I'm experiencing an issue in where modifying tsconfig.json files within my Visual Studio 2019 IDE causes Intellisense to malfuntion.
In my case, my tsconfig.json is at the base of my project which extends a file called base.json (the base config for the entire project). Its target=ES6 and its module=ESNEXT. When I modify this file, it there is immediate affect. In addition, Intellisense sometimes fails from this point forward. What I've observed is that any files, that where open before the change, remain to have Intellisense, but any other files opened have no intellisence bar or type assistance. Lastly, the Intellisense output window show no error messages and the IDE also gives no indication of an issue.
The only work around is to close VS and open the project again, which is a big pain.