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fix(demo): POST waitlist to canonical www host to avoid preflight redirect

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The demo (demo.pcbjam.com) cross-posts the waitlist to the marketing site's
serverless endpoint. It targeted the apex pcbjam.com, which 308-redirects to
www on Vercel; a CORS preflight can't follow redirects, so the OPTIONS failed
("Redirect is not allowed for a preflight request") and the POST never landed.

Point the waitlist target at the canonical www host. www.pcbjam.com already
returns 204 with access-control-allow-origin: https://demo.pcbjam.com, so the
preflight passes. Landing/version-badge link stays on the apex.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01REwWZGkAz1AZUJw8yqxkCN
This commit is contained in:
Viktor Vaczi 2026-07-04 11:39:38 +02:00
commit 34d2602132
3 changed files with 15 additions and 4 deletions
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9
scripts/deploy/build-demo.mjs
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@ -58,7 +58,14 @@ function parseArgs(argv) {
a.cdn = a.cdn.replace(/\/+$/, "");
a.repo = a.repo.replace(/\/+$/, "");
a.landing = a.landing.replace(/\/+$/, "");
a.waitlist = a.waitlist || `${a.landing}/api/waitlist`;
// The cross-origin demo POSTs the waitlist to the marketing site's serverless
// endpoint. The apex (pcbjam.com) 308-redirects to www on Vercel, and a CORS
// preflight can't follow redirects, so the demo must hit the canonical www host
// directly. Derive from --landing for custom/staging hosts, but pin the
// production apex to www. (Landing/version-badge link stays on the apex.)
const waitlistHost =
a.landing === "https://pcbjam.com" ? "https://www.pcbjam.com" : a.landing;
a.waitlist = a.waitlist || `${waitlistHost}/api/waitlist`;
return a;
}