Debugging TypeScript files outside wwwroot

Question

How should I debug TypeScript files in ASP.NET 5? Suppose solution layout as on the following picture. Notice .ts Scripts are outside wwwroot folder and compiled .js file is

Answer 1

An update with ASP.Net Core release for a good stef's answer (that won't compile now):

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseFileServer(new FileServerOptions()
        {
            FileProvider = new PhysicalFileProvider(Path.Combine(env.ContentRootPath, "Scripts")),
            RequestPath = new PathString("/app"),
        });
    }
}