vuex 类型推断工具

使用方法, 在下列示例中 commit，dispatch, getter 将会受到严格的类型校验
如需要使用modules的类型推断，请参考example目录下的代码

import type {
    TypedDispatch,
    TypedCommit,
    GetGetterContext,
    GetActionContext,
    GetState,
    CreateStoreItem,
    GetGlobalGetterFn
} from 'vuex-typed-helper';

interface State {
    local: boolean
}

interface Actions {
    test(ctx: GetActionContext<StoreItem>, payload: number): Promise<number>;
    otherTest(ctx: GetActionContext<StoreItem>, payload: number): number;
}

interface Mutations {
    say(state: GetState<StoreItem>, payload: number): void;
    otherSay(state: GetState<StoreItem>, payload: number): void;
}

interface Getters {
    someValue(...args: GetGetterContext<StoreItem>): number;
    otherValue(...args: GetGetterContext<StoreItem>): () => number;
}

export type StoreItem = CreateStoreItem<State, Mutations, Actions, Getters>;

const state: State = {
    local: false,
}

const actions: Actions = {
    test ({ dispatch, commit, getters }, payload) {
        commit('say', 12)
        return Promise.resolve(getters.someValue);
    },
    otherTest() {
        return 1;
    }

};

const mutations: Mutations = {
    say(state, payload) {
        state.local;
        console.log(payload);
    },
    otherSay(state, payload) {
        state.local;
        console.log(payload);
    },
};

const getters: Getters = {
    someValue(state, getters, rootState) {
        return 1;
    },
    otherValue(state, getters, rootState) {
        return () => {
            return getters.someValue + 4;
        };
    },
};

const store = createStore({
    state: state as GetState<StoreItem>,
    mutations: mutations as any,
    getters: getters as any,
    actions: actions as any,
});

export const useStore = () => {
    return store;
}

export const commit: TypedCommit<StoreItem> = (type, payload?, options?) => {
    return store.commit(type, payload, options) as any;
}

export const dispatch: TypedDispatch<StoreItem> = (type, payload?, options?) => {
    return store.dispatch(type, payload, options) as any;
}

export const getter: GetGlobalGetterFn<StoreItem> = (key) => {
    return store.getters[key];
}

getter('someValue'); // number

dispatch('test', 12); // Promise<number>

commit('say', 21); // void