player/js/utils/featureSupport.js

const featureSupport = (function () {
  var ob = {
    maskType: true,
    svgLumaHidden: true,
    offscreenCanvas: typeof OffscreenCanvas !== 'undefined',
  };
  if (/MSIE 10/i.test(navigator.userAgent) || /MSIE 9/i.test(navigator.userAgent) || /rv:11.0/i.test(navigator.userAgent) || /Edge\/\d./i.test(navigator.userAgent)) {
    ob.maskType = false;
  }
  if (/firefox/i.test(navigator.userAgent)) {
    ob.svgLumaHidden = false;
  }
  return ob;
}());

export default featureSupport;