/**
 * Chat handler for conversational spec planning
 * Uses Server-Sent Events (SSE) for streaming responses
 */
import type { Message, CodebaseContext, SpecReference } from "./types.js";
export interface ChatInput {
    messages: Message[];
    codebaseContext: CodebaseContext;
    repoPath: string;
}
export interface GeneratedSpec {
    title: string;
    content: string;
    extends?: SpecReference[];
}
export interface QuestionOption {
    label: string;
    description?: string;
}
export interface Question {
    id: string;
    text: string;
    options: QuestionOption[];
    multiSelect: boolean;
}
export interface ChatStreamEvent {
    type: "text" | "spec" | "question" | "done" | "error";
    text?: string;
    spec?: GeneratedSpec;
    question?: Question;
    error?: string;
}
/**
 * Create an SSE stream for chat responses
 */
export declare function createChatStream(input: ChatInput, abortController?: AbortController): Promise<ReadableStream<Uint8Array>>;
/**
 * Create a simple non-streaming chat response (for testing/fallback)
 */
export declare function runChat(input: ChatInput, abortController?: AbortController): Promise<{
    response: string;
    spec?: GeneratedSpec;
    question?: Question;
}>;
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