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Suppress self-recovering "JWT expired" errors from background Supabase client #39

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Merged
jonbng merged 1 commit into from
Jul 12, 2026
Merged

Suppress self-recovering "JWT expired" errors from background Supabase client #39

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19 changes: 19 additions & 0 deletions entrypoints/background.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -274,6 +274,23 @@ function isNonActionablePostgrestError(error: unknown): boolean {
return code === 'PGRST116';
}

// Expired-JWT errors are a self-recovering auth-transition state, not a bug.
// `ensureSessionReady()` refreshes the access token before each query, but its
// catch block deliberately lets the request run anyway when the refresh fails
// (revoked refresh_token, network) — PostgREST then rejects it with "JWT
// expired" (code PGRST301). The next request re-auths via the QR flow, so this
// recovers on its own; reporting it just burns PostHog free-tier quota. Mirrors
// the PGRST116 / Unauthorized suppressions above.
function isExpiredJwtError(error: unknown): boolean {
const code = typeof (error as { code?: unknown })?.code === 'string'
? (error as { code: string }).code
: '';
if (code === 'PGRST301') return true;
const message = extractErrorMessage(error);
if (!message) return false;
return /\bjwt expired\b/i.test(message);
}

async function captureSupabaseError(
error: unknown,
context: {
Expand All @@ -291,6 +308,7 @@ async function captureSupabaseError(
try {
if (isTransientNetworkError(error)) return;
if (isNonActionablePostgrestError(error)) return;
if (isExpiredJwtError(error)) return;
if (context.action === 'rpc' && isAuthOwnershipError(error)) return;

const identity = await getAnalyticsIdentity({
Expand Down Expand Up @@ -393,6 +411,7 @@ async function handleMutate(msg: Extract<SupabaseMessage, { type: 'bl-sb:mutate'
}

async function handleRpc(msg: Extract<SupabaseMessage, { type: 'bl-sb:rpc' }>): Promise<SupabaseResponse> {
await ensureSessionReady();
const supabase = getSupabase();
const { data, error } = await supabase.rpc(msg.fn as string, msg.args);
if (error) {
Expand Down
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