export declare function assertTaskPrefixPair(taskPrefix: string | undefined, taskColorIndex: number | undefined): void;
export declare function truncate(value: string, maxLength: number): string;
export declare function formatElapsedTime(startTime: string, endTime: string): string;
export declare function detectStepType(step: {
    kind?: string;
    parallel?: unknown;
    arpeggio?: unknown;
    teamLeader?: unknown;
}): 'normal' | 'parallel' | 'arpeggio' | 'team_leader' | 'workflow_call';
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