import { Request } from '../transport/request.js';
import { HttpResponse, RequestHandler } from '../types.js';
/**
 * Chain of Responsibility pattern implementation for request handlers.
 * Manages a linked chain of handlers that process HTTP requests sequentially.
 */
export declare class RequestHandlerChain {
    /** Array of handlers in the chain */
    private readonly handlers;
    /**
     * Adds a handler to the end of the chain.
     * Links the new handler to the previous one in the chain.
     * @param handler - The request handler to add
     */
    addHandler(handler: RequestHandler): void;
    /**
     * Executes the handler chain for a standard request.
     * @template T - The expected response data type
     * @param request - The HTTP request to process
     * @returns A promise that resolves to the HTTP response
     * @throws Error if no handlers are added to the chain
     */
    callChain<T>(request: Request): Promise<HttpResponse<T>>;
    /**
     * Executes the handler chain for a streaming request.
     * @template T - The expected response data type for each chunk
     * @param request - The HTTP request to process
     * @returns An async generator that yields HTTP responses
     * @throws Error if no handlers are added to the chain
     */
    streamChain<T>(request: Request): AsyncGenerator<HttpResponse<T>>;
}
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