export declare function truncateStr(str: string, headLen?: number, tailLen?: number): string;
export declare function truncateHash(hash: string, headLen?: number, tailLen?: number): string;
export declare function toObject(value: any): any;
export declare function formatTokenUrl(pattern?: string, address?: string): string;
export declare function formatFeeAmount(amount: string | number): string;
export declare function utf8ToHex(utf8Str: any): string;
