diff --git a/.gitignore b/.gitignore
index 9f7bfd4..ad837b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,11 +1,18 @@
-vendor
+# Ignore common macOS files and directories
+**/.DS_Store
+
+# Ignore automatically generated files and directories
 /vendor/
 /.fleet
 /.idea
 /.vscode
-/.DS_Store
+
+
+# Ignore Composer generated directory and files
+/vendor
+
+# Ignore development tool generated files and directories
 .fleet
 .idea
 .vscode
-.DS_Store
 composer.lock
\ No newline at end of file
diff --git a/README.md b/README.md
index fc6bdf5..04a6192 100644
--- a/README.md
+++ b/README.md
@@ -41,16 +41,16 @@ To obtain the current list of languages with support, execute the following comm
 ```php
 SpellNumber::getAllLocales();
 // array [
-//    'de', // German from Germany
-//    'en', // English from the United States
-//    'es', // Spanish from Spain
-//    'pt', // Portuguese from Portugal
-//    'fr', // French from France
-//    'it', // Italian from Italy
-//    'ro', // Romanian from Romania
-//    'fa', // Farsi from Iran
-//    'hi', // Hindi from India
-//    'pl', // Polish from Poland
+//    'de', // German
+//    'en', // English
+//    'es', // Spanish
+//    'pt', // Portuguese
+//    'fr', // French
+//    'it', // Italian
+//    'ro', // Romanian
+//    'fa', // Farsi
+//    'hi', // Hindi
+//    'pl', // Polish
 // ]
 ```
 
@@ -121,7 +121,6 @@ SpellNumber::float('12345.23')->locale('es')->toLetters();
 ```
 
 ## Creator
-
 - 🇨🇴 Raúl Mauricio Uñate Castro
 - Email: raulmauriciounate@gmail.com
 
@@ -136,6 +135,8 @@ This project is under the [MIT License](https://choosealicense.com/licenses/mit/
 
 🌟 Support My Projects! 🚀
 
+[![Become a Sponsor](https://img.shields.io/badge/-Become%20a%20Sponsor-green?style=for-the-badge&logo=github)](https://github.com/sponsors/rmunate)
+
 Make any contributions you see fit; the code is entirely yours. Together, we can do amazing things and improve the world of development. Your support is invaluable. ✨
 
 If you have ideas, suggestions, or just want to collaborate, we are open to everything! Join our community and be part of our journey to success! 🌐👩‍💻👨‍💻
diff --git a/README_SPANISH.md b/README_SPANISH.md
index e9d724c..54b27ed 100644
--- a/README_SPANISH.md
+++ b/README_SPANISH.md
@@ -41,16 +41,16 @@ Para obtener la lista actual de idiomas compatibles, ejecuta el siguiente comand
 ```php
 SpellNumber::getAllLocales();
 // array [
-//    'de', // German from Germany
-//    'en', // English from the United States
-//    'es', // Spanish from Spain
-//    'pt', // Portuguese from Portugal
-//    'fr', // French from France
-//    'it', // Italian from Italy
-//    'ro', // Romanian from Romania
-//    'fa', // Farsi from Iran
-//    'hi', // Hindi from India
-//    'pl', // Polish from Poland
+//    'de', // German
+//    'en', // English
+//    'es', // Spanish
+//    'pt', // Portuguese
+//    'fr', // French
+//    'it', // Italian
+//    'ro', // Romanian
+//    'fa', // Farsi
+//    'hi', // Hindi
+//    'pl', // Polish
 // ]
 ```
 
@@ -109,7 +109,6 @@ SpellNumber::value(100.65)->locale('pl')->currency('złotych')->fraction('groszy
 ```
 
 #### Otros Métodos de Inicialización
-
 Para admitir la versión 1.X, se mantienen los siguientes métodos de inicialización.
 
 ```php
@@ -121,7 +120,6 @@ SpellNumber::float('12345.23')->locale('es')->toLetters();
 ```
 
 ## Creador
-
 - 🇨🇴 Raúl Mauricio Uñate Castro
 - Correo Electrónico: raulmauriciounate@gmail.com
 
@@ -133,13 +131,12 @@ SpellNumber::float('12345.23')->locale('es')->toLetters();
 - [Jens Twesmann](https://github.com/jetwes) (German Language)
 
