import { GNHashtable } from "./../common/GNData";
/**
 * Low-level container for a server-pushed event delivered over the
 * socket transport.
 *
 * The SDK builds one of these in {@link SocketPeer.onEventHandler}
 * for every decoded event frame, then dispatches it to:
 * - the single-slot raw observer registered through
 *   {@link GNNetwork.setOnEventHandler}; and
 * - every typed {@link IServerEventHandler} whose `getEventCode()`
 *   matches the event's code.
 *
 * Events are different from responses in two ways: they carry no
 * `responseId` (server-initiated, no correlation needed), and they
 * have no return code (events are not requests so there is nothing
 * to fail).
 */
export declare class OperationEvent {
    private eventCode;
    private parameters;
    /**
     * @param eventCode  Event code carried by the frame; usually a
     *                   constant from {@link EventCode}.
     * @param parameters Optional parameter bag. Defaults to `null`
     *                   for events with no payload.
     */
    constructor(eventCode: string, parameters?: GNHashtable);
    /**
     * Returns the event code that the SDK uses to look up
     * registered handlers.
     */
    getEventCode(): string;
    /**
     * Returns the event parameter bag, or `null` for parameter-less
     * events.
     *
     * Typed handlers usually feed this through
     * {@link ConverterService.deserializeObject} to obtain a
     * strongly typed payload.
     */
    getParameters(): GNHashtable;
    /**
     * Adds or replaces a single parameter on the existing parameter
     * bag.
     *
     * Note that this method assumes the parameter bag is non-null —
     * if the event was constructed without one, call
     * {@link setParameters} first.
     */
    setParameter(k: string, value: any): OperationEvent;
    /**
     * Replaces the entire parameter bag.
     */
    setParameters(parameters: GNHashtable): OperationEvent;
    /**
     * Returns a debug-friendly summary used by the
     * `[GN Socket EVENT]` log line.
     */
    toString(): string;
}