import { RTCProviderEventHandler } from '../../core/RTCProvider';
/**
 * Base class for RTC providers.
 * Provides common event handling and state management.
 */
export declare abstract class BaseProvider {
    /** Provider name identifier */
    abstract readonly name: string;
    /**
     * Pre-warm a future RTC connection if the provider supports it.
     */
    prepareConnection?(config: import('../../types').RTCPrepareConnectionConfig): Promise<void>;
    /**
     * Connect to RTC server.
     * @param config - Connection configuration
     */
    abstract connect(config: import('../../types').RTCConnectionConfig): Promise<void>;
    /**
     * Disconnect from RTC server.
     */
    abstract disconnect(): Promise<void>;
    /**
     * Get current connection state.
     */
    abstract getConnectionState(): string;
    /**
     * Publish local audio track.
     * @param track - Optional MediaStreamTrack to publish
     */
    abstract publishAudioTrack(track?: MediaStreamTrack): Promise<void>;
    /**
     * Unpublish audio track.
     */
    abstract unpublishAudioTrack(): Promise<void>;
    /**
     * Get the native RTC client object.
     * @returns The native client, or null if not connected
     */
    abstract getNativeClient(): unknown;
    /**
     * Add event listener.
     * @param event - Event name
     * @param handler - Event handler
     */
    on(event: string, handler: RTCProviderEventHandler): void;
    /**
     * Remove event listener.
     * @param event - Event name
     * @param handler - Event handler
     */
    off(event: string, handler: RTCProviderEventHandler): void;
}
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