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e=this._rootIsInDom(),n=e?this._getRootRect():{top:0,bottom:0,left:0,right:0,width:0,height:0};this._observationTargets.forEach((function(o){var r=o.element,s=h(r),c=this._rootContainsTarget(r),u=o.entry,a=e&&c&&this._computeTargetAndRootIntersection(r,n),l=o.entry=new i({time:t.performance&&performance.now&&performance.now(),target:r,boundingClientRect:s,rootBounds:n,intersectionRect:a});u?e&&c?this._hasCrossedThreshold(u,l)&&this._queuedEntries.push(l):u&&u.isIntersecting&&this._queuedEntries.push(l):this._queuedEntries.push(l)}),this),this._queuedEntries.length&&this._callback(this.takeRecords(),this)},o.prototype._computeTargetAndRootIntersection=function(n,i){if("none"!=t.getComputedStyle(n).display){for(var o,r,s,c,a,l,p,d,f=h(n),g=u(n),_=!1;!_;){var v=null,m=1==g.nodeType?t.getComputedStyle(g):{};if("none"==m.display)return;if(g==this.root||g==e?(_=!0,v=i):g!=e.body&&g!=e.documentElement&&"visible"!=m.overflow&&(v=h(g)),v&&(o=v,r=f,s=void 0,c=void 0,a=void 0,l=void 0,p=void 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