import { IMeasure } from '../types';
export type areaSystems = 'metric' | 'imperial';
export type areaUnits = 'mm2' | 'cm2' | 'm2' | 'are' | 'ha' | 'km2' | 'circ-mil' | 'circ-inch' | 'in2' | 'ft2' | 'yd2' | 'ro' | 'ac' | 'mi2' | 'twp';
export declare const area: IMeasure<areaSystems, areaUnits>;