<?php

declare(strict_types=1);

namespace Rector\ValueObject;

final class PhpVersionFeature
{
    /**
     * @var string
     */
    public const SCALAR_TYPES = '7.0';

    /**
     * @var string
     */
    public const NULL_COALESCE = '7.0';

    /**
     * @var string
     */
    public const ITERABLE_TYPE = '7.0';

    /**
     * @var string
     */
    public const SPACESHIP = '7.0';

    /**
     * @var string
     */
    public const VOID_TYPE = '7.1';

    /**
     * @var string
     */
    public const OBJECT_TYPE = '7.2';

    /**
     * @var string
     */
    public const IS_COUNTABLE = '7.3';

    /**
     * @var string
     */
    public const ARROW_FUNCTION = '7.4';

    /**
     * @var string
     */
    public const LITERAL_SEPARATOR = '7.4';

    /**
     * @var string
     */
    public const NULL_COALESCE_ASSIGN = '7.4';

    /**
     * @var string
     */
    public const TYPED_PROPERTIES = '7.4';

    /**
     * @var string
     */
    public const BEFORE_UNION_TYPES = '7.4';

    /**
     * @var string
     */
    public const UNION_TYPES = '8.0';
}

<?php

declare(strict_types=1);

namespace Rector\ValueObject;

final class PhpVersionFeature
{
    /**
     * @var string
     */
    public const SCALAR_TYPES = '7.0';

    /**
     * @var string
     */
    public const NULL_COALESCE = '7.0';

    /**
     * @var string
     */
    public const SPACESHIP = '7.0';

    /**
     * @var string
     */
    public const ITERABLE_TYPE = '7.1';

    /**
     * @var string
     */
    public const VOID_TYPE = '7.1';

    /**
     * @var string
     */
    public const OBJECT_TYPE = '7.2';

    /**
     * @var string
     */
    public const IS_COUNTABLE = '7.3';

    /**
     * @var string
     */
    public const ARROW_FUNCTION = '7.4';

    /**
     * @var string
     */
    public const LITERAL_SEPARATOR = '7.4';

    /**
     * @var string
     */
    public const NULL_COALESCE_ASSIGN = '7.4';

    /**
     * @var string
     */
    public const TYPED_PROPERTIES = '7.4';

    /**
     * @var string
     */
    public const BEFORE_UNION_TYPES = '7.4';

    /**
     * @var string
     */
    public const UNION_TYPES = '8.0';
}

Fix - iterable type introduced in PHP 7.1
Fix - iterable type introduced in PHP 7.1
