/**
 * @todo add fileId as global root identifier
 */
export interface IDataNode {
    readonly engine?: string;
    readonly computed?: boolean;
    readonly path: (string | number)[];
    readonly valueType: string;
    readonly value: any;
    readonly parent: (() => IDataNode) | undefined;
    hydrate?: () => any;
    children?: IDataNodeChildren;
}
export interface IDataNodeComputed extends IDataNode {
    readonly engine: string;
    readonly computed?: true;
}
export type ExtractExprFn = (value: string) => string;
export type IDataNodeChildren<TNode extends IDataNode = IDataNode> = Map<string | number, TNode>;
export declare class DataNode implements IDataNode {
    static readonly engine: IDataNode['engine'];
    readonly engine?: IDataNode['engine'];
    readonly computed?: IDataNode['computed'];
    readonly path: IDataNode['path'];
    readonly valueType: IDataNode['valueType'];
    readonly value: IDataNode['value'];
    readonly parent: IDataNode['parent'];
    children?: IDataNode['children'];
    hydrate?: IDataNode['hydrate'];
    protected readonly extractExpr?: ExtractExprFn;
    constructor(parent: DataNodeObject | undefined, path: IDataNode['path'], valueType: IDataNode['valueType'], value: IDataNode['value'], extractExpr?: ExtractExprFn);
    withHydrate(hydrate: () => any): this;
}
export declare class DataNodeObject extends DataNode {
    children: NonNullable<IDataNode['children']>;
    constructor(parent: DataNodeObject | undefined, path: IDataNode['path'], valueType: IDataNode['valueType'], value: IDataNode['value']);
    append(key: string | number, dataNode: IDataNode): void;
}
export declare function isComputedNode<TNode extends IDataNode>(node: TNode): node is (TNode extends IDataNodeComputed ? TNode & IDataNodeComputed : never);