Those who do choose Microsoft Edge will see a new Inspect button that launches the Edge Developers Tools directly inside of Visual Studio Code. The first time you do make this choice, you will have to install an extension, but then it will just work instantly after that. The Inspect tool lets you inspect the web page’s Document Object Model (DOM), make changes to its Cascading Style Sheets (CSS), see network requests, and more, without leaving the editor. You can also use the Debug Console in the editor to interact with the document in the browser, just as you do with the Console in the Edge Developer Tools.
You can learn more about this functionality in the debugger extension’s README file on GitHub.