import { FlagDefinition } from "@oclif/core/interfaces";
/**
 * Represents a duration of time.
 *
 * This class represents a duration of time and offers utility methods around
 * this.
 */
export default class Duration {
    readonly milliseconds: number;
    static relativeFlag: FlagDefinition<Duration>;
    static absoluteFlag: FlagDefinition<Date>;
    private constructor();
    static fromZero(): Duration;
    static fromMilliseconds(milliseconds: number): Duration;
    static fromSeconds(seconds: number): Duration;
    static fromString(input: string): Duration;
    get seconds(): number;
    from(referenceDate: Date): Date;
    fromNow(): Date;
    add(other: Duration): Duration;
    compare(other: Duration): number;
    toString(): string;
}