What is the proper way to set up state with localStorage in Nuxt.js when using Universal Rendering?

Unique Situation

In my unique setup, I have a specific flow that involves storing a token in localStorage, even though I know it's not the recommended practice. Every time my Nuxt App is launched, I need to retrieve the token from localStorage, validate it via an API call, and set up the initial state accordingly.

Dilemma

The challenge arises because I am utilizing Server Side Rendering with Nuxt, which means that localStorage is inaccessible during server-side initialization.

Creative Solution

To address this issue, I have devised a workaround by creating an Action that performs the tasks outlined in the Unique Situation, and then triggering this action from the mounted() method of layouts/default.vue.

I welcome any suggestions for improving this workflow or feedback on whether this approach is appropriate.

javascriptvue.jswebnuxt.js

Answer №1

To check if your code is running on the server side, you can use the condition typeof window === 'undefined'. This way, you can skip running certain code that should only be executed on the client side, like so:

if (typeof window !== 'undefined') {
   // your client-side code here
}

This approach can be used within the created, beforeCreate, or asyncData methods. If your code is in the mounted() method, there may not be a need to do this check since this lifecycle hook specifically runs on the client side.

Answer №2

If you need to validate a token in your application, consider creating a Middleware function to handle this task and then dispatch the action accordingly. You can then include this Middleware in your layout for easy access. Learn more about creating Middleware here

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