Files
ipal-kit/dist/modules/seo/buildSitemapXml.js
T

58 lines
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JavaScript

/**
* Serializes sitemap entries to a clean, indented XML STRING — valid for crawlers
* and readable in the browser as the native XML tree (indented, collapsible,
* syntax-highlighted by the browser itself).
*
* NO XSLT stylesheet: browsers (Chrome et al.) are REMOVING XSLT support, so a
* <?xml-stylesheet?> approach is a dead end — it shows a deprecation warning now
* and will break soon. Instead we serve plain XML with the correct Content-Type;
* the browser renders its built-in formatted XML view (the "code tree" look) with
* no transformation needed.
*
* // app/sitemap.xml/route.ts
* import { buildSitemapXml } from '@intecion/ipal-kit'
* import { sitemap } from '@/lib/content'
* export const dynamic = 'force-dynamic'
* export async function GET() {
* const entries = await sitemap()
* const xml = buildSitemapXml(entries)
* return new Response(xml, {
* headers: { 'Content-Type': 'application/xml; charset=utf-8' },
* })
* }
*
* The indentation makes the raw XML pleasant to read; the browser's default XML
* viewer adds the tree/fold UI. Crawlers read the XML as usual.
*
* NOTE: if you use this custom route, DON'T also keep app/sitemap.ts — pick one
* (this route OR the Next MetadataRoute). Two sitemaps confuse crawlers.
*/ export function buildSitemapXml(entries) {
const esc = (s)=>s.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&apos;');
const urls = entries.map((e)=>{
const parts = [
` <loc>${esc(e.url)}</loc>`
];
if (e.lastModified) {
const iso = e.lastModified instanceof Date ? e.lastModified.toISOString() : String(e.lastModified);
parts.push(` <lastmod>${esc(iso)}</lastmod>`);
}
if (e.changeFrequency) {
parts.push(` <changefreq>${e.changeFrequency}</changefreq>`);
}
if (typeof e.priority === 'number') {
parts.push(` <priority>${e.priority}</priority>`);
}
const alternates = e.alternates?.languages;
if (alternates) {
for (const [lang, href] of Object.entries(alternates)){
if (typeof href === 'string') {
parts.push(` <xhtml:link rel="alternate" hreflang="${esc(lang)}" href="${esc(href)}"/>`);
}
}
}
return ` <url>\n${parts.join('\n')}\n </url>`;
}).join('\n');
return `<?xml version="1.0" encoding="UTF-8"?>\n` + `<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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