import { FinishReason, LanguageModelRequestMetadata, LanguageModelUsage, StreamTextResult } from 'ai';

export interface StreamVisitorOption {
    debug?: boolean;
    onStart?: (content: StartContent) => void;
    onStep?: (content: StepContent) => void;
    onReasoning?: (content: ReasoningContent) => void;
    onText?: (content: TextContent) => void;
    onTool?: (content: ToolContent) => void;
    onFinish?: () => void;
}
export interface StartContent {
    running: boolean;
    steps: StepContent[];
    finishReason?: FinishReason;
    totalUsage?: LanguageModelUsage;
    /**  工具内部异常的错误信息 */
    error?: any;
}
export interface StepContent {
    running: boolean;
    contents: (TextContent | ReasoningContent | ToolContent)[];
    finishReason?: FinishReason;
    /** 本轮对话的消耗 */
    usage?: LanguageModelUsage;
    /** 包含本轮对话的请求体 */
    request: LanguageModelRequestMetadata;
}
export interface TextContent {
    type: 'text';
    id: string;
    running: boolean;
    text: string;
}
export interface ReasoningContent {
    type: 'reasoning';
    id: string;
    running: boolean;
    text: string;
}
export interface ToolContent {
    type: 'tool';
    id: string;
    running: boolean;
    toolCallId: string;
    title: string;
    toolName: string;
    /** 不确定输入参数的工具调用 */
    dynamic: boolean | undefined;
    /** 生成tool 调用参数的动态字符串, 在调用 tool 之前，会保存json结果到input属性中 */
    inputStr: string;
    /** 工具参数对象 */
    input: any;
    /** 工具返回值对象 */
    output: any;
    /**  工具内部异常的错误信息 */
    error?: any;
}
/** ai-sdk@v6 的流消息访问者， 暴露响应式的数据，它随着流消息到来逐渐的变化
 * @example
 * const stream = await toolLoopAgent.stream({prompt:'xxxx'})
 * const visitor= new StreamVisitor({
 *                 onStart(content){
 *                       -- 保存这个content
 *                    }
 *                 })
 *
 * await visitor.traverse(stream)
 * const result = await visitor.traverse(stream) // 或者保存此处的 result 的Ref响应数据
 */
export declare class StreamVisitor {
    option: StreamVisitorOption;
    constructor(option?: StreamVisitorOption);
    traverse(stream: StreamTextResult<{}, never>): Promise<import('vue').Ref<StartContent | undefined, StartContent | undefined>>;
}