/**
 * ResponsesToAnthropicProxy — Responses → Anthropic 转换代理
 *
 * Hub-and-spoke 模式：所有格式转换经过 OpenAI Chat 作为中间格式。
 * Responses 请求先转为 Chat 格式，调用 /chat/completions，
 * 响应通过标准化回调输出。
 */
import BaseProxy from './common/BaseProxy';
import type { ResponsesProxyInput, SSECallbacks } from './common/types';
export default class ResponsesToAnthropicProxy extends BaseProxy<ResponsesProxyInput, void, Record<string, unknown>> {
    private callbacks?;
    setCallbacks(callbacks: SSECallbacks): this;
    protected validate(input: ResponsesProxyInput): void;
    protected optimizeInput(input: ResponsesProxyInput): ResponsesProxyInput;
    protected transformRequest(input: ResponsesProxyInput): Record<string, unknown>;
    protected buildEndpoint(_input: ResponsesProxyInput): string;
    protected proxy(input: ResponsesProxyInput, body: Record<string, unknown>, endpoint: string): Promise<void>;
    execute(input: ResponsesProxyInput, callbacks?: SSECallbacks): Promise<void>;
}
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