import type { ConversationMessageNode } from "./chatgpt-client.js";
export type RichLink = {
    kind: "web" | "image" | "sandbox";
    url: string;
    title: string | null;
};
export type RichCitation = {
    url: string;
    title: string | null;
    attribution: string | null;
    reference_type: string;
};
export type RichDiagram = {
    format: "mermaid";
    source: string;
};
export type RichAsset = {
    asset_id: string;
    kind: "image" | "file";
    name: string | null;
    mime_type: string | null;
    size_bytes: number | null;
    width: number | null;
    height: number | null;
};
export type MessageRichContent = {
    links?: RichLink[];
    citations?: RichCitation[];
    diagrams?: RichDiagram[];
    assets?: RichAsset[];
};
export type ConversationAssetReference = {
    asset: RichAsset;
    fileId: string;
};
export type ExtractedMessageContent = {
    text: string;
    richContent: MessageRichContent | null;
    assetReferences: ConversationAssetReference[];
};
export declare function extractMessageContent(node: ConversationMessageNode, conversationId: string): ExtractedMessageContent;