Register NodeRunner as singletone in Dependency Injection

README.md

@@ -11,6 +11,12 @@ Change your Startup.cs configuration file as follows:
 using AspSpaService;
     public class Startup
     {
+        public void ConfigureServices(IServiceCollection services)
+        {
+            // ---- Your code -----------//
+            services.AddNodeRunner();
+        }
+
         public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
         {
             // ---- Your code -----------//

samples/webapi/Startup.cs

@@ -18,6 +18,7 @@ public class Startup
         // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
         public void ConfigureServices(IServiceCollection services)
         {
+            services.AddNodeRunner();
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.

src/AspSpaService/AspSpaService.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <PackageId>AspSpaService</PackageId>
-    <Version>1.0.0</Version>
+    <Version>1.0.1</Version>
     <Authors>Aleksandr Kolesnikov</Authors>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <AssemblyName>AspSpaService</AssemblyName>

src/AspSpaService/AspSpaServiceMiddlewareExtentions.cs

@@ -15,6 +15,20 @@ public static class AspSpaServiceMiddlewareExtensions
     {
         private const string LogCategoryName = "AspSpaService";
         /// <summary>
+        /// Adds NodeRunner as singletone service and register it in Dependency Injection
+        /// This dispose node js process when application is shutdown
+        ///
+        /// </summary>
+        /// <param name="services">The <see cref="IServiceCollection"/>.</param>
+        public static void AddNodeRunner(this IServiceCollection services)
+        {
+            services.AddSingleton(typeof(NodeRunner));
+        }
+        private static NodeRunner GetNodeRunner(IApplicationBuilder builder)
+        {
+            return (NodeRunner)builder.ApplicationServices.GetService(typeof(NodeRunner));
+        }
+        /// <summary>
         /// Handles requests by passing them through to an instance of the node dev server.
         /// This means you don't need to start node dev server manually.
         ///
@@ -40,7 +54,11 @@ public static void UseAspSpaDevelopmentServer(
                 throw new ArgumentNullException(nameof(spaBuilder));
             }
             var logger = GetOrCreateLogger(spaBuilder.ApplicationBuilder, LogCategoryName);
-            NodeRunner runner = new NodeRunner();
+            NodeRunner runner = GetNodeRunner(spaBuilder.ApplicationBuilder);
+            if (runner == null)
+            {
+                runner = new NodeRunner();
+            }
             runner.Command = command;
             runner.Arguments = arguments;
             runner.WorkingDirectory = workingDirectory;