Fix on Writer

lib/dat/writer.ts

@@ -181,6 +181,10 @@ export class DataWriter<T> {
         this.indexWriter.writeFlags(flags);
     }
 
+    getFlags(): number {
+        return this.indexWriter.getFlags();
+    }
+
     getStats() {
         return {
             dataPath: this.dataPath,

lib/idx/writer.ts

@@ -161,6 +161,11 @@ export class IndexWriter {
         return this.latestSequence;
     }
 
+    getFlags(): number {
+        if (!this.headerBuf) throw new Error('Index file not opened');
+        return this.headerBuf.readUInt32LE(41);
+    }
+
     writeHeader(): void {
         if (!this.headerBuf || this.fd === null) return;