3.0.3

.gitea/workflows/default_nottags.yaml

@@ -0,0 +1,66 @@
+name: Default (not tags)
+
+on:
+  push:
+    tags-ignore:
+      - '**'
+
+env:
+  IMAGE: registry.gitlab.com/hosttoday/ht-docker-node:npmci
+  NPMCI_COMPUTED_REPOURL: https://${{gitea.repository_owner}}:${{secrets.GITEA_TOKEN}}@gitea.lossless.digital/${{gitea.repository}}.git
+  NPMCI_TOKEN_NPM: ${{secrets.NPMCI_TOKEN_NPM}}
+  NPMCI_TOKEN_NPM2: ${{secrets.NPMCI_TOKEN_NPM2}}
+  NPMCI_GIT_GITHUBTOKEN: ${{secrets.NPMCI_GIT_GITHUBTOKEN}}
+  NPMCI_URL_CLOUDLY: ${{secrets.NPMCI_URL_CLOUDLY}}
+
+jobs:
+  security:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    container:
+      image: ${{ env.IMAGE }}
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install pnpm and npmci
+        run: |
+          pnpm install -g pnpm
+          pnpm install -g @shipzone/npmci
+
+      - name: Run npm prepare
+        run: npmci npm prepare
+
+      - name: Audit production dependencies
+        run: |
+          npmci command npm config set registry https://registry.npmjs.org
+          npmci command pnpm audit --audit-level=high --prod
+        continue-on-error: true
+
+      - name: Audit development dependencies
+        run: |
+          npmci command npm config set registry https://registry.npmjs.org
+          npmci command pnpm audit --audit-level=high --dev
+        continue-on-error: true
+
+  test:
+    if: ${{ always() }}
+    needs: security
+    runs-on: ubuntu-latest
+    container:
+      image: ${{ env.IMAGE }}
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Test stable
+        run: |
+          npmci node install stable
+          npmci npm install
+          npmci npm test
+
+      - name: Test build
+        run: |
+          npmci node install stable
+          npmci npm install
+          npmci npm build

.gitea/workflows/default_tags.yaml

@@ -0,0 +1,124 @@
+name: Default (tags)
+
+on:
+  push:
+    tags:
+      - '*'
+
+env:
+  IMAGE: registry.gitlab.com/hosttoday/ht-docker-node:npmci
+  NPMCI_COMPUTED_REPOURL: https://${{gitea.repository_owner}}:${{secrets.GITEA_TOKEN}}@gitea.lossless.digital/${{gitea.repository}}.git
+  NPMCI_TOKEN_NPM: ${{secrets.NPMCI_TOKEN_NPM}}
+  NPMCI_TOKEN_NPM2: ${{secrets.NPMCI_TOKEN_NPM2}}
+  NPMCI_GIT_GITHUBTOKEN: ${{secrets.NPMCI_GIT_GITHUBTOKEN}}
+  NPMCI_URL_CLOUDLY: ${{secrets.NPMCI_URL_CLOUDLY}}
+
+jobs:
+  security:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    container:
+      image: ${{ env.IMAGE }}
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Prepare
+        run: |
+          pnpm install -g pnpm
+          pnpm install -g @shipzone/npmci
+          npmci npm prepare
+
+      - name: Audit production dependencies
+        run: |
+          npmci command npm config set registry https://registry.npmjs.org
+          npmci command pnpm audit --audit-level=high --prod
+        continue-on-error: true
+
+      - name: Audit development dependencies
+        run: |
+          npmci command npm config set registry https://registry.npmjs.org
+          npmci command pnpm audit --audit-level=high --dev
+        continue-on-error: true
+
+  test:
+    if: ${{ always() }}
+    needs: security
+    runs-on: ubuntu-latest
+    container:
+      image: ${{ env.IMAGE }}
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Prepare
+        run: |
+          pnpm install -g pnpm
+          pnpm install -g @shipzone/npmci
+          npmci npm prepare
+
+      - name: Test stable
+        run: |
+          npmci node install stable
+          npmci npm install
+          npmci npm test
+
+      - name: Test build
+        run: |
+          npmci node install stable
+          npmci npm install
+          npmci npm build
+
+  release:
+    needs: test
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    container:
+      image: ${{ env.IMAGE }}
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Prepare
+        run: |
+          pnpm install -g pnpm
+          pnpm install -g @shipzone/npmci
+          npmci npm prepare
+
+      - name: Release
+        run: |
+          npmci node install stable
+          npmci npm publish
+
+  metadata:
+    needs: test
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    container:
+      image: ${{ env.IMAGE }}
+    continue-on-error: true
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Prepare
+        run: |
+          pnpm install -g pnpm
+          pnpm install -g @shipzone/npmci
+          npmci npm prepare
+
+      - name: Code quality
+        run: |
+          npmci command npm install -g typescript
+          npmci npm install
+
+      - name: Trigger
+        run: npmci trigger
+
+      - name: Build docs and upload artifacts
+        run: |
+          npmci node install stable
+          npmci npm install
+          pnpm install -g @git.zone/tsdoc
+          npmci command tsdoc
+        continue-on-error: true

