react-virtuoso - npm Package Compare versions

Comparing version 0.16.4 to 0.16.5

dist/react-virtuoso.cjs.production.min.js

@@ -1,2 +0,2 @@
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f=l.start,c=l.end,h=l.size;o=o.empty()&&f===c&&r.indexOf(f)>-1?o.insertSpots(r,h):o.insert(f,c,h)}o!==n?(b.next(o),y.next([!0,o])):y.next([!1,o])})),{totalCount$:f,offsetList$:b,totalHeight$:k,footerHeight$:l,initialItemCount$:p,itemHeights$:c,stickyItems$:C,heightsChanged$:y}}({totalCount:s,itemHeight:a,defaultItemHeight:l,initialTopMostItemIndex:u,viewportHeight$:c,scrollTop$:h,transposer$:f,topList$:$}),M=H.stickyItems$,O=H.initialItemCount$,P=H.itemHeights$,j=H.offsetList$,V=H.totalCount$,W=H.footerHeight$,F=H.totalHeight$,_=H.heightsChanged$,B=function(t){var e=t.transposer$,n=t.stickyItems$,r=t.totalCount$,i=v(),o=n.pipe();return i.subscribe((function(t){var i=new L(t);e.next(i),r.next(i.totalCount()),n.next(i.groupIndices())})),{groupCounts$:i,groupIndices$:o}}({totalCount$:V,transposer$:f,stickyItems$:M}),D=B.groupCounts$,K=B.groupIndices$,G=function(t){var e,n=t.totalHeight$,r=t.viewportHeight$,i=t.scrollTop$,o=v(!1);return m(i,r,n).pipe(x((function(t){var e=t[1];return 0!==e&&t[0]===t[2]-e}))).subscribe((function(t){clearTimeout(e),t?o.next(!0):e=setTimeout((function(){return o.next(!1)}))})),{scrolledToBottom$:o}}({totalHeight$:F,viewportHeight$:c,scrollTop$:h}).scrolledToBottom$,q=function(t){var e=t.offsetList$,n=t.topListHeight$,r=t.stickyItems$,i=t.viewportHeight$,o=t.totalCount$,s=t.totalHeight$,a=t.initialTopMostItemIndex,u=t.heightsChanged$,l=t.scrollTop$,f=g(),c=v(!1),h=v(!0),d=g(),p=function(t){var e=t.initialTopMostItemIndex,n=t.scrollToIndex$,r=t.scrollTop$,i=t.scrollTo$,o=t.offsetList$,s=v(!e);return r.pipe(T(i,s)).subscribe((function(t){t[0]!==t[1].top||t[2]||setTimeout((function(){s.next(!0)}))})),o.pipe(T(s)).subscribe((function(t){t[1]||setTimeout((function(){n.next(e)}))})),{scrolledToTopMostItem$:s}}({scrollTo$:d,offsetList$:e,scrollToIndex$:f,scrollTop$:l,initialTopMostItemIndex:a}).scrolledToTopMostItem$;return u.pipe(T(p)).subscribe((function(t){!t[0][0]&&t[1]&&(c.next(!1),h.next(!0))})),f.pipe(T(e,n,r,i,o,s),x((function(t){var e,n=t[0],r=t[1],i=t[2],o=t[3],s=t[4],a=t[6];"number"==typeof n&&(n={index:n,align:"start",behavior:"auto"});var u=n.index,l=n.align,f=void 0===l?"start":l;u=Math.max(0,u,Math.min(t[5]-1,u));var c=r.offsetOf(u);return"end"===f?c=c-s+r.itemAt(u).size:"center"===f?c=Math.round(c-s/2+r.itemAt(u).size/2):-1===o.indexOf(u)&&(c-=i),h.next(!1),{top:Math.min(c,Math.floor(a-s)),behavior:null!==(e=n.behavior)&&void 0!==e?e:"auto"}}))).subscribe(d.next),l.pipe(T(h)).subscribe((function(t){t[1]||(h.next(!0),c.next(!0))})),e.pipe(T(c,f)).subscribe((function(t){t[1]&&f.next(t[2])})),{scrollToIndex$:f,scrollTo$:d,scrolledToTopMostItem$:p}}({initialTopMostItemIndex:u,scrollTop$:h,offsetList$:j,viewportHeight$:c,totalHeight$:F,stickyItems$:M,totalCount$:V,topListHeight$:S,heightsChanged$:_}),U=q.scrollToIndex$,Y=q.scrollTo$,J=function(t){var e=t.overscan,n=t.viewportHeight$,r=t.scrollTop$,i=t.topListHeight$,o=t.footerHeight$,s=t.minListIndex$,a=t.totalCount$,u=t.offsetList$,l=t.scrolledToTopMostItem$,f=t.transposer$,c=t.totalHeight$,h=v(0),d=g(),p=v([]),y=v(0);m(r,c,n).pipe(x((function(t){return Math.max(0,Math.min(t[0],t[1]-t[2]))}))).subscribe(y.next),m(n,y,i,h,o,s,a,u,l,f).pipe(C((function(t,n){var r=n[0],i=n[1],o=n[2],s=n[3],a=n[4],u=n[5],l=n[6],f=n[7],c=n[8],h=n[9],d=t.length;if(0===l)return[];var p=z(t),v=p-i+s-a-o,g=Math.max(l-1,0);if((v<r||d>0&&(t[0].index<u||t[d-1].index>g))&&(t=h.transpose(f.range(i,i+r+2*e-1,u,g))),p>i){var m=Math.max(i-2*e,0);t=h.transpose(f.range(m,i+r-1,u,g))}return t.length>1&&!c?[]:t}),[]),b()).subscribe(p.next);var $=m(p,r,i).pipe(x((function(t){return z(t[0])}))),I=0;return p.pipe(x((function(t){return t.length?t[t.length-1].index:0}))).pipe(T(a)).subscribe((function(t){var e=t[0],n=t[1];0!==n&&e===n-1&&I!==e&&(I=e,d.next(e))})),{list$:p,listOffset$:$,listHeight$:h,endReached$:d}}({overscan:r,viewportHeight$:c,scrollTop$:h,totalHeight$:F,topListHeight$:S,footerHeight$:W,minListIndex$:w,totalCount$:V,offsetList$:j,scrolledToTopMostItem$:q.scrolledToTopMostItem$,transposer$:f}),Q=J.listHeight$,X=J.list$,Z=J.listOffset$,tt=J.endReached$,et=function(t){var e=t.offsetList$,n=t.scrollTop$,r=t.scrollTo$,i=g(),o=v(!1);return i.pipe(T(e,n,o)).subscribe((function(t){var n=t[0],i=t[1],s=t[2];t[3]||i.empty()||(o.next(!0),e.next(i.adjustForPrependedItems(n)),setTimeout((function(){r.next({top:n*i.getDefaultSize()+s}),o.next(!1)})))})),{adjustForPrependedItems$:i,adjustmentInProgress$:o}}({offsetList$:j,scrollTop$:h,scrollTo$:Y}),nt=et.adjustForPrependedItems$,rt=et.adjustmentInProgress$,it=function(t){var e=t.list$,n=t.offsetList$,r=t.scrollTop$,i=t.scrollTo$,o=v(null),s=v(Infinity);return n.pipe(T(s,r,e)).subscribe((function(t){var e=t[2],n=t[3];return t[0].configureMaxRangeSize(t[1],(function(){o.next({index:n[0].index,offset:e-n[0].offset})}))})),n.pipe(T(o)).subscribe((function(t){var e=t[1];if(null!