 ## Licencia
-
 Este proyecto se encuentra bajo la [Licencia MIT](https://choosealicense.com/licenses/mit/).
 
 🌟 ¡Apoya Mis Proyectos! 🚀
 
-Realiza cualquier contribución que consideres adecuada; el código es completamente tuyo. Juntos, podemos hacer cosas increíbles y mejorar el mundo del desarrollo. Tu apoyo es invaluable. ✨
+[![Hazte patrocinador](https://img.shields.io/badge/-Házte%20patrocinador-green?style=for-the-badge&logo=github)](https://github.com/sponsors/rmunate)
 
-Si tienes ideas, suger
+Realiza cualquier contribución que consideres adecuada; el código es completamente tuyo. Juntos, podemos hacer cosas increíbles y mejorar el mundo del desarrollo. Tu apoyo es invaluable. ✨
 
-encias o simplemente quieres colaborar, ¡estamos abiertos a todo! Únete a nuestra comunidad y sé parte de nuestro camino hacia el éxito. 🌐👩‍💻👨‍💻
+Si tienes ideas, sugerencias o simplemente quieres colaborar, ¡estamos abiertos a todo! Únete a nuestra comunidad y sé parte de nuestro camino hacia el éxito. 🌐👩‍💻👨‍💻
diff --git a/composer.json b/composer.json
index 861b107..5b508b7 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,6 @@
         "números",
         "numbers",
         "spell",
-        "altum",
         "rmunate"
     ],
     "homepage": "https://github.com/rmunate/SpellNumber",
@@ -41,6 +40,11 @@
             "name": "Siros Fakhri",
             "homepage": "https://github.com/sirosfakhri",
             "role": "developer"
+        },
+        {
+            "name": "Jens Twesmann",
+            "homepage": "https://github.com/jetwes",
+            "role": "developer"
         }
     ],
     "require": {
diff --git a/src/Exceptions/SpellNumberExceptions.php b/src/Exceptions/SpellNumberExceptions.php
index be88295..0b495eb 100644
--- a/src/Exceptions/SpellNumberExceptions.php
+++ b/src/Exceptions/SpellNumberExceptions.php
@@ -23,6 +23,6 @@ final class SpellNumberExceptions extends Exception
      */
     public static function create($message, $code = 0, Throwable $previous = null)
     {
-        return new self('SpellNumber - '.$message, $code, $previous);
+        return new self('Rmunate\Utilities\SpellNumber::class - '.$message, $code, $previous);
     }
 }
diff --git a/src/Langs/Langs.php b/src/Langs/Langs.php
index 70bf7d3..d82f4ec 100644
--- a/src/Langs/Langs.php
+++ b/src/Langs/Langs.php
@@ -62,7 +62,7 @@ final class Langs
      * Get the language locale used in Laravel application.
      * If the locale is supported in ISO 639-1 format, return it. Otherwise, return the default.
      */
-    public static function getLocaleLaravel(): string
+    public static function getLocaleLaravel()
     {
         $localeLaravel = App::getLocale();
         $iso639_1 = substr($localeLaravel, 0, 2);
diff --git a/src/Miscellaneous/Replaces.php b/src/Miscellaneous/Replaces.php
index 66604e7..bc1dbce 100644
--- a/src/Miscellaneous/Replaces.php
+++ b/src/Miscellaneous/Replaces.php
@@ -71,7 +71,7 @@ final class Replaces
      *
      * @return string The adjusted text with the replacements performed.
      */
-    public static function locale(string $value, string $locale, string $current): string
+    public static function locale(string $value, string $locale, string $current)
     {
         // Parameter validation
         if (empty($value) || empty($locale) || empty($current)) {
diff --git a/src/Miscellaneous/Utilities.php b/src/Miscellaneous/Utilities.php
index 2d9ba7b..a5766dc 100644
--- a/src/Miscellaneous/Utilities.php
+++ b/src/Miscellaneous/Utilities.php
@@ -16,7 +16,7 @@ final class Utilities
      *
      * @return bool True if the extension is loaded, false otherwise.
      */
-    public static function validateExtension(string $name): bool
+    public static function validateExtension(string $name)
     {
         return extension_loaded($name);
     }
@@ -28,7 +28,7 @@ public static function validateExtension(string $name): bool
      *
      * @return bool True if the value is numeric, false otherwise.
      */
-    public static function isValidNumber($value): bool
+    public static function isValidNumber($value)
     {
         return is_numeric($value);
     }
@@ -40,7 +40,7 @@ public static function isValidNumber($value): bool
      *
      * @return bool True if the value is a string, false otherwise.
      */
-    public static function isValidString($value): bool
+    public static function isValidString($value)
     {
         return is_string($value);
     }
@@ -52,7 +52,7 @@ public static function isValidString($value): bool
      *
      * @return bool True if the value is an integer, false otherwise.
      */
-    public static function isValidInteger($value): bool
+    public static function isValidInteger($value)
     {
         return is_int($value);
     }
@@ -64,7 +64,7 @@ public static function isValidInteger($value): bool
      *
      * @return bool True if the value is a float, false otherwise.
      */
-    public static function isValidDouble($value): bool
+    public static function isValidDouble($value)
     {
         return is_float($value);
     }
@@ -76,7 +76,7 @@ public static function isValidDouble($value): bool
      *
      * @return bool True if the value does not exceed the maximum, false otherwise.
      */
-    public static function isNotExceedMax($value): bool
+    public static function isNotExceedMax($value)
     {
         //Validate scientific notation.
         if (preg_match('/[+\-E]/i', strval($value)) > 0) {
@@ -105,7 +105,7 @@ public static function isNotExceedMax($value): bool
      *
      * @return bool True if the locale is valid and supported, false otherwise.
      */
-    public static function isValidLocale($locale): bool
+    public static function isValidLocale($locale)
     {
         return in_array($locale, Langs::LOCALES);
     }
@@ -117,7 +117,7 @@ public static function isValidLocale($locale): bool
      *
      * @return string The connector for the given locale.
      */
-    public static function connector($locale): string
+    public static function connector($locale)
     {
         $connector = Langs::LOCALES_CONNECTORS;
 