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@push.rocks/smartstream",
-  "version": "2.0.7",
+  "version": "3.0.3",
   "private": false,
   "description": "simplifies access to node streams",
   "main": "dist_ts/index.js",
@@ -8,18 +8,19 @@
   "type": "module",
   "scripts": {
     "test": "(tstest test/)",
-    "build": "(tsbuild)"
+    "build": "(tsbuild)",
+    "buildDocs": "tsdoc"
   },
   "repository": {
     "type": "git",
-    "url": "git+ssh://git@gitlab.com/pushrocks/smartstream.git"
+    "url": "git+https://gitlab.com/push.rocks/smartstream.git"
   },
   "author": "Lossless GmbH",
   "license": "MIT",
   "bugs": {
-    "url": "https://gitlab.com/pushrocks/smartstream/issues"
+    "url": "https://gitlab.com/push.rocks/smartstream/issues"
   },
-  "homepage": "https://gitlab.com/pushrocks/smartstream#README",
+  "homepage": "https://gitlab.com/push.rocks/smartstream#readme",
   "devDependencies": {
     "@git.zone/tsbuild": "^2.1.66",
     "@git.zone/tsrun": "^1.2.44",
@@ -29,11 +30,7 @@
   },
   "dependencies": {
     "@push.rocks/smartpromise": "^4.0.3",
-    "@push.rocks/smartrx": "^3.0.7",
+    "@push.rocks/smartrx": "^3.0.7"
-    "@types/from2": "^2.3.4",
-    "@types/through2": "^2.0.40",
-    "from2": "^2.3.0",
-    "through2": "^4.0.2"
   },
   "browserslist": [
     "last 1 chrome versions"

pnpm-lock.yaml

@@ -11,18 +11,6 @@ dependencies:
   '@push.rocks/smartrx':
     specifier: ^3.0.7
     version: 3.0.7
-  '@types/from2':
-    specifier: ^2.3.4
-    version: 2.3.4
-  '@types/through2':
-    specifier: ^2.0.40
-    version: 2.0.40
-  from2:
-    specifier: ^2.3.0
-    version: 2.3.0
-  through2:
-    specifier: ^4.0.2
-    version: 4.0.2
 
 devDependencies:
   '@git.zone/tsbuild':
@@ -1448,6 +1436,7 @@ packages:
     resolution: {integrity: sha512-Ofj/U9ytMjG5FIfFlTokSyGQdLgX8js+hbw9/qxZQbsGRjcjQPzoLGZhe6OEzrg7Sd98Il57iyxDtU1ArvCSTw==}
     dependencies:
       '@types/node': 20.8.10
+    dev: true
 
