Braze/Appboy can be used with Vue but there's no Nuxt version and "braze nuxt" or "appboy nuxt" yields zero result on Google.
This answer proposes a way to install a regular npm package on Nuxt, however would that solution also work for Braze?
I cannot check for myself because I don't have a Braze account at the moment (there's no free version or anything like that) hence my question.
His solution is indeed working, you only need to use mode rather than ssr as I've commented. For more information, you can follow this documentation: https://nuxtjs.org/docs/2.x/directory-structure/plugins/
But yeah, Nuxt can basically use any package that is working with VueJS !