如何在 Vuex 4 和 TypeScript 中使用其他存储模块 getter/actions/mutations

Question

我正在使用 TypeScript 和 Vuex4 开发一个 Vue 3 项目。 现在，我正在使用带有 TS 的 vuex 中的每个商店模块使用样板声明方法。 看起来像这样： 或者如果我的代码可读性不够，这里是我用来指导我的：https://betterprogramming.pub/the-state-of-typed-vuex-the-cleanest-approach-2358ee05d230

//#region Store
export const state: State = {
  stateVar: null,
  isError: false,
};

export const getters: GetterTree<State, RootState> & Getters = {
  getStateVar: state => state.stateVar,
  getIsError: state => state.isError,
};

export const mutations: MutationTree<State> & Mutations = {
  [ModuleMutationTypes.setStateVar](state: State, payload: StateVarType) {
    state.stateVar = payload;
  },
  [ModuleMutationTypes.setIsError](state: State, payload: boolean) {
    state.isError = payload;
  },
};

export const actions: ActionTree<State, RootState> & Actions = {
  async [ModuleActionTypes.doRequest]({ commit, getters }) {
    //do something and commit it 
    // for example here i would like to access the getters or action from another store how is that possible 
    commit(ModuleMutationTypes.setStateVar, someValue);
  },
};
//#endregion Store

//#region Store Type
export type State = {
  someStateVar: SomeStateVarType;
  isError: boolean;
};

export type Getters = {
  getStateVar(state: State): someStateVarType;
  getIsError(state: State): boolean;
};

export type Mutations<S = State> = {
  [ModuleMutationTypes.setStateVar](state: S, payload: SomeSTateVarType): void;
  [ModuleMutationTypes.setIsError](state: S, payload: boolean): void;
};

export interface Actions {
  [ModuleActionTypes.doRequest](context: AugmentedActionContext): Promise<any>;
}

type AugmentedActionContext = {
  commit<K extends keyof Mutations>(key: K, payload: Parameters<Mutations[K]>[1]): ReturnType<Mutations[K]>;
  getters: {
    [K in keyof Getters]: ReturnType<Getters[K]>;
  };
  dispatch<K extends keyof Actions>(
    key: K,
    payload?: Parameters<Actions[K]>[1],
    options?: DispatchOptions
  ): ReturnType<Actions[K]>;
} & Omit<ActionContext<State, RootState>, 'commit' | 'getters' | 'dispatch'>;
//#endregion Store Type

//#region Store Module
export type ModuleStore<S = State> = Omit<VuexStore<S>, 'getters' | 'commit' | 'dispatch'> & {
  commit<K extends keyof Mutations, P extends Parameters<Mutations[K]>[1]>(
    key: K,
    payload: P,
    options?: CommitOptions
  ): ReturnType<Mutations[K]>;
} & {
  dispatch<K extends keyof Actions>(
    key: K,
    payload?: Parameters<Actions[K]>[1],
    options?: DispatchOptions
  ): ReturnType<Actions[K]>;
} & {
  getters: {
    [K in keyof Getters]: ReturnType<Getters[K]>;
  };
};

export const store: Module<State, RootState> = {
  state,
  mutations,
  getters,
  actions,
  //namespaced also breaks everything
  // But without it, a bigger store might have clashes in namings
  // namespaced: true,
};
//#endregion Store Type & Module

现在正如你所见，这让我重复了很多很多东西，但是在 Vuex 5 之前我不知道是否还有其他更好的解决方案。 另外我对 TypeScript 很陌生，我只是使用这个样板作为模板来让我的商店打字。

我的主要问题是：

1. 如何访问其他模块的 getter 或特定模块中的操作或突变，如果我可以让 RootGetters 和 RootActions 工作，我什至会很高兴，但我尝试过，但无法使其工作，但正如我提到的我是新手，所以也许我不知道更好。或者我导入这个导出的 const 存储：Module ... 就那么容易，这会使我的代码变得笨拙，因为当我想使用来自 4 个不同模块的 getter 时，我需要导入所有 4 个？李>
2. 我怎样才能使这些模块命名空间，我有一些相当大的商店，谈论大约 500 行和很多东西，所以名字不冲突会很好吗？也许这样可以更容易地在其他模块中使用它们？

