57 lines
2.9 KiB
JavaScript
57 lines
2.9 KiB
JavaScript
/**
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* Serializes sitemap entries to an XML STRING with an XSL stylesheet reference,
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* so /sitemap.xml renders as a readable table in the browser (not raw XML) while
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* staying a valid sitemap for crawlers.
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*
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* Why this exists alongside the Next MetadataRoute sitemap: Next's app/sitemap.ts
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* (returning SitemapEntry[]) does NOT let you inject <?xml-stylesheet?>. To get
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* the styled table, serve a custom route that returns this string instead:
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*
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* // app/sitemap.xml/route.ts
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* import { buildSitemapXml } from '@intecion/ipal-kit'
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* import { sitemap } from '@/lib/content' // your entries source
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* export const dynamic = 'force-dynamic'
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* export async function GET() {
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* const entries = await sitemap()
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* const xml = buildSitemapXml(entries, { stylesheetUrl: '/sitemap.xsl' })
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* return new Response(xml, {
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* headers: { 'Content-Type': 'application/xml; charset=utf-8' },
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* })
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* }
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*
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* Put sitemap.xsl in the project's /public (copy from the plugin's assets, or
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* serve it from a route). The <?xml-stylesheet?> points browsers at it; crawlers
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* ignore it and read the XML. Include hreflang alternates as <xhtml:link>.
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*
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* NOTE: if you use this custom route, DON'T also keep app/sitemap.ts — pick one
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* (the styled route OR the Next MetadataRoute). Two sitemaps at different paths
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* confuse crawlers.
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*/ export function buildSitemapXml(entries, opts = {}) {
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const { stylesheetUrl } = opts;
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const esc = (s)=>s.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"').replace(/'/g, ''');
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const urls = entries.map((e)=>{
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const parts = [
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` <loc>${esc(e.url)}</loc>`
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];
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if (e.lastModified) {
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const iso = e.lastModified instanceof Date ? e.lastModified.toISOString() : String(e.lastModified);
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parts.push(` <lastmod>${esc(iso)}</lastmod>`);
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}
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if (e.changeFrequency) parts.push(` <changefreq>${e.changeFrequency}</changefreq>`);
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if (typeof e.priority === 'number') parts.push(` <priority>${e.priority}</priority>`);
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// hreflang alternates
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const alternates = e.alternates?.languages;
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if (alternates) {
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for (const [lang, href] of Object.entries(alternates)){
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if (typeof href === 'string') {
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parts.push(` <xhtml:link rel="alternate" hreflang="${esc(lang)}" href="${esc(href)}"/>`);
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}
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}
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}
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return ` <url>\n${parts.join('\n')}\n </url>`;
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}).join('\n');
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const stylesheet = stylesheetUrl ? `<?xml-stylesheet type="text/xsl" href="${esc(stylesheetUrl)}"?>\n` : '';
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return `<?xml version="1.0" encoding="UTF-8"?>\n` + stylesheet + `<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" ` + `xmlns:xhtml="http://www.w3.org/1999/xhtml">\n` + urls + `\n</urlset>`;
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}
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//# sourceMappingURL=buildSitemapXml.js.map
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