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🔨 301 legacy /en/latest URLs to canonical paths #4

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Merged
lucasrodes merged 1 commit into from
May 19, 2026
Merged

🔨 301 legacy /en/latest URLs to canonical paths #4

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10 changes: 10 additions & 0 deletions _worker.js
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Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,20 @@ const SUBPROJECTS = {
"/projects/owid-grapher-py/": "https://owid-grapher-py-docs.pages.dev",
};

// Legacy ReadTheDocs URLs include an /en/latest segment (e.g.
// /projects/etl/en/latest/, /en/latest/). 301 to the canonical form so
// existing inbound links from blog posts / Slack / bookmarks keep working.
const RTD_LEGACY = /\/en\/latest(\/|$)/;

export default {
async fetch(request, env) {
const url = new URL(request.url);

if (RTD_LEGACY.test(url.pathname)) {
url.pathname = url.pathname.replace(RTD_LEGACY, "$1") || "/";
return Response.redirect(url.toString(), 301);
}

for (const [prefix, origin] of Object.entries(SUBPROJECTS)) {
if (url.pathname.startsWith(prefix)) {
const target = `${origin}${url.pathname}${url.search}`;
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