import { type ReactNode, type RefObject } from 'react';
import { type NativeRailItem } from './harness-conversation-layout.js';
export declare const WIDE_CONVERSATION_WIDTH_KEY = "arkme:conversation-content-width:v1";
export interface ConversationRailSpeaker {
    name: string;
    kind: 'human' | 'bot' | 'arko';
    avatarRef: string;
}
export type ConversationRailItem = NativeRailItem & {
    speaker: ConversationRailSpeaker;
    responseSpeaker?: ConversationRailSpeaker;
};
type RailAnchor = ConversationRailItem & {
    element: HTMLElement;
};
/** Only supply preview content; native DSH still owns tooltip/hover/positioning. */
export declare function ConversationRailPreview({ speaker, text, response }: {
    speaker: ConversationRailSpeaker;
    text: string;
    response?: boolean;
}): import("react").JSX.Element;
export declare function conversationRailPreviewItems(items: readonly ConversationRailItem[]): NativeRailItem<ReactNode>[];
/** Project existing rendered history only: no second history store or network read. */
export declare function readConversationRail(viewport: HTMLElement, turns: boolean): RailAnchor[];
export declare function conversationRailActive(viewport: HTMLElement, anchors: readonly RailAnchor[]): number | null;
/** Capture an element, not scrollTop, so reflow does not move history under the reader. */
export declare function preserveConversationReading(viewport: HTMLElement, change: () => void): void;
/** Arkme supplies data/scroll anchors; actual handles, rail and appearance are native DSH. */
export declare function ArkmeWideConversation({ children, enabled, scopeKey, viewportRef, turns, controlsHidden }: {
    children: ReactNode;
    enabled: boolean;
    scopeKey: string;
    viewportRef: RefObject<HTMLDivElement>;
    turns?: boolean;
    controlsHidden?: boolean;
}): import("react").JSX.Element;
export {};
//# sourceMappingURL=ArkmeWideConversation.d.ts.map