Serving static SPA resources in ASP.NET MVC 4 - asp.net

Question

I'm writing an ASP.NET MVC 4 app (I can't use any framework versions newer than 4.0 for this project) with React SPA client.
I have a problem serving static resources like js files and stylesheets. In he heat of a fight I came with something like this:
routes.MapRoute(
name: "Static1",
url: "{filename}.{extension}",
defaults: new { controller = "Home", action = "Static1" }
);
routes.MapRoute(
name: "Static2",
url: "{url}/{filename}.{extension}",
defaults: new { controller = "Home", action = "Static2" }
);
routes.MapRoute(
name: "Static3",
url: "{url1}/{url2}/{filename}.{extension}",
defaults: new { controller = "Home", action = "Static3" }
);
routes.MapRoute(
name: "Empty",
url: "",
defaults: new { controller = "Home", action = "Index" }
);
routes.MapRoute(
name: "Default",
url: "{*path}",
defaults: new { controller = "Home", action = "Index" }
);
and
public ActionResult Index()
{
return new FilePathResult("~/client/index.html", "text/html");
}
public ActionResult Static1(string filename, string extension)
{
return Redirect(Url.Content($"~/client/{filename}.{extension}"));
}
public ActionResult Static2(string url, string filename, string extension)
{
return Redirect(Url.Content($"~/client/{url}/{filename}.{extension}"));
}
public ActionResult Static3(string url1, string url2, string filename, string extension)
{
return Redirect(Url.Content($"~/client/{url1}/{url2}/{filename}.{extension}"));
}
The problem is that webpack often generates files with multiple dots in their name (ex. main.4395d64a.js) and thus even this already not pretty solution fails. I would rather not create multiple routes for different dot numbers.
Is there a better way?