dynamicallyStore.vue

<template>
  <span>
    <!-- credits from https://github.com/vuejs/vuex/issues/863#issuecomment-329510765 -->
  </span>
</template>

<script>
import { mapState, mapActions, mapMutations } from 'vuex';

export default {
  props: ['namespace'],

  computed: mapState({
    state(state) {
      return state[this.namespace];
    },

    someGetter(state, getters) {
      return getters[`${this.namespace}/someGetter`];
    },
  }),

  methods: {
    ...mapActions({
      someAction(dispatch, payload) {
        return dispatch(`${this.namespace}/someAction`, payload);
      },
    }),

    ...mapMutations({
      someMutation(commit, payload) {
        return commit(`${this.namespace}/someMutation`, payload);
      },
    }),
  },
};
</script>