But I am surprised that Microsoft argues that they optimize VSCode as much as possible but still include dependencies like jQuery. Of course, there's nothing wrong with using jQuery, and I think it doesn't even affect performance that much since it mostly just adds flavour to vanilla JS.
At first, I thought that might be some kind of macro (don't know if you can use macros in JS, but you get my point), so I decided to use the same search tool that brought me to that file in the first place and look for references to jQuery, and indeed, that's what I found. Visual Studio Code is free and available on your favorite platform - Linux, macOS, and Windows. I had a hard time trying to find the elements that I wanted to modify so I used the search tool from the dev tools "sources" panel to checkout some JavaScript files and find where those elements I was looking for were created, and suddenly I started noticing a dollar symbol that looked very familiar, and I was being used in the lines where the elements were being added to the DOM. Visual Studio Code is a code editor redefined and optimized for building and debugging modern web and cloud applications. I was tinkering around and trying to modify VSCode's UI with the Developer Tools it provides with are just regular Chrome Developer Tools cause VSCode is just a web app.