Bugfix:binary-arrays/concat/solution

Omid-Heydarzadeh · Omid-Heydarzadeh · commit ae0a73fc1a8a · 2022-03-15T22:55:51.000+03:30
diff --git a/4-binary/01-arraybuffer-binary-arrays/01-concat/_js.view/solution.js b/4-binary/01-arraybuffer-binary-arrays/01-concat/_js.view/solution.js
@@ -2,9 +2,9 @@ function concat(arrays) {
   // sum of individual array lengths
   let totalLength = arrays.reduce((acc, value) => acc + value.length, 0);
 
-  if (!arrays.length) return null;
-
   let result = new Uint8Array(totalLength);
+  
+  if (!arrays.length) return result;
 
   // for each array - copy it over result
   // next array is copied right after the previous one
