simplified the code and clean up.

Author: Christian Bender

src/ts/others/balanced-symbols.ts

@@ -10,34 +10,20 @@ export function parenthesesChecker(symbols: string) {
   let top: string;
 
   while (index < symbols.length && balanced) {
-    symbol = symbols.charAt(index);
+    symbol = symbols[index];
     if (opens.indexOf(symbol) >= 0) {
       stack.push(symbol);
-      // console.log(`open symbol - stacking ${symbol}`);
     } else {
-      // console.log(`close symbol ${symbol}`);
       if (stack.isEmpty()) {
         balanced = false;
-        // console.log('Stack is empty, no more symbols to pop and compare');
       } else {
         top = stack.pop();
-        // if (!matches(top, symbol)){
         if (!(opens.indexOf(top) === closers.indexOf(symbol))) {
           balanced = false;
-          /* console.log(
-            `poping symbol ${top} - is not a match compared to ${symbol}`
-          ); */
-        } /* else {
-          console.log(
-            `poping symbol ${top} - is is a match compared to ${symbol}`
-          );
-        } */
+        } 
       }
     }
     index++;
   }
-  if (balanced && stack.isEmpty()) {
-    return true;
-  }
-  return false;
+  return balanced && stack.isEmpty();
 }