Refactor OpenCV initialization functions to streamline Promise and callback handling in README and test files

Author: ttt43ttt

README.md

@@ -11,8 +11,7 @@ TypeScript is supported (thanks to `mirada`).
 ```js
 import cvModule from "@techstark/opencv-js";
 
-async function main() {
-  // This works with both Promise and callback APIs
+async function getCv() {
   let cv;
   if (cvModule instanceof Promise) {
     cv = await cvModule;
@@ -22,7 +21,11 @@ async function main() {
     });
     cv = cvModule;
   }
+  return cv;
+}
 
+async function main() {
+  const cv = await getCv();
   console.log("OpenCV.js is ready!");
   // You can now use OpenCV functions here
   console.log(cv.getBuildInformation());

test/cv.ts

@@ -18,7 +18,6 @@ export async function setupOpenCv() {
     cv = cvModule;
   }
   global.cv = cv;
-  return { cv };
 }
 
 export function translateException(err: any) {