import { IpcProcess, IpcActOptions, IpcHandler, EventHandler, NodeSimpleIpcOptions, RemoveHandler } from './types';
export declare class NodeSimpleIpc {
    private ipcProcess;
    private options;
    private rpcEm;
    private eventsEm;
    private registeredRpcNames;
    private messageHandler;
    /**
     * Constructor.
     *
     * @param ipcProcess IPC process (NodeJS.process or ChildProcess). By default "process" will be used.
     * @param options NodeSimpleIpc options.
     */
    constructor(ipcProcess?: IpcProcess, options?: NodeSimpleIpcOptions);
    private onIpcMessage;
    /**
     * Start a RPC request.
     *
     * @param name RPC name.
     * @param data Request data (optional).
     * @param options Request options.
     * @returns The response.
     */
    act<D = unknown>(name: string, data?: unknown, options?: IpcActOptions): Promise<D>;
    /**
     * Add a RPC endpoint.
     *
     * @param name RPC name.
     * @param handlerFn Handler function.
     * @returns Function you can call to remove the RPC endpoint.
     */
    add<I = unknown, O = unknown>(name: string, handlerFn: IpcHandler<I, O>): RemoveHandler;
    /**
     * Adds the listener function to the end of the listeners.
     *
     * @param event Event name.
     * @param handler Listener function.
     * @returns Function you can call to remove the event handler.
     */
    on<T = unknown>(event: string, handler: EventHandler<T>): RemoveHandler;
    /**
     * Adds a one-time listener function for the event. The next time event is triggered, this listener is removed and then invoked.
     *
     * @param event Event name.
     * @param handler Listener function.
     * @returns Function you can call to remove the event handler.
     */
    once<T = unknown>(event: string, handler: EventHandler<T>): RemoveHandler;
    /**
     * Removes the specified listener from the listener array.
     *
     * @param event Event name.
     * @param handler Listener function.
     * @returns Returns a reference to the NodeSimpleIpc.
     */
    off<T = unknown>(event: string, handler: EventHandler<T>): void;
    /**
     * Send an event over IPC.
     *
     * @param event Event name.
     * @param data Event data (optional).
     * @returns The sending result.
     */
    emit(event: string, data?: unknown): boolean;
    /**
     * Send RPC output properties over IPC.
     *
     * @param input Input properties.
     * @param partialOutput Output properties (only data and error).
     * @returns The sending result.
     */
    private sendOutput;
    /**
     * Send RPC input properties over IPC.
     *
     * @param partialInput Input properties.
     * @returns The sending result.
     */
    private sendInput;
}