diff --git a/package.json b/package.json
index 0b410b1..fdbad06 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "@push.rocks/smartpromise": "^4.0.3",
     "@push.rocks/smartrequest": "^2.0.20",
     "@push.rocks/smartrx": "^3.0.7",
-    "@push.rocks/smartstream": "^3.0.7",
+    "@push.rocks/smartstream": "^3.0.11",
     "@push.rocks/smartunique": "^3.0.6",
     "@push.rocks/smarturl": "^3.0.7",
     "@types/tar-stream": "^3.1.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4dcd6e6..aecb422 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -21,8 +21,8 @@ dependencies:
     specifier: ^3.0.7
     version: 3.0.7
   '@push.rocks/smartstream':
-    specifier: ^3.0.7
-    version: 3.0.7
+    specifier: ^3.0.11
+    version: 3.0.11
   '@push.rocks/smartunique':
     specifier: ^3.0.6
     version: 3.0.6
@@ -717,7 +717,7 @@ packages:
       '@push.rocks/smartpath': 5.0.11
       '@push.rocks/smartpromise': 4.0.3
       '@push.rocks/smartrequest': 2.0.20
-      '@push.rocks/smartstream': 3.0.7
+      '@push.rocks/smartstream': 3.0.11
       '@types/fs-extra': 11.0.3
       '@types/glob': 8.1.0
       '@types/js-yaml': 4.0.8
@@ -934,8 +934,8 @@ packages:
       through2: 4.0.2
     dev: true
 
-  /@push.rocks/smartstream@3.0.7:
-    resolution: {integrity: sha512-F4HsYlMJusa7uf18aIXGuuAdlPxKaIcr7UDMLg4QUCtGK114SVt6E+72bXtN6yPyZ40+x8BVUWUkkTOdw22BeA==}
+  /@push.rocks/smartstream@3.0.11:
+    resolution: {integrity: sha512-MrJGCXcUYliAZlE/ozGzCj6Udtg/2f4OfJCd/7We8tK2kS+YWl+TSvubz8KFbUqcl5dqHQro0txrmVcthd9gEQ==}
     dependencies:
       '@push.rocks/smartpromise': 4.0.3
       '@push.rocks/smartrx': 3.0.7
diff --git a/test/test.ts b/test/test.ts
index 52335b4..29d7c1e 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -35,7 +35,16 @@ tap.test('should extract existing files on disk', async () => {
   const testSmartarchive = await smartarchive.SmartArchive.fromArchiveUrl(
     'https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz'
   );
-  const streamfileStream = await testSmartarchive.exportToFs(testPaths.nogitDir);
+  await testSmartarchive.exportToFs(testPaths.nogitDir);
 });
 
+tap.test('should extract a b2zip', async () => {
+  const dataUrl = 'https://daten.offeneregister.de/de_companies_ocdata.jsonl.bz2';
+  const testArchive = await smartarchive.SmartArchive.fromArchiveUrl(dataUrl);
+    await testArchive.exportToFs(
+      plugins.path.join(testPaths.nogitDir, 'de_companies_ocdata.jsonl'),
+      'data.jsonl',
+    );
+})
+
 tap.start();
diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 14c22e2..7b7089e 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartarchive',
-  version: '4.0.2',
+  version: '4.0.3',
   description: 'work with archives'
 }
diff --git a/ts/classes.archiveanalyzer.ts b/ts/classes.archiveanalyzer.ts
index 71cba63..31e88ca 100644
--- a/ts/classes.archiveanalyzer.ts
+++ b/ts/classes.archiveanalyzer.ts
@@ -53,13 +53,13 @@ export class ArchiveAnalyzer {
       readableObjectMode: true,
       writeAndTransformFunction: async (chunkArg: Buffer, streamtools) => {
         const fileType = await plugins.fileType.fileTypeFromBuffer(chunkArg);
-        const decompressionStream = this.getDecompressionStream(fileType.mime as any);
+        const decompressionStream = this.getDecompressionStream(fileType?.mime as any);
         resultStream.push(chunkArg);
         if (firstRun) {
           firstRun = false;
           const result: IAnalyzedResult = {
             fileType,
-            isArchive: await this.mimeTypeIsArchive(fileType.mime),
+            isArchive: await this.mimeTypeIsArchive(fileType?.mime),
             resultStream,
             decompressionStream,
           };
@@ -68,6 +68,10 @@ export class ArchiveAnalyzer {
           return null;
         }
       },
+      finalFunction: async (tools) => {
+        resultStream.push(null);
+        return null;
+      }
     });
     return analyzerstream;
   }
diff --git a/ts/classes.smartarchive.ts b/ts/classes.smartarchive.ts
index f702112..adb6caf 100644
--- a/ts/classes.smartarchive.ts
+++ b/ts/classes.smartarchive.ts
@@ -74,7 +74,7 @@ export class SmartArchive {
     // return archiveStream;
   }
 
