fix(build): align TypeScript and test imports with NodeNext builds and safely copy Uint8Array inputs in browser processing

ts_web/pdfprocessor.ts

@@ -146,7 +146,7 @@ export class WebPdfProcessor implements IWebPdfProcessor {
     }
     
     if (input instanceof Uint8Array) {
-      return input.buffer.slice(input.byteOffset, input.byteOffset + input.byteLength);
+      return this.uint8ArrayToArrayBuffer(input);
     }
     
     if (input instanceof File || input instanceof Blob) {
@@ -420,4 +420,10 @@ export class WebPdfProcessor implements IWebPdfProcessor {
       reader.readAsDataURL(blob);
     });
   }
-}
+
+  private uint8ArrayToArrayBuffer(input: Uint8Array): ArrayBuffer {
+    const arrayBuffer = new ArrayBuffer(input.byteLength);
+    new Uint8Array(arrayBuffer).set(input);
+    return arrayBuffer;
+  }
+}