import { IBaseDateValue } from "../type-specific-interfaces/base-date-value";
import { ReadValue } from "./read-value";
/**
 * @category Internal
 */
export declare class ParseReadDateValue extends ReadValue implements IBaseDateValue {
    datestring: string;
    calendar: string;
    startDay?: number;
    startMonth?: number;
    startYear: number;
    startEra?: string;
    endDay?: number;
    endMonth?: number;
    endYear: number;
    endEra?: string;
}
/**
 * Precision of a date.
 *
 * @category Model V2
 */
export declare enum Precision {
    /**
     * Year precision (first to last day of the year).
     */
    yearPrecision = 0,
    /**
     * Month precision (first to last day of the month).
     */
    monthPrecision = 1,
    /**
     * Day precision.
     */
    dayPrecision = 2
}
/**
 * Represents a Salsah date object with a precision information.
 *
 * @category Model V2
 */
export declare class KnoraDate {
    readonly calendar: string;
    readonly era: string;
    readonly year: number;
    readonly month?: number | undefined;
    readonly day?: number | undefined;
    private static separator;
    readonly precision: Precision;
    constructor(calendar: string, era: string, year: number, month?: number | undefined, day?: number | undefined);
}
/**
 * Represents a period (with start date and end date).
 *
 * @category Model V2
 */
export declare class KnoraPeriod {
    readonly start: KnoraDate;
    readonly end: KnoraDate;
    constructor(start: KnoraDate, end: KnoraDate);
}
/**
 * @category Model V2
 */
export declare class ReadDateValue extends ReadValue {
    date: KnoraDate | KnoraPeriod;
    constructor(date: ParseReadDateValue);
    /**
     * Determines if an era is given.
     * Returns "noEra" in case none is given (the given calendar date does not have an era).
     *
     * @param era given era, if any.
     */
    private handleEra;
}