I think this is completely valid. From the title ("standards-first") I'd assume it would stuck to minimal third-party addons and use standards-compliant JavaScript as much as possible. Why not JavaScript for configuration, for example?

As a side note, and not to excuse lack of Windows support, but: I've switched to WSL (Linux) for development on Windows. Coupled with Visual Studio Code, the results are much faster than when I used the Windows terminal directly.