const showTooltip = function(e, offsetElement) {
const left = e.pos[0] + (offsetElement.offsetLeft || 0),
top = e.pos[1] + (offsetElement.offsetTop || 0),
x = xAxis.tickFormat()(multibar.x()(e.point, e.pointIndex)),
y = yAxis.tickFormat()(multibar.y()(e.point, e.pointIndex)),
content = tooltip(e.point.seriesKey, x, y, e, chart);
nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
};
dispatch.on('tooltipHide', () => {
if (tooltips) {
nv.tooltip.cleanup();
}
});