From 6451e93c12d6a95caf1f66cadc82cf6924cd6349 Mon Sep 17 00:00:00 2001
From: Philipp Kunz <gitlab@philkunz.com>
Date: Sun, 2 Jun 2024 23:40:52 +0200
Subject: [PATCH] fix(smartduplex): now has a .getWebStreams method, that
 exposes a web streams compatible API

---
 ts/00_commitinfo_data.ts              |  2 +-
 ts/smartstream.classes.smartduplex.ts | 49 ++++++++++++++++++++
 ts_web/00_commitinfo_data.ts          |  2 +-
 ts_web/convert.ts                     | 64 ---------------------------
 ts_web/index.ts                       |  3 --
 5 files changed, 51 insertions(+), 69 deletions(-)
 delete mode 100644 ts_web/convert.ts

diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 8c25f90..76649a8 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: '3.0.39',
+  version: '3.0.40',
   description: 'A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.'
 }
diff --git a/ts/smartstream.classes.smartduplex.ts b/ts/smartstream.classes.smartduplex.ts
index f329744..ae9b629 100644
--- a/ts/smartstream.classes.smartduplex.ts
+++ b/ts/smartstream.classes.smartduplex.ts
@@ -157,4 +157,53 @@ export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
     this.backpressuredArray.push(null);
     callback();
   }
+
+  public getWebStreams(): { readable: ReadableStream, writable: WritableStream } {
+    const duplex = this;
+    const readable = new ReadableStream({
+      start(controller) {
+        duplex.on('readable', () => {
+          let chunk;
+          while (null !== (chunk = duplex.read())) {
+            controller.enqueue(chunk);
+          }
+        });
+  
+        duplex.on('end', () => {
+          controller.close();
+        });
+      },
+      cancel(reason) {
+        duplex.destroy(new Error(reason));
+      }
+    });
+  
+    const writable = new WritableStream({
+      write(chunk) {
+        return new Promise<void>((resolve, reject) => {
+          const isBackpressured = !duplex.write(chunk, (error) => {
+            if (error) {
+              reject(error);
+            } else {
+              resolve();
+            }
+          });
+  
+          if (isBackpressured) {
+            duplex.once('drain', resolve);
+          }
+        });
+      },
+      close() {
+        return new Promise<void>((resolve, reject) => {
+          duplex.end(resolve);
+        });
+      },
+      abort(reason) {
+        duplex.destroy(new Error(reason));
+      }
+    });
+  
+    return { readable, writable };
+  }
 }
diff --git a/ts_web/00_commitinfo_data.ts b/ts_web/00_commitinfo_data.ts
index 8c25f90..76649a8 100644
--- a/ts_web/00_commitinfo_data.ts
+++ b/ts_web/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartstream',
-  version: '3.0.39',
+  version: '3.0.40',
   description: 'A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.'
 }
diff --git a/ts_web/convert.ts b/ts_web/convert.ts
deleted file mode 100644
index a88e297..0000000
--- a/ts_web/convert.ts
+++ /dev/null
@@ -1,64 +0,0 @@
-export interface IDuplexStream {
-  read(): any;
-  write(chunk: any, callback?: (error?: Error | null) => void): boolean;
-  on(event: string, listener: (...args: any[]) => void): this;
-  once(event: string, listener: (...args: any[]) => void): this;
-  end(callback?: () => void): void;
-  destroy(error?: Error): void;
-}
-
-export interface IReadableStreamOptions {
-  highWaterMark?: number;
-}
-
-export interface IWritableStreamOptions {
-  highWaterMark?: number;
-}
-
-export function convertDuplexToWebStream(duplex: IDuplexStream): { readable: ReadableStream, writable: WritableStream } {
-  const readable = new ReadableStream({
-    start(controller) {
-      duplex.on('readable', () => {
-        let chunk;
-        while (null !== (chunk = duplex.read())) {
-          controller.enqueue(chunk);
-        }
-      });
-
-      duplex.on('end', () => {
-        controller.close();
-      });
-    },
-    cancel(reason) {
-      duplex.destroy(new Error(reason));
-    }
-  });
-
-  const writable = new WritableStream({
-    write(chunk) {
-      return new Promise<void>((resolve, reject) => {
-        const isBackpressured = !duplex.write(chunk, (error) => {
-          if (error) {
-            reject(error);
-          } else {
-            resolve();
-          }
-        });
-
-        if (isBackpressured) {
-          duplex.once('drain', resolve);
-        }
-      });
-    },
-    close() {
-      return new Promise<void>((resolve, reject) => {
-        duplex.end(resolve);
-      });
-    },
-    abort(reason) {
-      duplex.destroy(new Error(reason));
-    }
-  });
-
-  return { readable, writable };
-}
diff --git a/ts_web/index.ts b/ts_web/index.ts
index b49b5d7..7a71611 100644
--- a/ts_web/index.ts
+++ b/ts_web/index.ts
@@ -1,5 +1,2 @@
 import './plugins.js';
 export * from './classes.webduplexstream.js';
-export {
-  convertDuplexToWebStream,
-} from './convert.js';
\ No newline at end of file