undo method

bool undo()

Reverts the most recent state change.

Implementation

bool undo() {
  if (_undoStack.isEmpty) return false;
  final change = _undoStack.removeLast();
  _redoStack.add(change);
  _applyRestore(change, isUndo: true);
  LevitReactiveMiddleware.runWithoutMiddleware(() => _version.value++);
  return true;
}