Wanderer is an opinionated static site generator written in Node.JS.
Is it ready for production use? It's ready in the sense that I personally use it. But it's very much a tool that's made by me, for me, and thus might not be suited to your needs.
wanderer requires Node.JS v12 and up, because it uses
Array.flats() which doesn't exist on v10 or earlier. It's not currently available on npm because I never made a package for it, so requires you to install from git:
npm install git+ssh://firstname.lastname@example.org/dmliao/wanderer.git