Issue #3084673 by osman: Internet Explorer compatibility

        window.lazySizesConfig = window.lazySizesConfig || {};

        window.lazySizesConfig = utils.extend(window.lazySizesConfig, lazysizes);

        // 2. Load all selected lazysizes plugins.

        Object.entries(lazysizes.plugins).forEach(function ([key, path]) {

          utils.loadScript(Drupal.url(`libraries/lazysizes/plugins/${path}.min.js`));

        if (!Object.entries) {

          Object.entries = function(obj) {

            var ownProps = Object.keys(obj),

              i = ownProps.length,

              resArray = new Array(i);

            while (i--) {

              resArray[i] = [ownProps[i], obj[ownProps[i]]];

            }

            return resArray;

          };

        }

        Object.entries(lazysizes.plugins).forEach(function (path, key) {

          utils.loadScript(Drupal.url('libraries/lazysizes/plugins/' + path[1] + '.min.js'));

        });

        // 3. Load the lazysizes library.

        utils.loadScript(Drupal.url('libraries/lazysizes/lazysizes.min.js'));