all these changes

frontend/node_modules/@turf/buffer/index.d.ts

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+import {
+  Point,
+  LineString,
+  Polygon,
+  MultiPoint,
+  MultiLineString,
+  MultiPolygon,
+  GeometryObject,
+  GeometryCollection,
+  Feature,
+  FeatureCollection,
+  Units,
+} from "@turf/helpers";
+
+interface Options {
+  units?: Units;
+  steps?: number;
+}
+
+/**
+ * http://turfjs.org/docs/#buffer
+ */
+declare function buffer<Geom extends Point | LineString | Polygon>(
+  feature: Feature<Geom> | Geom,
+  radius?: number,
+  options?: Options
+): Feature<Polygon>;
+declare function buffer<
+  Geom extends MultiPoint | MultiLineString | MultiPolygon
+>(
+  feature: Feature<Geom> | Geom,
+  radius?: number,
+  options?: Options
+): Feature<MultiPolygon>;
+declare function buffer<Geom extends Point | LineString | Polygon>(
+  feature: FeatureCollection<Geom>,
+  radius?: number,
+  options?: Options
+): FeatureCollection<Polygon>;
+declare function buffer<
+  Geom extends MultiPoint | MultiLineString | MultiPolygon
+>(
+  feature: FeatureCollection<Geom>,
+  radius?: number,
+  options?: Options
+): FeatureCollection<MultiPolygon>;
+declare function buffer(
+  feature:
+    | FeatureCollection<any>
+    | Feature<GeometryCollection>
+    | GeometryCollection,
+  radius?: number,
+  options?: Options
+): FeatureCollection<Polygon | MultiPolygon>;
+declare function buffer(
+  feature: Feature<any> | GeometryObject,
+  radius?: number,
+  options?: Options
+): Feature<Polygon | MultiPolygon>;
+
+export default buffer;