Self-Signed Certificate Error when installing jQuery Types for Typescript

If you are trying to use this command in Visual Studio 2022;

npm install --save-dev @types/jquery

and hit by self-signed certificate error in certificate chain. Try to use this command in a Terminal window on the root of Presentation project;

npm set strict-ssl false
npm install --save-dev @types/jquery
npm install --save-dev @types/jqueryui

This will create Package-lock.json file with the following content;

  "requires": true,
  "lockfileVersion": 1,
  "dependencies": {
    "@types/jquery": {
      "version": "3.5.20",
      "resolved": "",
      "requires": {
        "@types/sizzle": "*"
    "@types/jqueryui": {
      "version": "1.12.18",
      "resolved": "",
      "dev": true,
      "requires": {
        "@types/jquery": "*"
    "@types/sizzle": {
      "version": "2.3.4",
      "resolved": ""

Start typing $ and you will immediately start seeing jQuery methods. Now, You can use Typescript with jQuery and jQuery UI.

Use LibMan with ASP.NET Core in Visual Studio

To install/uninstall client side libraries (Bootstrap, jQuery, Popper, Knockout etc), Visual studio has a built-in support known as LibMan in ASP.NET Core projects, including:

  • Support for configuring and running LibMan restore operations on build.
  • Menu items for triggering LibMan restore and clean operations.
  • Search dialog for finding libraries and adding the files to a project.
  • Editing support for libman.json—the LibMan manifest file.

This file can be added in existing project by going through Project->Manage Client Side Libraries. A file Libman.json will be added to the root folder automatically.

LibMan file can be manually edited. This file is located in project root folder, Libman.json.

Cleaning & Restoring Client-Side Libraries can be done quite easily by right clicking on the libman.json file, and it will show up these 2 options. Simply select the needed option to perform the task.

Here is the screenshot:

Update or Uninstall Client Side Libraries

The steps to update or uninstall a Client-Side Library are similar. You need to follow the below steps.

  • 1. Open the libman.json file and then click on the client-side library which you want to uninstall or update.
  • 2. You will see a light yellow bulb icon appearing on the left side. Click on this icon to get the options for – whether to update or uninstall that specific client-side library. Here is the screenshot.

You can also uninstall and update the a client-side library by ‘removing or changing it’s version nunber’ given on it’s entry in the libman.json file, and then saving the file.

For popovers to work, either install Popover.js client library. If you prefer, try bootstrap bundle and you will get popover in it;

<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.js"></script>


Use LibMan in Visual Studio

How to install Bootstrap and other libraries

Bootstrap 4 Get started

Bootstrap 4 has solved .NET CORE 6 popover problem. It does support jQuery version @3.56.1 and jQuery UI version @1.13.2. Bootstrap 5 doesn’t support jQuery. It supports vanilla JavaScript.

Visual Studio Task List Feature

Visual Studio has a handy feature, Task List. Click on View->Task List.

Task list has tokens that are used to track code comments. This also acts as a shortcut to navigate to relevant code section. This list comes with 3 default tokens; TODO, HACK and !UnresolvedMergeConflict.

We can add custom tokens, if we want. Here is how;

Open Tools -> options -> Environment, you will see Task List.

Add a new custom token;

To make this feature working, All you need to do is to add comments in your code;

        HACK: I don't need serviceProviderId parameter here. The only reason I am adding this becuase this comes
        from a link in razor page list and I need to keep serviceProviderId and projectId in session. 
        Session starts here for now.
    public async Task<IActionResult> ProjectTaskList(Guid projectId)
        var result = await _httpFactoryService.GetProjectActionAsync(projectId);
        return View(result);


Using the Task List

Working with packages and libraries in .NET Core

If you want to develop a modern web application, you will realize very quickly that you can’t write everything on your own. You will rely on some third party client and server side libraries and components to increase your development speed. There are many online code repositories and sources available to developers these days and downloading and keeping track of all third-party packages can be a painful task

Read more here.