import * as React from 'react';
export type TimelineIntent = 'neutral' | 'info' | 'success' | 'warning' | 'danger';
export interface TimelineItem {
    id: string;
    timestamp: Date | string;
    title: React.ReactNode;
    description?: React.ReactNode;
    icon?: React.ReactNode;
    intent?: TimelineIntent | undefined;
    meta?: React.ReactNode;
}
export interface TimelineLabels {
    /** Text read for each intent. Neutral reads nothing by default. */
    intent?: Partial<Record<TimelineIntent, string>> | undefined;
}
export interface TimelineProps {
    /** Timeline items in order. */
    items: readonly TimelineItem[];
    /** Direction of the timeline. */
    orientation?: 'vertical' | 'horizontal' | undefined;
    /** Timestamp format: relative ('3 h ago'), absolute, or Intl.DateTimeFormat options. */
    timeFormat?: 'relative' | 'absolute' | Intl.DateTimeFormatOptions | undefined;
    /** Required when timeFormat='relative' on the server (else dev error). */
    now?: Date | number | undefined;
    /** BCP 47 locale used for formatting and parsing. */
    locale?: string | undefined;
    /** IANA zone for absolute and option formats. Default 'UTC', so server
        and client render the same text whatever their host zone is. */
    timeZone?: string | undefined;
    /** Overrides for the built-in, localizable UI strings. */
    labels?: TimelineLabels | undefined;
    /** Accessible name, required when there is no visible label. */
    'aria-label'?: string | undefined;
    /** Class name merged onto the root element. */
    className?: string | undefined;
    /** REQ-CMP-03: resolves to the root part ([data-ag-part=timeline-container]). */
    ref?: React.Ref<HTMLElement> | undefined;
}
export declare const DEFAULT_INTENT_LABELS: Record<TimelineIntent, string>;
export declare function formatTimestamp(ts: Date | string, timeFormat: 'relative' | 'absolute' | Intl.DateTimeFormatOptions, locale: string, now?: Date | number, timeZone?: string): {
    dateTime: string;
    text: string;
};
export declare function Timeline({ items, orientation, timeFormat, now, locale, timeZone, labels, 'aria-label': ariaLabel, className, ref, }: TimelineProps): React.JSX.Element;
export declare namespace Timeline {
    var formatTimestamp: typeof import('./Timeline.js').formatTimestamp;
}
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