import type { HsonNode } from "../../core/types.js";
import type { HsonCanonical } from "../transform/transform.types.js";
/**
 * One immutable exact canonical Hson value in document context.
 *
 * Zero, one, and many top-level items are the same document semantic kind;
 * `_hson_root` is private structural machinery rather than authored content.
 */
export declare class HsonDocument {
    private readonly hsonDocumentNominal;
    private constructor();
    /** Parse exact document-context Hson, including zero-length empty documents. */
    static fromHson(source: HsonCanonical): HsonDocument;
    /** Safely copy and admit exact notation-closed document-context Hson. */
    static fromNode(node: HsonNode): HsonDocument;
    /** Exact canonical graph equality with no serialization or normalization. */
    equals(other: HsonDocument): boolean;
    /** Serialize the complete document through the owned-document Hson boundary. */
    toHson(): HsonCanonical;
    /** Return a fresh mutable detached clone of the always-rooted document graph. */
    toNode(): HsonNode;
}
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