Worker env access
I'm building a web worker to post activity tracking to our API, although it doesn't seem like the worker is getting access to any of my environment variables. Some context:
- Worker is stored in
/assets/js/activity.worker.js
- Worker is exposed via plugin which imports worker using suffix import ActivityWorker from '@/assets/js/activity.worker?worker
- import.meta.env has the following value in worker:
Adding a VITE_CORE_API env variable to my .env file adds the value correctly to import.meta.env in the worker, although I would prefer not duplicating my existing CORE_API env var just for this.
Is there any other way to get the env variable into my worker?3 Replies
Hi @thorne51. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
----------------------
Based on the information provided in the knowledge sources, I can offer some insights into your question about accessing environment variables in a web worker within a Nuxt 3 application. However, it's important to note that the knowledge sources don't directly address the specific scenario of accessing environment variables in web workers.
In Nuxt 3, the recommended way to access runtime configuration and environment variables is through the
useRuntimeConfig() composable as described in the Nuxt documentation (https://nuxt.com/docs/api/composables/use-runtime-config). However, this composable is designed to be used within Vue components and on the server-side, not in web workers.
For your specific case with a web worker, there are a few points to consider:
1. The behavior you're seeing with import.meta.env in the worker is expected. By default, Vite (which Nuxt 3 uses) only exposes environment variables prefixed with VITE_ to the client-side code, including web workers as mentioned in the Nuxt documentation (https://nuxt.com/docs/api/advanced/import-meta#builder-properties).
2. The CORE_API environment variable you're trying to access is likely part of the Nuxt runtime config, which is not directly accessible in a web worker.
3. Your observation that adding a VITE_CORE_API variable makes it available in the worker is correct, as this follows Vite's convention for exposing environment variables to client-side code.
Given these constraints, here are a few potential approaches you could consider:
1. Use the VITE_ prefix for the variables you need in the worker, as you've already discovered. This is the most straightforward solution, although it does require duplicating the variable.
2. Pass the necessary configuration to the worker when you instantiate it in your Nuxt plugin. You could access the runtime config in the plugin using useRuntimeConfig() and then pass it to the worker during initialization.
3. If possible, consider moving the API call logic to the main thread and use the worker for other computations. This way, you can use useRuntimeConfig() in your Vue components or Nuxt plugins to access the environment variables.
Unfortunately, there isn't a direct way to access Nuxt's runtime config from within a web worker based on the information provided in the knowledge sources. The Nuxt documentation doesn't specifically address this use case.
If you need a more definitive solution, you might want to consider asking this question on the Nuxt GitHub issues page (https://github.com/nuxt/nuxt/issues) or the Nuxt Discord community, as they might have more specific insights or workarounds for this particular scenario.
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------<@229918754069282818> Kapa.ai is still learning and improving, please let me know how I did by reacting below.
you should implement using https://github.com/danielroe/nuxt-workers
GitHub
GitHub - danielroe/nuxt-workers: SSR-safe, zero-config Web Workers ...
SSR-safe, zero-config Web Workers integration for Nuxt. - danielroe/nuxt-workers