🔗 Linked issue

#14607

📚 Description

This adds support for splitting dev + production build directories. Because type-support is based on having a .nuxt/tsconfig.json in place, we can't always split out the build directory.

I've opted to use buildId for the production build directory to allow parallel production builds - but this implementation detail will likely change when we implement #23392 (next on the list!)

This should enable running parallel builds alongside a dev server (or even multiple builds in parallel at the same time).

Next steps

• consider whether nuxi should run prepare step on a separate directory before building (?)
• Create project manifest in buildDir #14605
• Optimize build time speed with a cache (or other settings) #23392