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settings);\n\t\taddClass(element, settings.class_loading);\n\t}\n\tsetSources(element, settings);\n\tsetWasProcessedData(element);\n\tcallCallback(settings.callback_set, element);\n}\n\n/* entry.isIntersecting needs fallback because is null on some versions of MS Edge, and\n   entry.intersectionRatio is not enough alone because it could be 0 on some intersecting elements */\nconst isIntersecting = entry =>\n\tentry.isIntersecting || entry.intersectionRatio > 0;\n\nconst getObserverSettings = settings => ({\n\troot: settings.container === document ? null : settings.container,\n\trootMargin: settings.threshold + \"px\",\n\tthreshold: 0\n});\n\nconst LazyLoad = function(customSettings, elements) {\n\tthis._settings = getInstanceSettings(customSettings);\n\tthis._setObserver();\n\tthis.update(elements);\n};\n\nLazyLoad.prototype = {\n\t_manageIntersection: function(entry) {\n\t\tvar observer = this._observer;\n\t\tvar settings = this._settings;\n\t\tvar loadDelay = this._settings.load_delay;\n\t\tvar element = entry.target;\n\t\tif (isIntersecting(entry)) {\n\t\t\tif (!loadDelay) {\n\t\t\t\tloadAndUnobserve(element, observer, settings);\n\t\t\t} else {\n\t\t\t\tdelayLoad(element, observer, settings);\n\t\t\t}\n\t\t}\n\n\t\t// Writes in and outs in a data-attribute\n\t\tif (!isIntersecting(entry)) {\n\t\t\tcancelDelayLoad(element);\n\t\t}\n\t},\n\t_onIntersection: function(entries) {\n\t\tentries.forEach(this._manageIntersection.bind(this));\n\t\tthis._elements = purgeElements(this._elements);\n\t},\n\t_setObserver: function() {\n\t\tif (!supportsIntersectionObserver) {\n\t\t\treturn;\n\t\t}\n\t\tthis._observer = new IntersectionObserver(\n\t\t\tthis._onIntersection.bind(this),\n\t\t\tgetObserverSettings(this._settings)\n\t\t);\n\t},\n\n\tloadAll: function() {\n\t\tthis._elements.forEach(element => {\n\t\t\tthis.load(element);\n\t\t});\n\t\tthis._elements = purgeElements(this._elements);\n\t},\n\n\tupdate: function(elements) {\n\t\tconst settings = this._settings;\n\t\tconst nodeSet =\n\t\t\telements ||\n\t\t\tsettings.container.querySelectorAll(settings.elements_selector);\n\n\t\tthis._elements = purgeElements(Array.prototype.slice.call(nodeSet)); // nodeset to array for IE compatibility\n\n\t\tif (isBot || !this._observer) {\n\t\t\tthis.loadAll();\n\t\t\treturn;\n\t\t}\n\n\t\tthis._elements.forEach(element => {\n\t\t\tthis._observer.observe(element);\n\t\t});\n\t},\n\n\tdestroy: function() {\n\t\tif (this._observer) {\n\t\t\tpurgeElements(this._elements).forEach(element => {\n\t\t\t\tthis._observer.unobserve(element);\n\t\t\t});\n\t\t\tthis._observer = null;\n\t\t}\n\t\tthis._elements = null;\n\t\tthis._settings = null;\n\t},\n\n\tload: function(element, force) {\n\t\trevealElement(element, this._settings, force);\n\t}\n};\n\n/* Automatic instances creation if required (useful for async script loading) */\nif (runningOnBrowser) {\n\tautoInitialize(LazyLoad, window.lazyLoadOptions);\n}\n\nreturn LazyLoad;\n\n})));\n"]}