vanilla-lazyload/dist/lazyload.amd.min.js

A fast, lightweight script to load images as they enter the viewport. SEO friendly, it supports responsive images (both srcset + sizes and picture) and progressive JPEG

var _extends=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n=arguments[e];for(var i in n)Object.prototype.hasOwnProperty.call(n,i)&&(t[i]=n[i])}return t};define(function(){"use strict";function t(t,e,n){return!(u(t,e,n)||f(t,e,n)||_(t,e,n)||h(t,e,n))}function e(t,e,n){var i=e._settings;!n&&r(t)||(C(i.callback_enter,t),x.indexOf(t.tagName)>-1&&(R(t,e),E(t,i.class_loading)),H(t,e),s(t),C(i.callback_set,t))}var n=function(){return{elements_selector:"img",container:window,threshold:300,throttle:150,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",class_loading:"loading",class_loaded:"loaded",class_error:"error",class_initial:"initial",skip_invisible:!0,callback_load:null,callback_error:null,callback_set:null,callback_enter:null,callback_finish:null,to_webp:!1}},i=function(t,e){return t.getAttribute("data-"+e)},o=function(t,e,n){var i="data-"+e;null!==n?t.setAttribute(i,n):t.removeAttribute(i)},s=function(t){return o(t,"was-processed","true")},r=function(t){return"true"===i(t,"was-processed")},l=function(t){return t.filter(function(t){return!r(t)})},a=function(t,e){return t.filter(function(t){return t!==e})},c=function(t){return t.getBoundingClientRect().top+window.pageYOffset-t.ownerDocument.documentElement.clientTop},u=function(t,e,n){return(e===window?window.innerHeight+window.pageYOffset:c(e)+e.offsetHeight)<=c(t)-n},d=function(t){return t.getBoundingClientRect().left+window.pageXOffset-t.ownerDocument.documentElement.clientLeft},_=function(t,e,n){var i=window.innerWidth;return(e===window?i+window.pageXOffset:d(e)+i)<=d(t)-n},f=function(t,e,n){return(e===window?window.pageYOffset:c(e))>=c(t)+n+t.offsetHeight},h=function(t,e,n){return(e===window?window.pageXOffset:d(e))>=d(t)+n+t.offsetWidth},g=function(t,e){var n,i=new t(e);try{n=new CustomEvent("LazyLoad::Initialized",{detail:{instance:i}})}catch(t){(n=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:i})}window.dispatchEvent(n)},p=function(t,e){return e?t.replace(/\.(jpe?g|png)/gi,".webp"):t},m="undefined"!=typeof window,w=m&&!("onscroll"in window)||/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),v=m&&"classList"in document.createElement("p"),b=m&&function(){var t=document.createElement("canvas");return!(!t.getContext||!t.getContext("2d"))&&0===t.toDataURL("image/webp").indexOf("data:image/webp")}(),E=function(t,e){v?t.classList.add(e):t.className+=(t.className?" 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