How great is that? Now we can use VS Code in the Browser by navigating to vscode.dev. It's possible to create and edit documents in GitHub repositories as well as working with local files.
You can create a new file in the web just as you would in a desktop VS Code environment, using File > New File from the Command Palette (F1).
See the announcement. There are limitations. You wouldn't have a Terminal window, for example, but editing something on your blog just inside your GitHub repository works much better now.