Tip: Route everything but _dist_ to backend

[winkler1]

I want to pass everything but Snowpack's dirs to my backend, and was having to build up a whitelist of all the routes...

routes: {
        src: "/",
        dest: (req, res) => proxy.web(req, res)
      },
      {
        src: "/api/.*",
        dest: (req, res) => proxy.web(req, res)
      },
      {
        src: "/app/.*",
        dest: (req, res) => proxy.web(req, res)
      },
      {
        src: "/assets/.*",
        dest: (req, res) => proxy.web(req, res)
      },
    // a half-dozen more..
}

This was getting insane, so a better option is to match on anything besides special Snowpack dirs:

  experiments: {
    routes: [
      {
        src: "\/(?!_dist_|web_modules|__snowpack__).*",
        dest: (req, res) => proxy.web(req, res)
      }
    ]
  },
  mount: {
    react: "/_dist_/"
  },

Easy peasy lemon squeezy, and easy to maintain!

[FredKSchott]

Thanks! This is a great tip. If you're interested in adding this to our main docs, I'd love for us to have a couple of sentences on this page about Regex and negative look-aheads