import Extent from "@arcgis/core/geometry/Extent";
export declare function addToPath(url: string, pathSuffix: string): string;
/**
 * Turns an extent into a polygon with the same perimeter and spatial reference. If the input is not an extent, it is returned unchanged.
 * @param geom The geometry whose extent will be rendered into a polygon.
 */
export declare function polygonFromExtent(geometry: __esri.GeometryUnion, type: typeof __esri.Polygon): __esri.GeometryUnion;
export declare function polygonFromExtent(geometry: __esri.GeometryUnion | undefined | null, type: typeof __esri.Polygon): __esri.GeometryUnion | undefined;
export declare function post<T extends __esri.RequestResponse>(url: string, query: Record<string, any>, timeout: number | undefined, signal?: AbortSignal): Promise<T>;
export declare function performRequest<T extends __esri.RequestResponse>(url: string, query: Record<string, any>, timeout: number | undefined, signal: AbortSignal | undefined, method?: "post" | "auto"): Promise<T>;
export declare function isFeatureSet(fs: __esri.Graphic | __esri.FeatureSet | __esri.Graphic[]): fs is __esri.FeatureSet;
export declare function featuresToArray(fs: __esri.Graphic | __esri.FeatureSet | __esri.Graphic[] | undefined | null): __esri.Graphic[];
export declare function extentOf(array: __esri.Geometry[]): Extent | undefined;