While I will present these tips and tricks in the context of building a Universal application targeting both Windows and Windows Phone, most of them apply to using Blend for building them using any ...

Able to run on Windows, Linux, or Mac, exceedingly extensible, with excellent support for remote development, Visual Studio Code fills many of the gaps in Microsoft’s developer story.

If you have an existing web application, open it in Visual Studio Code (preferably copying it to a new development branch) and then use the PWA Studio tools to convert it into a PWA.