(However, for some reason, I like the code completion in python mode in IDEA more than in vscode. It doesn't feel right, like the IDEA one does.)
See 'Using the "exclude" property' on https://code.visualstudio.com/docs/languages/jsconfig
> The exclude attribute tells the language service what files are and are not part of your
> source code. This keeps performance at a high level. If IntelliSense is slow, add folders
> to your exclude list (VS Code will prompt you to do this if it detects the slow down).