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	diff --git a/src/Collections/TraversableUtilities.php b/src/Collections/TraversableUtilities.php
	index 8d7921c..5877919 100644
	--- a/src/Collections/TraversableUtilities.php
	+++ b/src/Collections/TraversableUtilities.php
	@@ -1,27 +1,33 @@
	<?php
	declare(strict_types=1);

	namespace Keruald\OmniTools\Collections;

	use Countable;
	+use ResourceBundle;
	+use SimpleXMLElement;
	use TypeError;

	class TraversableUtilities {

	public static function count ($countable) : int {
	- if (is_array($countable)) {
	+ if (self::isCountable($countable)) {
	return count($countable);
	}

	- if ($countable instanceof Countable) {
	- return $countable->count();
	- }
	-
	if ($countable === null \|\| $countable === false) {
	return 0;
	}

	throw new TypeError;
	}

	+ public static function isCountable ($countable) : bool {
	+ // https://github.com/Ayesh/is_countable-polyfill/blob/master/src/is_countable.php
	+ return is_array($countable)
	+ \|\| $countable instanceof Countable
	+ \|\| $countable instanceof SimpleXMLElement
	+ \|\| $countable instanceof ResourceBundle;
	+ }
	+
	}