Add Webpack dev middleware and React hot module replacement to ReactSpa template

templates/ReactSpa/Startup.cs

@@ -4,6 +4,7 @@ using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Hosting;
+using Microsoft.AspNet.SpaServices.Webpack;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
@@ -46,6 +47,15 @@ namespace WebApplicationBasic
             }
 
             app.UseIISPlatformHandler();
+            
+            if (env.IsDevelopment())
+            {
+                app.UseWebpackDevMiddleware(new WebpackDevMiddlewareOptions
+                {
+                    HotModuleReplacement = true,
+                    ReactHotModuleReplacement = true
+                });
+            }
 
             app.UseStaticFiles();