Visual Studio 2019 does not recognize tsconfig.json

If anyone comes here because Visual Studio 2019 builder seems to ignore the exclude section of tsconfig.json, you can invert the filters and use an include section instead, that works

VS2019 tsconfig.json Example: https://docs.microsoft.com/en-us/visualstudio/javascript/compile-typescript-code-npm?view=vs-2019

The Build Action property (F4) for the tsconfig.json file has to be set to Content. Otherwise Visual Studio ignores this file since VS 2019.

There is a downside though: After this change VS 2017 will complain about the Build Action:

Error NETSDK1022

Duplicate 'Content' items were included. The .NET SDK includes 'Content' items from your project directory by default. You can either remove these items from your project file, or set the 'EnableDefaultContentItems' property to 'false' if you want to explicitly include them in your project file. For more information, see https://aka.ms/sdkimplicititems. The duplicate items were: 'tsconfig.json'