Contribute

Here is the commit that added support for Ukrainian language. Contribute another language is very simple. You need to make 3 steps:

Step 1. Translations

Add translations to resources/translations.php file. Here is the file:

return [
    // English
    'en' => [
        'thousand' => 'k',
        'million' => 'm',
        'billion' => 'b',
        'trillion' => 't',
    ],
    // Russian
    'ru' => [
        'thousand' => 'тыс',
        'million' => 'млн',
        'billion' => 'млд',
        'trillion' => 'трн',
    ],
    // add same for your language
];

Step 2. Tests

After adding another language, you need to add line to tests/TranslationsTest.php. The method runTestsForSuffixes(string $lang, string[] $suffixes) will generate tests for you. You just need to run ./vendor/bin/phpunit to make sure your translation works.

class TranslationsTest extends TestCase
{
    public function testing_correct_conversion(): void
    {
        $this->runTestsForSuffixes('en', ['k', 'm', 'b', 't']);
        $this->runTestsForSuffixes('ru', ['тыс', 'млн', 'млд', 'трн']);
        // add same line for your language here
    }
}

Step 3. README.md

Last step you need to add new language to README.md file under the section Supported languages.