Runtime config via app.config.ts

[aklinker1]

Feature Request

I'm working on an analytics module, and I need a way to pass config to the app at runtime, not build-time. Currently, modules only accept build config.

Nuxt does this via a <srcDir>/app.config.ts file and I want to do the same, I think it's a good pattern. However, I'm not going to support everything nuxt does. For now, I want to add:

• Detect the file, or default to {}
• Allow for module augmentation to add to the config type
• From wxt/client, provide useAppConfig helper function to access the config defined in app.config.ts.

It will not support the following from nuxt:

• Automatic type augmentation
• Include variables from the .env file

Is your feature request related to a bug?

#790

What are the alternatives?

A clear and concise description of any alternative solutions or features you've considered.

Additional context

https://nuxt.com/docs/guide/directory-structure/app-config