/**
 * 流状态管理器
 *
 * 统一管理流式响应相关的所有状态，包括：
 * - 内容快照
 * - 工具状态
 * - 时间线
 * - 关联缓存
 */
export type ToolRuntimeState = {
    name: string;
    status: 'pending' | 'running' | 'completed' | 'failed';
    output?: string;
    kind?: 'tool' | 'subtask';
};
export type TimelineSegment = {
    type: 'text';
    text: string;
} | {
    type: 'reasoning';
    text: string;
} | {
    type: 'tool';
    name: string;
    status: ToolRuntimeState['status'];
    output?: string;
    kind?: 'tool' | 'subtask';
} | {
    type: 'note';
    text: string;
    variant?: 'retry' | 'compaction' | 'question' | 'error' | 'permission';
};
export type StreamTimelineState = {
    order: string[];
    segments: Map<string, TimelineSegment>;
};
type ContentSnapshot = {
    text: string;
    thinking: string;
};
export declare const CORRELATION_CACHE_TTL_MS: number;
export declare class StreamStateManager {
    private streamContentMap;
    private reasoningSnapshotMap;
    private textSnapshotMap;
    private retryNoticeMap;
    private errorNoticeMap;
    private streamCardMessageIdsMap;
    private toolCallChatMap;
    private messageChatMap;
    private streamToolStateMap;
    private streamTimelineMap;
    getContent(bufferKey: string): ContentSnapshot | undefined;
    setContent(bufferKey: string, content: ContentSnapshot): void;
    getReasoningSnapshot(bufferKey: string): string | undefined;
    setReasoningSnapshot(bufferKey: string, snapshot: string): void;
    getTextSnapshot(bufferKey: string): string | undefined;
    setTextSnapshot(bufferKey: string, snapshot: string): void;
    getRetryNotice(bufferKey: string): string | undefined;
    setRetryNotice(bufferKey: string, notice: string): void;
    getErrorNotice(bufferKey: string): string | undefined;
    setErrorNotice(bufferKey: string, notice: string): void;
    getCardMessageIds(bufferKey: string): string[] | undefined;
    setCardMessageIds(bufferKey: string, ids: string[]): void;
    getChatIdByToolCall(toolCallId: string): string | undefined;
    setToolCallChat(toolCallId: string, chatId: string): void;
    getChatIdByMessage(messageId: string): string | undefined;
    setMessageChat(messageId: string, chatId: string): void;
    getToolStates(bufferKey: string): Map<string, ToolRuntimeState> | undefined;
    setToolStates(bufferKey: string, states: Map<string, ToolRuntimeState>): void;
    getTimeline(bufferKey: string): StreamTimelineState | undefined;
    getOrCreateTimeline(bufferKey: string): StreamTimelineState;
    trimTimeline(timeline: StreamTimelineState): void;
    upsertTimelineSegment(bufferKey: string, segmentKey: string, segment: TimelineSegment): void;
    clear(bufferKey: string): void;
    clearAll(): void;
    cleanupExpiredCorrelations(): void;
}
export declare const streamStateManager: StreamStateManager;
export {};
//# sourceMappingURL=stream-state.d.ts.map