From e464d8abaddc3490a9d8522147c6b790e53b941d Mon Sep 17 00:00:00 2001
From: Andrea Verlicchi <andrea.verlicchi@gmail.com>
Date: Thu, 29 Mar 2018 23:01:25 +0200
Subject: [PATCH] Releasing 8.7.1

---
 dist/lazyload.es2015.js    | 2 +-
 dist/lazyload.js           | 2 +-
 dist/lazyload.min.js       | 2 +-
 package.json               | 2 +-
 src/lazyload.setSources.js | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/dist/lazyload.es2015.js b/dist/lazyload.es2015.js
index 2ff9241f..0a4f9bf6 100644
--- a/dist/lazyload.es2015.js
+++ b/dist/lazyload.es2015.js
@@ -114,7 +114,7 @@ const setData = (element, attribute, value) => {
 
 const setSourcesForPicture = function (element, srcsetDataAttribute) {
     const parent = element.parentNode;
-    if (parent.tagName !== "PICTURE") {
+    if (parent && parent.tagName !== "PICTURE") {
         return;
     }
     for (let i = 0; i < parent.children.length; i++) {
diff --git a/dist/lazyload.js b/dist/lazyload.js
index 38931b98..23104907 100644
--- a/dist/lazyload.js
+++ b/dist/lazyload.js
@@ -112,7 +112,7 @@ var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol
 
     var setSourcesForPicture = function setSourcesForPicture(element, srcsetDataAttribute) {
         var parent = element.parentNode;
-        if (parent.tagName !== "PICTURE") {
+        if (parent && parent.tagName !== "PICTURE") {
             return;
         }
         for (var i = 0; i < parent.children.length; i++) {
diff --git a/dist/lazyload.min.js b/dist/lazyload.min.js
index 14777b43..d184f972 100644
--- a/dist/lazyload.min.js
+++ b/dist/lazyload.min.js
@@ -1 +1 @@
-var _extends=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var n=arguments[t];for(var o in n)Object.prototype.hasOwnProperty.call(n,o)&&(e[o]=n[o])}return e},_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e};!function(e,t){"object"===("undefined"==typeof exports?"undefined":_typeof(exports))&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.LazyLoad=t()}(this,function(){"use strict";var e=function(){return{elements_selector:"img",container:window,threshold:300,throttle:150,data_src:"src",data_srcset:"srcset",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_processed:null,callback_enter:null}},t=!("onscroll"in window)||/glebot/.test(navigator.userAgent),n=function(e,t){e&&e(t)},o=function(e){return e.getBoundingClientRect().top+window.pageYOffset-e.ownerDocument.documentElement.clientTop},i=function(e,t,n){return(t===window?window.innerHeight+window.pageYOffset:o(t)+t.offsetHeight)<=o(e)-n},s=function(e){return e.getBoundingClientRect().left+window.pageXOffset-e.ownerDocument.documentElement.clientLeft},r=function(e,t,n){var o=window.innerWidth;return(t===window?o+window.pageXOffset:s(t)+o)<=s(e)-n},l=function(e,t,n){return(t===window?window.pageYOffset:o(t))>=o(e)+n+e.offsetHeight},a=function(e,t,n){return(t===window?window.pageXOffset:s(t))>=s(e)+n+e.offsetWidth},c=function(e,t,n){return!(i(e,t,n)||l(e,t,n)||r(e,t,n)||a(e,t,n))},u=function(e,t){var n,o=new e(t);try{n=new CustomEvent("LazyLoad::Initialized",{detail:{instance:o}})}catch(e){(n=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:o})}window.dispatchEvent(n)},d=function(e,t){return e.getAttribute("data-"+t)},h=function(e,t,n){return e.setAttribute("data-"+t,n)},f=function(e,t){var n=e.parentNode;if("PICTURE"===n.tagName)for(var o=0;o<n.children.length;o++){var i=n.children[o];if("SOURCE"===i.tagName){var s=d(i,t);s&&i.setAttribute("srcset",s)}}},_=function(e,t,n){var o=e.tagName,i=d(e,n);if("IMG"===o){f(e,t);var s=d(e,t);return s&&e.setAttribute("srcset",s),void(i&&e.setAttribute("src",i))}"IFRAME"!==o?i&&(e.style.backgroundImage='url("'+i+'")'):i&&e.setAttribute("src",i)},p="undefined"!=typeof window,m=p&&"classList"in document.createElement("p"),g=function(e,t){m?e.classList.add(t):e.className+=(e.className?" ":"")+t},v=function(e,t){m?e.classList.remove(t):e.className=e.className.replace(new RegExp("(^|\\s+)"+t+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},w=function(t){this._settings=_extends({},e(),t),this._queryOriginNode=this._settings.container===window?document:this._settings.container,this._previousLoopTime=0,this._loopTimeout=null,this._boundHandleScroll=this.handleScroll.bind(this),this._isFirstLoop=!0,window.addEventListener("resize",this._boundHandleScroll),this.update()};w.prototype={_reveal:function(e){var t=this._settings,o=function o(){t&&(e.removeEventListener("load",i),e.removeEventListener("error",o),v(e,t.class_loading),g(e,t.class_error),n(t.callback_error,e))},i=function i(){t&&(v(e,t.class_loading),g(e,t.class_loaded),e.removeEventListener("load",i),e.removeEventListener("error",o),n(t.callback_load,e))};n(t.callback_enter,e),"IMG"!