Use if instead of ternary in arrow function

Author: v1valasvegan

modules/20-functions/85-function-overloads/description.ru.yml

@@ -33,11 +33,13 @@ theory: |
   const concat: {
     (a: number, b: number): string;
     (a: string, b: string): string;
-  } = (a: unknown, b: unknown) => (
-    typeof a === 'string'
-    ? `${a}${b}`
-    : `${a.toFixed()}${b.toFixed()}`
-  )
+  } = (a: unknown, b: unknown) => {
+    if (typeof a === 'number') {
+      return `${a.toFixed()}${b.toFixed()}`;
+    }
+
+    return `${a}${b}`;
+  }
 
   // с использованием алиасов
   type Overloaded = {