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Leaflet自定义图标,react-leaflet,无法构建Gatsby项目

当我在本地运行时,我的传单地图中的自定义图标工作得很好gatsby develop,但是当我尝试构建时,我收到与自定义标记图标相关的错误:

 WebpackError: TypeError: leaflet_src_layer_marker__WEBPACK_IMPORTED_MODULE_4__.Icon is not a constructor
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相关进口:

import { Map, Marker, Popup, TileLayer, Tooltip, ZoomControl } from 'react-leaflet'
import { Icon } from 'leaflet/src/layer/marker' 
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创建自定义图标:

// Init custom map icon
  const mapIcon = MapIcon();
  const markerIcon = new Icon({
    iconUrl: mapIcon,
    iconSize: [36, 36],
    iconAnchor: [18, 18],
    shadowSize: [36, 36],
    shadowUrl: 'https://unpkg.com/leaflet@1.5.1/dist/images/marker-shadow.png',
    shadowAnchor: [10, 18],
    popupAnchor: [0, -16],
    tooltipAnchor: [13, -4]
  });
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JSX:

{ markerData.length > 0 ? markerData.map((node, index) => (
            <Marker position={[node.coords.lat, node.coords.lng]} …
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leaflet gatsby react-leaflet

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gatsby ×1

leaflet ×1

react-leaflet ×1