vuex unknown mutation type in registered module

Question

i just wanna create dynamic registered module in vuex, but it seems doesnt work. this is my store file

import Vuex from 'vuex'
import descriptionModule from './module/descriptionModule';
const {state: stateModule, getters, mutations} = descriptionModule;

const createStore = () => {
  return new Vuex.Store({
    state: {
      descriptions: [],
    },
    mutations: {
      addDescriptions(state, payload){
        state.descriptions.push(state.descriptions.length + 1);
        createStore().registerModule(`descriptionModule${payload}`, {
          state: stateModule,
          getters,
          mutations,
          namespaced: true // making our module reusable
        });
      }
    }
  })
};

export default createStore

and this is my custom module that i will registered

const state = () => {
  return {description: ''}
};
const getters = {
  description: (state) => state.description
};
const mutations = {
  updateDescription(state, payloads){
    state.description = payloads;
  }
};
export default {
  state,getters,mutations
}

and then this is my custom methods that will call addDescriptions mutation and commit updateDescription from registeredModule

beforeMount(){
  console.log("hahahaha");
  this.$store.commit('addDescriptions', this.id);
},
... more code ....
methods: {
      onType(editor, content){
        console.log(this.$store.state.a);
        console.log(this.$store.state);
        console.log(this.$store);
        this.$store.commit(`descriptionModule${this.id}/updateDescription`, content, {root: true})
      }
    }

every onType called, i get an error unknown mutation type: descriptionModuleeditor1/updateDescription in browser.

currently iam following this solution link , but it doesnt work for me :(

can anyone solve this,,, sorry for bad english

Solution

invoke $store.registerModule() via component/pages on beforeMount():

beforeMount(){
      this.$store.registerModule(`descriptionModule${this.id}`, {
        state: stateModule,
        getters,
        mutations,
        namespaced: true // making our module reusable
      });
    },