==e){var n=t[0].offsetOf(e.index)+e.offset;i.next({top:n}),o.next(null)}})),{maxRangeSize$:s}}({scrollTo$:Y,offsetList$:j,scrollTop$:h,list$:X}).maxRangeSize$,ot=function(t){var e=t.topList$,n=t.transposer$,r=t.viewportHeight$,i=t.totalCount$,o=t.offsetList$,s=v();return m(o,s,i,r).pipe(I((function(t){return t[1]>0&&t[3]>0})),T(n),x((function(t){var e=t[0],n=e[0],r=t[1],i=Math.max(0,Math.min(e[1]-1,e[2]));return r.transpose(n.indexRange(0,i))}))).subscribe(e.next),{topItemCount$:s}}({offsetList$:j,totalCount$:V,transposer$:f,viewportHeight$:c,topList$:$}).topItemCount$,st=function(t){var e=t.scrollToIndex$,n=t.scrolledToBottom$,r=t.totalCount$,i=v(!1);return m(i,r).pipe(T(n)).subscribe((function(t){var n=t[0],r=n[1];n[0]&&t[1]&&setTimeout((function(){e.next({index:r-1,align:"end",behavior:"auto"})}))})),{followOutput$:i}}({totalCount$:V,scrollToIndex$:U,scrolledToBottom$:G}).followOutput$,at=Z.pipe(x((function(t){return-t}))),ut=g();X.pipe(T(rt),I((function(t){return 0!==t[0].length&&!t[1]})),x((function(t){var e=t[0];return{startIndex:e[0].index,endIndex:e[e.length-1].index}})),b((function(t,e){return!t||t.startIndex!==e.startIndex||t.endIndex!==e.endIndex}))).subscribe(ut.next);var lt=function(t){var e,n,r=t.isScrolling$,i=t.scrollTop$,o=t.rangeChanged$,s=v(0),a=v(!1),u=v(!1);return r.pipe(I((function(t){return!t})),y(0)).subscribe(s.next),i.pipe((function(t,r){e=t,n||(n=setTimeout((function(){n=void 0,r(e)}),100))}),C((function(t,e){return[t[1],e]}),[0,0]),x((function(t){return t[1]-t[0]}))).subscribe(s.next),s.pipe(T(u,a,o),I((function(t){return!!t[1]})),x((function(t){var e=t[0],n=t[1],r=t[2],i=t[3],o=n.enter;if(r){if((0,n.exit)(e,i))return!1}else if(o(e,i))return!0;return r})),b()).subscribe(a.next),m(a,s,o).pipe(T(u)).subscribe((function(t){var e=t[0],n=t[1];return e[0]&&n&&n.change(e[1],e[2])})),{isSeeking$:a,scrollSeekConfiguration$:u,scrollVelocity$:s}}({scrollTop$:h,isScrolling$:d,rangeChanged$:ut}),ft=lt.isSeeking$,ct=lt.scrollVelocity$,ht=lt.scrollSeekConfiguration$,dt=F.pipe(x((function(t){return Math.min(t,15e6)}))),pt=m(F,dt,c).pipe(x((function(t){var e=t[2];return(t[0]-e)/(t[1]-e)}))),vt=v(0,!1),gt=m(Z,pt).pipe(x((function(t){return t[0]/t[1]})));m(vt,pt).pipe(x((function(t){return t[0]*t[1]}))).subscribe(h.next);var mt=v((function(t){return t})),xt=v((function(t,e){return t})),yt=v((function(t){return t})),$t=v("div"),It=v("div"),bt=v(!1),Ct=v(Symbol("data-key"));return m(xt,yt,ht,mt,$t,It,Ct).pipe(x((function(t){var e=t[0],r=t[1],i=t[2],s=t[3],a=t[4],u=t[5];return{render:function(t,l){var f,c=l.key,h=l.renderPlaceholder,d=function(t,e){if(null==t)return{};var n,r,i={},o=Object.keys(t);for(r=0;r<o.length;r++)e.indexOf(n=o[r])>=0||(i[n]=t[n]);return i}(l,["key","renderPlaceholder"]);return s&&(c=s(t.index)),"group"===t.type?n.createElement(u,o({key:c},d),r(t.groupIndex)):(f=i&&h?n.createElement(i.placeholder,{height:d["data-known-size"],index:t.index}):e(t.transposedIndex),n.createElement(a,o({},d,{key:c}),f))}}}))).subscribe(bt.next),{groupCounts:A(D),itemHeights:A(P),footerHeight:A(W),listHeight:A(Q),viewportHeight:A(c),scrollTop:A(vt),topItemCount:A(ot),totalCount:A(V),scrollToIndex:A(U),initialItemCount:A(O),followOutput:A(st),adjustForPrependedItems:A(nt),maxRangeSize:A(it),scrollSeekConfiguration:A(ht),renderProp:A(xt),groupRenderProp:A(yt),computeItemKey:A(mt),itemContainer:A($t),groupContainer:A(It),dataKey:A(Ct),itemRender:N(bt),list:N(X),isSeeking:N(ft),scrollVelocity:N(ct),itemsRendered:N(X),topList:N($),listOffset:N(gt),totalHeight:N(dt),endReached:N(tt),atBottomStateChange:N(G),totalListHeightChanged:N(F),rangeChanged:N(ut),isScrolling:N(d),stickyItems:N(M),groupIndices:N(K),stickyItemsOffset:N(at),scrollTo:N(Y)}},j={top:0,position:"absolute",height:"100%",width:"100%"},V=function(t,n,i){var o=e.useRef(null),s=e.useRef(0),a=new r((function(e){var n=Math.round(e[0].contentRect.height);i&&(s.current=window.requestAnimationFrame((function(){var t=e[0].target;document.body.contains(t)&&i(t)}))),t(n)}));return e.useEffect((function(){return function(){return window.cancelAnimationFrame(s.current)}}),[]),function(t){t?(a.observe(t),n&&n(t),o.current=t):(a.unobserve(o.current),o.current=null)}};function W(t,n){var r=e.useState(function(t,e){return function(){var n=e;return t((function(t){n=t})),n}}(t,n)),i=r[0],o=r[1];return e.useEffect((function(){return t(o),function(){return t(void 0)}}),[t]),i}function F(t){var e,n=!1;return function(){return n||(n=!0,e=t()),e}}var _=F((function(){var t=document.createElement("div");return t.style.position="-webkit-sticky","-webkit-sticky"===t.style.position?"