import { UserSession } from '@esri/arcgis-rest-auth';
import { IExtent, ISpatialReference } from '@esri/arcgis-rest-feature-layer';
import { ISerializedOperationStack } from '@esri/hub-common';
/**
 * Project an extent (IExtent) to a different spatial reference
 *
 * @export
 * @param {IExtent} extent
 * @param {ISpatialReference} outSR
 * @param {string} geometryServiceUrl
 * @param {UserSession} authentication
 * @return {*}  {Promise<IExtent>}
 */
export declare function projectExtent(extent: IExtent, outSR: ISpatialReference, geometryServiceUrl: string, authentication: UserSession): Promise<IExtent & ISerializedOperationStack>;