@@ -131,7 +131,7 @@ public static function connector($locale): string
      *
      * @return string The money connector for the given locale.
      */
-    public static function connectorMoney($locale): string
+    public static function connectorMoney($locale)
     {
         $connector = Langs::LOCALES_CONNECTORS_MONEY;
 
diff --git a/src/SpellNumber.php b/src/SpellNumber.php
index 60a1889..460eef9 100644
--- a/src/SpellNumber.php
+++ b/src/SpellNumber.php
@@ -53,7 +53,7 @@ public function __construct($value, string $type)
      *
      * @return SpellNumber The SpellNumber instance with the fractional value added.
      */
-    public function fractional(int $value): SpellNumber
+    public function fractional(int $value)
     {
         if ($this->type == 'double') {
             throw SpellNumberExceptions::create('The value used initially is already a float value, it is not possible to add other decimals to it.');
@@ -75,7 +75,7 @@ public function fractional(int $value): SpellNumber
      *
      * @return SpellNumber The SpellNumber instance with the updated locale.
      */
-    public function locale(string $locale): SpellNumber
+    public function locale(string $locale)
     {
         if (!Utilities::isValidLocale($locale)) {
             throw SpellNumberExceptions::create('The provided value is not valid. You can use the getAllLocales() method to see the available options.');
@@ -92,7 +92,7 @@ public function locale(string $locale): SpellNumber
      *
      * @return SpellNumber The SpellNumber instance with the updated currency.
      */
-    public function currency(string $currency): SpellNumber
+    public function currency(string $currency)
     {
         $this->currency = Str::title($currency);
 
@@ -106,7 +106,7 @@ public function currency(string $currency): SpellNumber
      *
      * @return SpellNumber The SpellNumber instance with the updated fraction.
      */
-    public function fraction(string $fraction): SpellNumber
+    public function fraction(string $fraction)
     {
         $this->fraction = Str::title($fraction);
 
@@ -118,7 +118,7 @@ public function fraction(string $fraction): SpellNumber
      *
      * @return string The textual representation of the numeric value.
      */
-    public function toLetters(): string
+    public function toLetters()
     {
         return ($this->type == 'integer') ? Str::title($this->integerToLetters()) : Str::title($this->doubleToLetters());
     }
@@ -128,7 +128,7 @@ public function toLetters(): string
      *
      * @return string The textual representation of the money value.
      */
-    public function toMoney(): string
+    public function toMoney()
     {
         return ($this->type == 'integer') ? Str::title($this->integerToMoney()) : Str::title($this->doubleToMoney());
     }
@@ -138,7 +138,7 @@ public function toMoney(): string
      *
      * @return string The textual representation of the integer numeric value.
      */
-    private function integerToLetters(): string
+    private function integerToLetters()
     {
         $formatter = NumberFormatterWrapper::format($this->value, $this->locale);
 
