WordPress/wp-includes/js/dist/vendor/wp-polyfill-element-closest.min.js

!function(e){"function"!=typeof e.matches&&(e.matches=e.msMatchesSelector||e.mozMatchesSelector||e.webkitMatchesSelector||function(e){for(var t=this,o=(t.document||t.ownerDocument).querySelectorAll(e),n=0;o[n]&&o[n]!==t;)++n;return Boolean(o[n])}),"function"!=typeof e.closest&&(e.closest=function(e){for(var t=this;t&&1===t.nodeType;){if(t.matches(e))return t;t=t.parentNode}return null})}(window.Element.prototype);