import type { $Record } from '../object/types';
import type { Numeric } from '../types/index';
import { $BaseConverter } from './base';
import type { $AreaUnit, FormatToOptions } from './types';
/**
 * @class AreaConverter
 * @description Handles conversions with smart `.to()`, `.toAll()`, and `.formatTo()`.
 */
export declare class $Area extends $BaseConverter<$AreaUnit> {
    #private;
    /**
     * Convert area value to other area units
     * @param value Number or numeric string value to convert.
     * @param unit Base area unit for the provided value.
     */
    constructor(value: Numeric, unit: $AreaUnit);
    /**
     * @instance Converts to target area unit.
     * @param target Target area unit.
     */
    to(target: $AreaUnit): number;
    /**
     * @instance Converts to all area units.
     * @returns Object with all unit conversions.
     */
    toAll(): $Record<$AreaUnit, number>;
    /**
     * @instance Formats the converted value and unit.
     * @param target Target unit to format to.
     * @param options Formatting options.
     * @returns Formatted string like "5km²", "5.02 square-miles", or "5e+3 meter".
     */
    formatTo(target: $AreaUnit, options?: FormatToOptions): string;
}