ApplicationBuilderExtensions

public static class ApplicationBuilderExtensions
{
 public static IApplicationBuilder UseNodeModules(this IApplicationBuilder app, string root)
 {
 var path = Path.Combine(root, "node_modules");
 var provider = new PhysicalFileProvider(path);

 var options = new StaticFileOptions
 {
 RequestPath = "/node_modules",
 FileProvider = provider
 };

 app.UseStaticFiles(options);

 return app;
 }
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
 if (env.IsDevelopment())
 {
 app.UseDeveloperExceptionPage();
 }
 app.UseNodeModules(env.ContentRootPath);


}