virtual-scroll.cljs

            (js/React.createElement
              (.-VirtualScroll js/ReactVirtualized)
              #js {:ref (.-registerChild opts)
                   :height 100
                   :rowsCount rowCount
                   :rowHeight 40
                   :width 1000
                   :overscanRowsCount 30
                   :className "internal-table"
                   :onRowsRendered (.-onRowsRendered opts)
                   :rowRenderer
                   (fn [idx]
                     (let [trans (get data (- idx start))]
                       (row-factory
                        (om/computed
                         transactions
                         {:columns columns
                          :height 40}))))})