==e.tagName&&"IFRAME"!==e.tagName||(e.addEventListener("load",i),e.addEventListener("error",o),g(e,t.class_loading)),_(e,t.data_srcset,t.data_src),n(t.callback_set,e)},_loopThroughElements:function(){var e=this._settings,o=this._elements,i=o?o.length:0,s=void 0,r=[],l=this._isFirstLoop;for(s=0;s<i;s++){var a=o[s];e.skip_invisible&&null===a.offsetParent||(t||c(a,e.container,e.threshold))&&(l&&g(a,e.class_initial),this._reveal(a),r.push(s),h(a,"was-processed",!0))}for(;r.length;)o.splice(r.pop(),1),n(e.callback_processed,o.length);0===i&&this._stopScrollHandler(),l&&(this._isFirstLoop=!1)},_purgeElements:function(){var e=this._elements,t=e.length,n=void 0,o=[];for(n=0;n<t;n++){var i=e[n];d(i,"was-processed")&&o.push(n)}for(;o.length>0;)e.splice(o.pop(),1)},_startScrollHandler:function(){this._isHandlingScroll||(this._isHandlingScroll=!0,this._settings.container.addEventListener("scroll",this._boundHandleScroll))},_stopScrollHandler:function(){this._isHandlingScroll&&(this._isHandlingScroll=!1,this._settings.container.removeEventListener("scroll",this._boundHandleScroll))},handleScroll:function(){var e=this._settings.throttle;if(0!==e){var t=Date.now(),n=e-(t-this._previousLoopTime);n<=0||n>e?(this._loopTimeout&&(clearTimeout(this._loopTimeout),this._loopTimeout=null),this._previousLoopTime=t,this._loopThroughElements()):this._loopTimeout||(this._loopTimeout=setTimeout(function(){this._previousLoopTime=Date.now(),this._loopTimeout=null,this._loopThroughElements()}.bind(this),n))}else this._loopThroughElements()},update:function(){this._elements=Array.prototype.slice.call(this._queryOriginNode.querySelectorAll(this._settings.elements_selector)),this._purgeElements(),this._loopThroughElements(),this._startScrollHandler()},destroy:function(){window.removeEventListener("resize",this._boundHandleScroll),this._loopTimeout&&(clearTimeout(this._loopTimeout),this._loopTimeout=null),this._stopScrollHandler(),this._elements=null,this._queryOriginNode=null,this._settings=null}};var b=window.lazyLoadOptions;return p&&b&&function(e,t){var n=t.length;if(n)for(var o=0;o<n;o++)u(e,t[o]);else u(e,t)}(w,b),w});
\ No newline at end of file
+var _extends=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var n=arguments[t];for(var o in n)Object.prototype.hasOwnProperty.call(n,o)&&(e[o]=n[o])}return e},_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e};!function(e,t){"object"===("undefined"==typeof exports?"undefined":_typeof(exports))&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.LazyLoad=t()}(this,function(){"use strict";var e=function(){return{elements_selector:"img",container:window,threshold:300,throttle:150,data_src:"src",data_srcset:"srcset",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_processed:null,callback_enter:null}},t=!("onscroll"in window)||/glebot/.test(navigator.userAgent),n=function(e,t){e&&e(t)},o=function(e){return e.getBoundingClientRect().top+window.pageYOffset-e.ownerDocument.documentElement.clientTop},i=function(e,t,n){return(t===window?window.innerHeight+window.pageYOffset:o(t)+t.offsetHeight)<=o(e)-n},s=function(e){return e.getBoundingClientRect().left+window.pageXOffset-e.ownerDocument.documentElement.clientLeft},r=function(e,t,n){var o=window.innerWidth;return(t===window?o+window.pageXOffset:s(t)+o)<=s(e)-n},l=function(e,t,n){return(t===window?window.pageYOffset:o(t))>=o(e)+n+e.offsetHeight},a=function(e,t,n){return(t===window?window.pageXOffset:s(t))>=s(e)+n+e.offsetWidth},c=function(e,t,n){return!(i(e,t,n)||l(e,t,n)||r(e,t,n)||a(e,t,n))},u=function(e,t){var n,o=new e(t);try{n=new CustomEvent("LazyLoad::Initialized",{detail:{instance:o}})}catch(e){(n=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:o})}window.dispatchEvent(n)},d=function(e,t){return e.getAttribute("data-"+t)},h=function(e,t,n){return e.setAttribute("data-"+t,n)},f=function(e,t){var n=e.parentNode;if(!n||"PICTURE"===n.tagName)for(var o=0;o<n.children.length;o++){var i=n.children[o];if("SOURCE"===i.tagName){var s=d(i,t);s&&i.setAttribute("srcset",s)}}},_=function(e,t,n){var o=e.tagName,i=d(e,n);if("IMG"===o){f(e,t);var s=d(e,t);return s&&e.setAttribute("srcset",s),void(i&&e.setAttribute("src",i))}"IFRAME"!