/**
 * All supported units of length measurement
 */
type LengthUnit = 'meters' | 'kilometers' | 'yards' | 'feet' | 'miles' | 'nautical miles';
declare const FEET: LengthUnit;
declare const KILOMETERS: LengthUnit;
declare const METERS: LengthUnit;
declare const MILES: LengthUnit;
declare const NAUTICAL_MILES: LengthUnit;
declare const YARDS: LengthUnit;
export { LengthUnit, FEET, KILOMETERS, METERS, MILES, NAUTICAL_MILES, YARDS };