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version-switcher: fetch switcher.json fresh (bypass cache) #5

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Merged
coretl merged 1 commit into from
Jun 19, 2026
Merged

version-switcher: fetch switcher.json fresh (bypass cache) #5

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14 changes: 12 additions & 2 deletions plugins/version-switcher.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -374,8 +374,18 @@ export async function render({ model, el }) {
}

try {
const resolved = new URL(jsonUrl, window.location.href).href;
const res = await fetch(resolved, { credentials: "omit" });
// switcher.json changes every deploy (a new version, a closed PR), and
// GitHub Pages serves it with Cache-Control: max-age=600, so a plain fetch
// can show a list that's up to ~10 min stale. Bust both caches: a unique
// query string forces a CDN-edge miss (→ origin), and `no-store` stops the
// browser serving its own cached copy. switcher.json is tiny, so always
// fetching fresh is cheap and keeps the dropdown current.
const resolved = new URL(jsonUrl, window.location.href);
resolved.searchParams.set("_", Date.now().toString());
const res = await fetch(resolved.href, {
credentials: "omit",
cache: "no-store",
});
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const raw = await res.json();

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