import * as THREE from "three";
import type { Annotation, ExportOptions } from "./types";
/**
 * Annotation data model + undo stack + export. Pure data, no three / DOM dependencies.
 * Undo only records two atomic operations, add / remove (enough for "undo last add / restore delete").
 * Notifies the UI and render layer via subscribe (the latter reconciles the scene against list()).
 */
export declare class AnnotationStore {
    private items;
    private undoStack;
    private subs;
    private notify;
    subscribe(cb: () => void): () => void;
    add(a: Annotation): void;
    remove(id: string): Annotation | undefined;
    undo(): void;
    /** Clear all, returning the removed items (so the render layer can dispose three objects). */
    clear(): Annotation[];
    list(): Annotation[];
    get(id: string): Annotation | undefined;
    setLabel(id: string, label: string): void;
    setColor(id: string, color: string): void;
    setVisible(id: string, visible: boolean): void;
    /** Notify subscribers after an in-place mutation of an existing annotation (e.g. geodesic edit re-commit). */
    touch(): void;
    toJSON(modelName: string, mesh: THREE.Mesh, opts?: ExportOptions): {
        model: string;
        exportedAt: string;
        space: "local" | "world";
        annotations: Record<string, unknown>[];
    };
}