That built-in experience comes via vscode-js-debug, a GitHub project described as a Debugger Adapter Protocol -based JavaScript debugger that works with Node.js, Chrome, Edge, WebView2 and VS Code ...

Microsoft is working on a new debugger for Node.js and Chrome, which is installed by default for insiders and can also be installed from the Visual Studio marketplace.

Visual Studio Code pour le Web est déjà accessible à tous les utilisateurs et, étant encore en preview, il faut s'attendre à de nombreuses améliorations dans les mois prochains.