The irony. They had HTA apps (running on IE engine which still work more or less, I replaced most default Win10 apps like the image viewer and the "groove" music player with a version of them built with HTA since they were slow as hell to start up) for 20 years already, they did barely anything with it, they didn't really invest seriously in a good browser engine (Edge isn't) and now all they can do is use Google's? typical Microsoft... reminds me the whole ES4/Jscript.net debacle only to then reinvent the wheel (ineffectively) with Typescript... those who don't know the story should read about it, how many years wasted? 10, 15 years?...
What MS is really doing is replacing HTA,WinStore apps, whatever with Chromium, because their own tech can't compete with Chromium as they didn't seriously invest in it. I'm actually starting to believe the people who are claiming that MS is rebuilding Office in JS from scratch...