twig.contains works wrong

[apsavin]

If we have in file.twig code like this:

{% set myVar = '1' %}
{% set myArray = [1, 2] %}
{% if myVar in myArray %} 1 {% else %} 2 {% endif %}

then result is '1' with php
but '2' with js.
It's so, because the way how twig.contains works:

$goog$exportSymbol$$("twig.contains", function($haystack$$, $needle$$) {
        var $JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$;
        if($goog$isArray$$($haystack$$)) {
// incorrect way, strict eq (through indexOf)
            $JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$ = 0 <= $goog$array$indexOf$$($haystack$$, $needle$$)
        }else {
            if($goog$isString$$($haystack$$)) {
                $JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$ = -1 != $haystack$$.indexOf($needle$$) && ("" !== $needle$$ || "" === $haystack$$)
            }else {
                a: {
                    for($JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$ in $haystack$$) {
// correct way, non-strict eq '=='
                        if($haystack$$[$JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$] == $needle$$) {
                            $JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$ = $JSCompiler_alias_TRUE$$;
                            break a
                        }
                    }
                    $JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$ = $JSCompiler_alias_FALSE$$
                }
            }
        }
        return $JSCompiler_temp$$159_JSCompiler_temp$$160_key$$inline_169$$
    });