diff --git a/lib/utils/path.dart b/lib/utils/path.dart
index 1898cb3..f59beeb 100644
--- a/lib/utils/path.dart
+++ b/lib/utils/path.dart
@@ -63,17 +63,20 @@ class Path {
       if (isDir) {
         var startDir = Directory(startPath);
         var destDir = Directory(destChildPath);
-        if (!startDir.existsSync())
+        if (!startDir.existsSync()) {
           throw ArgumentError('Start - $startPath is not exist');
+        }
         if (!destDir.existsSync()) destDir.createSync(recursive: true);
         var files = startDir.listSync();
         for (var file in files) {
-          if (file is File)
+          if (file is File) {
             await copy(file.path, destDir.path, false,
                 ignorePattern: ignorePattern, ignoredList: ignoredList);
-          if (file is Directory)
+          }
+          if (file is Directory) {
             await copy(file.path, destDir.path, true,
                 ignorePattern: ignorePattern, ignoredList: ignoredList);
+          }
         }
       } else {
         var destDir = Directory(destPath);
diff --git a/lib/utils/slack/slack_data.dart b/lib/utils/slack/slack_data.dart
index 4adba93..b7e6418 100644
--- a/lib/utils/slack/slack_data.dart
+++ b/lib/utils/slack/slack_data.dart
@@ -97,7 +97,9 @@ class SlackAction {
 class SlackConfirm {
   String? title;
   String? text;
+  // ignore: non_constant_identifier_names
   String? ok_text;
+  // ignore: non_constant_identifier_names
   String? dismiss_text;
 }
 
@@ -105,6 +107,7 @@ class SlackConfirm {
 @JsonSerializable()
 class SlackFile {
   String? title;
+  // ignore: non_constant_identifier_names
   String? initial_comment;
   String? filePath;
   String? fileName;
diff --git a/lib/utils/slack/slack_sender.dart b/lib/utils/slack/slack_sender.dart
index 4608923..7ca3644 100644
--- a/lib/utils/slack/slack_sender.dart
+++ b/lib/utils/slack/slack_sender.dart
@@ -4,6 +4,7 @@ import 'package:color/color.dart';
 import 'package:http/http.dart' as http;
 
 import 'slack_data.dart';
+import 'package:dart_framework/utils/string_util.dart';
 
 enum SlackBuildType { android, ios, windows, mac, web }
 
@@ -146,6 +147,7 @@ class SlackSender {
         ? '${buildURL}android.png'
         : '${buildURL}appstore.png';
     String projectIcon = "$buildURL$appName/icon.png";
+    // ignore: unused_local_variable
     String emoji =
         buildType == SlackBuildType.android ? ":android1: " : ":ios0: ";
     String osColor = buildType == SlackBuildType.ios ? "#ED145B" : "#81CA3F";
@@ -181,8 +183,4 @@ class SlackSender {
     var typeStr = type.toString().replaceAll('SlackBuildType.', '');
     return toPascal(typeStr);
   }
-
-  String toPascal(String raw) {
-    return '${raw[0].toUpperCase()}${raw.substring(1).toLowerCase()}';
-  }
 }
diff --git a/lib/utils/string_util.dart b/lib/utils/string_util.dart
new file mode 100644
index 0000000..49afeff
--- /dev/null
+++ b/lib/utils/string_util.dart
@@ -0,0 +1,3 @@
+String toPascal(String raw) {
+  return '${raw[0].toUpperCase()}${raw.substring(1).toLowerCase()}';
+}
diff --git a/lib/utils/system_util.dart b/lib/utils/system_util.dart
index 178819a..3f58757 100644
--- a/lib/utils/system_util.dart
+++ b/lib/utils/system_util.dart
@@ -68,7 +68,7 @@ Map<String, dynamic>? getMapFromYaml(String yamlStr) {
 
 Future<String> getIPAddress(String domain) async {
   var c = Completer<String>();
-  var ipAddress;
+  late String ipAddress;
   var regEx = RegExp(r'(://)([a-zA-Z0-9-.]+)(/|:)');
   var match = regEx.firstMatch(domain);
   if (match != null && match.groupCount > 2) {