-webkit-sticky":"sticky"})),B=function(t){return n.createElement("div",{style:{height:t.height+"px",position:"absolute",top:0}}," ")},D=n.memo((function(){var t=e.useContext(i),r=t.isSeeking,o=t.topList,s=t.itemRender,a=W(t.list,[]),u=W(o,[]),l=W(s,!1),f=W(r,!1),c=[],h=0,d=[],p=u.reduce((function(t,e){return t+e.size}),0);return u.forEach((function(t,e){var n=t.index;d.push(n);var r={top:h+"px",marginTop:0===e?-p+"px":void 0,zIndex:2,position:_()};l&&c.push(l.render(t,{key:n,"data-index":n,"data-known-size":t.size,renderPlaceholder:f,style:r})),h+=t.size})),a.forEach((function(t){d.indexOf(t.index)>-1||l&&c.push(l.render(t,{key:t.index,"data-index":t.index,"data-known-size":t.size,renderPlaceholder:f}))})),n.createElement(n.Fragment,null,c)})),K={height:"40rem",overflowY:"auto",WebkitOverflowScrolling:"touch",position:"relative",outline:"none"},G=function(t){var r=t.className,i=t.style,o=t.reportScrollTop,s=t.scrollTo,a=t.children,u=e.useRef(null),l=e.useRef(null),f=e.useRef(),c=e.useCallback((function(t){var e=t.target.scrollTop;f.current=e,null!==l.current?l.current===e&&(l.current=null,o(e)):o(e)}),[o]),h=e.useCallback((function(t){t?(t.addEventListener("scroll",c,{passive:!0}),u.current=t):u.current&&u.current.removeEventListener("scroll",c)}),[c]);return s((function(t){f.current!==t.top&&("smooth"===t.behavior&&(l.current=t.top),u.current&&u.current.scrollTo(t))})),n.createElement("div",{ref:h,style:i,tabIndex:0,className:r},a)},q=function(t){var e=t.children,r=t.className,i=t.ScrollContainer,s=t.scrollTop,a=t.scrollTo;return n.createElement(void 0===i?G:i,{style:o({},K,{},t.style),reportScrollTop:s,scrollTo:a,className:r},e)},U=function(t){return n.createElement("footer",{ref:t.footerRef},t.children)},Y=function(t){return n.createElement("div",{ref:t.listRef,style:t.style},t.children)},J=function(t){var r=t.footer,o=t.FooterContainer,s=void 0===o?U:o,a=V(e.useContext(i).footerHeight);return n.createElement(s,{footerRef:a},r())},Q=function(t){var r=t.fixedItemHeight,o=t.children,s=t.ListContainer,a=e.useContext(i),u=a.listHeight,l=a.itemHeights,f={marginTop:W(a.listOffset,0)+"px"},c=V(u,(function(){}),(function(t){if(!r){var e=function(t){for(var e=[],n=0,r=t.length;n<r;n++){var i=t.item(n);if(i&&void 0!==i.dataset.index){var o=parseInt(i.dataset.index),s=parseInt(i.dataset.knownSize),a=i.offsetHeight;if(a!==s){var u=e[e.length-1];0===e.length||u.size!==a||u.end!==o-1?e.push({start:o,end:o,size:a}):e[e.length-1].end++}}}return e}(t.children);l(e)}}));return n.createElement(s,{listRef:c,style:f},o)},X=function(t){var r=t.style,o=t.footer,s=t.fixedItemHeight,a=t.ScrollContainer,u=t.ListContainer,l=t.FooterContainer,f=t.className,c=e.useContext(i),h=c.scrollTo,d=c.scrollTop,p=c.viewportHeight,v=W(c.totalHeight,0),g=V(p);return n.createElement(q,{style:r,ScrollContainer:a,className:f,scrollTo:h,scrollTop:function(t){d(Math.max(t,0))}},n.createElement("div",{ref:g,style:j},n.createElement(Q,{fixedItemHeight:s,ListContainer:u},n.createElement(D,null),o&&n.createElement(J,{footer:o,FooterContainer:l}))),n.createElement(B,{height:v}))},Z={},tt=n.memo((function(t){return n.createElement(i.Provider,{value:t.contextValue},n.createElement(X,{style:t.style||Z,className:t.className,footer:t.footer,fixedItemHeight:void 0!==t.itemHeight,ScrollContainer:t.ScrollContainer,FooterContainer:t.FooterContainer,ListContainer:t.ListContainer||Y}))})),et=e.forwardRef((function(t,r){var i=e.useState((function(){return P(t)}))[0];return e.useImperativeHandle(r,(function(){return{scrollToIndex:function(t){i.scrollToIndex(t)},adjustForPrependedItems:function(t){i.adjustForPrependedItems(t)}}}),[i]),e.useEffect((function(){return i.isScrolling(t.scrollingStateChange),i.atBottomStateChange(t.atBottomStateChange),i.endReached(t.endReached),i.topItemCount(t.topItems||0),i.totalCount(t.totalCount),t.initialItemCount&&i.initialItemCount(t.initialItemCount),i.itemsRendered(t.itemsRendered),i.totalListHeightChanged(t.totalListHeightChanged),i.followOutput(!!t.followOutput),i.maxRangeSize(t.maxHeightCacheSize||Infinity),i.rangeChanged(t.rangeChanged),i.scrollSeekConfiguration(t.scrollSeek),i.computeItemKey(t.computeItemKey||function(t){return t}),i.itemContainer(t.ItemContainer||"div"),i.renderProp(t.item),i.dataKey(t.dataKey),function(){i.itemsRendered(void 0),i.totalListHeightChanged(void 0)}}),[i,t.scrollingStateChange,t.atBottomStateChange,t.endReached,t.topItems,t.totalCount,t.initialItemCount,t.itemsRendered,t.totalListHeightChanged,t.followOutput,t.maxHeightCacheSize,t.rangeChanged,t.scrollSeek,t.item,t.ItemContainer,t.computeItemKey,t.dataKey]),n.createElement(tt,{contextValue:i,style:t.style,className:t.className,footer:t.footer,itemHeight:t.itemHeight,ScrollContainer:t.ScrollContainer,FooterContainer:t.FooterContainer,ListContainer:t.ListContainer})}));et.displayName="Virtuoso";var nt=e.forwardRef((function(t,r){var i=e.useState(P(t))[0];return e.useImperativeHandle(r,(function(){return{scrollToIndex:function(t){i.scrollToIndex(t)}}}),[i]),e.useEffect((function(){return