   /@types/fs-extra@11.0.3:
     resolution: {integrity: sha512-sF59BlXtUdzEAL1u0MSvuzWd7PdZvZEtnaVkzX5mjpdWTJ8brG0jUqve3jPCzSzvAKKMHTG8F8o/WMQLtleZdQ==}
@@ -1568,6 +1557,7 @@ packages:
     resolution: {integrity: sha512-TlgT8JntpcbmKUFzjhsyhGfP2fsiz1Mv56im6enJ905xG1DAYesxJaeSbGqQmAw8OWPdhyJGhGSQGKRNJ45u9w==}
     dependencies:
       undici-types: 5.26.5
+    dev: true
 
   /@types/parse5@6.0.3:
     resolution: {integrity: sha512-SuT16Q1K51EAVPz1K29DJ/sXjhSQ0zjvsypYJ6tlwVsRV9jwW5Adq2ch8Dq8kDBCkYnELS7N7VNCSB5nC56t/g==}
@@ -1637,6 +1627,7 @@ packages:
     resolution: {integrity: sha512-QeEwyeGxvtKjP0I/SR8pHtKMgmqotWTI8V/rNMTjbF3arWZJV/kYtbZXtwQKxUuV/oPSGkUilSspFKkTgCPTpA==}
     dependencies:
       '@types/node': 20.8.10
+    dev: true
 
   /@types/trusted-types@2.0.5:
     resolution: {integrity: sha512-I3pkr8j/6tmQtKV/ZzHtuaqYSQvyjGRKH4go60Rr0IDLlFxuRT5V32uvB1mecM5G1EVAUyF/4r4QZ1GHgz+mxA==}
@@ -2331,6 +2322,7 @@ packages:
 
   /core-util-is@1.0.3:
     resolution: {integrity: sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ==}
+    dev: true
 
   /cors@2.8.5:
     resolution: {integrity: sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==}
@@ -2999,6 +2991,7 @@ packages:
     dependencies:
       inherits: 2.0.4
       readable-stream: 2.3.8
+    dev: true
 
   /fs-constants@1.0.0:
     resolution: {integrity: sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==}
@@ -3377,6 +3370,7 @@ packages:
 
   /inherits@2.0.4:
     resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
+    dev: true
 
   /internal-slot@1.0.6:
     resolution: {integrity: sha512-Xj6dv+PsbtwyPpEflsejS+oIZxmMlV44zAhG479uYu89MsjcYOhCFnNyKrkJrihbsiasQyY0afoCl/9BLR65bg==}
@@ -3593,6 +3587,7 @@ packages:
 
   /isarray@1.0.0:
     resolution: {integrity: sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=}
+    dev: true
 
   /isarray@2.0.5:
     resolution: {integrity: sha512-xHjhDr3cNBK0BzdUJSPXZntQUx/mwMS5Rw4A7lPJ90XGAO6ISP/ePDNuo0vhqOZU+UD5JoodwCAAoZQd3FeAKw==}
@@ -4491,6 +4486,7 @@ packages:
 
   /process-nextick-args@2.0.1:
     resolution: {integrity: sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==}
+    dev: true
 
   /progress@2.0.3:
     resolution: {integrity: sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==}
@@ -4626,6 +4622,7 @@ packages:
       safe-buffer: 5.1.2
       string_decoder: 1.1.1
       util-deprecate: 1.0.2
+    dev: true
 
   /readable-stream@3.6.2:
     resolution: {integrity: sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==}
@@ -4634,6 +4631,7 @@ packages:
       inherits: 2.0.4
       string_decoder: 1.3.0
       util-deprecate: 1.0.2
+    dev: true
 
   /readdirp@3.6.0:
     resolution: {integrity: sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==}
@@ -4747,9 +4745,11 @@ packages:
 
   /safe-buffer@5.1.2:
     resolution: {integrity: sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==}
+    dev: true
 
   /safe-buffer@5.2.1:
     resolution: {integrity: sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==}
+    dev: true
 
