export type FormatRelativeTimeOptions = {
    /** BCP 47 locale passed to Intl.RelativeTimeFormat. Defaults to "en". */
    locale?: string;
    /** Intl style: "narrow" keeps the compact "5m ago" feel; "long" spells units out. */
    style?: Intl.RelativeTimeFormatStyle;
};
/**
 * Format a timestamp relative to now ("5m ago", "in 2 hr", …), localized via
 * Intl.RelativeTimeFormat; durations of a week or more roll up to
 * weeks/months/years ("3w ago", "1mo ago"). Handles future timestamps;
 * returns "" for unparseable input.
 *
 * Distinct from `@bota-apps/utils/time`' `formatRelativeTime`, which
 * is date-fns-based and long-form ("3 hours ago"): this one is the compact
 * display-layer variant used by `DateTime mode="relative"`.
 */
export declare function formatRelativeTime(timestamp: string | number | Date, options?: FormatRelativeTimeOptions): string;
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