/**
 * AwsMessagingClient — HTTP-based messaging with AWS Lambda Function URL deployments.
 *
 * Lambda Function URLs expose:
 *   POST /        → deliver a payload via the function URL; response body is the result
 *   GET  /health  → liveness probe (returns 200 if handler responds ok)
 *
 * Security:
 *  - Only https:// endpoints are permitted
 *  - Private/internal IP ranges are blocked (prevents SSRF)
 *  - Response bodies are capped at 4 MiB
 *  - Prototype-polluting keys in remote JSON payloads are rejected
 */
import type { Message } from '../../types.js';
export declare class AwsMessagingClient {
    private messageHandlers;
    private connected;
    private apiToken;
    connect(secretKey: string): Promise<void>;
    disconnect(): void;
    send(functionUrl: string, payload: unknown): Promise<void>;
    onMessage(handler: (msg: Message) => void): () => void;
    isLive(functionUrl: string): Promise<boolean>;
    get isConnected(): boolean;
}
//# sourceMappingURL=client.d.ts.map