import type { AddUndoSnapshot } from 'roosterjs-content-model-types';
/**
 * @internal
 * Add an undo snapshot to current undo snapshot stack
 * @param core The EditorCore object
 * @param canUndoByBackspace True if this action can be undone when user press Backspace key (aka Auto Complete).
 * @param entityStates @optional Entity states related to this snapshot.
 * Each entity state will cause an EntityOperation event with operation = EntityOperation.UpdateEntityState
 * when undo/redo to this snapshot
 */
export declare const addUndoSnapshot: AddUndoSnapshot;