vue3 + arcgis.js4.x---new Draw画板功能（画线）

const draw = new Draw({ view: window.customMap })
const graphicsLayer = new GraphicsLayer({
  id: 'custom-draw-layer'
})
window.customMap.map.add(graphicsLayer)
// 画线
const action = draw.create('polyline', { mode: 'click' })
action.on(['vertex-add'], (event) => {
  const paths = event.vertices.map((item) => webMercatorUtils.xyToLngLat(item[0], item[1]))
  const polylineGraphic = new Graphic()
  polylineGraphic.geometry = {
    type: 'polyline',
    paths
  }
  polylineGraphic.symbol = new SimpleLineSymbol({
    color: '#ff0000',
    width: '3px',
    style: 'solid'
  })
  graphicsLayer.add(polylineGraphic)
})