Migrating shared-operations to TS (WIP)

shared-operations/functions/mergePDFs.ts

@@ -0,0 +1,16 @@
+
+import { PDFDocument } from 'pdf-lib';
+
+export async function mergePDFs(snapshots: (string | Uint8Array | ArrayBuffer)[]): Promise<Uint8Array> {
+
+    const mergedPdf = await PDFDocument.create(); 
+
+    for (let i = 0; i < snapshots.length; i++) {
+        const pdfToMerge = await PDFDocument.load(snapshots[i]);
+
+        const copiedPages = await mergedPdf.copyPages(pdfToMerge, pdfToMerge.getPageIndices());
+        copiedPages.forEach((page) => mergedPdf.addPage(page));
+    }
+
+    return mergedPdf.save();
+};