--TEST--
"first" filter
--TEMPLATE--
{{ [1, 2, 3, 4]|first }}
{{ {a: 1, b: 2, c: 3, d: 4}|first }}
{{ '1234'|first }}
{{ arr|first }}
{{ 'Ä€é'|first }}
{{ ''|first }}
--DATA--
return ['arr' => new \ArrayObject([1, 2, 3, 4])]
--EXPECT--
1
1
1
1
Ä