diff --git a/src/Conso/CommandInvoker.php b/src/Conso/CommandInvoker.php
index fea03d9..de63e7c 100644
--- a/src/Conso/CommandInvoker.php
+++ b/src/Conso/CommandInvoker.php
@@ -96,9 +96,11 @@ public function showConsoleInformation(array $commands)
      *
      * @return void
      */
-    public function showConsoleCommands(array $commands) : void
+    public function showConsoleCommands(array $commands): void
     {
-        if (count($commands) < 1) return;
+        if (count($commands) < 1) {
+            return;
+        }
 
         // sort & get max length command
         sort($commands);
@@ -107,15 +109,14 @@ public function showConsoleCommands(array $commands) : void
         // group commands
         $grouped = [];
 
-        foreach($commands as $command)
+        foreach ($commands as $command) {
             $grouped[$command['group']][] = $command;
+        }
 
         $this->output->writeLn("\nAvailable Commands:\n\n", 'yellow');
 
-        if(isset($grouped['main'])) //no groups
-        {
-            foreach($grouped['main'] as $command)
-            {
+        if (isset($grouped['main'])) { //no groups
+            foreach ($grouped['main'] as $command) {
                 $this->output->writeLn('  '.$command['name'].str_repeat(' ', ($max - strlen($command['name'])) + 4), 'green');
                 $this->output->writeLn($command['description']."\n");
             }
@@ -123,8 +124,7 @@ public function showConsoleCommands(array $commands) : void
             unset($grouped['main']);
         }
 
-        foreach($grouped as $group => $commands) // if groups
-        {
+        foreach ($grouped as $group => $commands) { // if groups
             $this->output->writeLn("\n$group\n\n", 'yellow');
 
             foreach ($commands as $command) {
@@ -190,6 +190,7 @@ public function invoke(?array $command)
     protected function invokeCallback(array $command)
     {
         $closure = \Closure::bind($command['action'], $this->app);
+
         return call_user_func_array($closure, [$this->input, $this->output]);
     }
 
@@ -205,8 +206,8 @@ protected function invokeClassMethod(array $command)
         $subCommand = $this->input->subCommand();
 
         // append namespace
-        $namespace = (!is_null($command['namespace'])) ? rtrim($command['namespace'], '\\') . '\\' : '';
-        $class     =  $namespace . ucfirst($command['action']);
+        $namespace = (!is_null($command['namespace'])) ? rtrim($command['namespace'], '\\').'\\' : '';
+        $class = $namespace.ucfirst($command['action']);
 
         if (!class_exists($class)) {
             throw new InvokerException("command class ($class) is not defined.");
diff --git a/src/Conso/CommandsTable.php b/src/Conso/CommandsTable.php
index e03956e..63a9b50 100644
--- a/src/Conso/CommandsTable.php
+++ b/src/Conso/CommandsTable.php
@@ -30,18 +30,18 @@ class CommandsTable
     ];
 
     /**
-     * command group
+     * command group.
      *
      * @var ?string
      */
     private $group = 'main';
 
     /**
-     * command namespace
+     * command namespace.
      *
      * @var ?string
      */
-    private $namespace = NULL;
+    private $namespace = null;
 
     /**
      * add command method.
@@ -62,7 +62,7 @@ public function add(string $name, $action): self
             'description'   => '',
             'help'          => [],
             'group'         => $this->group,
-            'namespace'     => $this->namespace
+            'namespace'     => $this->namespace,
         ];
 
         return $this;
@@ -147,45 +147,47 @@ public function help(array $help): self
     }
 
     /**
-     * set command group
+     * set command group.
      *
      * @param string $group
+     *
      * @return void
      */
-    public function setGroup(string $group) : void
+    public function setGroup(string $group): void
     {
         $this->group = $group;
     }
 
     /**
-     * unset group
+     * unset group.
      *
      * @return void
      */
-    public function unsetGroup() : void
+    public function unsetGroup(): void
     {
         $this->group = 'main';
     }
 
     /**
-     * set namespace
+     * set namespace.
      *
      * @param string $namespace
+     *
      * @return void
      */
-    public function setNamespace(string $namespace) : void
+    public function setNamespace(string $namespace): void
     {
         $this->namespace = $namespace;
     }
 
     /**
-     * unset namespace
+     * unset namespace.
      *
      * @return void
      */
-    public function unsetNamespace() : void
+    public function unsetNamespace(): void
     {
-        $this->namespace = NULL;
+        $this->namespace = null;
     }
 
     /**
diff --git a/src/Conso/Conso.php b/src/Conso/Conso.php
index 222da6f..ec2ded2 100644
--- a/src/Conso/Conso.php
+++ b/src/Conso/Conso.php
@@ -85,11 +85,11 @@ public function command(string $name, $action): CommandsTable
     }
 
     /**
-     * command group method
+     * command group method.
      *
      * @return void
      */
-    public function group(string $name, callable $callback) : void
+    public function group(string $name, callable $callback): void
     {
         $this->table->setGroup($name);
         call_user_func($callback, $this);
@@ -97,11 +97,11 @@ public function group(string $name, callable $callback) : void
     }
 
     /**
-     * command group method
+     * command group method.
      *
      * @return void
      */
-    public function namespace(string $namespace, callable $callback) : void
+    public function namespace(string $namespace, callable $callback): void
     {
         $this->table->setNamespace($namespace);
         call_user_func($callback, $this);
diff --git a/src/Conso/hlprs.php b/src/Conso/hlprs.php
index 1a49493..39fa88a 100644
--- a/src/Conso/hlprs.php
+++ b/src/Conso/hlprs.php
@@ -71,18 +71,16 @@ function readCommandPropertiesFromClass(array &$command): void
 
     if (is_string($command['action'])) { // if is controller
 
-        $namespace = (!is_null($command['namespace'])) ? rtrim($command['namespace'], '\\') . '\\' : '';
-        $class     =  $namespace . ucfirst($command['action']);
+        $namespace = (!is_null($command['namespace'])) ? rtrim($command['namespace'], '\\').'\\' : '';
+        $class = $namespace.ucfirst($command['action']);
 
-        if(class_exists($class))
-        {
+        if (class_exists($class)) {
             foreach ($list as $lst) {
                 if (empty($command[$lst])) {
                     $command[$lst] = readProtectedProperty($class, $lst);
                 }
             }
         }
-
     } // fill from command class if not defined by method
 }
 
diff --git a/tests/Unit/CommandInvokerTest.php b/tests/Unit/CommandInvokerTest.php
index 9f8c8f7..a49c186 100644
--- a/tests/Unit/CommandInvokerTest.php
+++ b/tests/Unit/CommandInvokerTest.php
@@ -57,7 +57,7 @@ public function setUp(): void
                 'description'   => 'This is make command',
                 'help'          => [],
                 'group'         => 'main',
-                'namespace'     => NULL
+                'namespace'     => null,
             ],
         ];
     }
diff --git a/tests/Unit/CommandLinkerTest.php b/tests/Unit/CommandLinkerTest.php
index d87ac86..1fe9d97 100644
--- a/tests/Unit/CommandLinkerTest.php
+++ b/tests/Unit/CommandLinkerTest.php
@@ -57,7 +57,7 @@ public function setUp(): void
                 'description'   => 'This is make command',
                 'help'          => [],
                 'group'         => 'main',
-                'namespace'     => NULL
+                'namespace'     => null,
             ],
         ];
     }