export declare class OpenRouter {
    constructor(config?: any);
    chat: {
        sendChatCompletion: jest.Mock<any, any, any>;
    };
}
export declare class EventStream {
    constructor(stream?: any);
    [Symbol.asyncIterator](): AsyncGenerator<{
        type: string;
        data: {
            id: string;
            choices: {
                delta: {
                    content: string;
                    role: string;
                };
                finish_reason: null;
            }[];
        };
    }, void, unknown>;
}