Fixes filtering tests

src/Support/Backtrace.php

@@ -11,12 +11,9 @@ use Pest\Exceptions\ShouldNotHappen;
  */
 final class Backtrace
 {
-    /**
-     * @var string
-     */
-    private const FILE = 'file';
+    private const string FILE = 'file';
 
-    private const BACKTRACE_OPTIONS = DEBUG_BACKTRACE_IGNORE_ARGS;
+    private const int BACKTRACE_OPTIONS = DEBUG_BACKTRACE_IGNORE_ARGS;
 
     /**
      * Returns the current test file.

src/Support/DatasetInfo.php

@@ -11,9 +11,9 @@ use function Pest\testDirectory;
  */
 final class DatasetInfo
 {
-    public const DATASETS_DIR_NAME = 'Datasets';
+    public const string DATASETS_DIR_NAME = 'Datasets';
 
-    public const DATASETS_FILE_NAME = 'Datasets.php';
+    public const string DATASETS_FILE_NAME = 'Datasets.php';
 
     public static function isInsideADatasetsDirectory(string $file): bool
     {

src/Support/ExceptionTrace.php

@@ -13,7 +13,7 @@ use Throwable;
  */
 final class ExceptionTrace
 {
-    private const UNDEFINED_METHOD = 'Call to undefined method P\\';
+    private const string UNDEFINED_METHOD = 'Call to undefined method P\\';
 
     /**
      * Ensures the given closure reports the good execution context.

src/Support/Exporter.php

@@ -15,7 +15,7 @@ final readonly class Exporter
     /**
      * The maximum number of items in an array to export.
      */
-    private const MAX_ARRAY_ITEMS = 3;
+    private const int MAX_ARRAY_ITEMS = 3;
 
     /**
      * Creates a new Exporter instance.

src/Support/HigherOrderMessage.php

@@ -13,7 +13,7 @@ use Throwable;
  */
 final class HigherOrderMessage
 {
-    public const UNDEFINED_METHOD = 'Method %s does not exist';
+    public const string UNDEFINED_METHOD = 'Method %s does not exist';
 
     /**
      * An optional condition that will determine if the message will be executed.

src/Support/Str.php

@@ -13,12 +13,9 @@ final class Str
      * Pool of alpha-numeric characters for generating (unsafe) random strings
      * from.
      */
-    private const POOL = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+    private const string POOL = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
 
-    /**
-     * @var string
-     */
-    private const PREFIX = '__pest_evaluable_';
+    private const string PREFIX = '__pest_evaluable_';
 
     /**
      * Create a (unsecure & non-cryptographically safe) random alpha-numeric