A hook to use the barryvdh/laravel-ide-helper in combination with the spatie/laravel-translatable package

ide-helper.php

[...]
    /*
    |--------------------------------------------------------------------------
    | Models hooks
    |--------------------------------------------------------------------------
    |
    | Define which hook classes you want to run for models to add custom information
    |
    | Hooks should implement Barryvdh\LaravelIdeHelper\Contracts\ModelHookInterface.
    |
    */

    'model_hooks' => [
         App\Support\TranslatableModelIdeHelperHook::class,
    ],
[...]

TranslatableModelIdeHelperHook.php

<?php

namespace App\Support;

use Barryvdh\LaravelIdeHelper\Console\ModelsCommand;
use Barryvdh\LaravelIdeHelper\Contracts\ModelHookInterface;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Arr;
use ReflectionClass;
use Spatie\Translatable\HasTranslations;

/**
 * This hook helps to fix typings for translatable attributes on models.
 *
 * For more information, see this thread: https://github.com/spatie/laravel-translatable/discussions/365
 */
class TranslatableModelIdeHelperHook implements ModelHookInterface
{
    public function run(ModelsCommand $command, Model $model): void
    {
        if (!in_array(HasTranslations::class, class_uses_recursive($model))) {
            return;
        }

        // @phpstan-ignore-next-line
        foreach ($model->getTranslatableAttributes() as $attribute) {
            $types = ['array', 'string'];

            $nullableColumns = $this->getNullableColumns($command);

            if (Arr::get($nullableColumns, $attribute, false)) {
                $types[] = 'null';
            }

            $command->setProperty($attribute, implode('|', $types));
        }
    }

    protected function getNullableColumns(ModelsCommand $command): array
    {
        return $this->getProtectedProperty($command, 'nullableColumns');
    }

    protected function getProtectedProperty(object|string $obj, string $prop): mixed
    {
        $reflection = new ReflectionClass($obj);
        $property = $reflection->getProperty($prop);

        return $property->getValue($obj);
    }
}