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fix: grafikProxy gibt 404 statt HTML zurück für JS/CSS-Assets bei Upstream-Fehler

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Verhindert MIME-Type-Fehler im Browser wenn upstream-Server für
JS/CSS-Dateien eine HTML-Fehlerseite zurückgibt.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Reinhard X. Fürst
2026-06-06 18:22:53 +02:00
parent 421b589169
commit 96ba03b909
1 changed files with 11 additions and 1 deletions
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app/api/statistik/grafik/proxy.ts
+11 -1
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@@ -93,7 +93,17 @@ export async function grafikProxy(req: Request, slug?: string[]) {
}); });
const contentType = upstream.headers.get('content-type') || outHeaders['content-type'] || ''; const contentType = upstream.headers.get('content-type') || outHeaders['content-type'] || '';
if (contentType.toLowerCase().includes('text/html')) { const isHtmlResponse = contentType.toLowerCase().includes('text/html');
// JS/CSS/font assets that come back as HTML are upstream errors (404, redirect pages).
// Return a 404 so the browser doesn't refuse to execute them as wrong MIME type.
const assetExtension = /\.(js|css|woff2?|ttf|eot|png|jpg|gif|svg|ico)(\?|$)/i;
const requestPath = new URL(req.url).pathname;
if (isHtmlResponse && slug?.length && assetExtension.test(requestPath)) {
return new NextResponse(null, { status: 404 });
}
if (isHtmlResponse) {
const text = Buffer.from(bodyBuf).toString('utf8'); const text = Buffer.from(bodyBuf).toString('utf8');
const cleaned = rewriteHtml(text); const cleaned = rewriteHtml(text);
outHeaders['content-type'] = 'text/html; charset=utf-8'; outHeaders['content-type'] = 'text/html; charset=utf-8';