Firebase & Vuex

gistfile1.txt

firebase-config.js

export const config = {
    apiKey: "xxxxxxx",
    authDomain: "xxxxxxx",
    databaseURL: "xxxxxxx",
    storageBucket: "xxxxxxxx",
    messagingSenderId: "xxxxxxx"
  }; 
Now in your main.js do as follows

import Vue from 'vue'
import App from './App.vue'
import * as firebase from 'firebase'
import { store } from './store/store'
import { config } from './firebase-config'

firebase.initializeApp(config);
Vue.prototype.$firebase = firebase;

new Vue({
  el: '#app',
  store,
  render: h => h(App)
}) 
adding firebase to the Vue.prototype allows usage of firebase in your vue components by using this.$firebase

if you don't want this behavior you can just initialize firebase using firebase.initializeApp(config);

now coming to your vuex store you can just import the firebase module as below

import Vue from 'vue'
import Vuex from 'vuex'
import * as firebase from 'firebase'

Vue.use(Vuex);

export const store = new Vuex.Store({
    state:{},
    mutations:{},
    actions:{
        myFirebaseAction: ({commit}) => {
            //you can use firebase like this
            var ref = firebase.database().ref()
        }
    }
});