即使你不能提供完整的答案，我也很乐意尝试你们提出的每一个建议，因为我很迷茫。

**更新：** 您可以看到关于如何使用 allAction|MutationTypes 的公认答案，只需导入它而不是子模块特定的 Action|MutationTypes 并在调用调度或提交时使用它。

至于名称间距，这仍然是一个开放式主题，请随时分享。

由于答案不包括吸气剂，经过反复试验，我最终这样做了：

//./store/index.ts
import {
  Getters as AxiosGetters,
} from '@/store/modules/axios/axios';
import {
  Getters as SiteSettingsGetters,
} from '@/store/modules/site_settings/site_settings';
import {
  Getters as UserGetters
} from '@/store/modules/user/user';

export interface RootGetters extends AxiosGetters, SiteSettingsGetters, UserGetters {}


//./some-store/module.ts
import {RootGetters} from '@/store';

type AugmentedActionContext = {
  commit<K extends keyof Mutations>(key: K, payload: Parameters<Mutations[K]>[1]): ReturnType<Mutations[K]>;
  getters: {
    [K in keyof Getters]: ReturnType<Getters[K]>;
  };
  rootGetters: {
    [K in keyof RootGetters]: ReturnType<RootGetters[K]>;
  };
  dispatch<K extends keyof Actions>(
    key: K,
    payload?: Parameters<Actions[K]>[1],
    options?: DispatchOptions
  ): ReturnType<Actions[K]>;
} & Omit<ActionContext<State, RootState>, 'commit' | 'getters' | 'dispatch' | 'rootGetters'>;

export interface Actions {
  [ActionTypes.doSomething](context: AugmentedActionContext): Promise<void>;
}

export const actions: ActionTree<State, RootState> & Actions = {
  [ActionTypes.doSomething]({ commit, rootGetters, dispatch }) {
      // You can now use getters From other stores, and also the mutation and action useing All(name)Types and having them typed
  },

Answer 1

要访问其他模块，您可以定义每个模块的动作/变异类型并像这样导入所有模块。

示例动作类型

// store/action-types.ts
import { ActionTypes as rootActionTypes } from "./modules/root/action-types";
import { ActionTypes as authUserActionTypes } from "./modules/authUser/action-types";
import { ActionTypes as counterActionTypes } from "./modules/counter/action-types";


export const AllActionTypes = {
  ...authUserActionTypes,
  ...rootActionTypes,
  ...counterActionTypes,
};

在组件中你可以像这样使用。

import { useStore } from "../../composables/useStore";
import { AllActionTypes } from "../../store/action-types";


// setup()

    const store = useStore();

    onMounted(async () => {
      await store.dispatch(AllActionTypes.GET_USERS).catch((e) => {
        console.log(e);
      });
      await store.dispatch(AllActionTypes.GET_COUNT).catch((e) => {
        console.log(e);
      });
    });

对于您的第二个问题，这就是我一直在命名空间的方式。

// store/index.ts
import { createStore } from "vuex";
import { IRootState } from "./interfaces";
import { AuthUserStoreModuleTypes } from "./modules/authUser/types";
import { CounterStoreModuleTypes } from "./modules/counter/types";
import { RootStoreModuleTypes } from "./modules/root/types";

// all the modules are registered in the root
import root from "./modules/root";

export const store = createStore<IRootState>(root);

// namespacing
type StoreModules = {
  counter: CounterStoreModuleTypes;
  root: RootStoreModuleTypes;
  authUser: AuthUserStoreModuleTypes;
};

export type Store = CounterStoreModuleTypes<Pick<StoreModules, "counter">> &
  RootStoreModuleTypes<Pick<StoreModules, "root">> &
  AuthUserStoreModuleTypes<Pick<StoreModules, "authUser">>;