Phase2: Invoicecomputation/AdminpricingUI/Ainvoicemgnt

src/app/api/admin/billing/invoices/[id]/pdf/route.ts

@@ -26,9 +26,16 @@ export async function GET(
   if (!pdf) {
     return new NextResponse("Not found", { status: 404 });
   }
-  // Construct a response that the browser will render inline (PDF
-  // viewer) but also offer to download with the right filename.
-  return new NextResponse(pdf.data, {
+  // Web `Response`'s `BodyInit` doesn't include Node's `Buffer` — pg
+  // returns bytea as Buffer but Next/the runtime want a BufferSource.
+  // Wrap into a zero-copy Uint8Array view (Buffer extends Uint8Array
+  // under the hood, but TypeScript treats them as distinct).
+  const body = new Uint8Array(
+    pdf.data.buffer,
+    pdf.data.byteOffset,
+    pdf.data.byteLength
+  );
+  return new NextResponse(body, {
     status: 200,
     headers: {
       "Content-Type": "application/pdf",