type AreaSymbol = typeof areaSymbols[number];
/**
 * Type predicate.
 * @param candidate The candidate to test.
 */
declare function isAreaSymbol(candidate: any): candidate is AreaSymbol;
/**
* All the Area symbols.
*/
declare const areaSymbols: readonly ["Mm²", "km²", "m²", "cm²", "mm²", "µm²", "nm²", "in²", "ft²", "yd²", "mi²", "ac", "a", "ha"];

/**
 * The object representation of a measurement.
 *
 * @template Unit The type of the unit of measurement.
 * @template Value The type of the value of the measurement.
 */
type Measurement$1<Unit extends string, Value extends number = number> = Number & {
    readonly value: Value;
    readonly unit: Unit;
};

/**
 * Represents a dimension measurement.
 * @template Units - The units of the dimension.
 */
type Measurement<Units extends string, Unit extends Units = Units, Value extends number = number> = Measurement$1<Unit, Value> & Alternatives<Units>;

/**
 * Represents a collection of alternative measurements for different units.
 *
 * @template Units - The string literal type representing the available units.
 */
type Alternatives<Units extends string> = {
    readonly [unit in Units]: Measurement<Units, unit, number>;
};

/**
 * A dimension is a map of units to creation functions.
 * Each function takes a number value and returns a
 * dimension measurement.
 * @template Units - The units of the dimension.
 */
type Dimension<Units extends string> = {
    readonly [unit in Units]: (value: number) => Measurement<Units>;
};

type Area = Measurement<AreaSymbol>;
declare const area: Dimension<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareMegameters: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareKilometers: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareMeters: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareCentimeters: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareMillimeters: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareMicrometers: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareNanometers: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareInches: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareFeet: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareYards: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const squareMiles: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const acres: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const ares: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;
declare const hectares: (value: number) => Measurement<"Mm²" | "km²" | "m²" | "cm²" | "mm²" | "µm²" | "nm²" | "in²" | "ft²" | "yd²" | "mi²" | "ac" | "a" | "ha">;

export { acres, area, areaSymbols, ares, hectares, isAreaSymbol, squareCentimeters, squareFeet, squareInches, squareKilometers, squareMegameters, squareMeters, squareMicrometers, squareMiles, squareMillimeters, squareNanometers, squareYards };
export type { Area, AreaSymbol };