import BN from 'bn.js';
export declare function w3Round(num: number, nb: number): number;
export declare function w3FormatBalance(bal: BN, decimals?: number): number;
export declare function w3FormatAddress(value: string, length?: number): string;
export declare const BEER = "🍺";
export declare const BEERS = "🍻";
export declare const donation = 2;
export declare function getPad2(num: number): string;
export declare function getDate(ts: number): string;
export declare function sleep(ms: number): Promise<unknown>;