如何解决d3.event在v7版本无效影响zoom拖拽缩放问题

  let zoom = d3.zoom().scaleExtent([0, 8]).on('zoom', function (current){
    zoomed(current.transform)
  })
  ....
  let svg = d3
  ...
    .call(zoom)
    function zoomed(transform) {
      svg.style('transition', 'none')
      svg.attr('transform', `translate(${transform.x},${transform.y}) scale(${transform.k})`
     )}

let node = svg
...
   .on('mouseover', function (current) {
     clearTimeout(that.timer)
     that.timer = setTimeout(() => {
       that.drawTooltip(current.target.__data__, current)
     }, 100)
   })
   .on('mouseout', function (current) {
     clearTimeout(that.timer)
     that.toolTip.style('visibility', 'hidden')
   })

drawTooltip(data, event) {
  this.toolTip
    .style('visibility', 'visible')
    .style('left', `${event.layerX}px`)
    .style('top', `${event.layerY}px`)
    .text(`名称：${data.title}`)
    .append('p')
    .text(`类别：${data.type}`)
    .append('p')
    .text(`数量：${data.value}`)
}