建议在使用 store 中的属性或操作时使用选择器。

const bears = useBearStore(state => state.bears)

但是,编写这些可能很乏味,但你可以自动生成它们

创建以下函数: createSelectors

import create, { StateCreator, State, StoreApi, UseStore } from 'zustand'

interface Selectors<StoreType> {
  use: {
    [key in keyof StoreType]: () => StoreType[key]
  }
}

function createSelectors<StoreType extends State>(
  store: UseStore<StoreType>,
) {
  ;(store as any).use = {}

  Object.keys(store.getState()).forEach(key => {
    const selector = (state: StoreType) => state[key as keyof StoreType]
    ;(store as any).use[key] = () => store(selector)
  })

  return store as UseStore<StoreType> & Selectors<StoreType>
}

如果你有这样的store:

interface BearState {
  bears: number;
  increase: (by: number) => void;
}

const useStoreBase = create<BearState>((set) => ({
  bears: 0,
  increase: (by) => set((state) => ({ bears: state.bears + by })),
}));

在你的store中应用这个函数:

const useStore = createSelectors(useStoreBase);

现在选择器将自动生成:

// get the property
const bears = useStore.use.bears();

// get the action
const increase = useStore.use.increase();

发表评论

您的电子邮箱地址不会被公开。