/**
 * Human-friendly time formatter used by the ruler cursor, navigation
 * control, and bar labels. Mirrors the reference waterfall component's
 * output so labels read consistently.
 *
 *   0.0005 .. 1s   → `ms`
 *   1s .. 60s       → `s.sss`
 *   1m .. 1h       → `m mm.sss`
 *   1h .. 1d       → `h hh mm`
 *   1d .. 30d      → `d d hh mm`
 *   30d .. 365d    → `mo d d hh`
 *   365d+          → `y mo d`
 */
export declare function formatDuration(seconds: number): string;
//# sourceMappingURL=duration.d.ts.map