public rowCount = this.props.hasNextPage ? this.props.list.length + 1 : this.props.list.length;

public rowCount = this.props.hasNextPage ? this.props.list.length + 1 : this.props.list.length;

<InfiniteLoader
        rowCount={this.rowCount}
        isRowLoaded={({ index }) => !!this.props.list[index]}
        loadMoreRows={this.props.loadMoreRows}
        minimumBatchSize={10}
        threshold={5}
      >
        {({ onRowsRendered, registerChild }) => (
          <WindowScroller>
            {({ height, isScrolling, onChildScroll, scrollTop }) => (
              <AutoSizer disableHeight>
                {({ width }) => (
                  <List
                    ref={list => {
                      this.listRef = list;
                      registerChild(list);
                    }}
                    onRowsRendered={onRowsRendered}
                    autoHeight
                    width={width}
                    height={height}
                    rowCount={this.props.list.length}
                    rowHeight={56}
                    rowRenderer={this.rowRenderer}
                    overscanRowCount={0}
                    isScrolling={isScrolling}
                    onScroll={onChildScroll}
                    scrollTop={scrollTop}
                  />
                )}
              </AutoSizer>
            )}
          </WindowScroller>
        )}
      </InfiniteLoader>