/**
 * ChatToAnthropicProxy — Chat Completions → Anthropic Messages 转换代理
 *
 * 将 OpenAI Chat Completions 格式的请求转换为 Anthropic Messages API 格式，
 * 发送到上游 /v1/messages 端点，响应通过标准化回调输出。
 */
import BaseProxy from './common/BaseProxy';
import type { ChatCompletionsProxyInput, SSECallbacks } from './common/types';
export default class ChatToAnthropicProxy extends BaseProxy<ChatCompletionsProxyInput, void, Record<string, unknown>> {
    private callbacks?;
    setCallbacks(callbacks: SSECallbacks): this;
    protected validate(input: ChatCompletionsProxyInput): void;
    protected optimizeInput(input: ChatCompletionsProxyInput): ChatCompletionsProxyInput;
    protected transformRequest(input: ChatCompletionsProxyInput): Record<string, unknown>;
    protected buildEndpoint(_input: ChatCompletionsProxyInput): string;
    protected proxy(input: ChatCompletionsProxyInput, body: Record<string, unknown>, endpoint: string): Promise<void>;
    /**
     * Anthropic SSE 流解析 — 将上游 Anthropic SSE 事件通过 callbacks 输出
     */
    private parseAnthropicStream;
    execute(input: ChatCompletionsProxyInput, callbacks?: SSECallbacks): Promise<void>;
}
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