import ReducerRegistry from '../redux/ReducerRegistry'; import { SET_LAST_N } from './actionTypes'; export interface ILastNState { lastN?: number; } ReducerRegistry.register('features/base/lastn', (state = {}, action): ILastNState => { switch (action.type) { case SET_LAST_N: { const { lastN } = action; return { ...state, lastN }; } } return state; });