diff --git a/src/Utilities/Composer.php b/src/Utilities/Composer.php
index 1e423e8..24ee2ce 100644
--- a/src/Utilities/Composer.php
+++ b/src/Utilities/Composer.php
@@ -30,14 +30,9 @@ class Composer
      * @param string $nodeName         Name of node who value should be returned
      * @return null|string
      */
-    public static function getValue($composerJsonPath, $nodeName)
+    public static function getValue(string $composerJsonPath, string $nodeName): ?string
     {
-        $composerJsonString = is_string($composerJsonPath);
-        $composerJsonReadable = false;
-
-        if ($composerJsonString) {
-            $composerJsonReadable = is_readable($composerJsonPath);
-        }
+        $composerJsonReadable = is_readable($composerJsonPath);
 
         /*
          * Provided path or name of node are invalid?
@@ -46,12 +41,12 @@ class Composer
          *
          * Nothing to do
          */
-        if (!$composerJsonString || !is_string($nodeName) || !$composerJsonReadable || empty($nodeName)) {
+        if (!$composerJsonReadable || empty($nodeName)) {
             return null;
         }
 
         $content = file_get_contents($composerJsonPath);
-        $data = json_decode($content);
+        $data = json_decode($content, false);
 
         /*
          * Unknown data from the composer.json file or there is no node with given name?
diff --git a/tests/Utilities/ComposerTest.php b/tests/Utilities/ComposerTest.php
index 7bf6602..c4a9252 100644
--- a/tests/Utilities/ComposerTest.php
+++ b/tests/Utilities/ComposerTest.php
@@ -35,23 +35,15 @@ class ComposerTest extends BaseTestCase
         static::assertHasNoConstructor(Composer::class);
     }
 
-    /**
-     * @param string $composerJsonPath Empty value, e.g. ""
-     * @dataProvider provideEmptyValue
-     */
-    public function testGetValueNotExistingComposerJson($composerJsonPath)
+    public function testGetValueNotExistingComposerJson(): void
     {
-        self::assertNull(Composer::getValue($composerJsonPath, ''));
+        self::assertNull(Composer::getValue('', ''));
         self::assertNull(Composer::getValue('not/existing/composer.json', ''));
     }
 
-    /**
-     * @param string $nodeName Empty value, e.g. ""
-     * @dataProvider provideEmptyValue
-     */
-    public function testGetValueNotExistingNode($nodeName)
+    public function testGetValueNotExistingNode(): void
     {
-        self::assertNull(Composer::getValue($this->composerJsonPath, $nodeName));
+        self::assertNull(Composer::getValue($this->composerJsonPath, ''));
         self::assertNull(Composer::getValue($this->composerJsonPath, 'not_existing_node'));
     }
 
@@ -61,7 +53,7 @@ class ComposerTest extends BaseTestCase
      *
      * @dataProvider getExistingNode
      */
-    public function testGetValueExistingNode($nodeName, $nodeValue)
+    public function testGetValueExistingNode(string $nodeName, string $nodeValue): void
     {
         self::assertEquals($nodeValue, Composer::getValue($this->composerJsonPath, $nodeName));
     }
@@ -71,7 +63,7 @@ class ComposerTest extends BaseTestCase
      *
      * @return Generator
      */
-    public function getExistingNode()
+    public function getExistingNode(): Generator
     {
         yield[
             'name',