Issue when importing @aptabase/web on server

[ngregrichardson]

Loving Aptabase so far, but running into an annoyance with using this SDK with SSR frameworks (specifically SvelteKit). I want to exclusively run events clientside, so I make sure to run init and trackEvent only on the client. However, functions like getBrowserLocale are called on import to create defaultLocale (https://github.com/aptabase/aptabase-js/blob/main/packages/shared.ts#L1), which causes an error since navigator.languages does not exist (TypeError: Cannot read properties of undefined (reading 'length'))

Would you accept a PR to either:

1. Make sure navigator.languages exists before checking length

or

2. defaultLocale is a "singleton" that is first created when it is requested (which seems to only be in sendEvent()

I'd be happy to do the work, just want to chat about how it should be done (if at all)

[ivnbogdan]

Thanks for using Aptabase and for reporting this!

This definitely needs a fix, and it probably makes more sense to read the locale value as late as possible - so like you mentioned in option 2, on sendEvent.
That way when sendEvent is called and is executed on client side navigator.languages should be available.

Adding an extra check with navigator.languages?.length also helps, but it doesn't result in the correct language being loaded, so would go with reading it on sendEvent primarily