Function getInnerHtmlProto

test/unit/polyfills/test-custom-elements.js:10–19

(win)

    let innerHTMLProto;

    function getInnerHtmlProto(win) {
      let innerHTMLProto = win.Element.prototype;
      if (!Object.getOwnPropertyDescriptor(innerHTMLProto, 'innerHTML')) {
        innerHTMLProto = win.HTMLElement.prototype;
        if (!Object.getOwnPropertyDescriptor(innerHTMLProto, 'innerHTML')) {
          return null;
        }
      }
      return innerHTMLProto;
    }

    before(function () {
      if (!getInnerHtmlProto(window)) {