import { IMetar } from "metar-taf-parser";
/**
 * Enumeration representing different flight rules categories.
 *
 * @enum {string}
 * @readonly
 * @property {string} VFR - Visual Flight Rules
 * @property {string} MVFR - Marginal Visual Flight Rules
 * @property {string} IFR - Instrument Flight Rules
 * @property {string} LIFR - Low Instrument Flight Rules
 */
export declare enum FlightRules {
    VFR = "VFR",
    MVFR = "MVFR",
    IFR = "IFR",
    LIFR = "LIFR"
}
/**
 * Represents a distance measurement.
 *
 * @interface Distance
 * @property {number} value - The numerical value of the distance.
 * @property {'m'|'sm'} unit - The unit of measurement, either meters ('m') or statute miles ('sm').
 */
interface Distance {
    value: number;
    unit: 'm' | 'sm';
}
/**
 * Represents atmospheric pressure information.
 *
 * @interface Pressure
 * @property {number} value - The numeric value of the pressure measurement
 * @property {'hPa' | 'inHg'} unit - The unit of measurement for pressure, either hectopascals (hPa) or inches of mercury (inHg)
 */
interface Pressure {
    value: number;
    unit: 'hPa' | 'inHg';
}
/**
 * Interface representing METAR (Meteorological Terminal Aviation Routine Weather Report) data.
 *
 * Contains parsed weather data from a METAR report, including station identification,
 * observation time, flight rules category, and various weather parameters.
 *
 * @interface MetarData
 * @property {string} station - The ICAO code of the reporting station
 * @property {Date} observationTime - The date and time when the observation was made
 * @property {FlightRules} flightRules - The flight rules category (VFR, MVFR, IFR, LIFR)
 * @property {string} raw - The raw METAR text string
 * @property {number} [windDirection] - Wind direction in degrees
 * @property {number} [windDirectionMin] - Minimum wind direction in degrees (for variable wind direction)
 * @property {number} [windDirectionMax] - Maximum wind direction in degrees (for variable wind direction)
 * @property {number} [windSpeed] - Wind speed in the units used in the METAR (typically knots)
 * @property {number} [windGust] - Wind gust speed in the same units as windSpeed
 * @property {number} [temperature] - Temperature in degrees Celsius
 * @property {number} [dewpoint] - Dewpoint temperature in degrees Celsius
 * @property {number} [visibility] - Visibility in statute miles or meters (depends on country)
 * @property {number} [qnh] - Barometric pressure (QNH) in hPa or inHg (depends on country)
 * @property {number} [ceiling] - Height of the lowest broken or overcast cloud layer in feet
 */
export interface MetarData {
    station: string;
    observationTime: Date;
    flightRules: FlightRules;
    raw: string;
    windDirection?: number;
    windDirectionMin?: number;
    windDirectionMax?: number;
    windSpeed?: number;
    windGust?: number;
    temperature?: number;
    dewpoint?: number;
    visibility?: Distance;
    qnh?: Pressure;
    ceiling?: number;
}
/**
 * Converts a METAR object to a MetarData object.
 *
 * @param metar The METAR object
 * @returns The MetarData object
 */
export declare function fromIMetar(metar: IMetar): MetarData;
/**
 * Converts a MetarData object to a METAR string.
 *
 * @param metarData The MetarData object
 * @returns The METAR string
 */
export declare function formatWind(metarData: MetarData): string;
/**
 * Converts a MetarData object to a METAR string.
 *
 * @param metarData The MetarData object
 * @returns The METAR string
 */
export declare function formatTemperature(metarData: MetarData): string;
/**
 * Converts a MetarData object to a METAR string.
 *
 * @param metarData The MetarData object
 * @returns The METAR string
 */
export declare function formatDewpoint(metarData: MetarData): string;
/**
 * Converts a MetarData object to a METAR string.
 *
 * @param metarData The MetarData object
 * @returns The METAR string
 */
export declare function formatVisibility(metarData: MetarData): string;
/**
 * Converts a MetarData object to a METAR string.
 *
 * @param metarData The MetarData object
 * @returns The METAR string
 */
export declare function formatQNH(metarData: MetarData): string;
/**
 * Converts a MetarData object to a METAR string.
 *
 * @param metarData The MetarData object
 * @returns The METAR string
 */
export declare function formatCeiling(metarData: MetarData): string;
/**
 * Returns a color string corresponding to the given flight rules.
 *
 * @param flightRules - The flight rules to convert to a color
 * @returns A string representing the color associated with the flight rules:
 *          - 'green' for VFR (Visual Flight Rules)
 *          - 'blue' for MVFR (Marginal Visual Flight Rules)
 *          - 'red' for IFR (Instrument Flight Rules)
 *          - 'purple' for LIFR (Low Instrument Flight Rules)
 *          - 'black' for any undefined flight rules
 */
export declare function colorizeFlightRules(flightRules: FlightRules): string;
export {};