/// declare class Undo { private stackSize; private dmp; private wysiwyg; private ir; private sv; constructor(); clearStack(vditor: IVditor): void; resetIcon(vditor: IVditor): void; undo(vditor: IVditor): void; redo(vditor: IVditor): void; recordFirstPosition(vditor: IVditor, event: KeyboardEvent): void; addToUndoStack(vditor: IVditor): void; private renderDiff; private resetStack; private addCaret; } export { Undo };