fix(core): update

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartstream',
-  version: '3.0.13',
+  version: '3.0.14',
   description: 'simplifies access to node streams'
 }

ts/smartstream.classes.smartduplex.ts

@@ -15,6 +15,7 @@ export interface IStreamFinalFunction<rT> {
 }
 
 export interface SmartStreamOptions<TInput, TOutput> extends DuplexOptions {
+  handleBackpressure?: boolean;
   readFunction?: () => Promise<void>;
   writeFunction?: IStreamWriteFunction<TInput, TOutput>;
   finalFunction?: IStreamFinalFunction<TOutput>;
@@ -109,6 +110,7 @@ export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
 
   // INSTANCE
   private readFunction?: () => Promise<void>;
+  private handleBackpressure: boolean;
   private writeFunction?: IStreamWriteFunction<TInput, TOutput>;
   private finalFunction?: IStreamFinalFunction<TOutput>;
   private observableSubscription?: plugins.smartrx.rxjs.Subscription;
@@ -118,6 +120,7 @@ export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
     this.readFunction = optionsArg?.readFunction;
     this.writeFunction = optionsArg?.writeFunction;
     this.finalFunction = optionsArg?.finalFunction;
+    this.handleBackpressure = optionsArg?.handleBackpressure ?? true;
   }
 
   public async _read(size: number): Promise<void> {
@@ -143,8 +146,12 @@ export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
     try {
       const modifiedChunk = await this.writeFunction(chunk, tools);
       if (modifiedChunk) {
-        if (!this.push(modifiedChunk)) {
-          // Handle backpressure if necessary
+        if (!this.push(modifiedChunk) && this.handleBackpressure) {
+          this.pause();
+          // Listen for 'drain' event to resume
+          this.once('drain', () => {
+            this.resume(); // Resume the source of data
+          });
         }
       }
       callback();