import { EventEmitter } from '../../depsNode.native';
import { QAAToSDKEvents, QAEventMap, SDKToQAAEvents } from '../common/types';
/**
 * Global, type-safe Event Bus for QA Assistant ↔ SDK communication.
 * Implements singleton pattern to ensure a single shared instance.
 */
declare class QAEventBus extends EventEmitter {
    private static instance;
    /**
     * SDK and QA Assistant modules.
     */
    private constructor();
    /**
     * Return the singleton instance of the QAEventBus.
     *
     * Usage:
     *   const bus = QAEventBus.getInstance();
     */
    static getInstance(): QAEventBus;
    /**
     * Emit a QA event (typed across both directions).
     *
     * @template K - Key of QAEventMap
     * @param event - Event name (union of QAAToSDKEvents | SDKToQAAEvents)
     * @param data - Payload associated with the event
     */
    emitQAEvent<K extends keyof QAEventMap>(event: K, data?: QAEventMap[K]): void;
    /**
     * Emit an event originating from the QA Assistant to the SDK.
     *
     * @template K - Key of QAAToSDKEvents
     * @param event - Event name in QAAToSDKEvents
     * @param data - Payload for the SDK listener
     */
    emitQAEventToSDK<K extends keyof QAAToSDKEvents>(event: K, data?: QAAToSDKEvents[K]): void;
    /**
     * Emit an event originating from the SDK to the QA Assistant.
     *
     * @template K - Key of SDKToQAAEvents
     * @param event - Event name in SDKToQAAEvents
     * @param data - Payload for the QA Assistant listener
     */
    emitQAEventToQAA<K extends keyof SDKToQAAEvents>(event: K, data?: SDKToQAAEvents[K]): void;
    /**
     * Register a typed listener for any QA event (both directions).
     *
     * Returns a cleanup function that removes the registered listener.
     *
     * @template K - Key of QAEventMap
     * @param event - Event name
     * @param listener - Callback invoked with the event payload
     * @returns cleanup function to remove this listener
     */
    onQAEvent<K extends keyof QAEventMap>(event: K, listener: (data: QAEventMap[K]) => void): () => void;
    /**
     * Register a typed listener for events coming from the QA Assistant to the SDK.
     *
     * Returns a cleanup function that removes the registered listener.
     *
     * @template K - Key of SDKToQAAEvents
     * @param event - Event name from the QA Assistant
     * @param listener - Callback invoked with the event payload
     * @returns cleanup function to remove this listener
     */
    onQAEventFromSDK<K extends keyof SDKToQAAEvents>(event: K, listener: (data: SDKToQAAEvents[K]) => void): () => void;
    /**
     * Register a typed listener for events coming from the SDK to the QA Assistant.
     *
     * Returns a cleanup function that removes the registered listener.
     *
     * @template K - Key of QAAToSDKEvents
     * @param event - Event name from the SDK
     * @param listener - Callback invoked with the event payload
     * @returns cleanup function to remove this listener
     */
    onQAEventFromQAA<K extends keyof QAAToSDKEvents>(event: K, listener: (data: QAAToSDKEvents[K]) => void): () => void;
    /**
     * Remove a specific typed listener for a QA event.
     *
     * @template K - Key of QAEventMap
     * @param event - Event name
     * @param listener - Previously registered listener to remove
     */
    offQAEvent<K extends keyof QAEventMap>(event: K, listener: (data: QAEventMap[K]) => void): void;
    /**
     * Remove all listeners for a given QA event.
     *
     * @template K - Key of QAEventMap
     * @param event - Event name to clear listeners for
     */
    removeAllListenersForEvent<K extends keyof QAEventMap>(event: K): void;
    /**
     * Quick check to determine if QA Assistant is currently active/listening.
     *
     * @returns true if there are active listeners for QA events, false otherwise
     */
    isQAActive(): boolean;
}
export declare const ABTastyQAEventBus: QAEventBus;
export type ABTastyQAEventBusType = typeof ABTastyQAEventBus;
export {};