feat: 完成 GeoJSON 相关声明

types/index.d.ts

@@ -118,6 +118,7 @@ import type {
   OverlayGroup,
   OverlayGroupEventType,
 } from './overlays/OverlayGroup';
+import type { GeoJSON, GeoJSONOptions } from './overlays/GeoJSON';
 
 import type { Control, CommonControlConfig } from './controls/Control.d.ts';
 import type { ControlBar, ControlBarConfig } from './controls/ControlBar.d.ts';
@@ -241,6 +242,8 @@ declare namespace AMap {
     LayerGroupEventType,
     OverlayGroup,
     OverlayGroupEventType,
+    GeoJSON,
+    GeoJSONOptions,
 
     // 地图控件
     Control,

types/overlays/GeoJSON.d.ts

@@ -0,0 +1,31 @@
+import type Marker from './Marker';
+import type Polygon from './Polygon';
+import type Polyline from './Polyline';
+import type { OverlayGroup } from './OverlayGroup';
+
+// TODO: 后续考虑是否依赖 @types/geojson
+type GeoJSONFeature = Record<string, any>;
+type GeoJSONFeatureCollection = Record<string, any>;
+
+export type GeoJSONOptions = {
+  /** 目前只支持 GeoJSON.FeatureCollection */
+  geoJSON?: GeoJSONFeatureCollection;
+  getMarker?: (geojsonFeature: GeoJSONFeature, coords: any) => Marker;
+  getPolyline?: (geojsonFeature: GeoJSONFeature, coords: any) => Polyline;
+  getPolygon?: (geojsonFeature: GeoJSONFeature, coords: any) => Polygon;
+};
+
+/**
+ * GeoJSON类，继承自OverLayGroup，可实现GeoJSON对象与OverlayGroup的相互转换
+ *
+ * @docs https://lbs.amap.com/api/javascript-api-v2/documentation#geojson
+ */
+export declare class GeoJSON extends OverlayGroup {
+  constructor(opt: GeoJSONOptions);
+  /** 将当前对象包含的覆盖物转换为GeoJSON对象 */
+  importData(data: GeoJSONFeatureCollection): void;
+  /** 将当前对象包含的覆盖物转换为GeoJSON对象 */
+  toGeoJSON(): Record<string, any>;
+}
+
+export default GeoJSON;