Building a web client using the SignalR JavaScript library

Next, we will add the SignalR client-side JavaScript library so that we can use it on a web page:

1. Open a command prompt or terminal for the Northwind.SignalR.Service.Client.Mvc project/folder.
2. Install the Library Manager CLI tool, as shown in the following command:

   dotnet tool install -g Microsoft.Web.LibraryManager.Cli
   

   This tool might already be installed globally. To update it to the latest version, repeat the command but replace install with update, as shown highlighted in the following code:

   PS C:\apps-services-net7\Chapter13\Northwind.SignalR.Service.Client.Mvc> dotnet tool install -g Microsoft.Web.LibraryManager.CliTool 'microsoft.web.librarymanager.cli' is already installed.
   PS C:\apps-services-net7\Chapter13\Northwind.SignalR.Service.Client.Mvc> dotnet tool update -g Microsoft.Web.LibraryManager.Cli
   Tool 'microsoft.web.librarymanager.cli' was successfully...