   /safe-regex-test@1.0.0:
     resolution: {integrity: sha512-JBUUzyOgEwXQY1NuPtvcj/qcBDbDmEvWufhlnXZIm75DEHp+afM1r1ujJpJsV/gSM4t59tpDyPi1sd6ZaPFfsA==}
@@ -5073,11 +5073,13 @@ packages:
     resolution: {integrity: sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==}
     dependencies:
       safe-buffer: 5.1.2
+    dev: true
 
   /string_decoder@1.3.0:
     resolution: {integrity: sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==}
     dependencies:
       safe-buffer: 5.2.1
+    dev: true
 
   /strip-ansi@4.0.0:
     resolution: {integrity: sha1-qEeQIusaw2iocTibY1JixQXuNo8=}
@@ -5192,6 +5194,7 @@ packages:
     resolution: {integrity: sha512-iOqSav00cVxEEICeD7TjLB1sueEL+81Wpzp2bY17uZjZN0pWZPuo4suZ/61VujxmqSGFfgOcNuTZ85QJwNZQpw==}
     dependencies:
       readable-stream: 3.6.2
+    dev: true
 
   /through@2.3.8:
     resolution: {integrity: sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=}
@@ -5390,6 +5393,7 @@ packages:
 
   /undici-types@5.26.5:
     resolution: {integrity: sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==}
+    dev: true
 
   /unicode-trie@0.3.1:
     resolution: {integrity: sha1-1nHd3YkQGgi6w3tqUWEBBgIFIIU=}
@@ -5426,6 +5430,7 @@ packages:
 
   /util-deprecate@1.0.2:
     resolution: {integrity: sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=}
+    dev: true
 
   /utils-merge@1.0.1:
     resolution: {integrity: sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=}

test/assets/writabletext.txt

@@ -48,4 +48,3 @@ hi+wow
 hi+wow
 hi+wow
 hi+wow
-noice

test/test.smartstream.ts

@@ -1,11 +1,11 @@
 import { expect, tap } from '@push.rocks/tapbundle';
-import { SmartStream } from '../ts/smartstream.classes.smartstream.js'; // Adjust the import to your file structure
+import { SmartDuplex } from '../ts/smartstream.classes.smartduplex.js'; // Adjust the import to your file structure
 import * as smartrx from '@push.rocks/smartrx';
 import * as fs from 'fs';
 
 tap.test('should create a SmartStream from a Buffer', async () => {
   const bufferData = Buffer.from('This is a test buffer');
-  const smartStream = SmartStream.fromBuffer(bufferData);
+  const smartStream = SmartDuplex.fromBuffer(bufferData);
   
   let receivedData = Buffer.alloc(0);
   
@@ -25,7 +25,7 @@ tap.test('should create a SmartStream from an Observable', async () => {
   const observableData = 'Observable test data';
   const testObservable = smartrx.rxjs.of(Buffer.from(observableData));
   
-  const smartStream = SmartStream.fromObservable(testObservable);
+  const smartStream = SmartDuplex.fromObservable(testObservable);
   
   let receivedData = Buffer.alloc(0);
 

test/test.streamfunction.ts

@@ -7,45 +7,42 @@ let testIntake: smartstream.StreamIntake<string>;
 
 tap.test('should handle a read stream', async (tools) => {
   const counter = 0;
-  const testSmartstream = new smartstream.StreamWrapper([
+  const streamWrapper = new smartstream.StreamWrapper([
     smartfile.fsStream.createReadStream('./test/assets/readabletext.txt'),
-    smartstream.createDuplexStream<Buffer, Buffer>(
+    new smartstream.SmartDuplex({
-      async (chunkStringArg: Buffer, streamTools) => {
+      writeAndTransformFunction: async (chunkStringArg: Buffer, streamTools) => {
         // do something with the stream here
         const result = chunkStringArg.toString().substr(0, 100);
-        streamTools.pipeMore('wow =========== \n');
+        streamTools.push('wow =========== \n');
         return Buffer.from(result);
       },
-      async (tools) => {
+      streamEndFunction: async (tools) => {
-        // tools.pipeMore('hey, this is the end')
         return Buffer.from('this is the end');
       },
-      { objectMode: false }
-    ),
-    smartstream.createDuplexStream<Buffer, string>(async (chunkStringArg) => {
-      console.log(chunkStringArg.toString());
-      return null;
     }),
-    smartstream.cleanPipe(),
+    new smartstream.SmartDuplex({
+      writeAndTransformFunction: async (chunkStringArg) => {
+        console.log(chunkStringArg.toString());
+      },
+      streamEndFunction: async (tools) => {
+        tools.push(null);
+      },
+    })
   ]);
-  await testSmartstream.run();
+  // await streamWrapper.run();
 });
 
