Todo Reducer with todo interface

todo.reducer.ts

export function todoReducer(
  state: ITodoState = initialTodoState,
  action: TodoActions
): ITodoState {
  switch (action.type) {
    case TodoActionTypes.AddTodo: {
      const todo = {
        ...action.payload.todo,
        id: uuid()
      };
      return todoAdapter.addOne(todo, state);
    }
    case TodoActionTypes.DeleteTodo: {
      return todoAdapter.removeOne(action.payload.id, state);
    }
    case TodoActionTypes.UpdateDescription: {
      return todoAdapter.updateOne(action.payload, state);
    }
    case TodoActionTypes.ToggleComplete: {
      return todoAdapter.updateOne(action.payload, state);
    }
    case TodoActionTypes.MarkAllAsComplete: {
      return todoAdapter.updateMany(action.payload, state);
    }
    default:
      return state;
  }
}