Today js-debug can debug webview2's embedded in C++, but @DavidShoe requested we also add support for webviews in UWPs.

This is a little more involved, and he created a sample repo that demonstrates this. Primarily, acquiring the pipe involves some low level win32 calls. Therefore I've wrapped this in a native Node module in https://github.com/microsoft/vscode-win32-app-container-tokens, and will integrate it from there into js-debug.