import { type DXN } from '@dxos/keys';
export declare const formatDuration: (duration: number) => string;
/**
 * Extracts the UUID part from a DXN.
 * @param dxn The DXN to extract the UUID from.
 * @returns The UUID part of the DXN, or undefined if the DXN is undefined or invalid.
 */
export declare const getUuidFromDxn: (dxn: DXN | string | undefined) => string | undefined;
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