Cannot accessed the state.auth.loggedIn in vuex with typescript

[fahmiegerton]

Everything was okay before, but I don't know why this suddenly occurred. auth state doesn't exist so my getters throwing an error cannot read property of 'loggedIn' of undefined. Is there any changes or something's wrong with my store?

and here's my index.ts in store folder.

import { GetterTree, ActionTree, MutationTree } from "vuex";
import { getAccessorType } from 'typed-vuex'

// Import all your submodules
import * as mainbar from '~/store/mainbar'

export const state = ():any => ({})

export type RootState = ReturnType<typeof state>

export const getters: GetterTree<RootState, RootState> = {
	isAuthenticated: state => state.auth.loggedIn, // loggedIn is undefined
	loggedInUser: state => state.auth.user, // user is undefined
 }

 export const mutations: MutationTree<RootState> = {}

 export const actions: ActionTree<RootState, RootState> = {}

 // This compiles to nothing and only serves to return the correct type of the accessor
export const accessorType = getAccessorType({
	state,
	getters,
	mutations,
	actions,
	modules: {
	  // The key (submodule) needs to match the Nuxt namespace (e.g. ~/store/submodule.ts)
	  mainbar,
	},
 })

Thank you!