i.endReached(t.endReached),i.rangeChanged(t.rangeChanged),i.atBottomStateChange(t.atBottomStateChange),i.isScrolling(t.scrollingStateChange),i.groupCounts(t.groupCounts),i.groupIndices(t.groupIndices),i.itemsRendered(t.itemsRendered),i.totalListHeightChanged(t.totalListHeightChanged),i.renderProp(t.item),i.groupRenderProp(t.group),i.itemContainer(t.ItemContainer||"div"),i.groupContainer(t.GroupContainer||"div"),i.scrollSeekConfiguration(t.scrollSeek),function(){i.itemsRendered(void 0),i.totalListHeightChanged(void 0)}}),[i,t.endReached,t.rangeChanged,t.atBottomStateChange,t.scrollingStateChange,t.groupCounts,t.groupIndices,t.itemsRendered,t.totalListHeightChanged,t.item,t.group,t.GroupContainer,t.ItemContainer]),n.createElement(tt,{contextValue:i,style:t.style,className:t.className,footer:t.footer,itemHeight:t.itemHeight,ScrollContainer:t.ScrollContainer,FooterContainer:t.FooterContainer,ListContainer:t.ListContainer})}));nt.displayName="GroupedVirtuoso";var rt=Math.ceil,it=Math.floor,ot=Math.min,st=Math.max,at=function(t){return rt(t)-t<.03?rt(t):it(t)},ut=function(){var t=v([0,0,void 0,void 0]),e=v(0),n=v(0),r=v(0),i=v([0,0]),o=v(0),s=v(0),a=g();m(t,n,r,e).pipe(T(i)).subscribe((function(t){var e=t[0],n=e[0],r=n[0],a=n[1],u=n[2],l=n[3],f=e[1],c=e[2],h=e[3],d=t[1];if(void 0!==u&&void 0!==l){if(0===h)return i.next([0,-1]),void s.next(0);var p=d[0],v=d[1],g=at(r/u),m=function(t,e){return void 0===e&&(e=it),e(t/g)},x=function(t){var e=t?[0,c]:[c,0],n=e[1],r=g*it((f-e[0])/l),o=g*rt((f+a+n)/l)-1;o=ot(h-1,o),r=ot(o,st(0,r)),i.next([r,o]),s.next(m(r)*l)},y=l*m(p),$=l*m(v)+l;h<v-1?x(!0):y>f?x(!1):$<f+a&&x(!0),o.next(l*m(h,rt))}}));var u=a.pipe(T(t,e),x((function(t){var e=t[0],n=t[1],r=n[0],i=n[1],o=n[2],s=n[3];if(void 0===o||void 0===s)return{top:0,behavior:"auto"};"number"==typeof e&&(e={index:e,align:"start"});var a=e.index,u=e.align,l=void 0===u?"start":u;a=Math.max(0,a,Math.min(t[2]-1,a));var f=at(r/o),c=it(a/f)*s;return"end"===l?c=c-i+s:"center"===l&&(c=Math.round(c-i/2+s/2)),{top:c,behavior:"auto"}}))),l=k(n),f=g(),c=0;return i.pipe(T(e)).subscribe((function(t){var e=t[0][1],n=t[1];0!==n&&e===n-1&&c!==e&&(c=e,f.next(e))})),{gridDimensions:A(t),totalCount:A(e),scrollTop:A(n),overscan:A(r),scrollToIndex:A(a),itemRange:N(i),totalHeight:N(o),listOffset:N(s),scrollTo:N(u),isScrolling:N(l),endReached:N(f)}},lt=function(t){function e(){var e;return(e=t.apply(this,arguments)||this).state=ut(),e}s(e,t),e.getDerivedStateFromProps=function(t,e){return e.overscan(t.overscan||0),e.totalCount(t.totalCount),e.isScrolling(t.scrollingStateChange),e.endReached(t.endReached),null};var r=e.prototype;return r.scrollToIndex=function(t){this.state.scrollToIndex(t)},r.render=function(){return n.createElement(ft,Object.assign({},this.props,{engine:this.state}))},e}(n.PureComponent),ft=function(t){var i,o,s,a,u=t.ScrollContainer,l=t.ItemContainer,f=void 0===l?"div":l,c=t.ListContainer,h=void 0===c?"div":c,d=t.className,p=t.item,v=t.itemClassName,g=void 0===v?"virtuoso-grid-item":v,m=t.listClassName,x=void 0===m?"virtuoso-grid-list":m,y=t.engine,$=t.style,I=void 0===$?{height:"40rem"}:$,b=y.itemRange,C=y.listOffset,T=y.gridDimensions,k=y.scrollTo,w=y.scrollTop,S=W(y.totalHeight,0),H={marginTop:W(C,0)+"px"},M=W(b,[0,0]),R=(i=function(t){var e=t.element.firstChild.firstChild;T([t.width,t.height,e.offsetWidth,e.offsetHeight])},o=e.useRef(null),s=e.useRef([0,0]),a=new r((function(t){var e=t[0].contentRect,n=e.width,r=e.height;s.current[0]===n&&s.current[1]===r||(s.current=[n,r],i({element:t[0].target,width:Math.round(n),height:Math.round(r)}))})),function(t){t?(a.observe(t),o.current=t):(a.unobserve(o.current),o.current=null)});return n.createElement(q,{style:I,ScrollContainer:u,className:d,scrollTo:k,scrollTop:w},n.createElement("div",{ref:R,style:j},n.createElement(h,{style:H,className:x},function(t,e,r,i){for(var o=t[1],s=[],a=t[0];a<=o;a++)s.push(n.createElement(i,{key:a,className:r},e(a)));return s}(M,p,g,f))),n.createElement(B,{height:S}))};exports.GroupedVirtuoso=nt,exports.Virtuoso=et,exports.VirtuosoGrid=lt,exports.VirtuosoPresentation=tt;
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e=t.totalCount,n=t.itemHeight,r=t.defaultItemHeight,i=t.initialTopMostItemIndex,o=t.viewportHeight$,s=t.scrollTop$,u=t.topList$,a=t.transposer$,p=l(0),d=l(e),v=l(),m=function(t){var e=t.itemHeights$,n=t.viewportHeight$,r=l(),i=l(!1),o=r.subscribe((function(t){e.next([{start:0,end:0,size:30}]),n.next(30*t),i.next(!0),o()}));return{initialItemCount$:r,pendingRenderAfterInitial$:i}}({itemHeights$:v,viewportHeight$:o}),x=m.pendingRenderAfterInitial$,$=m.initialItemCount$,I=f(),C=S.create();n&&(C=C.insert(0,0,n)),r&&(C=C.insert(0,0,r)),i&&(C=C.setInitialIndex(i));var T=l(C),b=function(t){var e=t.offsetList$,n=t.scrollTop$,r=t.topList$,i=t.transposer$,o=l([]),s=c(e,o).pipe(h((function(t){return t[0].getOffsets(t[1])})));return c(e,s,n).pipe(g((function(t){return!t[1].empty()&&!t[0].empty()})),y(r,i),h((function(t){var e=t[0],n=e[0],r=t[1],i=t[2],o=e[1].findMaxValue(Math.max(e[2],0));if(1===r.length&&r[0].index===o)return r;var s=n.itemAt(o);return i.transpose([s])}))).subscribe(r.next),{stickyItems$:o}}({offsetList$:T,scrollTop$:s,topList$:u,transposer$:a}).stickyItems$,k=c(T,d,p).pipe(h((function(t){var e=t[2];return t[0].total(t[1]-1)+e})));return n||v.pipe(y(T,b,x)).subscribe((function(t){var e=t[0],n=t[1],r=t[2],i=t[3],o=n;i&&(o=S.create(),i=!1);for(var s=0,u=e;s<u.length;s++){var a=u[s],l=a.start,f=a.end,c=a.size;o=o.empty()&&l===f&&r.indexOf(l)>-1?o.insertSpots(r,c):o.insert(l,f,c)}o!