well according to @benfrancis 's blog: “We also have an
experimental OpenWrt package” as said on https://hacks.mozilla.org/2018/02/how-to-build-your-own-private-smart-home-with-a-raspberry-pi-and-mozillas-things-gateway/
I guess the package can be rebuild using:
GitHub
openwrt/packages
Community maintained packages for OpenWrt. Documentation for
submitting pull requests is in CONTRIBUTING.md -
openwrt/packages
I could try on some of my routers, but I know that some will be
too constrained to support node, but could eventually support
alternative engines (such as IoT.js).