Ability to use `routeRules` as a function

[VladStepanov]

Describe the feature

It would be more flexible, if routeRules could call cb on request. I propose the following api:

{
  ...
  routeRules (event) {
    ...
    return {
      headers: {},
      static: true,
      cors: true,
      redirect: {  }
    }
  }

Additional information

• [X] Would you be willing to help implement this feature?

[pi0]

Hi, dear @VladStepanov can you please explain more why you would event base rules?

Route rules are defined at build time and are applied to platform deployment configuration and middleware before even hitting the event handler.

In other cases, you can always apply operations such as wrapping for proxy, adding headers, etc directly from a middleware.

[VladStepanov]

Hi @pi0, thanks for reactive answer!

We have edge case, where nuxt working with subdomains and depending on which subdomain, we should have a different routing.

I will try to describe what is the case. We have site builder like taplink, but sites created by users are placed not in path (taplink.cc/[site_name]) but in subdomain like [site_name].taplink.cc.

For that pages(subdomains) we need a cache. That's why we have to check every request.hostname, take from it subdomain and with that subdomain check cache.

Route rules are defined at build time and are applied to platform deployment configuration and middleware before even hitting the event handler.

Maybe i don't understand something, but there is a possibility to pass event to routeRules https://github.com/unjs/nitro/blob/4a4f539a04eb2b85c81361a62ef8f7ee29773771/src/runtime/route-rules.ts#L18-L22 Correct me if i'm wrong

Maybe there is other way to implement it. Currently i'm researching.

[Chippd]

@VladStepanov did you work out how to do subdomains? I'm currently trying to work out how to:

• If subdomain exists - render page in pages/[subdomain]/*
• If subdomain doesn't exist - render page in pages/*

I have it working when I have server side rendering on, but not when I prerender the routes.