import type { IActivityHandler } from "../../IActivityHandler";
/** Defines inputs for the Area activity. This activity relies on the geometry engine. */
export interface AreaEngineTaskInputs {
    geometry: __esri.Polygon;
    geodesic?: boolean;
    unit?: "acres" | "ares" | "hectares" | "square-feet" | "square-meters" | "square-yards" | "square-kilometers" | "square-miles" | string | number;
}
/** Defines outputs for the Area activity. */
export interface AreaEngineTaskOutputs {
    /** @description The result area. */
    area: number;
}
export declare class AreaEngineTask implements IActivityHandler {
    static readonly action = "gcx:wf:arcgis::AreaEngineTask";
    static readonly suite = "gcx:wf:builtin";
    execute(inputs: AreaEngineTaskInputs): Promise<AreaEngineTaskOutputs>;
    private executeUsing;
}