type AngleSymbol = typeof angleSymbols[number];
/**
 * Type predicate.
 * @param candidate The candidate to test.
 */
declare function isAngleSymbol(candidate: any): candidate is AngleSymbol;
/**
* All the Angle symbols.
*/
declare const angleSymbols: readonly ["°", "ʹ", "ʺ", "rad", "grad", "rev"];

/**
 * 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 Angle = Measurement<AngleSymbol>;
declare const angle: Dimension<"°" | "ʹ" | "ʺ" | "rad" | "grad" | "rev">;
declare const degrees: (value: number) => Measurement<"°" | "ʹ" | "ʺ" | "rad" | "grad" | "rev">;
declare const arcMinutes: (value: number) => Measurement<"°" | "ʹ" | "ʺ" | "rad" | "grad" | "rev">;
declare const arcSeconds: (value: number) => Measurement<"°" | "ʹ" | "ʺ" | "rad" | "grad" | "rev">;
declare const radians: (value: number) => Measurement<"°" | "ʹ" | "ʺ" | "rad" | "grad" | "rev">;
declare const gradians: (value: number) => Measurement<"°" | "ʹ" | "ʺ" | "rad" | "grad" | "rev">;
declare const revolutions: (value: number) => Measurement<"°" | "ʹ" | "ʺ" | "rad" | "grad" | "rev">;

export { angle, angleSymbols, arcMinutes, arcSeconds, degrees, gradians, isAngleSymbol, radians, revolutions };
export type { Angle, AngleSymbol };