Startup.cs

namespace ServerSideReactComponents
{
    using JavaScriptEngineSwitcher.ChakraCore;
    using JavaScriptEngineSwitcher.Extensions.MsDependencyInjection;

    using Microsoft.AspNetCore.Builder;
    using Microsoft.AspNetCore.Hosting;
    using Microsoft.AspNetCore.Http;
    using Microsoft.Extensions.Configuration;
    using Microsoft.Extensions.DependencyInjection;
    using Microsoft.Extensions.Hosting;

    using React;
    using React.AspNet;

    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            this.Configuration = configuration;
        }

        public IConfiguration Configuration { get; }


        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc(o => o.EnableEndpointRouting = false);

            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            services.AddReact();

            // Make sure a JS engine is registered, or you will get an error!
            services.AddJsEngineSwitcher(options => options.DefaultEngineName = ChakraCoreJsEngine.EngineName)
                .AddChakraCore();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                app.UseHsts();
            }

            app.UseHttpsRedirection();

            // Initialise ReactJS.NET. Must be before static files.
            app.UseReact(
                config =>
                    {
                        config.SetReuseJavaScriptEngines(false).SetLoadBabel(false).SetLoadReact(true)
                            .SetReactAppBuildPath("~/dist");
                    });

            app.UseStaticFiles();

            app.UseRouting();

            app.UseAuthorization();

            app.UseMvc(routes => { routes.MapRoute(name: "default", template: "{controller=Home}/{action=Index}"); });
        }
    }
}