import { UserSession } from '@esri/arcgis-rest-auth';
import { IExtent, ISpatialReference } from '@esri/arcgis-rest-feature-layer';
import { ITransformationResponse } from './interfaces';
/**
 * Given a set of Spatial References, fetch the recommended transformations
 * from the geometery service
 *
 * @export
 * @param {(number | ISpatialReference)} inSR
 * @param {(number | ISpatialReference)} outSR
 * @param {string} geometryServiceUrl
 * @param {UserSession} authentication
 * @param {IExtent} [extentOfInterest]
 * @param {number} [numResults]
 * @param {boolean} [vertical]
 * @return {*}  {Promise<ITransformationResponse>}
 */
export declare function findTransformations(inSR: number | ISpatialReference, outSR: number | ISpatialReference, geometryServiceUrl: string, authentication: UserSession, extentOfInterest?: IExtent, numResults?: number, vertical?: boolean): Promise<ITransformationResponse>;