how can get vite command line base option?

[t829702]

I have a vue3 project with vite and vue-router, need to deploy to multiple servers with different base path, so, when calling the router's createWebHistory, I don't want to use a hard coded paths, but current setup build pipeline is calling vite with different command line --base

$ vite build --base '/server1-base/path/to/a/b/c' --outDir ./server1-distdir
$ vite build --base '/server2-base/path/to/b/c/d' --outDir ./server2-distdir
$ ...

so, is there anyway to get vite command line's base option, and pass to createWebHistory? and is there anyway to optimize this workflow? to merge into a single same copy of distdir to copy to different servers' different base path and be self aware the base path where it is served?

https://next.router.vuejs.org/guide/migration/index.html#moved-the-base-option

createRouter({
  history: createWebHistory('/base-directory/'),
  routes: ...
}

Thanks,

[yyx990803]

import.meta.env.BASE_URL

https://vitejs.dev/guide/build.html#public-base-path