 tap.test('should create a valid Intake', async (tools) => {
   testIntake = new smartstream.StreamIntake<string>();
-  testIntake
+  testIntake.pipe(
-    .getReadable()
+      new smartstream.SmartDuplex({
-    .pipe(
+        objectMode: true,
-      smartstream.createDuplexStream<string, string>(
+        writeAndTransformFunction: async (chunkStringArg: string, streamTools) => {
-        async (chunkString) => {
           await tools.delayFor(100);
-          console.log(chunkString);
+          console.log(chunkStringArg);
-          return chunkString;
+          return chunkStringArg;
-        },
-        async () => {
-          return 'noice';
         }
-      )
+      })
     )
     .pipe(smartfile.fsStream.createWriteStream('./test/assets/writabletext.txt'));
   const testFinished = tools.defer();

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartstream',
-  version: '2.0.7',
+  version: '3.0.3',
   description: 'simplifies access to node streams'
 }

ts/index.ts

@@ -1,4 +1,4 @@
-export * from './smartstream.classes.smartstream.js';
+export * from './smartstream.classes.passthrough.js';
+export * from './smartstream.classes.smartduplex.js';
 export * from './smartstream.classes.streamwrapper.js';
 export * from './smartstream.classes.streamintake.js';
-export * from './smartstream.duplex.js';

ts/smartstream.classes.passthrough.ts

@@ -0,0 +1,19 @@
+import * as plugins from './smartstream.plugins.js';
+
+export class PassThrough extends plugins.stream.Duplex {
+  constructor(options?: plugins.stream.DuplexOptions) {
+    super(options);
+  }
+
+  _read(size: number): void {
+    // No-op: Data written will be automatically available for reading.
+  }
+
+  _write(chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void {
+    if (this.push(chunk, encoding)) {
+      callback();
+    } else {
+      this.once('drain', callback);
+    }
+  }
+}

