = await ctx.params || {}\n const hasXmlExtension = id ? id.endsWith('.xml') : false\n\n if (id && !hasXmlExtension) {\n return new NextResponse('Not Found', {\n status: 404,\n })\n }\n\n if (process.env.NODE_ENV !== 'production' && sitemapModule.generateSitemaps) {\n const sitemaps = await sitemapModule.generateSitemaps()\n for (const item of sitemaps) {\n if (item?.id == null) {\n throw new Error('id property is required for every item returned from generateSitemaps')\n }\n }\n }\n\n const targetId = id && hasXmlExtension ? id.slice(0, -4) : undefined\n\n const data = await handler({ id: targetId })\n const content = resolveRouteData(data, fileType)\n\n return new NextResponse(content, {\n headers: {\n 'Content-Type': contentType,\n 'Cache-Control': ${JSON.stringify(cacheHeader.revalidate)},\n },\n })\n}\n\n${staticGenerationCode}\n`\n return code\n}\n\n// When it's static route, it could be favicon.ico, sitemap.xml, robots.txt etc.\n// TODO-METADATA: improve the cache control strategy\nconst nextMetadataRouterLoader: webpack.LoaderDefinitionFunction =\n async function () {\n const { isDynamicRouteExtension, filePath } = this.getOptions()\n const { name: fileBaseName } = getFilenameAndExtension(filePath)\n this.addDependency(filePath)\n\n let code = ''\n if (isDynamicRouteExtension === '1') {\n if (fileBaseName === 'robots' || fileBaseName === 'manifest') {\n code = await getDynamicTextRouteCode(filePath, this)\n } else if (fileBaseName === 'sitemap') {\n code = await getDynamicSitemapRouteCode(filePath, this)\n } else {\n code = await getDynamicImageRouteCode(filePath, this)\n }\n } else {\n code = await getStaticAssetRouteCode(filePath, fileBaseName)\n }\n\n return code\n }\n\nexport default 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