export declare const fullMonthNames: string[];
interface FormatDateOption {
    year?: 'full' | 'short' | 'none';
    month?: 'full' | 'short';
}
export declare function formatTimestampToDate(date: Date, { year, month }?: FormatDateOption): string;
interface FormatTimeOption extends FormatDateOption {
    hours?: '24hr' | '12hr';
    seconds?: 'none';
}
export declare function formatTimestamp(date: Date, opt?: FormatTimeOption): string;
interface TimeFormatStrings {
    /** String for "< 1 min" when specifyUnderMinute is true */
    lessThanOneMin?: string;
    /** Function to format seconds: (count: number) => string. Default: "{count} seconds" */
    seconds?: (count: number) => string;
    /** Function to format minutes: (count: number) => string. Default: "{count} min" */
    minutes?: (count: number) => string;
    /** Function to format hours: (count: number) => string. Default: "{count} h" */
    hours?: (count: number) => string;
    /** Function to format short seconds: (count: number) => string. Default: "{count} s" */
    secondsShort?: (count: number) => string;
}
/**
 * Formats seconds to mins and seconds string
 * - seconds = 10, output = '10 seconds'
 * - seconds = 20.3, output = '21 seconds'
 * - seconds = 20.3, specifyUnderMinute=true, output = '< 1 min'
 * - seconds = 60, output = '60 seconds'
 * - seconds = 61, output = '1 min 1 s'
 * - seconds = 300, output = '5 min'
 * - seconds = 320, output = '5 min 20 s'
 * - seconds = 320, omitSeconds=true, output = '6 min'
 * - seconds = 3600, output = '60 min'
 * - seconds = 3900, output = '1 h 5 min'
 * - seconds = 3920, output = '1 h 5 min 20 s'
 *
 * @param seconds - Number of seconds to format
 * @param specifyUnderMinute - If true, shows "< 1 min" for values under 60 seconds
 * @param omitSeconds - If true, rounds up to nearest minute
 * @param i18n - Optional translation strings for internationalization
 */
export declare function formatSecondsToReadableForm(seconds: number, specifyUnderMinute?: boolean, omitSeconds?: boolean, i18n?: TimeFormatStrings): string;
export declare function formatSecondsToCountdownForm(seconds: number): string;
export {};
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