Migrating shared-operations to TS (WIP)

shared-operations/functions/rotatePages.ts

@@ -0,0 +1,19 @@
+
+import { PDFDocument, ParseSpeeds, degrees } from 'pdf-lib';
+
+export async function rotatePages(snapshot: string | Uint8Array | ArrayBuffer, rotation: number): Promise<Uint8Array> {
+    // Load the original PDF file
+    const pdfDoc = await PDFDocument.load(snapshot, {
+        parseSpeed: ParseSpeeds.Fastest,
+    });
+
+    const pages = pdfDoc.getPages();
+
+    pages.forEach(page => {
+        // Change page size
+        page.setRotation(degrees(rotation))
+    });
+
+    // Serialize the modified document
+    return pdfDoc.save();
+};