import { DurationNode, Sign } from "./types.js";
declare const customInspect: unique symbol;
/**
 * Options for formatting the duration.
 */
export interface DurationOptions {
    /** Whether to explicitly show a positive sign. */
    explicitPositive?: boolean;
    /** The sign to use for zero values. */
    zeroSign?: Sign;
}
/**
 * Represents a duration of time in hours and minutes.
 */
export declare class Duration {
    #private;
    /** Whether to explicitly show a positive sign. */
    explicitPositive: boolean;
    /** The sign to use for zero values. */
    zeroSign: Sign;
    /**
     * Create a new duration.
     * @param hours - The number of hours.
     * @param minutes - The number of minutes.
     * @param options - Formatting options for the duration.
     */
    constructor(hours: number, minutes: number, { explicitPositive, zeroSign }?: DurationOptions);
    /** @internal */
    static fromAST(node: DurationNode): Duration;
    /**
     * Create a new duration from a total number of minutes.
     * @param value - The total number of minutes.
     * @param options - Formatting options for the duration.
     */
    static fromMinutes: (value: number, options?: DurationOptions) => Duration;
    /**
     * The number of minutes in the duration.
     */
    get minutes(): number;
    /**
     * The number of hours in the duration.
     */
    get hours(): number;
    /**
     * The sign of the duration. Takes the `zeroSign` option into account.
     */
    get sign(): Sign;
    /**
     * Add another duration to this duration.
     * @param other - The other duration to add.
     * @returns A new Duration instance representing the sum.
     */
    add(other: this): Duration;
    /**
     * Subtract another duration from this duration.
     * @param other - The other duration to subtract.
     * @returns A new Duration instance representing the difference.
     */
    subtract(other: this): Duration;
    /**
     * Check if this duration is equal to another duration.
     * @param other - The other duration to compare against.
     */
    equals(other: this): boolean;
    /**
     * Render the duration as a Klog string.
     */
    toString(): string;
    /**
     * Convert the duration to a JSON object.
     */
    toJSON(): {
        hours: number;
        minutes: number;
        zeroSign: Sign;
        explicitPositive: boolean;
    };
    /**
     * Converts the duration to minutes.
     */
    toMinutes(): number;
    [customInspect](): string;
}
export {};