feat: open multi-part packages in browser

src/worker/onenote.worker.ts

@@ -3,6 +3,7 @@ import type { OneNoteResource } from '../onenote/one/content-model.js';
 import {
   failureFromUnknown,
   openPackageForWorker,
+  openPackageSetForWorker,
   openSectionForWorker,
   resourcePayload,
   workerPageKey,
@@ -59,10 +60,25 @@ async function handleRequest(data: WorkerRequest): Promise<void> {
     }
     case 'parse-onepkg':
       try {
-        const parsed = await openPackageForWorker(
-          new Uint8Array(data.bytes),
-          data.fileName
-        );
+        const parsed =
+          data.cabinetParts && data.cabinetParts.length > 0
+            ? await openPackageSetForWorker(
+                [
+                  {
+                    fileName: data.fileName,
+                    bytes: new Uint8Array(data.bytes),
+                  },
+                  ...data.cabinetParts.map((part) => ({
+                    fileName: part.fileName,
+                    bytes: new Uint8Array(part.bytes),
+                  })),
+                ],
+                data.fileName
+              )
+            : await openPackageForWorker(
+                new Uint8Array(data.bytes),
+                data.fileName
+              );
         const sessionId = createSession(parsed.pages, parsed.resources);
         workerScope.postMessage({
           type: 'package',