/**
 * @zhin.js/ai - Anthropic Provider
 * 支持 Claude 系列模型
 */
import { BaseProvider } from './base.js';
import type { ProviderConfig, ChatCompletionRequest, ChatCompletionResponse, ChatCompletionChunk } from '../types.js';
export interface AnthropicConfig extends ProviderConfig {
    anthropicVersion?: string;
}
export declare class AnthropicProvider extends BaseProvider {
    name: string;
    models: string[];
    contextWindow: number;
    capabilities: {
        vision: boolean;
        streaming: boolean;
        toolCalling: boolean;
        thinking: boolean;
    };
    private baseUrl;
    private anthropicVersion;
    constructor(config?: AnthropicConfig);
    protected fetch<T>(url: string, options?: RequestInit & {
        json?: unknown;
    }): Promise<T>;
    chat(request: ChatCompletionRequest): Promise<ChatCompletionResponse>;
    chatStream(request: ChatCompletionRequest): AsyncIterable<ChatCompletionChunk>;
    listModels(): Promise<string[]>;
}
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