16-4e65c8ff0441e3a15274.js

(window.webpackJsonp=window.webpackJsonp||[]).push([[16],{144:function(t,e){!function(){"use strict";if("object"==typeof window)if("IntersectionObserver"in window&&"IntersectionObserverEntry"in window&&"intersectionRatio"in window.IntersectionObserverEntry.prototype)"isIntersecting"in window.IntersectionObserverEntry.prototype||Object.defineProperty(window.IntersectionObserverEntry.prototype,"isIntersecting",{get:function(){return this.intersectionRatio>0}});else{var t=window.document,e=[];o.prototype.THROTTLE_TIMEOUT=100,o.prototype.POLL_INTERVAL=null,o.prototype.USE_MUTATION_OBSERVER=!0,o.prototype.observe=function(t){if(!this._observationTargets.some(function(e){return e.element==t})){if(!t||1!=t.nodeType)throw new Error("target must be an 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n({time:window.performance&&performance.now&&performance.now(),target:i,boundingClientRect:r,rootBounds:e,intersectionRect:a});c?t&&h?this._hasCrossedThreshold(c,u)&&this._queuedEntries.push(u):c&&c.isIntersecting&&this._queuedEntries.push(u):this._queuedEntries.push(u)},this),this._queuedEntries.length&&this._callback(this.takeRecords(),this)},o.prototype._computeTargetAndRootIntersection=function(e,n){if("none"!=window.getComputedStyle(e).display){for(var o,i,r,h,a,u,d,p,l=s(e),f=c(e),g=!1;!g;){var _=null,v=1==f.nodeType?window.getComputedStyle(f):{};if("none"==v.display)return;if(f==this.root||f==t?(g=!0,_=n):f!=t.body&&f!=t.documentElement&&"visible"!=v.overflow&&(_=s(f)),_&&(o=_,i=l,r=void 0,h=void 0,a=void 0,u=void 0,d=void 0,p=void 0,r=Math.max(o.top,i.top),h=Math.min(o.bottom,i.bottom),a=Math.max(o.left,i.left),u=Math.min(o.right,i.right),p=h-r,!(l=(d=u-a)>=0&&p>=0&&{top:r,bottom:h,left:a,right:u,width:d,height:p})))break;f=c(f)}return l}},o.prototype._getRootRect=function(){var e;if(this.root)e=s(this.root);else{var n=t.documentElement,o=t.body;e={top:0,left:0,right:n.clientWidth||o.clientWidth,width:n.clientWidth||o.clientWidth,bottom:n.clientHeight||o.clientHeight,height:n.clientHeight||o.clientHeight}}return this._expandRectByRootMargin(e)},o.prototype._expandRectByRootMargin=function(t){var e=this._rootMarginValues.map(function(e,n){return"px"==e.unit?e.value:e.value*(n%2?t.width:t.height)/100}),n={top:t.top-e[0],right:t.right+e[1],bottom:t.bottom+e[2],left:t.left-e[3]};return n.width=n.right-n.left,n.height=n.bottom-n.top,n},o.prototype._hasCrossedThreshold=function(t,e){var n=t&&t.isIntersecting?t.intersectionRatio||0:-1,o=e.isIntersecting?e.intersectionRatio||0:-1;if(n!==o)for(var i=0;i<this.thresholds.length;i++){var r=this.thresholds[i];if(r==n||r==o||r<n!=r<o)return!0}},o.prototype._rootIsInDom=function(){return!this.root||h(t,this.root)},o.prototype._rootContainsTarget=function(e){return h(this.root||t,e)},o.prototype._registerInstance=function(){e.indexOf(this)<0&&e.push(this)},o.prototype._unregisterInstance=function(){var t=e.indexOf(this);-1!=t&&e.splice(t,1)},window.IntersectionObserver=o,window.IntersectionObserverEntry=n}function n(t){this.time=t.time,this.target=t.target,this.rootBounds=t.rootBounds,this.boundingClientRect=t.boundingClientRect,this.intersectionRect=t.intersectionRect||{top:0,bottom:0,left:0,right:0,width:0,height:0},this.isIntersecting=!!t.intersectionRect;var e=this.boundingClientRect,n=e.width*e.height,o=this.intersectionRect,i=o.width*o.height;this.intersectionRatio=n?Number((i/n).toFixed(4)):this.isIntersecting?1:0}function o(t,e){var n,o,i,r=e||{};if("function"!=typeof t)throw new Error("callback must be a function");if(r.root&&1!=r.root.nodeType)throw new Error("root must be an 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