@@ -150,7 +150,7 @@ private function integerToLetters(): string
      *
      * @return string The textual representation of the double numeric value.
      */
-    private function doubleToLetters(): string
+    private function doubleToLetters()
     {
         $parts = explode('.', $this->value);
         $letters1 = NumberFormatterWrapper::format($parts[0], $this->locale);
@@ -164,7 +164,7 @@ private function doubleToLetters(): string
      *
      * @return string The money representation of the integer numeric value.
      */
-    private function integerToMoney(): string
+    private function integerToMoney()
     {
         $letters = NumberFormatterWrapper::format($this->value, $this->locale);
         $letters = Replaces::locale($letters, $this->locale, $this->currency);
@@ -177,7 +177,7 @@ private function integerToMoney(): string
      *
      * @return string The money representation of the double numeric value.
      */
-    private function doubleToMoney(): string
+    private function doubleToMoney()
     {
         $parts = explode('.', $this->value);
         $letters1 = NumberFormatterWrapper::format($parts[0], $this->locale);
diff --git a/src/Validator/SpellNumberValidator.php b/src/Validator/SpellNumberValidator.php
index e7972c3..5a4f4d8 100644
--- a/src/Validator/SpellNumberValidator.php
+++ b/src/Validator/SpellNumberValidator.php
@@ -90,7 +90,7 @@ public function float()
      *
      * @return mixed The result of the validation.
      */
-    public function result(): mixed
+    public function result()
     {
         return $this->response;
     }
diff --git a/src/Validator/Traits/CommonValidate.php b/src/Validator/Traits/CommonValidate.php
index 366b13a..cd0870f 100644
--- a/src/Validator/Traits/CommonValidate.php
+++ b/src/Validator/Traits/CommonValidate.php
@@ -12,7 +12,7 @@ trait CommonValidate
      *
      * @throws SpellNumberExceptions If the "Intl" extension is not installed or not available.
      */
-    private function validateExtension(): bool
+    private function validateExtension()
     {
         // Check if the intl extension is installed.
         if (!Utilities::validateExtension('Intl')) {
@@ -27,7 +27,7 @@ private function validateExtension(): bool
      *
      * @throws SpellNumberExceptions If the supplied value is not valid (not integer or float).
      */
-    private function validateNumeric(): bool
+    private function validateNumeric()
     {
         if (!Utilities::isValidNumber($this->value)) {
             throw SpellNumberExceptions::create('The supplied value is not valid. It must be of type integer or float (double).');
@@ -41,7 +41,7 @@ private function validateNumeric(): bool
      *
      * @throws SpellNumberExceptions If the supplied value is not a valid integer.
      */
-    private function validateInteger(): bool
+    private function validateInteger()
     {
         if (!Utilities::isValidInteger($this->value)) {
             throw SpellNumberExceptions::create('The supplied value is not valid. It must be of type integer.');
@@ -55,7 +55,7 @@ private function validateInteger(): bool
      *
      * @throws SpellNumberExceptions If the supplied value is not a valid string.
      */
-    private function validateString(): bool
+    private function validateString()
     {
         if (!Utilities::isValidString($this->value)) {
             throw SpellNumberExceptions::create('The supplied value is not valid. It must be of type String.');
@@ -69,7 +69,7 @@ private function validateString(): bool
      *
      * @throws SpellNumberExceptions If the entered value exceeds the maximum allowed value.
      */
-    private function validateMaximum(): bool
+    private function validateMaximum()
     {
         if (!Utilities::isNotExceedMax($this->value)) {
             throw SpellNumberExceptions::create('The value entered is too large and has been converted to scientific notation which prevents processing.');
@@ -83,7 +83,7 @@ private function validateMaximum(): bool
      *
      * @return string Returns "integer" if the value is a valid integer, otherwise "double".
      */
-    private function validateType(): string
+    private function validateType()
     {
         return Utilities::isValidInteger($this->value) ? 'integer' : 'double';
     }
diff --git a/src/Wrappers/NumberFormatterWrapper.php b/src/Wrappers/NumberFormatterWrapper.php
index 15f7b8b..ebdfd8f 100644
--- a/src/Wrappers/NumberFormatterWrapper.php
+++ b/src/Wrappers/NumberFormatterWrapper.php
@@ -19,7 +19,7 @@ final class NumberFormatterWrapper
      *
      * @return string|null The spelled-out representation of the number, or null on failure.
      */
-    public static function format(float|int $value, string $locale = null): ?string
+    public static function format(float|int $value, string $locale = null)
     {
         // If no locale is provided, use the default locale from the environment.
         $locale = $locale ?: Langs::getLocaleLaravel();