From d161d6613a018380f83bdcfdf17dcb5f84b1b873 Mon Sep 17 00:00:00 2001
From: Philipp Kunz <gitlab@philkunz.com>
Date: Sat, 11 Nov 2023 20:56:46 +0100
Subject: [PATCH] fix(core): update

---
 test/test.streamfunction.ts           |  2 +-
 ts/00_commitinfo_data.ts              |  2 +-
 ts/smartstream.classes.smartduplex.ts | 15 +++++++++++++--
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/test/test.streamfunction.ts b/test/test.streamfunction.ts
index b1ae09f..eb781d0 100644
--- a/test/test.streamfunction.ts
+++ b/test/test.streamfunction.ts
@@ -29,7 +29,7 @@ tap.test('should handle a read stream', async (tools) => {
       },
     })
   ]);
-  // await streamWrapper.run();
+  await streamWrapper.run();
 });
 
 tap.test('should create a valid Intake', async (tools) => {
diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 8fcbe73..9b2f99a 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartstream',
-  version: '3.0.17',
+  version: '3.0.18',
   description: 'simplifies access to node streams'
 }
diff --git a/ts/smartstream.classes.smartduplex.ts b/ts/smartstream.classes.smartduplex.ts
index cbfa6a5..858a45d 100644
--- a/ts/smartstream.classes.smartduplex.ts
+++ b/ts/smartstream.classes.smartduplex.ts
@@ -130,6 +130,9 @@ export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
   }
 
   public notBackpressured = true;
+  public get backpressured(): boolean {
+    return !this.notBackpressured;
+  }
   public push(chunkArg?: TOutput | null): boolean {
     const result = super.push(chunkArg);
     if (!result && this.handleBackpressure) {
@@ -161,9 +164,17 @@ export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
     try {
       const modifiedChunk = await this.writeFunction(chunk, tools);
       if (modifiedChunk) {
-        this.push(modifiedChunk);
+        this.push(modifiedChunk)
+        if (this.backpressured && this.handleBackpressure) {
+          this.once('drain', () => {
+            callback();
+          });
+        } else {
+          callback();
+        }      
+      } else {
+        callback();
       }
-      callback();
     } catch (err) {
       callback(err);
     }