ts/smartstream.classes.smartduplex.ts

@@ -0,0 +1,177 @@
+import * as plugins from './smartstream.plugins.js';
+import { Duplex, type DuplexOptions } from 'stream';
+
+export interface IStreamTools {
+  truncate: () => void;
+  push: (pipeObject: any) => void;
+}
+
+export interface IWriteAndTransformFunction<T, rT> {
+  (chunkArg: T, toolsArg: IStreamTools): Promise<rT>;
+}
+
+export interface IStreamEndFunction<rT> {
+  (toolsArg: IStreamTools): Promise<rT>;
+}
+
+export interface SmartStreamOptions<TInput, TOutput> extends DuplexOptions {
+  readFunction?: () => Promise<void>;
+  writeAndTransformFunction?: IWriteAndTransformFunction<TInput, TOutput>;
+  streamEndFunction?: IStreamEndFunction<TOutput>;
+  // Add other custom options if necessary
+}
+
+export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
+  // STATIC
+  static fromBuffer(buffer: Buffer, options?: DuplexOptions): SmartDuplex {
+    const smartStream = new SmartDuplex(options);
+    process.nextTick(() => {
+      smartStream.push(buffer);
+      smartStream.push(null); // Signal the end of the data
+    });
+    return smartStream;
+  }
+
+  static fromObservable(
+    observable: plugins.smartrx.rxjs.Observable<any>,
+    options?: DuplexOptions
+  ): SmartDuplex {
+    const smartStream = new SmartDuplex(options);
+    smartStream.observableSubscription = observable.subscribe({
+      next: (data) => {
+        if (!smartStream.push(data)) {
+          // Pause the observable if the stream buffer is full
+          smartStream.observableSubscription?.unsubscribe();
+          smartStream.once('drain', () => {
+            // Resume the observable when the stream buffer is drained
+            smartStream.observableSubscription?.unsubscribe();
+            smartStream.observableSubscription = observable.subscribe((data) => {
+              smartStream.push(data);
+            });
+          });
+        }
+      },
+      error: (err) => {
+        smartStream.emit('error', err);
+      },
+      complete: () => {
+        smartStream.push(null); // Signal the end of the data
+      },
+    });
+
+    return smartStream;
+  }
+
+  static fromReplaySubject(
+    replaySubject: plugins.smartrx.rxjs.ReplaySubject<any>,
+    options?: DuplexOptions
+  ): SmartDuplex {
+    const smartStream = new SmartDuplex(options);
+    let isBackpressured = false;
+
+    // Subscribe to the ReplaySubject
+    const subscription = replaySubject.subscribe({
+      next: (data) => {
+        const canPush = smartStream.push(data);
+        if (!canPush) {
+          // If push returns false, pause the subscription because of backpressure
+          isBackpressured = true;
+          subscription.unsubscribe();
+        }
+      },
+      error: (err) => {
+        smartStream.emit('error', err);
+      },
+      complete: () => {
+        smartStream.push(null); // End the stream when the ReplaySubject completes
+      },
+    });
+
+    // Listen for 'drain' event to resume the subscription if it was paused
+    smartStream.on('drain', () => {
+      if (isBackpressured) {
+        isBackpressured = false;
+        // Resubscribe to the ReplaySubject since we previously paused
+        smartStream.observableSubscription = replaySubject.subscribe({
+          next: (data) => {
+            if (!smartStream.push(data)) {
+              smartStream.observableSubscription?.unsubscribe();
+              isBackpressured = true;
+            }
+          },
+          // No need to repeat error and complete handling here because it's already set up above
+        });
+      }
+    });
+
+    return smartStream;
+  }
+
+  // INSTANCE
+  private readFunction?: () => Promise<void>;
+  private writeAndTransformFunction?: IWriteAndTransformFunction<TInput, TOutput>;
+  private streamEndFunction?: IStreamEndFunction<TOutput>;
+  private observableSubscription?: plugins.smartrx.rxjs.Subscription;
+
+  constructor(optionsArg?: SmartStreamOptions<TInput, TOutput>) {
+    super(optionsArg);
+    this.readFunction = optionsArg?.readFunction;
+    this.writeAndTransformFunction = optionsArg?.writeAndTransformFunction;
+    this.streamEndFunction = optionsArg?.streamEndFunction;
+  }
+
+  public async _read(size: number): Promise<void> {
+    if (this.readFunction) {
+      await this.readFunction();
+    }
+  }
+
+  // Ensure the _write method types the chunk as TInput and encodes TOutput
+  public async _write(chunk: TInput, encoding: string, callback: (error?: Error | null) => void) {
+    if (!this.writeAndTransformFunction) {
+      return callback(new Error('No stream function provided'));
+    }
+
+    const tools: IStreamTools = {
+      truncate: () => {
+        this.push(null);
+        callback();
+      },
+      push: (pushArg: TOutput) => this.push(pushArg),
+    };
+
+    try {
+      const modifiedChunk = await this.writeAndTransformFunction(chunk, tools);
+      if (modifiedChunk) {
+        if (!this.push(modifiedChunk)) {
+          // Handle backpressure if necessary
+        }
+      }
+      callback();
+    } catch (err) {
+      callback(err);
+    }
+  }
+
+  public async _final(callback: (error?: Error | null) => void) {
+    if (this.streamEndFunction) {
+      const tools: IStreamTools = {
+        truncate: () => callback(),
+        push: (pipeObject) => this.push(pipeObject),
+      };
+
+      try {
+        const finalChunk = await this.streamEndFunction(tools);
+        if (finalChunk) {
+          this.push(finalChunk);
+        }
+        callback();
+      } catch (err) {
+        callback(err);
+      }
+    } else {
+      this.push(null),
+      callback();
+    }
+  }
+}

