channel update

src/channel.js

@@ -340,27 +340,32 @@ export class Channel {
   }
 
   #readDataBlks(size) {
+    let buffer = undefined;
     let endPos = this.#endPos - 1;
-    let buffer = new Uint8Array(0);
 
     this.#writePointerCache = this.#getWritePointer();
 
     if (this.dataSize() < size)
-      return buffer;
+      return new Uint8Array(0);
 
     let blksRequired = Math.floor(size / this.#blockSize);
     if (blksRequired == 0) {
-      return buffer;
+      return new Uint8Array(0);
     }
 
+    buffer = new Uint8Array(blksRequired * this.#blockSize);
+
     if (this.#readPointerCache >= this.#writePointerCache) {
       let spaceBetweenEnd = endPos - this.#readPointerCache;
       let blks = Math.floor(spaceBetweenEnd / this.#blockSize);
 
       if (blks >= blksRequired) {
+        buffer = new Uint8Array(blksRequired * this.#blockSize);
         buffer.set(this.#buffer.subarray(
           this.#readPointerCache, this.#readPointerCache+(blksRequired*this.#blockSize)))
+        return buffer;
       } else {
+        /* Two step to read datas */
 
       }
     } else if (this.#readPointerCache < this.#writePointerCache) {