Object also should not turn into a string during javascript escape.

src/bin.rs

@@ -195,6 +195,9 @@ fn apply_filter(
         (serde_json::Value::Number(number), Filter::JavascriptStringEncode) => {
             Ok(serde_json::Value::Number(number.clone()))
         }
+        (serde_json::Value::Object(obj), Filter::JavascriptStringEncode) => {
+            Ok(serde_json::Value::Object(obj.clone()))
+        }
         (_, Filter::JavascriptStringEncode) => Ok(serde_json::Value::String(javascript_escape(
             &json_value.render(&Vec::new())?,
         ))),