/**
 * RESP2 encoder: encode responses for wire output.
 * All string/bulk values are written as-is (binary-safe when Buffer).
 */
import type { RespValue } from '../types.ts';
/**
 * Encode a value to RESP2 format.
 * - null -> null bulk string ($-1\r\n)
 * - number/BigInt -> integer (:\r\n)
 * - string/Buffer -> bulk string
 * - array -> array
 */
export declare function encode(value: RespValue): Buffer;
/**
 * Encode simple string (no bulk; for +OK style).
 */
export declare function encodeSimpleString(s: string): Buffer;
/**
 * Encode error message.
 */
export declare function encodeError(message: string): Buffer;
/**
 * Encode integer.
 */
export declare function encodeInteger(n: number): Buffer;
/**
 * Encode bulk string (binary-safe). Null -> $-1\r\n
 */
export declare function encodeBulk(value: Buffer | string | null | undefined): Buffer;
/**
 * Encode array of values (each encoded with encode).
 */
export declare function encodeArray(arr: RespValue[]): Buffer;