-  public async exportToFs(targetDir: string): Promise<void> {
+  public async exportToFs(targetDir: string, fileNameArg?: string): Promise<void> {
     const done = plugins.smartpromise.defer<void>();
     const streamFileStream = await this.exportToStreamOfStreamFiles();
     streamFileStream.pipe(new plugins.smartstream.SmartDuplex({
@@ -83,14 +83,15 @@ export class SmartArchive {
         console.log(chunkArg.relativeFilePath);
         const streamFile = chunkArg;
         const readStream = await streamFile.createReadStream();
-        const writePath = plugins.path.join(targetDir + streamFile.relativeFilePath);
-        const dir = plugins.path.parse(writePath).dir;
-        await plugins.smartfile.fs.ensureDir(plugins.path.dirname(dir));
+        await plugins.smartfile.fs.ensureDir(targetDir);
+        const writePath = plugins.path.join(targetDir, (streamFile.relativeFilePath || fileNameArg));
+        await plugins.smartfile.fs.ensureDir(plugins.path.dirname(writePath));
         const writeStream = plugins.smartfile.fsStream.createWriteStream(writePath);
-        readStream.pipe(writeStream).end(() => {
-          done.resolve();
-        });
+        readStream.pipe(writeStream);
       },
+      finalFunction: async () => {
+        done.resolve();
+      }
     }));
     return done.promise;
   }
@@ -106,7 +107,7 @@ export class SmartArchive {
     const createUnpackStream = () =>
       plugins.smartstream.createTransformFunction<IAnalyzedResult, any>(
         async (analyzedResultChunk) => {
-          if (analyzedResultChunk.fileType.mime === 'application/x-tar') {
+          if (analyzedResultChunk.fileType?.mime === 'application/x-tar') {
             const tarStream = analyzedResultChunk.decompressionStream as plugins.tarStream.Extract;
             tarStream.on(
               'entry',
@@ -116,11 +117,13 @@ export class SmartArchive {
                 stream.on('end', function () {
                   next(); // ready for next entry
                 });
+                stream.resume(); // just auto drain the stream
               }
             );
             tarStream.on('finish', function () {
+              console.log('finished');
               streamFileIntake.signalEnd();
-            })
+            });
             analyzedResultChunk.resultStream.pipe(analyzedResultChunk.decompressionStream);
           } else if (analyzedResultChunk.isArchive && analyzedResultChunk.decompressionStream) {
             analyzedResultChunk.resultStream
@@ -130,11 +133,11 @@ export class SmartArchive {
           } else {
             const streamFile = plugins.smartfile.StreamFile.fromStream(
               analyzedResultChunk.resultStream,
-              analyzedResultChunk.fileType.ext
+              analyzedResultChunk.fileType?.ext
             );
             streamFileIntake.push(streamFile);
           }
-        }
+        },
       );
 
     archiveStream.pipe(createAnalyzedStream()).pipe(createUnpackStream());