export interface CaptureClock {
    now(): number;
}
export interface CaptureClockSources {
    wallNow: () => number;
    monotonicNow: () => number;
}
/**
 * Create an epoch-millisecond clock that advances from a monotonic source.
 *
 * Date.now() establishes the epoch once. Subsequent reads use the monotonic
 * delta, so an operating-system clock correction cannot move captured
 * evidence backwards or introduce a discontinuity between an event and media.
 */
export declare function createCaptureClock(sources: CaptureClockSources): CaptureClock;
/** One shared browser clock for events, recordings, and snapshots. */
export declare const systemCaptureClock: CaptureClock;
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