import { TimeZone } from '../types/time';
/**
 * Used for helper functions handling time zones.
 *
 * @public
 */
export interface TimeZoneOptions {
    /**
     * Specify this if you want to override the timeZone used when parsing or formatting
     * a date and time value. If no timeZone is set, the default timeZone for the current
     * user is used.
     */
    timeZone?: TimeZone;
}
/**
 * The type describing date and time options. Used for all the helper functions
 * available to parse or format date and time values.
 *
 * @public
 */
export interface DateTimeOptions extends TimeZoneOptions {
    /**
     * Specify a {@link https://momentjs.com/docs/#/displaying/format | momentjs} format to
     * use a custom formatting pattern or parsing pattern. If no format is set,
     * then system configured default format is used.
     */
    format?: string;
}
/**
 * The type to describe the time zone resolver function that will be used to access
 * the default time zone of a user.
 *
 * @public
 */
export type TimeZoneResolver = () => TimeZone | undefined;
/**
 * Used by Grafana internals to set the {@link TimeZoneResolver} to access the current
 * user timeZone.
 *
 * @internal
 */
export declare const setTimeZoneResolver: (resolver: TimeZoneResolver) => void;
/**
 * Used to get the current selected time zone. If a valid time zone is passed in the
 * options it will be returned. If no valid time zone is passed either the time zone
 * configured for the user account will be returned or the default for Grafana.
 *
 * @public
 */
export declare const getTimeZone: <T extends TimeZoneOptions>(options?: T) => TimeZone;