Update isValidJSON.md

snippets/isValidJSON.md

@@ -8,7 +8,9 @@ Use `JSON.parse()` and a `try... catch` block to check if the provided argument
 const isValidJSON = obj => {
   try {
     JSON.parse(obj);
+    if (o && typeof o === "object") {
             return true;
+        }
 } catch (e) {
     return false;
   }