export type GraphNodeFrontmatter = {
    title: string;
    description: string;
    parents: string[];
    createdAt: number;
    updatedAt: number;
};
export type GraphNode = {
    id: string;
    frontmatter: GraphNodeFrontmatter;
    content: string;
    refs: string[];
};
export type GraphTree = {
    root: GraphNode;
    children: Map<string, GraphNode[]>;
};
export declare const GRAPH_ROOT_NODE_ID = "__root__";
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