import type { AddUndoSnapshot } from 'roosterjs-editor-types';
/**
 * @internal
 * Call an editing callback with adding undo snapshots around, and trigger a ContentChanged event if change source is specified.
 * Undo snapshot will not be added if this call is nested inside another addUndoSnapshot() call.
 * @param core The EditorCore object
 * @param callback The editing callback, accepting current selection start and end position, returns an optional object used as the data field of ContentChangedEvent.
 * @param changeSource The ChangeSource string of ContentChangedEvent. @default ChangeSource.Format. Set to null to avoid triggering ContentChangedEvent
 * @param canUndoByBackspace True if this action can be undone when user press Backspace key (aka Auto Complete).
 * @param additionalData @optional parameter to provide additional data related to the ContentChanged Event.
 */
export declare const addUndoSnapshot: AddUndoSnapshot;