Function l has a Cognitive Complexity of 274 (exceeds 5 allowed). Consider refactoring.

Open

}(window, function l(window, document) {
    'use strict';
    /*jshint eqnull:true */
    if(!document.getElementsByClassName){return;}

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Function l has 535 lines of code (exceeds 25 allowed). Consider refactoring.

Open

}(window, function l(window, document) {
    'use strict';
    /*jshint eqnull:true */
    if(!document.getElementsByClassName){return;}

File lazysizes-0622dd876a33cdbe06d2c1c01c3e3b9a8ca531f3c3c3ec27639622d535ceeec0.js has 642 lines of code (exceeds 250 allowed). Consider refactoring.

Open

(function(window, factory) {
    var lazySizes = factory(window, window.document);
    window.lazySizes = lazySizes;
    if(typeof module == 'object' && module.exports){
        module.exports = lazySizes;

Function loader has 250 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    var loader = (function(){
        var preloadElems, isCompleted, resetPreloadingTimer, loadMode, started;

        var eLvW, elvH, eLtop, eLleft, eLright, eLbottom;

Consider simplifying this complex logical expression.

Open

                    } else if(!loadedSomething && isCompleted && !autoLoadElem &&
                        isLoading < 4 && lowRuns < 4 && loadMode > 2 &&
                        (preloadElems[0] || lazySizesConfig.preloadAfterLoad) &&
                        (preloadElems[0] || (!elemExpandVal && ((eLbottom || eLright || eLleft || eLtop) || lazyloadElems[i][_getAttribute](lazySizesConfig.sizesAttr) != 'auto')))){
                        autoLoadElem = preloadElems[0] || lazyloadElems[i];

Consider simplifying this complex logical expression.

Open

                    if ((eLbottom = rect.bottom) >= elemNegativeExpand &&
                        (eLtop = rect.top) <= elvH &&
                        (eLright = rect.right) >= elemNegativeExpand * hFac &&
                        (eLleft = rect.left) <= eLvW &&
                        (eLbottom || eLright || eLleft || eLtop) &&

Function lazyUnveil has 54 lines of code (exceeds 25 allowed). Consider refactoring.

Open

        var lazyUnveil = rAFIt(function (elem, detail, isAuto, sizes, isImg){
            var src, srcset, parent, isPicture, event, firesLoad;

            if(!(event = triggerEvent(elem, 'lazybeforeunveil', detail)).defaultPrevented){

Function checkElements has 54 lines of code (exceeds 25 allowed). Consider refactoring.

Open

        var checkElements = function() {
            var eLlen, i, rect, autoLoadElem, loadedSomething, elemExpand, elemNegativeExpand, elemExpandVal, beforeExpandVal;

            var lazyloadElems = lazysizes.elements;

Function autoSizer has 49 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    var autoSizer = (function(){
        var autosizesElems;

        var sizeElement = rAFIt(function(elem, parent, event, width){
            var sources, i, len;

Function throttle has 39 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    var throttle = function(fn){
        var running;
        var lastTime = 0;
        var gDelay = lazySizesConfig.throttleDelay;
        var rICTimeout = lazySizesConfig.ricTimeout;

Consider simplifying this complex logical expression.

Open

            if( (isAuto || !isCompleted) && isImg && (elem[_getAttribute]('src') || elem.srcset) && !elem.complete && !hasClass(elem, lazySizesConfig.errorClass) && hasClass(elem, lazySizesConfig.lazyClass)){return;}

Function _ has 30 lines of code (exceeds 25 allowed). Consider refactoring.

Open

            _: function(){
                started = Date.now();

                lazysizes.elements = document.getElementsByClassName(lazySizesConfig.lazyClass);
                preloadElems = document.getElementsByClassName(lazySizesConfig.lazyClass + ' ' + lazySizesConfig.preloadClass);

Function rAF has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    var rAF = (function(){
        var running, waiting;
        var firstFns = [];
        var secondFns = [];
        var fns = firstFns;

Function lazyUnveil has 5 arguments (exceeds 4 allowed). Consider refactoring.

Open

        var lazyUnveil = rAFIt(function (elem, detail, isAuto, sizes, isImg){

Function triggerEvent has 5 arguments (exceeds 4 allowed). Consider refactoring.

Open

    var triggerEvent = function(elem, name, detail, noBubbles, noCancelable){