Use the render function when doing string coercion for json values.

src/bin.rs

@@ -177,7 +177,15 @@ impl CompareContextElement for serde_json::Value {
         // When doing a greater than or less than comparison,
         // javascript coerces objects into "[object Object]".
         if let serde_json::Value::Object(_) = self {
-            return OwnedLiteral::LString("[object Object]".to_owned()).partial_compare(other);
+            return OwnedLiteral::LString(self.render(&Vec::new()).unwrap_or("".to_owned()))
+                .partial_compare(other);
+        }
+
+        // When doing a greater than or less than comparison
+        // javascript turns arrays into strings.
+        if let serde_json::Value::Array(_) = self {
+            return OwnedLiteral::LString(self.render(&Vec::new()).unwrap_or("".to_owned()))
+                .partial_compare(other);
         }
 
         // Handle other serde_json::Value