import BN from "bn.js";
import { NumberType, u64 } from "../constants";
/**
 * @deprecated, will be removed in a future release,
 * instead, directly use BinaryWriter,
 * e.g.
 * const writer = new BinaryWriter()
 * writer.writeU8(data)
 */
export declare const serializeNum: (data: number | string, numberType: NumberType) => Uint8Array | "Invalid data";
/**
 * @deprecated, will be removed in a future release,
 * instead, directly use BinaryReader,
 * e.g.
 * const reader = new BinaryReader(Buffer.from(data))
 * reader.readU8()
 */
export declare const deserializeNum: (data: Uint8Array, numberType: NumberType) => number | BN | null;
/**
 * Convert an unsigned integer or string to amount as u64. Throw error if
 * the input is not an unsigned integer
 * @param num unsigned integer
 * @returns u64 integer
 */
export declare const safeUint: (num: number | string) => u64;
export { u64 };