fixed pointer error

lib/wrappers/javascript/contourwall.ts

@@ -1,6 +1,8 @@
 
 import { cv, cvTranslateError } from 'https://deno.land/x/[email protected]/mod.ts';
 import { sleep } from "https://deno.land/x/sleep/mod.ts"
+import { Mat } from "https://unpkg.com/[email protected]/types/opencv.ts";
+
 
 export class ContourWall {
   private lib
@@ -42,9 +44,10 @@ export class ContourWall {
     );
     this.cw_core_ptr = null;
     this.baudrate = baudrate
+
 
     this.pixels = new cv.Mat(40, 60, cv.CV_8UC3);
-    this.pixels.set([0, 0, 0]); 
+    this.pixels.setTo(new cv.Scalar(0, 0, 0));
   }
 
   new(){

lib/wrappers/javascript/demo.ts

@@ -1,3 +1,5 @@
+import { cv, cvTranslateError } from 'https://deno.land/x/[email protected]/mod.ts';
+import { Mat } from "https://unpkg.com/[email protected]/types/opencv.ts";
 import { ContourWall } from "./contourwall.ts"; 
 
   const cw = new ContourWall();
@@ -12,6 +14,7 @@ import { ContourWall } from "./contourwall.ts";
     "/dev/cu.usbmodem578E0073651"
   );
 
-  cw.pixels.set([255, 255, 255]); // Set all pixels to white
+  cw.pixels.setTo(new cv.Scalar(255, 255, 255)); // Set all pixels to white
   cw.show(100); 
 
+