==n?(T.next(o),I.next([!0,o])):I.next([!1,o])})),{totalCount$:d,offsetList$:T,totalHeight$:k,footerHeight$:p,initialItemCount$:$,itemHeights$:v,stickyItems$:b,heightsChanged$:I}}({totalCount:s,itemHeight:u,defaultItemHeight:d,initialTopMostItemIndex:a,viewportHeight$:I,scrollTop$:C,transposer$:$,topList$:R}),O=N.stickyItems$,_=N.initialItemCount$,V=N.itemHeights$,W=N.offsetList$,P=N.totalCount$,F=N.footerHeight$,j=N.totalHeight$,A=N.heightsChanged$,B=function(t){var e=t.transposer$,n=t.stickyItems$,r=t.totalCount$,i=l(),o=n.pipe();return i.subscribe((function(t){var i=new k(t);e.next(i),r.next(i.totalCount()),n.next(i.groupIndices())})),{groupCounts$:i,groupIndices$:o}}({totalCount$:P,transposer$:$,stickyItems$:O}),K=B.groupCounts$,D=B.groupIndices$,q=function(t){var e,n=t.totalHeight$,r=t.viewportHeight$,i=t.scrollTop$,o=l(!1);return c(i,r,n).pipe(h((function(t){var e=t[1];return 0!==e&&t[0]===t[2]-e}))).subscribe((function(t){clearTimeout(e),t?o.next(!0):e=setTimeout((function(){return o.next(!1)}))})),{scrolledToBottom$:o}}({totalHeight$:j,viewportHeight$:I,scrollTop$:C}).scrolledToBottom$,G=function(t){var e=t.offsetList$,n=t.topListHeight$,r=t.stickyItems$,i=t.viewportHeight$,o=t.totalCount$,s=t.totalHeight$,u=t.initialTopMostItemIndex,a=t.heightsChanged$,c=t.scrollTop$,p=f(),d=l(!1),g=l(!0),v=f(),m=function(t){var e=t.initialTopMostItemIndex,n=t.scrollToIndex$,r=t.scrollTop$,i=t.scrollTo$,o=t.offsetList$,s=l(!e);return r.pipe(y(i,s)).subscribe((function(t){t[0]!==t[1].top||t[2]||setTimeout((function(){s.next(!0)}))})),o.pipe(y(s)).subscribe((function(t){t[1]||setTimeout((function(){n.next(e)}))})),{scrolledToTopMostItem$:s}}({scrollTo$:v,offsetList$:e,scrollToIndex$:p,scrollTop$:c,initialTopMostItemIndex:u}).scrolledToTopMostItem$;return a.pipe(y(m)).subscribe((function(t){!t[0][0]&&t[1]&&(d.next(!1),g.next(!0))})),p.pipe(y(e,n,r,i,o,s),h((function(t){var e,n=t[0],r=t[1],i=t[2],o=t[3],s=t[4],u=t[6];"number"==typeof n&&(n={index:n,align:"start",behavior:"auto"});var a=n.index,l=n.align,f=void 0===l?"start":l;a=Math.max(0,a,Math.min(t[5]-1,a));var c=r.offsetOf(a);return"end"===f?c=c-s+r.itemAt(a).size:"center"===f?c=Math.round(c-s/2+r.itemAt(a).size/2):-1===o.indexOf(a)&&(c-=i),g.next(!1),{top:Math.max(0,Math.min(c,Math.floor(u-s))),behavior:(e=n.behavior,null!=e?e:"auto")}}))).subscribe(v.next),c.pipe(y(g)).subscribe((function(t){t[1]||(g.next(!0),d.next(!0))})),e.pipe(y(d,p)).subscribe((function(t){t[1]&&p.next(t[2])})),{scrollToIndex$:p,scrollTo$:v,scrolledToTopMostItem$:m}}({initialTopMostItemIndex:a,scrollTop$:C,offsetList$:W,viewportHeight$:I,totalHeight$:j,stickyItems$:O,totalCount$:P,topListHeight$:E,heightsChanged$:A}),U=G.scrollToIndex$,Y=G.scrollTo$,J=function(t){var e=t.overscan,n=t.viewportHeight$,r=t.scrollTop$,i=t.topListHeight$,o=t.footerHeight$,s=t.minListIndex$,u=t.totalCount$,a=t.offsetList$,p=t.scrolledToTopMostItem$,d=t.transposer$,g=t.totalHeight$,x=l(0),$=f(),I=l([]),C=l(0);c(r,g,n).pipe(h((function(t){return 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e=t[0],n=t[1];0!==n&&e===n-1&&b!==e&&(b=e,$.next(e))})),{list$:I,listOffset$:T,listHeight$:x,endReached$:$}}({overscan:i,viewportHeight$:I,scrollTop$:C,totalHeight$:j,topListHeight$:E,footerHeight$:F,minListIndex$:z,totalCount$:P,offsetList$:W,scrolledToTopMostItem$:G.scrolledToTopMostItem$,transposer$:$}),Q=J.listHeight$,X=J.list$,Z=J.listOffset$,tt=J.endReached$,et=function(t){var e=t.offsetList$,n=t.scrollTop$,r=t.scrollTo$,i=f(),o=l(!1);return i.pipe(y(e,n,o)).subscribe((function(t){var n=t[0],i=t[1],s=t[2];t[3]||i.empty()||(o.next(!0),e.next(i.adjustForPrependedItems(n)),setTimeout((function(){r.next({top:n*i.getDefaultSize()+s}),o.next(!1)})))})),{adjustForPrependedItems$:i,adjustmentInProgress$:o}}({offsetList$:W,scrollTop$:C,scrollTo$:Y}),nt=et.adjustForPrependedItems$,rt=et.adjustmentInProgress$,it=function(t){var e=t.list$,n=t.offsetList$,r=t.scrollTop$,i=t.scrollTo$,o=l(null),s=l(Infinity);return n.pipe(y(s,r,e)).subscribe((function(t){var e=t[2],n=t[3];return t[0].configureMaxRangeSize(t[1],(function(){o.next({index:n[0].index,offset:e-n[0].offset})}))})),n.pipe(y(o)).subscribe((function(t){var e=t[1];if(null!