/// <reference types="node" />
/// <reference types="node" />
import { Bert } from "./bert.js";
import { Duplex } from "node:stream";
type WriteCallback = (error: Error | null | undefined) => void;
type ServerHandlerCallback = (reply: "reply" | "noreply", ...extraArgs: any[]) => any;
type ServerHandler = (term: any, from: any, state: any, callback: ServerHandlerCallback) => void;
/**
 * Only handles Buffers.
 */
export declare class DumbPort extends Duplex {
    private static readonly LEN_LEN;
    private buf;
    constructor();
    _read(): Buffer | null;
    _write(obj: any, encodingOrCallback?: BufferEncoding | WriteCallback, callback?: WriteCallback | undefined): void;
}
/**
 * Handles full Erlang/Elixir terms.
 */
export declare class Port extends Duplex {
    readonly bert: Bert;
    private lenBuffer;
    constructor(allBinariesAsString?: boolean, mapKeyAsAtom?: boolean, decodeUndefinedValues?: boolean);
    _read(): any;
    _write(obj: any, encodingOrCallback?: BufferEncoding | WriteCallback, callback?: WriteCallback | undefined): boolean;
}
export declare class Server {
    private port;
    private handler;
    private state;
    private handleTerm;
    constructor(port: Port, handler: ServerHandler);
}
export {};