diff --git a/src/Conso/Commands/Compile.php b/src/Conso/Commands/Compile.php
index 743352f..19008fb 100644
--- a/src/Conso/Commands/Compile.php
+++ b/src/Conso/Commands/Compile.php
@@ -1,188 +1,204 @@
-<?php namespace Conso\Commands;
+<?php
+
+namespace Conso\Commands;
 
 /**
  * @author    <contact@lotfio.net>
- * @package   Conso PHP Console Creator
+ *
  * @version   2.0.0
+ *
  * @license   MIT
+ *
  * @category  CLI
+ *
  * @copyright 2019 Lotfio Lakehal
  */
 
 use Conso\Command;
-use Conso\Exceptions\{CompileException,InputException};
-use Conso\Contracts\{CommandInterface,InputInterface,OutputInterface};
+use Conso\Contracts\CommandInterface;
+use Conso\Contracts\InputInterface;
+use Conso\Contracts\OutputInterface;
+use Conso\Exceptions\CompileException;
+use Conso\Exceptions\InputException;
 
 class Compile extends Command implements CommandInterface
 {
     /**
-     * sub commands
+     * sub commands.
      *
      * @var array
      */
     protected $sub = [
-        'init'
+        'init',
     ];
 
     /**
-     * flags
+     * flags.
      *
      * @var array
      */
     protected $flags = [
-        '--no-shebang'
+        '--no-shebang',
     ];
 
     /**
-     * command help
+     * command help.
      *
      * @var array
      */
-    protected $help  = [
+    protected $help = [
         'sub' => [
-            'init'   => 'initialize .json build file'
+            'init'   => 'initialize .json build file',
         ],
         'flags' => [
-            '--no-shebang' => 'no stub shebang, usefull when invoking phar from http'
-        ]
+            '--no-shebang' => 'no stub shebang, usefull when invoking phar from http',
+        ],
     ];
 
     /**
-     * command description
+     * command description.
      *
      * @var string
      */
     protected $description = 'Compile your package to a shareable phar file.';
 
     /**
-     * set up command dependencies
+     * set up command dependencies.
      */
     public function __construct()
     {
         $this->cwd = getcwd();
-        $this->packageFile = $this->cwd . '/conso.json';
+        $this->packageFile = $this->cwd.'/conso.json';
     }
 
     /**
-     * execute method
+     * execute method.
+     *
+     * @param InputInterface  $input
+     * @param OutputInterface $output
      *
-     * @param  InputInterface  $input
-     * @param  OutputInterface $output
      * @return void
      */
-    public function execute(InputInterface $input, OutputInterface $output) : void
+    public function execute(InputInterface $input, OutputInterface $output): void
     {
-        if(!\file_exists($this->packageFile))
+        if (!\file_exists($this->packageFile)) {
             throw new CompileException("package file ($this->packageFile) not found");
-
-        if(ini_get('phar.readonly') == 1)
-            throw new CompileException("phar is read only mode ! it should be turned off from php.init to compile.");
-
+        }
+        if (ini_get('phar.readonly') == 1) {
+            throw new CompileException('phar is read only mode ! it should be turned off from php.init to compile.');
+        }
         // read package file
         $buildFile = (array) json_decode(file_get_contents($this->packageFile));
 
         // validate build file
         $this->validateBuildFile($buildFile);
-        
+
         // create a phar file if everything went well
         $shebang = ($input->flag('--no-shebang') === false) ? true : false;
-        if($this->createPhar($buildFile, $shebang))
+        if ($this->createPhar($buildFile, $shebang)) {
             exit($output->writeLn("\npackage compiled successfully .\n\n", 'green'));
-        
+        }
+
         $output->writeLn("error compiling package.\n", 'red');
     }
 
     /**
-     * init package to compile
+     * init package to compile.
      *
      * @return void
      */
-    public function init(InputInterface $input, OutputInterface $output) : void
+    public function init(InputInterface $input, OutputInterface $output): void
     {
-        if(!\is_writable($this->cwd))
+        if (!\is_writable($this->cwd)) {
             throw new InputException("{$this->cwd} is not writable.");
-
-        if(\file_exists($this->packageFile))
+        }
+        if (\file_exists($this->packageFile)) {
             throw new InputException("build file ({$this->packageFile}) exists already.");
-
+        }
         $content = [
-            "src" => [
-                "src/Conso",
-                "vendor"
+            'src' => [
+                'src/Conso',
+                'vendor',
             ],
-            "build" => "build",
-            "stub"  => "conso",
-            "phar"  => "conso.phar"
+            'build' => 'build',
+            'stub'  => 'conso',
+            'phar'  => 'conso.phar',
         ];
 
-        if(\file_put_contents($this->packageFile, json_encode($content, JSON_PRETTY_PRINT)))
+        if (\file_put_contents($this->packageFile, json_encode($content, JSON_PRETTY_PRINT))) {
             exit($output->writeLn("\nbuild file created successfully.\n\n", 'green'));
+        }
 