==e){var n=t[0].offsetOf(e.index)+e.offset;i.next({top:n}),o.next(null)}})),{maxRangeSize$:s}}({scrollTo$:Y,offsetList$:W,scrollTop$:C,list$:X}).maxRangeSize$,ot=function(t){var e=t.topList$,n=t.transposer$,r=t.viewportHeight$,i=t.totalCount$,o=t.offsetList$,s=l();return c(o,s,i,r).pipe(g((function(t){return t[1]>0&&t[3]>0})),y(n),h((function(t){var e=t[0],n=e[0],r=t[1],i=Math.max(0,Math.min(e[1]-1,e[2]));return r.transpose(n.indexRange(0,i))}))).subscribe(e.next),{topItemCount$:s}}({offsetList$:W,totalCount$:P,transposer$:$,viewportHeight$:I,topList$:R}).topItemCount$,st=function(t){var e=t.scrollToIndex$,n=t.scrolledToBottom$,r=t.totalCount$,i=l(!1);return c(i,r).pipe(y(n)).subscribe((function(t){var n=t[0],r=n[1];n[0]&&t[1]&&setTimeout((function(){e.next({index:r-1,align:"end",behavior:"auto"})}))})),{followOutput$:i}}({totalCount$:P,scrollToIndex$:U,scrolledToBottom$:q}).followOutput$,ut=Z.pipe(h((function(t){return-t}))),at=f();X.pipe(y(rt),g((function(t){return 0!==t[0].length&&!t[1]})),h((function(t){var e=t[0];return{startIndex:e[0].index,endIndex:e[e.length-1].index}})),v((function(t,e){return!t||t.startIndex!==e.startIndex||t.endIndex!==e.endIndex}))).subscribe(at.next);var lt=function(t){var e,n,r=t.isScrolling$,i=t.scrollTop$,o=t.rangeChanged$,s=l(0),u=l(!1),a=l(!1);return r.pipe(g((function(t){return!t})),p(0)).subscribe(s.next),i.pipe((function(t,r){e=t,n||(n=setTimeout((function(){n=void 0,r(e)}),100))}),m((function(t,e){return[t[1],e]}),[0,0]),h((function(t){return t[1]-t[0]}))).subscribe(s.next),s.pipe(y(a,u,o),g((function(t){return!!t[1]})),h((function(t){var e=t[0],n=t[1],r=t[2],i=t[3],o=n.enter;if(r){if((0,n.exit)(e,i))return!1}else if(o(e,i))return!0;return r})),v()).subscribe(u.next),c(u,s,o).pipe(y(a)).subscribe((function(t){var e=t[0],n=t[1];return e[0]&&n&&n.change(e[1],e[2])})),{isSeeking$:u,scrollSeekConfiguration$:a,scrollVelocity$:s}}({scrollTop$:C,isScrolling$:T,rangeChanged$:at}),ft=lt.isSeeking$,ct=lt.scrollVelocity$,ht=lt.scrollSeekConfiguration$,pt=j.pipe(h((function(t){return Math.min(t,15e6)}))),dt=c(j,pt,I).pipe(h((function(t){var e=t[2];return(t[0]-e)/(t[1]-e)}))),gt=l(0,!1),vt=c(Z,dt).pipe(h((function(t){return t[0]/t[1]})));c(gt,dt).pipe(h((function(t){return t[0]*t[1]}))).subscribe(C.next);var mt=l((function(t){return t})),yt=l((function(t,e){return t})),xt=l((function(t){return t})),$t=l("div"),It=l("div"),Ct=l(!1),Tt=l(Symbol("data-key"));return c(yt,xt,ht,mt,$t,It,Tt).pipe(h((function(t){var e=t[0],i=t[1],o=t[2],s=t[3],u=t[4],a=t[5];return{render:function(t,l){var f,c=l.key,h=l.renderPlaceholder,p=r.__rest(l,["key","renderPlaceholder"]);return s&&(c=s(t.index)),"group"===t.type?n.createElement(a,r.__assign({key:c},p),i(t.groupIndex)):(f=o&&h?n.createElement(o.placeholder,{height:p["data-known-size"],index:t.index}):e(t.transposedIndex),n.createElement(u,r.__assign(r.__assign({},p),{key:c}),f))}}}))).subscribe(Ct.next),{groupCounts:L(K),itemHeights:L(V),footerHeight:L(F),listHeight:L(Q),viewportHeight:L(I),scrollTop:L(gt),topItemCount:L(ot),totalCount:L(P),scrollToIndex:L(U),initialItemCount:L(_),followOutput:L(st),adjustForPrependedItems:L(nt),maxRangeSize:L(it),scrollSeekConfiguration:L(ht),renderProp:L(yt),groupRenderProp:L(xt),computeItemKey:L(mt),itemContainer:L($t),groupContainer:L(It),dataKey:L(Tt),itemRender:M(Ct),list:M(X),isSeeking:M(ft),scrollVelocity:M(ct),itemsRendered:M(X),topList:M(R),listOffset:M(vt),totalHeight:M(pt),endReached:M(tt),atBottomStateChange:M(q),totalListHeightChanged:M(j),rangeChanged:M(at),isScrolling:M(T),stickyItems:M(O),groupIndices:M(D),stickyItemsOffset:M(ut),scrollTo:M(Y)}},z={top:0,position:"absolute",height:"100%",width:"100%"},E=function(t,n,r){var o=e.useRef(null),s=e.useRef(0),u=new i((function(e){var n=Math.round(e[0].contentRect.height);r&&(s.current=window.requestAnimationFrame((function(){var t=e[0].target;document.body.contains(t)&&r(t)}))),t(n)}));return e.useEffect((function(){return function(){return window.cancelAnimationFrame(s.current)}}),[]),function(t){t?(u.observe(t),n&&n(t),o.current=t):(u.unobserve(o.current),o.current=null)}};function N(t,n){var r=e.useState(function(t,e){return function(){var n=e;return t((function(t){n=t})),n}}(t,n)),i=r[0],o=r[1];return e.useEffect((function(){return t(o),function(){return t(void 0)}}),[t]),i}function O(t){var e,n=!1;return function(){return n||(n=!0,e=t()),e}}var _=O((function(){var t=document.createElement("div");return t.style.position="-webkit-sticky","-webkit-sticky"===t.style.position?"-webkit-sticky":"sticky"})),V=function(t){return n.createElement("div",{style:{height:t.height+"px",position:"absolute",top:0}}," ")},W=n.memo((function(){var t=e.useContext(o),r=t.isSeeking,i=t.topList,s=t.itemRender,u=N(t.list,[]),a=N(i,[]),l=N(s,!1),f=N(r,!1),c=[],h=0,p=[],d=a.reduce((function(t,e){return t+e.size}),0);return a.forEach((function(t,e){var n=t.index;p.push(n);var r={top:h+"px",marginTop:0===e?