https://www.egnyte.com/modules/contrib/lazy/js/lazy.js?v=10.6.14

1/**
2 * @file
3 * The Lazy-load behavior.
4 */
5
6((Drupal) => {
7  Drupal.behaviors.lazy = {
8    attach(context, settings) {
9      const utils = {
10        extend(obj, src) {
11          Object.keys(src).forEach((key) => {
12            obj[key] = src[key];
13          });
14          return obj;
15        },
16        once(selector) {
17          return (context || document).querySelector(selector);
18        },
19        loadScript(url) {
20          if (document.querySelectorAll(`script[src="${url}"]`).length === 0) {
21            const script = document.createElement('script');
22            const scripts = document.getElementsByTagName('script')[0];
23            script.src = url;
24            script.async = true;
25            scripts.parentNode.insertBefore(script, scripts);
26          }
27        },
28      };
29
30      if (utils.once('body', context)) {
31        const lazysizes = settings.lazy.lazysizes || {};
32
33        if (!settings.lazy.preferNative) {
34          // 1. Lazysizes configuration.
35          window.lazySizesConfig = window.lazySizesConfig || {};
36          window.lazySizesConfig = utils.extend(
37            window.lazySizesConfig,
38            lazysizes,
39          );
40          // 2. Load all selected lazysizes plugins.
41          if (!Object.entries) {
42            Object.entries = (obj) => {
43              const ownProps = Object.keys(obj);
44              let i = ownProps.length;
45              const resArray = new Array(i);
46              while (i--) {
47                resArray[i] = [ownProps[i], obj[ownProps[i]]];
48              }
49              return resArray;
50            };
51          }
52          const min = settings.lazy.minified ? '.min' : '';
53          Object.entries(lazysizes.plugins).forEach((path) => {
54            utils.loadScript(
55              `${settings.lazy.libraryPath}/plugins/${path[1]}${min}.js`,
56            );
57          });
58          // 3. Load the lazysizes library.
59          utils.loadScript(`${settings.lazy.libraryPath}/lazysizes${min}.js`);
60        }
61      }
62    },
63  };
64})(Drupal);