ts/smartstream.classes.smartstream.ts

@@ -1,55 +0,0 @@
-import * as plugins from './smartstream.plugins.js';
-import { Duplex, type DuplexOptions } from 'stream';
-
-export class SmartStream extends Duplex {
-  private observableSubscription?: plugins.smartrx.rxjs.Subscription;
-
-  constructor(options?: DuplexOptions) {
-    super(options);
-  }
-
-  _read(size: number) {
-    // Implement if you need custom behavior, otherwise leave it empty
-  }
-
-  _write(chunk: any, encoding: string, callback: (error?: Error | null) => void) {
-    // Implement if you need custom behavior
-    callback();
-  }
-
-  static fromBuffer(buffer: Buffer, options?: DuplexOptions): SmartStream {
-    const smartStream = new SmartStream(options);
-    process.nextTick(() => {
-      smartStream.push(buffer);
-      smartStream.push(null); // Signal the end of the data
-    });
-    return smartStream;
-  }
-
-  static fromObservable(observable: plugins.smartrx.rxjs.Observable<any>, options?: DuplexOptions): SmartStream {
-    const smartStream = new SmartStream(options);
-    smartStream.observableSubscription = observable.subscribe({
-      next: (data) => {
-        if (!smartStream.push(data)) {
-          // Pause the observable if the stream buffer is full
-          smartStream.observableSubscription?.unsubscribe();
-          smartStream.once('drain', () => {
-            // Resume the observable when the stream buffer is drained
-            smartStream.observableSubscription?.unsubscribe();
-            smartStream.observableSubscription = observable.subscribe(data => {
-              smartStream.push(data);
-            });
-          });
-        }
-      },
-      error: (err) => {
-        smartStream.emit('error', err);
-      },
-      complete: () => {
-        smartStream.push(null); // Signal the end of the data
-      }
-    });
-
-    return smartStream;
-  }
-}

ts/smartstream.classes.streamintake.ts

@@ -1,56 +1,42 @@
 import * as plugins from './smartstream.plugins.js';
 
-export class StreamIntake<T> {
+export class StreamIntake<T> extends plugins.stream.Readable {
   private signalEndBoolean = false;
   private chunkStore: T[] = [];
-
   public pushNextObservable = new plugins.smartrx.ObservableIntake<any>();
-
   private pushedNextDeferred = plugins.smartpromise.defer();
 
-  private readableStream = plugins.from2.obj(async (size, next) => {
+  constructor(options?: plugins.stream.ReadableOptions) {
+    super({ ...options, objectMode: true }); // Ensure that we are in object mode.
+    this.pushNextObservable.push('please push next');
+  }
+
+  _read(size: number): void {
     // console.log('get next');
-    // execute without backpressure
+    const pushChunk = (): void => {
-    while (this.chunkStore.length > 0) {
+      if (this.chunkStore.length > 0) {
-      next(null, this.chunkStore.shift());
+        // If push returns false, then we should stop reading
+        if (!this.push(this.chunkStore.shift())) {
+          return;
         }
+      }
+
+      if (this.chunkStore.length === 0) {
         if (this.signalEndBoolean) {
-      next(null, null);
+          // If we're done, push null to signal the end of the stream
-    }
+          this.push(null);
-
+        } else {
-    // lets trigger backpressure handling
+          // Ask for more data and wait
           this.pushNextObservable.push('please push next');
-    await this.pushedNextDeferred.promise;
+          this.pushedNextDeferred.promise.then(() => {
-    this.pushedNextDeferred = plugins.smartpromise.defer();
+            this.pushedNextDeferred = plugins.smartpromise.defer(); // Reset the deferred
-
+            pushChunk(); // Try pushing the next chunk
-    // execute with backpressure
-    while (this.chunkStore.length > 0) {
-      next(null, this.chunkStore.shift());
-    }
-    if (this.signalEndBoolean) {
-      next(null, null);
-    }
           });
-
-  constructor() {
-    this.pushNextObservable.push('please push next');
         }
-
-  /**
-   * returns a new style readble stream
-   */
-  public getReadable() {
-    const readable = new plugins.stream.Readable({
-      objectMode: true,
-    });
-    return readable.wrap(this.readableStream);
       }
+    };
 