-d+"px":void 0,zIndex:2,position:_()};l&&c.push(l.render(t,{key:n,"data-index":n,"data-known-size":t.size,renderPlaceholder:f,style:r})),h+=t.size})),u.forEach((function(t){p.indexOf(t.index)>-1||l&&c.push(l.render(t,{key:t.index,"data-index":t.index,"data-known-size":t.size,renderPlaceholder:f}))})),n.createElement(n.Fragment,null,c)})),P={height:"40rem",overflowY:"auto",WebkitOverflowScrolling:"touch",position:"relative",outline:"none"},F=function(t){var r=t.className,i=t.style,o=t.reportScrollTop,s=t.scrollTo,u=t.children,a=e.useRef(null),l=e.useRef(null),f=e.useRef(),c=e.useCallback((function(t){var e=t.target.scrollTop;f.current=e,null!==l.current?l.current===e&&(l.current=null,o(e)):o(e)}),[o]),h=e.useCallback((function(t){t?(t.addEventListener("scroll",c,{passive:!0}),a.current=t):a.current&&a.current.removeEventListener("scroll",c)}),[c]);return s((function(t){f.current!==t.top&&("smooth"===t.behavior&&(l.current=t.top),a.current&&a.current.scrollTo(t))})),n.createElement("div",{ref:h,style:i,tabIndex:0,className:r},u)},j=function(t){var e=t.children,i=t.style,o=t.className,s=t.ScrollContainer,u=t.scrollTop,a=t.scrollTo;return n.createElement(void 0===s?F:s,{style:r.__assign(r.__assign({},P),i),reportScrollTop:u,scrollTo:a,className:o},e)},A=function(t){return n.createElement("footer",{ref:t.footerRef},t.children)},B=function(t){return n.createElement("div",{ref:t.listRef,style:t.style},t.children)},K=function(t){var r=t.footer,i=t.FooterContainer,s=void 0===i?A:i,u=E(e.useContext(o).footerHeight);return n.createElement(s,{footerRef:u},r())},D=function(t){var r=t.fixedItemHeight,i=t.children,s=t.ListContainer,u=e.useContext(o),a=u.listHeight,l=u.itemHeights,f={marginTop:N(u.listOffset,0)+"px"},c=E(a,(function(){}),(function(t){if(!r){var e=function(t){for(var e=[],n=0,r=t.length;n<r;n++){var i=t.item(n);if(i&&void 0!==i.dataset.index){var o=parseInt(i.dataset.index),s=parseInt(i.dataset.knownSize),u=i.offsetHeight;if(u!==s){var a=e[e.length-1];0===e.length||a.size!==u||a.end!==o-1?e.push({start:o,end:o,size:u}):e[e.length-1].end++}}}return e}(t.children);l(e)}}));return n.createElement(s,{listRef:c,style:f},i)},q=function(t){var r=t.style,i=t.footer,s=t.fixedItemHeight,u=t.ScrollContainer,a=t.ListContainer,l=t.FooterContainer,f=t.className,c=e.useContext(o),h=c.scrollTo,p=c.scrollTop,d=c.viewportHeight,g=N(c.totalHeight,0),v=E(d);return n.createElement(j,{style:r,ScrollContainer:u,className:f,scrollTo:h,scrollTop:function(t){p(Math.max(t,0))}},n.createElement("div",{ref:v,style:z},n.createElement(D,{fixedItemHeight:s,ListContainer:a},n.createElement(W,null),i&&n.createElement(K,{footer:i,FooterContainer:l}))),n.createElement(V,{height:g}))},G={},U=n.memo((function(t){return n.createElement(o.Provider,{value:t.contextValue},n.createElement(q,{style:t.style||G,className:t.className,footer:t.footer,fixedItemHeight:void 0!==t.itemHeight,ScrollContainer:t.ScrollContainer,FooterContainer:t.FooterContainer,ListContainer:t.ListContainer||B}))})),Y=e.forwardRef((function(t,r){var i=e.useState((function(){return R(t)}))[0];return e.useImperativeHandle(r,(function(){return{scrollToIndex:function(t){i.scrollToIndex(t)},adjustForPrependedItems:function(t){i.adjustForPrependedItems(t)}}}),[i]),e.useEffect((function(){return i.isScrolling(t.scrollingStateChange),i.atBottomStateChange(t.atBottomStateChange),i.endReached(t.endReached),i.topItemCount(t.topItems||0),i.totalCount(t.totalCount),t.initialItemCount&&i.initialItemCount(t.initialItemCount),i.itemsRendered(t.itemsRendered),i.totalListHeightChanged(t.totalListHeightChanged),i.followOutput(!!t.followOutput),i.maxRangeSize(t.maxHeightCacheSize||Infinity),i.rangeChanged(t.rangeChanged),i.scrollSeekConfiguration(t.scrollSeek),i.computeItemKey(t.computeItemKey||function(t){return t}),i.itemContainer(t.ItemContainer||"div"),i.renderProp(t.item),i.dataKey(t.dataKey),function(){i.itemsRendered(void 0),i.totalListHeightChanged(void 0)}}),[i,t.scrollingStateChange,t.atBottomStateChange,t.endReached,t.topItems,t.totalCount,t.initialItemCount,t.itemsRendered,t.totalListHeightChanged,t.followOutput,t.maxHeightCacheSize,t.rangeChanged,t.scrollSeek,t.item,t.ItemContainer,t.computeItemKey,t.dataKey]),n.createElement(U,{contextValue:i,style:t.style,className:t.className,footer:t.footer,itemHeight:t.itemHeight,ScrollContainer:t.ScrollContainer,FooterContainer:t.FooterContainer,ListContainer:t.ListContainer})}));Y.displayName="Virtuoso";var J=e.forwardRef((function(t,r){var i=e.useState(R(t))[0];return e.useImperativeHandle(r,(function(){return{scrollToIndex:function(t){i.scrollToIndex(t)}}}),[i]),e.useEffect((function(){return i.endReached(t.endReached),i.rangeChanged(t.rangeChanged),i.atBottomStateChange(t.atBottomStateChange),i.isScrolling(t.scrollingStateChange),i.groupCounts(t.groupCounts),i.groupIndices(t.groupIndices),i.itemsRendered(t.itemsRendered),i.totalListHeightChanged(t.totalListHeightChanged),i.renderProp(t.item),i.groupRenderProp(t.group),i.itemContainer(t.ItemContainer||"div"),i.groupContainer(t.GroupContainer||"div"),i.scrollSeekConfiguration(t.scrollSeek),function(){i.itemsRendered(void 