Did you read through https://vitejs.dev/guide/env-and-mode.html#env-files ?
#How do I read firebase api keys via a .env.local file?
high perch
That's completely handled by vite, not tauri so you may have better luck asking the vite guys 🤔
left shuttle
What returns that object?
import.meta.env.VITE_FIREBASE_API_KEY?
Can you send your Vite config?
Just to make sure - you have restarted the dev server after updating the .env.local file?
And it is placed at the root directory
I'm pretty certain you should
Then restart the dev server