[bahramsadin]

The verta() helper in src/helpers.php documents both parameters as accepting only null:

/**
 * @param null $datetime
 * @param null $timezone
 * @return Verta
 */
function verta($datetime = null, $timezone = null): Verta

This doesn't match reality — the function just forwards to new Verta($datetime, $timezone), and Verta extends Jalali, whose constructor (and its own resolve() docblock) accepts Jalali|DateTime|string|int|null for the datetime and DateTimeZone|string|null for the timezone. Calling verta($someDateString) or verta($carbonInstance) works fine at runtime, but the incorrect docblock makes static analysis tools (PHPStan/Larastan) flag every call site that passes an actual datetime value as a type error, even though the code is correct.