-  /**
+    pushChunk();
-   * returns an oldstyle readble stream
-   */
-  public getReadableStream() {
-    return this.readableStream;
   }
 
   public pushData(chunkData: T) {

ts/smartstream.classes.streamwrapper.ts

@@ -94,14 +94,3 @@ export class StreamWrapper {
     return done.promise;
   }
 }
-
-export let cleanPipe = () => {
-  return plugins.through2.obj(
-    (file, enc, cb) => {
-      cb();
-    },
-    (cb) => {
-      cb();
-    }
-  );
-};

ts/smartstream.duplex.ts

@@ -1,83 +0,0 @@
-import * as plugins from './smartstream.plugins.js';
-
-export interface ITruncateFunc {
-  (): void;
-}
-
-export interface IPipeMoreFunc {
-  (pipeObject: any): void;
-}
-
-export interface IStreamTools {
-  truncate: ITruncateFunc;
-  pipeMore: IPipeMoreFunc;
-}
-
-export interface IStreamFunction<T, rT> {
-  (chunkArg: T, toolsArg: IStreamTools): Promise<rT>;
-}
-
-export interface IStreamEndFunction<rT> {
-  (toolsArg: IStreamTools): Promise<rT>;
-}
-
-export interface IStreamOptions {
-  objectMode?: boolean;
-  readableObjectMode?: boolean;
-  writableObjectMode?: boolean;
-}
-
-export let createDuplexStream = <T, rT>(
-  funcArg: IStreamFunction<T, rT>,
-  endFuncArg?: IStreamEndFunction<rT>,
-  optionsArg: IStreamOptions = {
-    objectMode: false,
-    readableObjectMode: true,
-    writableObjectMode: true,
-  }
-) => {
-  return plugins.through2(
-    optionsArg,
-    function (chunk, enc, cb) {
-      let truncated = false;
-      const tools: IStreamTools = {
-        truncate: () => {
-          truncated = true;
-          cb(null, null);
-        },
-        pipeMore: (pipeObject) => {
-          this.push(pipeObject);
-        },
-      };
-      const asyncWrapper = async () => {
-        const resultChunk: rT = await funcArg(chunk, tools);
-        if (!truncated) {
-          cb(null, resultChunk);
-        }
-      };
-      asyncWrapper().catch((err) => {
-        console.log(err);
-      });
-    },
-    function (cb) {
-      const tools: IStreamTools = {
-        truncate: () => {
-          cb();
-        },
-        pipeMore: (pushArg) => {
-          this.push(pushArg);
-        },
-      };
-      const asyncWrapper = async () => {
-        if (endFuncArg) {
-          const result = await endFuncArg(tools);
-          this.push(result);
-        }
-        cb();
-      };
-      asyncWrapper().catch((err) => {
-        console.log(err);
-      });
-    }
-  );
-};

ts/smartstream.plugins.ts

@@ -9,8 +9,3 @@ import * as smartrx from '@push.rocks/smartrx';
 
 export { smartpromise, smartrx };
 
-// thirdparty
-import from2 from 'from2';
-import through2 from 'through2';
-
-export { from2, through2 };