(function (w) {
  var feefoWidgetScript = document.createElement('script');
  feefoWidgetScript.setAttribute('async', 'async');
  feefoWidgetScript.setAttribute('src', '//register.feefo.com/feefo-widget/js/feefo-widget.js');
  feefoWidgetScript.setAttribute('type', 'text/javascript');
  feefoWidgetScript.onload = function () {
    if (typeof w.feefoWidgetInstance === 'undefined') {
      w.feefoWidgetInstance = feefoWidget({
        assetUrl: '//register.feefo.com/feefo-widget',
        debug: false,
        hosts: {
          api: 'api.feefo.com/api',
          widget: 'register.feefo.com',
          collector: 'collect.feefo.com'
        },
        merchantId: 'usborne',
        protocol: 'https',
        source: 'javascript',
        tags: '',
        externalCta: ''
      });
    }
  };
  document.head.appendChild(feefoWidgetScript);
})(window);