import type { Message, MessageResponse } from './types.js';
/**
 * Shared communication module for Flutter WebView bridge.
 *
 * @remarks
 * This module manages the message bridge between the web page and Flutter app.
 * It handles callbacks for async messages and event listeners for action notifications.
 * Only one message listener is created regardless of how many plugins are used.
 */
export declare const communication: {
    /** Whether the bridge is initialized and ready */
    readonly isReady: boolean;
    /** Whether running inside Flutter WebView */
    readonly isWebView: boolean;
    /**
     * Initialize or reinitialize the communication bridge.
     * Automatically called on first import if running in Flutter WebView.
     * Call this manually after destroy() to reactivate the bridge.
     */
    init(): void;
    /**
     * Send an async message to Flutter and wait for response.
     * @param message - The message to send
     * @returns Promise resolving to the response
     */
    sendAsync<T extends Record<string, any>>(message: Message): Promise<MessageResponse<T>>;
    /**
     * Send a fire-and-forget message to Flutter.
     * @param message - The message to send
     */
    sendVoid(message: Message): void;
    /**
     * Add an event listener for a specific event/action from Flutter.
     * @param event - The event name to listen for
     * @param listener - The callback function
     */
    on(event: string, listener: (...args: any[]) => void): void;
    /**
     * Remove a specific event listener.
     * @param event - The event name
     * @param listener - The callback function to remove
     */
    off(event: string, listener: (...args: any[]) => void): void;
    /**
     * Remove all event listeners for specific event(s).
     * @param events - Comma-separated list of event names
     */
    offMany(events: string): void;
    /**
     * Clean up all resources to prevent memory leaks.
     * Call this when the bridge is no longer needed.
     */
    destroy(): void;
};
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