diff --git a/lib/src/client_options.dart b/lib/src/client_options.dart
index 744c92f..842e7c7 100644
--- a/lib/src/client_options.dart
+++ b/lib/src/client_options.dart
@@ -44,14 +44,7 @@ class ClientOptions {
     return jsify(
       {
         if (applicationName != null) 'applicationName': applicationName,
-        if (connection != null)
-          'connection': jsify({
-            if (connection.attempts != null) 'attempts': connection.attempts,
-            if (connection.nextInterval != null)
-              'interval': connection.nextInterval
-            else if (connection.interval != null)
-              'interval': connection.interval,
-          }),
+        if (connection != null) 'connection': jsify(connection.asMap()),
         if (database != null) 'database': database,
         if (hostname != null) 'hostname': hostname,
         if (hostType != null) 'host_type': hostType.name,
@@ -64,13 +57,7 @@ class ClientOptions {
           'port': portString
         else if (port != null)
           'port': port,
-        if (tls != null)
-          'tls': jsify({
-            if (tls.isEnabled != null) 'enabled': tls.isEnabled,
-            if (tls.isEnforced != null) 'enforce': tls.isEnforced,
-            if (tls.caCertificates != null)
-              'caCertificates': tls.caCertificates,
-          }),
+        if (tls != null) 'tls': jsify(tls.asMap()),
         if (user != null) 'user': user,
       },
     ) as ClientOptions;
diff --git a/lib/src/partial/partial_connection_options.dart b/lib/src/partial/partial_connection_options.dart
index 3a939b4..6d0e7ec 100644
--- a/lib/src/partial/partial_connection_options.dart
+++ b/lib/src/partial/partial_connection_options.dart
@@ -19,4 +19,15 @@ class PartialConnectionOptions {
     required this.nextInterval,
     required this.interval,
   }) : assert(interval == null || nextInterval == null);
+
+  /// used for jsify.
+  Map<String, dynamic> asMap() {
+    return {
+      if (attempts != null) 'attempts': attempts,
+      if (nextInterval != null)
+        'interval': nextInterval
+      else if (interval != null)
+        'interval': interval,
+    };
+  }
 }
diff --git a/lib/src/partial/partial_tls_options.dart b/lib/src/partial/partial_tls_options.dart
index c5bc0fc..fb68773 100644
--- a/lib/src/partial/partial_tls_options.dart
+++ b/lib/src/partial/partial_tls_options.dart
@@ -15,4 +15,13 @@ class PartialTLSOptions {
     required this.isEnforced,
     required this.caCertificates,
   });
+
+  /// used for jsify.
+  Map<String, dynamic> asMap() {
+    return {
+      if (isEnabled != null) 'enabled': isEnabled,
+      if (isEnforced != null) 'enforce': isEnforced,
+      if (caCertificates != null) 'caCertificates': caCertificates,
+    };
+  }
 }