/**
 * This code was derived from https://github.com/sindresorhus/parse-ms/tree/a18636bb609793326a1bd8d541aad49f715f0a40
 * and https://github.com/sindresorhus/pretty-ms/tree/763fe075d8a62aa8d9ee603bfad2f3107c3a9f02.
 * It is available under the MIT license.
 */
/**
 * Options for the `formatMilliseconds` function.
 */
export interface FormatMillisecondsOptions {
    /**
     * Number of digits to appear after the seconds decimal point.
     */
    secondsDecimalDigits?: number;
    /**
     * Number of digits to appear after the milliseconds decimal point.
     *
     * Useful in combination with [`process.hrtime()`](https://nodejs.org/api/process.html#process_process_hrtime).
     */
    millisecondsDecimalDigits?: number;
    /**
     * Keep milliseconds on whole seconds: `13s` → `13.0s`.
     *
     * Useful when you are showing a number of seconds spent on an operation and don't want the width of the output to change when hitting a whole number.
     */
    keepDecimalsOnWholeSeconds?: boolean;
    /**
     * Only show the first unit: `1h 10m` → `1h`.
     *
     * Also ensures that `millisecondsDecimalDigits` and `secondsDecimalDigits` are both set to `0`.
     */
    compact?: boolean;
    /**
     * Number of units to show. Setting `compact` to `true` overrides this option.
     */
    unitCount?: number;
    /**
     * Use full-length units: `5h 1m 45s` → `5 hours 1 minute 45 seconds`.
     */
    verbose?: boolean;
    /**
     * Show milliseconds separately. This means they won't be included in the decimal part of the seconds.
     */
    separateMilliseconds?: boolean;
    /**
     * Show microseconds and nanoseconds.
     */
    formatSubMilliseconds?: boolean;
    /**
     * Display time using colon notation: `5h 1m 45s` → `5:01:45`. Always shows time in at least minutes: `1s` → `0:01`
     *
     * Useful when you want to display time without the time units, similar to a digital watch.
     *
     * Setting `colonNotation` to `true` overrides the following options to `false`:
     * - `compact`
     * - `formatSubMilliseconds`
     * - `separateMilliseconds`
     * - `verbose`
     */
    colonNotation?: boolean;
}
/**
 * Convert milliseconds to a human readable string: `1337000000` → `15d 11h 23m 20s`.
 * @param milliseconds - Milliseconds to humanize.
 * @param options - Options for humanizing the milliseconds.
 * @returns The humanized string.
 * @example
 * ```
 * import formatMilliseconds from '@oliversalzburg/js-utils/format/milliseconds.js';
 *
 * formatMilliseconds(1337000000);
 * //=> '15d 11h 23m 20s'
 *
 * formatMilliseconds(1337);
 * //=> '1.3s'
 *
 * formatMilliseconds(133);
 * //=> '133ms'
 *
 * // `compact` option
 * formatMilliseconds(1337, {compact: true});
 * //=> '1s'
 *
 * // `verbose` option
 * formatMilliseconds(1335669000, {verbose: true});
 * //=> '15 days 11 hours 1 minute 9 seconds'
 *
 * // `colonNotation` option
 * formatMilliseconds(95500, {colonNotation: true});
 * //=> '1:35.5'
 *
 * // `formatSubMilliseconds` option
 * formatMilliseconds(100.400080, {formatSubMilliseconds: true})
 * //=> '100ms 400µs 80ns'
 *
 * // Can be useful for time durations
 * formatMilliseconds(new Date(2014, 0, 1, 10, 40) - new Date(2014, 0, 1, 10, 5))
 * //=> '35m'
 * ```
 */
export declare const formatMilliseconds: (milliseconds: number | bigint, options?: Readonly<FormatMillisecondsOptions>) => string;