aurelia-pal-browser/src/element-matches.js

The browser-specific implementation of Aurelia's platform abstraction layer.

if (Element && !Element.prototype.matches) {
  let proto = Element.prototype;
  proto.matches = proto.matchesSelector ||
    proto.mozMatchesSelector || proto.msMatchesSelector ||
    proto.oMatchesSelector || proto.webkitMatchesSelector;
}