/**
 * Print a key-value card.
 */
export declare function printCard(title: string, fields: [string, string | undefined][]): void;
/**
 * Print a simple table with headers.
 * Uses ANSI-stripped lengths for column width calculation so chalk colors don't break alignment.
 */
export declare function printTable(headers: string[], rows: string[][]): void;
/**
 * Truncate an address for display.
 */
export declare function shortAddr(addr: string | undefined | null, chars?: number): string;
/**
 * Format a balance value — no scientific notation, proper sig figs for tiny values.
 */
export declare function fmtBalance(value: string | number | undefined | null, symbol: string): string;
/**
 * Format a native token value with USD equivalent in parentheses.
 * e.g. "0.027 ETH (~$57.71)" or "0.412 BNB (~$247.20)"
 */
export declare function fmtNativeWithUsd(value: string | number | undefined | null, symbol: string, priceUsd: number | null | undefined): string;
/**
 * Format a USD value.
 */
export declare function fmtUsd(value: string | undefined | null): string;
/**
 * Format a date string.
 */
export declare function fmtDate(dateStr: string | undefined | null): string;
/**
 * Print a success message.
 */
export declare function success(msg: string): void;
/**
 * Print an error message to stderr.
 */
export declare function error(msg: string): void;
/**
 * Print a warning message.
 */
export declare function warn(msg: string): void;