==o?i&&(e.style.backgroundImage='url("'+i+'")'):i&&e.setAttribute("src",i)},p="undefined"!=typeof window,m=p&&"classList"in document.createElement("p"),g=function(e,t){m?e.classList.add(t):e.className+=(e.className?" ":"")+t},v=function(e,t){m?e.classList.remove(t):e.className=e.className.replace(new RegExp("(^|\\s+)"+t+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},w=function(t){this._settings=_extends({},e(),t),this._queryOriginNode=this._settings.container===window?document:this._settings.container,this._previousLoopTime=0,this._loopTimeout=null,this._boundHandleScroll=this.handleScroll.bind(this),this._isFirstLoop=!0,window.addEventListener("resize",this._boundHandleScroll),this.update()};w.prototype={_reveal:function(e){var t=this._settings,o=function o(){t&&(e.removeEventListener("load",i),e.removeEventListener("error",o),v(e,t.class_loading),g(e,t.class_error),n(t.callback_error,e))},i=function i(){t&&(v(e,t.class_loading),g(e,t.class_loaded),e.removeEventListener("load",i),e.removeEventListener("error",o),n(t.callback_load,e))};n(t.callback_enter,e),"IMG"!==e.tagName&&"IFRAME"!==e.tagName||(e.addEventListener("load",i),e.addEventListener("error",o),g(e,t.class_loading)),_(e,t.data_srcset,t.data_src),n(t.callback_set,e)},_loopThroughElements:function(){var e=this._settings,o=this._elements,i=o?o.length:0,s=void 0,r=[],l=this._isFirstLoop;for(s=0;s<i;s++){var a=o[s];e.skip_invisible&&null===a.offsetParent||(t||c(a,e.container,e.threshold))&&(l&&g(a,e.class_initial),this._reveal(a),r.push(s),h(a,"was-processed",!0))}for(;r.length;)o.splice(r.pop(),1),n(e.callback_processed,o.length);0===i&&this._stopScrollHandler(),l&&(this._isFirstLoop=!1)},_purgeElements:function(){var e=this._elements,t=e.length,n=void 0,o=[];for(n=0;n<t;n++){var i=e[n];d(i,"was-processed")&&o.push(n)}for(;o.length>0;)e.splice(o.pop(),1)},_startScrollHandler:function(){this._isHandlingScroll||(this._isHandlingScroll=!0,this._settings.container.addEventListener("scroll",this._boundHandleScroll))},_stopScrollHandler:function(){this._isHandlingScroll&&(this._isHandlingScroll=!1,this._settings.container.removeEventListener("scroll",this._boundHandleScroll))},handleScroll:function(){var e=this._settings.throttle;if(0!==e){var t=Date.now(),n=e-(t-this._previousLoopTime);n<=0||n>e?(this._loopTimeout&&(clearTimeout(this._loopTimeout),this._loopTimeout=null),this._previousLoopTime=t,this._loopThroughElements()):this._loopTimeout||(this._loopTimeout=setTimeout(function(){this._previousLoopTime=Date.now(),this._loopTimeout=null,this._loopThroughElements()}.bind(this),n))}else this._loopThroughElements()},update:function(){this._elements=Array.prototype.slice.call(this._queryOriginNode.querySelectorAll(this._settings.elements_selector)),this._purgeElements(),this._loopThroughElements(),this._startScrollHandler()},destroy:function(){window.removeEventListener("resize",this._boundHandleScroll),this._loopTimeout&&(clearTimeout(this._loopTimeout),this._loopTimeout=null),this._stopScrollHandler(),this._elements=null,this._queryOriginNode=null,this._settings=null}};var b=window.lazyLoadOptions;return p&&b&&function(e,t){var n=t.length;if(n)for(var o=0;o<n;o++)u(e,t[o]);else u(e,t)}(w,b),w});
\ No newline at end of file
diff --git a/package.json b/package.json
index d1f9b4df..30e01a8d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vanilla-lazyload",
-  "version": "8.7.0",
+  "version": "8.7.1",
   "description": "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",
   "main": "dist/lazyload.min.js",
   "devDependencies": {
diff --git a/src/lazyload.setSources.js b/src/lazyload.setSources.js
index b19172ef..f14367cd 100644
--- a/src/lazyload.setSources.js
+++ b/src/lazyload.setSources.js
@@ -2,7 +2,7 @@ import {getData} from "./lazyload.data";
 
 const setSourcesForPicture = function (element, srcsetDataAttribute) {
     const parent = element.parentNode;
-    if (parent.tagName !== "PICTURE") {
+    if (parent && parent.tagName !== "PICTURE") {
         return;
     }
     for (let i = 0; i < parent.children.length; i++) {