interface Column {
    key: string;
    header: string;
    width?: number;
    format?: (value: unknown) => string;
}
/** Print data as a formatted table */
export declare function table<T extends Record<string, unknown>>(data: T[], columns: Column[]): void;
/** Print JSON output (for --json flag) */
export declare function json(data: unknown): void;
/** Print a key-value detail view */
export declare function detail(pairs: [string, unknown][], indent?: number): void;
/** Print a success message */
export declare function success(message: string): void;
/** Print a warning */
export declare function warn(message: string): void;
/** Print an info message */
export declare function info(message: string): void;
/** Print a header/title */
export declare function header(text: string): void;
/** Format a duration in seconds to human readable */
export declare function formatDuration(seconds: number): string;
/** Format a phone number for display */
export declare function formatPhone(phone: string): string;
/** Format a date string for display */
export declare function formatDate(dateStr: string): string;
/** Truncate text with ellipsis */
export declare function truncate(text: string, maxLen: number): string;
export {};
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