/**
 * Time Formatting Utilities
 *
 * Provides human-readable time formatting for intervals and durations.
 * Used by diagnostics and other time-based features.
 *
 * @example
 * ```typescript
 * import { formatTimeInterval } from './utils/time';
 *
 * formatTimeInterval(86400000);  // "daily"
 * formatTimeInterval(3600000);   // "hourly"
 * formatTimeInterval(7200000);   // "2-hourly"
 * formatTimeInterval(123456);    // "123456ms"
 * ```
 */
/**
 * Common time intervals in milliseconds
 *
 * These constants provide standard time intervals that can be used
 * throughout the codebase for consistency.
 *
 * @example
 * ```typescript
 * const dailyRotation = TIME_INTERVALS.DAY;  // 86400000
 * const hourlyCheck = TIME_INTERVALS.HOUR;   // 3600000
 * ```
 */
export declare const TIME_INTERVALS: {
    /** 1 second in milliseconds */
    readonly SECOND: 1000;
    /** 1 minute in milliseconds */
    readonly MINUTE: number;
    /** 1 hour in milliseconds */
    readonly HOUR: number;
    /** 1 day in milliseconds */
    readonly DAY: number;
    /** 1 week in milliseconds */
    readonly WEEK: number;
};
/**
 * Format milliseconds into human-readable interval string
 *
 * Converts a time interval in milliseconds to a descriptive string
 * that's easier for humans to understand and for logging purposes.
 *
 * **Format Priority:**
 * 1. Weekly intervals (e.g., "weekly", "2-weekly")
 * 2. Daily intervals (e.g., "daily", "3-daily")
 * 3. Hourly intervals (e.g., "hourly", "12-hourly")
 * 4. Minute intervals (e.g., "minutely", "30-minutely")
 * 5. Second intervals (e.g., "every-second", "5-secondly")
 * 6. Custom milliseconds (e.g., "123456ms")
 *
 * @param ms - Milliseconds to format (undefined returns "unknown")
 * @returns Human-readable interval string
 *
 * @example Standard intervals
 * ```typescript
 * formatTimeInterval(86400000);           // "daily"
 * formatTimeInterval(3600000);            // "hourly"
 * formatTimeInterval(604800000);          // "weekly"
 * formatTimeInterval(60000);              // "minutely"
 * ```
 *
 * @example Multiple intervals
 * ```typescript
 * formatTimeInterval(172800000);          // "2-daily" (2 days)
 * formatTimeInterval(7200000);            // "2-hourly" (2 hours)
 * formatTimeInterval(1800000);            // "30-minutely" (30 minutes)
 * ```
 *
 * @example Edge cases
 * ```typescript
 * formatTimeInterval(undefined);          // "unknown"
 * formatTimeInterval(123456);             // "123456ms" (custom)
 * formatTimeInterval(1000);               // "every-second"
 * ```
 */
export declare function formatTimeInterval(ms: number | undefined): string;