import { SerializedNode } from '@infinite-canvas-tutorial/ecs';
import { AppState } from '../context';
type OrderedExcalidrawElement = SerializedNode;
type ObservedAppState = AppState;
export declare class Snapshot {
    readonly elements: Map<string, SerializedNode>;
    readonly appState: AppState;
    readonly meta: {
        didElementsChange: boolean;
        didAppStateChange: boolean;
        isEmpty?: boolean;
    };
    private constructor();
    static empty(): Snapshot;
    /**
     * Efficiently clone the existing snapshot, only if we detected changes.
     *
     * @returns same instance if there are no changes detected, new instance otherwise.
     */
    maybeClone(elements: Map<string, OrderedExcalidrawElement> | undefined, appState: AppState | ObservedAppState | undefined): Snapshot;
    private maybeCreateAppStateSnapshot;
    private detectChangedAppState;
    private maybeCreateElementsSnapshot;
    /**
     * Detect if there any changed elements.
     *
     * NOTE: we shouldn't just use `sceneVersionNonce` instead, as we need to call this before the scene updates.
     */
    private detectChangedElements;
    /**
     * Perform structural clone, cloning only elements that changed.
     */
    private createElementsSnapshot;
}
/**
 * @see https://github.com/excalidraw/excalidraw/blob/ab89d4c16f53bd1e06cb980c600f0952b7a3d7d3/packages/excalidraw/element/mutateElement.ts#L152
 */
export declare const newElementWith: <TElement extends SerializedNode>(element: TElement, updates: Partial<TElement>, force?: boolean) => TElement;
export {};