"初始化firebase连接后如何将类星体应用程序挂载到dom？"

Question

Hi how do I initialize my quasar app once after I have established a connection to firebase. I need to do this because my route guards checks whether a user is logged in, but if a user refreshes this causes firebase to check whether a current user exists but since it's a async operation it initially returns null. I have previously achieved this using vue where I have done this in my main.js file, but I'm unsure how to do this is quasar boot file.

import { createApp } from 'vue'
import App from './App.vue'
import router from './router'
import './assets/main.css'

import { authService } from './firebase/config'

let app

authService.onAuthStateChanged(() => {
  if(!app){
    app = createApp(App).use(router).mount('#app')
  }
})

Here inside main.js standard vue app, we wait for Firebase Auth to initialize and only after .onAuthStateChanged() method fires, we create our Vue App.

In an quasar app there is no main.js but instead boot files which run some code before main app starts.

Below is what a standard boot files looks like but I am unsure how to convert my main.js to a executable boot file, seems like some properties are missing like mount, createApp & use.

// import something here

// "async" is optional!
// remove it if you don't need it
export default async ({ /* app, router, store */ }) => {
  // something to do
}

Answer 1

This got it working.

export default async ({ app, router, store }) => {
    return new Promise(resolve => {
        const unsubscribe = authService.onAuthStateChanged(() => {
            resolve()
            unsubscribe()
        })
    })
}

Answer 2

Ideally you create a boot file<\/a> for initializing Firebase in a Quasar project.