         $output->writeLn("error creating build file.\n", 'red');
     }
 
     /**
-     * validate build file 
+     * validate build file.
      *
      * @param  string
+     *
      * @return void
      */
-    private function validateBuildFile(array $file) : void
+    private function validateBuildFile(array $file): void
     {
-        if(!is_array($file) || count($file) < 4)
-            throw new CompileException("build file is not a valid json file.");
-
-        if(!in_array('src', array_keys($file)))
-            throw new CompileException("source (src) directory is missing from package file.");
-
-        if(!in_array('build', array_keys($file)))
-            throw new CompileException("build (build) directory is missing from package file.");
-
-        if(!in_array('stub', array_keys($file)))
-            throw new CompileException("stub (stub) file is missing from package file.");
-
-        if(!in_array('phar', array_keys($file)))
-            throw new CompileException("output (phar) file is missing from package file.");
-
-        if(!is_array($file['src']))
-            throw new CompileException("source (src) directory must be an array of valid directories.");
-
-        foreach($file['src'] as $dir)
-            if(!is_dir($dir))
+        if (!is_array($file) || count($file) < 4) {
+            throw new CompileException('build file is not a valid json file.');
+        }
+        if (!in_array('src', array_keys($file))) {
+            throw new CompileException('source (src) directory is missing from package file.');
+        }
+        if (!in_array('build', array_keys($file))) {
+            throw new CompileException('build (build) directory is missing from package file.');
+        }
+        if (!in_array('stub', array_keys($file))) {
+            throw new CompileException('stub (stub) file is missing from package file.');
+        }
+        if (!in_array('phar', array_keys($file))) {
+            throw new CompileException('output (phar) file is missing from package file.');
+        }
+        if (!is_array($file['src'])) {
+            throw new CompileException('source (src) directory must be an array of valid directories.');
+        }
+        foreach ($file['src'] as $dir) {
+            if (!is_dir($dir)) {
                 throw new CompileException("source ($dir) directory is not a valid directory.");
-        
-        if(!is_string($file['build']) || !is_dir($file['build']) || !is_writable($file['build']))
+            }
+        }
+        if (!is_string($file['build']) || !is_dir($file['build']) || !is_writable($file['build'])) {
             throw new CompileException("build ({$file['build']}) directory is not a valid directory.");
-
-        if(!is_string($file['stub']) || !file_exists($file['stub']))
+        }
+        if (!is_string($file['stub']) || !file_exists($file['stub'])) {
             throw new CompileException("stub file ({$file['stub']}) not found.");
-
-        if(!is_string($file['phar']) || strlen($file['phar']) < 1 || preg_match('/\.phar$/', $file['phar']) == false)
+        }
+        if (!is_string($file['phar']) || strlen($file['phar']) < 1 || preg_match('/\.phar$/', $file['phar']) == false) {
             throw new CompileException("phar file ({$file['phar']}) must be a valid file ends with .phar extension.");
+        }
     }
 
     /**
-     * create a phar
+     * create a phar.
+     *
+     * @param array $rules
      *
-     * @param  array $rules
      * @return void
      */
-    private function createPhar(array $rules, bool $shebang = false) : bool
+    private function createPhar(array $rules, bool $shebang = false): bool
     {
-        $buildLocation = rtrim($rules['build'], '/') . "/package/";
+        $buildLocation = rtrim($rules['build'], '/').'/package/';
 
         // delete old build files if any
         deleteTree($buildLocation);
 
         // copy project
-        foreach($rules['src'] as $src)
-            copyDirectory($src, $buildLocation . rtrim($src, '/'));
+        foreach ($rules['src'] as $src) {
+            copyDirectory($src, $buildLocation.rtrim($src, '/'));
+        }
 
         // copy stub file
-        copy($rules['stub'], $buildLocation . $rules['stub']);
+        copy($rules['stub'], $buildLocation.$rules['stub']);
 
         // create phar
-        $phar = new \Phar(rtrim($rules['build'], '/') . "/" . $rules['phar']);
+        $phar = new \Phar(rtrim($rules['build'], '/').'/'.$rules['phar']);
 
         // start buffering. Mandatory to modify stub to add shebang
         $phar->startBuffering();
@@ -194,7 +210,7 @@ private function createPhar(array $rules, bool $shebang = false) : bool
         $phar->buildFromDirectory($buildLocation);
 
         // add shebang
-        $stub = "#!/usr/bin/env php \n" . $defaultStub;
+        $stub = "#!/usr/bin/env php \n".$defaultStub;
         $phar->setStub($shebang === true ? $stub : $defaultStub);
 
         // stop buffering
@@ -203,8 +219,9 @@ private function createPhar(array $rules, bool $shebang = false) : bool
         // gzip compressin
         $phar->compressFiles(\Phar::GZ);
 
