1#@!#!123s

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Filename : closestPolyfill.js

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if (!Element.prototype.matches) {
    Element.prototype.matches = Element.prototype.msMatchesSelector ||
        Element.prototype.webkitMatchesSelector;
}

if (!Element.prototype.closest) {
    Element.prototype.closest = function(s) {
        var el = this;
        do {
            if (Element.prototype.matches.call(el, s)) return el;
            el = el.parentElement || el.parentNode;
        } while (el !== null && el.nodeType === 1);
        return null;
    };
}