Build error “Cannot find name 'Record'” with bootstrap 4

Question

Today, I decided to migrate my ASP .NET MVC 5 project from bootstrap 3 to bootstrap 4 (the sass version).

After the migration, I got an error after the compilation of my

Answer 1

• open your project in visual studio 2017 and it will ask you to upgrade the typescript just press upgrade

  OR

Upgrade your Typescript version