import type DateTime from './DateTime.js';
import { type Localization } from './localization.js';
export default class Duration {
    millis: number;
    /**
     * Create a new Duration instance
     *
     * @param duration - The duration in milliseconds
     */
    constructor(millis: number);
    /**
     * Calculate the duration between two dates
     *
     * @param {DateTime} from - The start date
     * @param {DateTime} to - The end date
     */
    static from(from: DateTime, to: DateTime): Duration;
    /**
     * Calculate the duration from now to a date
     *
     * @param {DateTime} to - The end date
     */
    static toNow(to: DateTime): Duration;
    get seconds(): number;
    get minutes(): number;
    get hours(): number;
    get days(): number;
    get weeks(): number;
    toStrByDays(lang?: string | Localization | null): string | null;
    toStr(lang?: string | null): string | null;
}
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