0),i.totalListHeightChanged(void 0)}}),[i,t.endReached,t.rangeChanged,t.atBottomStateChange,t.scrollingStateChange,t.groupCounts,t.groupIndices,t.itemsRendered,t.totalListHeightChanged,t.item,t.group,t.GroupContainer,t.ItemContainer]),n.createElement(U,{contextValue:i,style:t.style,className:t.className,footer:t.footer,itemHeight:t.itemHeight,ScrollContainer:t.ScrollContainer,FooterContainer:t.FooterContainer,ListContainer:t.ListContainer})}));J.displayName="GroupedVirtuoso";var Q=Math.ceil,X=Math.floor,Z=Math.min,tt=Math.max,et=function(t){return Q(t)-t<.03?Q(t):X(t)},nt=function(t){void 0===t&&(t=0);var e=l([0,0,void 0,void 0]),n=l(0),r=l(0),i=l(0),o=l([0,tt(t-1,0)]),s=l(0),u=l(0),a=f();c(e,r,i,n).pipe(y(o)).subscribe((function(t){var e=t[0],n=e[0],r=n[0],i=n[1],a=n[2],l=n[3],f=e[1],c=e[2],h=e[3],p=t[1];if(void 0!==a&&void 0!==l){if(0===h)return o.next([0,-1]),void u.next(0);var d=p[0],g=p[1],v=et(r/a),m=function(t,e){return void 0===e&&(e=X),e(t/v)},y=function(t){var e=t?[0,c]:[c,0],n=e[1],r=v*X((f-e[0])/l),s=v*Q((f+i+n)/l)-1;s=Z(h-1,s),r=Z(s,tt(0,r)),o.next([r,s]),u.next(m(r)*l)},x=l*m(d),$=l*m(g)+l;h<g-1?y(!0):x>f?y(!1):$<f+i&&y(!0),s.next(l*m(h,Q))}}));var p=a.pipe(y(e,n),h((function(t){var e=t[0],n=t[1],r=n[0],i=n[1],o=n[2],s=n[3];if(void 0===o||void 0===s)return{top:0,behavior:"auto"};"number"==typeof e&&(e={index:e,align:"start"});var u=e.index,a=e.align,l=void 0===a?"start":a;u=Math.max(0,u,Math.min(t[2]-1,u));var f=et(r/o),c=X(u/f)*s;return"end"===l?c=c-i+s:"center"===l&&(c=Math.round(c-i/2+s/2)),{top:c,behavior:"auto"}}))),d=x(r),g=f(),v=0;return o.pipe(y(n)).subscribe((function(t){var e=t[0][1],n=t[1];0!==n&&e===n-1&&v!==e&&(v=e,g.next(e))})),{gridDimensions:L(e),totalCount:L(n),scrollTop:L(r),overscan:L(i),scrollToIndex:L(a),itemRange:M(o),totalHeight:M(s),listOffset:M(u),scrollTo:M(p),isScrolling:M(d),endReached:M(g)}},rt=function(t){function e(){var e=null!==t&&t.apply(this,arguments)||this;return e.state=nt(e.props.initialItemCount),e}return r.__extends(e,t),e.getDerivedStateFromProps=function(t,e){return e.overscan(t.overscan||0),e.totalCount(t.totalCount),e.isScrolling(t.scrollingStateChange),e.endReached(t.endReached),null},e.prototype.scrollToIndex=function(t){this.state.scrollToIndex(t)},e.prototype.render=function(){return n.createElement(it,r.__assign({},this.props,{engine:this.state}))},e}(n.PureComponent),it=function(t){var r,o,s,u,a=t.ScrollContainer,l=t.ItemContainer,f=void 0===l?"div":l,c=t.ListContainer,h=void 0===c?"div":c,p=t.className,d=t.item,g=t.itemClassName,v=void 0===g?"virtuoso-grid-item":g,m=t.listClassName,y=void 0===m?"virtuoso-grid-list":m,x=t.engine,$=t.style,I=void 0===$?{height:"40rem"}:$,C=x.itemRange,T=x.listOffset,b=x.gridDimensions,k=x.scrollTo,w=x.scrollTop,S=N(x.totalHeight,0),H={marginTop:N(T,0)+"px"},M=N(C,[0,0]),L=(r=function(t){var e=t.element.firstChild.firstChild;b([t.width,t.height,e.offsetWidth,e.offsetHeight])},o=e.useRef(null),s=e.useRef([0,0]),u=new i((function(t){var e=t[0].contentRect,n=e.width,i=e.height;s.current[0]===n&&s.current[1]===i||(s.current=[n,i],r({element:t[0].target,width:Math.round(n),height:Math.round(i)}))})),function(t){t?(u.observe(t),o.current=t):(u.unobserve(o.current),o.current=null)});return n.createElement(j,{style:I,ScrollContainer:a,className:p,scrollTo:k,scrollTop:w},n.createElement("div",{ref:L,style:z},n.createElement(h,{style:H,className:y},function(t,e,r,i){for(var o=t[1],s=[],u=t[0];u<=o;u++)s.push(n.createElement(i,{key:u,className:r},e(u)));return s}(M,d,v,f))),n.createElement(V,{height:S}))};exports.GroupedVirtuoso=J,exports.Virtuoso=Y,exports.VirtuosoGrid=rt,exports.VirtuosoPresentation=U;
 //# sourceMappingURL=react-virtuoso.cjs.production.min.js.map

dist/VirtuosoGrid.d.ts

@@ -23,2 +23,3 @@ import React, { CSSProperties, ReactElement } from 'react';
     endReached?: (index: number) => void;
+    initialItemCount?: number;
 }
@@ -25,0 +26,0 @@ declare type VirtuosoGridState = ReturnType<typeof VirtuosoGridEngine>;

dist/VirtuosoGridEngine.d.ts

@@ -10,3 +10,3 @@ import { TScrollLocation } from './EngineCommons';
 number];
-export declare const VirtuosoGridEngine: () => {
+export declare const VirtuosoGridEngine: (initialItemCount?: number) => {
     gridDimensions: import("./rxio").TInput<GridDimensions>;
@@ -13,0 +13,0 @@ totalCount: import("./rxio").TInput<number>;

package.json

 {
   "name": "react-virtuoso",
   "sideEffects": false,
-  "version": "0.16.4",
+  "version": "0.16.5",
   "homepage": "https://virtuoso.dev",
@@ -6,0 +6,0 @@ "license": "MIT",

No alert changes

Worsened metrics

Total package byte prevSize

727055

decreased by-3.19%

Lines of code

5978

decreased by-5.68%

No dependency changes