-        # Make the file executable
-        chmod(rtrim($rules['build'], '/') . "/" . $rules['phar'], 0770);
+        // Make the file executable
+        chmod(rtrim($rules['build'], '/').'/'.$rules['phar'], 0770);
+
         return deleteTree($buildLocation);
     }
-}
\ No newline at end of file
+}
diff --git a/src/Conso/Testing/TestCase.php b/src/Conso/Testing/TestCase.php
index d40bbe1..3103d98 100644
--- a/src/Conso/Testing/TestCase.php
+++ b/src/Conso/Testing/TestCase.php
@@ -37,4 +37,4 @@ public function setUp(): void
         $this->output->disableAnsi();
         $this->output->enableTestMode();
     }
-}
\ No newline at end of file
+}
diff --git a/src/Conso/hlprs.php b/src/Conso/hlprs.php
index 28bf0f1..da32f1e 100644
--- a/src/Conso/hlprs.php
+++ b/src/Conso/hlprs.php
@@ -117,46 +117,49 @@ function commandHelp(array $command, $output)
 }
 
 /**
- * copy directory recursively
+ * copy directory recursively.
  *
  * @param string $source
  * @param string $destination
+ *
  * @return void
  */
-function copyDirectory(string $source, string $destination) : void
+function copyDirectory(string $source, string $destination): void
 {
     mkdir($destination, 0755, true);
 
     foreach (
     $iterator = new \RecursiveIteratorIterator(
         new \RecursiveDirectoryIterator($source, \RecursiveDirectoryIterator::SKIP_DOTS),
-        \RecursiveIteratorIterator::SELF_FIRST) as $item
-    )
-    {
+        \RecursiveIteratorIterator::SELF_FIRST
+    ) as $item
+    ) {
         if ($item->isDir()) {
-            mkdir($destination . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
+            mkdir($destination.DIRECTORY_SEPARATOR.$iterator->getSubPathName());
         } else {
-            copy($item, $destination . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
+            copy($item, $destination.DIRECTORY_SEPARATOR.$iterator->getSubPathName());
         }
     }
 }
 
 /**
- * delete directory recursively
+ * delete directory recursively.
  *
  * @param string $dir
+ *
  * @return void
  */
 function deleteTree(string $dir)
-{ 
-    if(!is_dir($dir))
+{
+    if (!is_dir($dir)) {
         return false;
-        
-    $files = array_diff(scandir($dir), array('.', '..')); 
+    }
+
+    $files = array_diff(scandir($dir), ['.', '..']);
 
-    foreach ($files as $file) { 
-        (is_dir("$dir/$file")) ? deleteTree("$dir/$file") : unlink("$dir/$file"); 
+    foreach ($files as $file) {
+        (is_dir("$dir/$file")) ? deleteTree("$dir/$file") : unlink("$dir/$file");
     }
 
-    return rmdir($dir); 
-} 
\ No newline at end of file
+    return rmdir($dir);
+}
diff --git a/tests/Unit/CommandInvokerTest.php b/tests/Unit/CommandInvokerTest.php
index 3677c74..bdc69d2 100644
--- a/tests/Unit/CommandInvokerTest.php
+++ b/tests/Unit/CommandInvokerTest.php
@@ -14,10 +14,9 @@
  * @copyright 2019 Lotfio Lakehal
  */
 
+use Conso\CommandInvoker;
 use Conso\Conso;
 use Conso\Input;
-use Conso\Output;
-use Conso\CommandInvoker;
 use Conso\Testing\TestCase;
 
 class CommandInvokerTest extends TestCase
@@ -37,7 +36,7 @@ class CommandInvokerTest extends TestCase
     public function setUp(): void
     {
         parent::setUp();
-        
+
         $this->commands = [
             [
                 'name'          => 'make',
diff --git a/tests/Unit/CommandLinkerTest.php b/tests/Unit/CommandLinkerTest.php
index fa240b0..f5cb37e 100644
--- a/tests/Unit/CommandLinkerTest.php
+++ b/tests/Unit/CommandLinkerTest.php
@@ -14,11 +14,10 @@
  * @copyright 2019 Lotfio Lakehal
  */
 
-use Conso\Input;
-use Conso\Output;
 use Conso\CommandLinker;
-use Conso\Testing\TestCase;
 use Conso\Exceptions\InputException;
+use Conso\Input;
+use Conso\Testing\TestCase;
 
 class CommandLinkerTest extends TestCase
 {
diff --git a/tests/Unit/ConsoTest.php b/tests/Unit/ConsoTest.php
index 92e3227..2da3f85 100644
--- a/tests/Unit/ConsoTest.php
+++ b/tests/Unit/ConsoTest.php
@@ -16,7 +16,6 @@
 
 use Conso\Conso;
 use Conso\Input;
-use Conso\Output;
 use Conso\Testing\TestCase;
 
 class ConsoTest extends TestCase