It's no mystery. https://en.wikipedia.org/wiki/Anders_Hejlsberg
Which recently decided that Go was a better option than C# for the Typescript rewrite, exactly because not all decisions were done correctly to make C# a better fit for the problem.
alt Hacker News
Which recently decided that Go was a better option than C# for the Typescript rewrite, exactly because not all decisions were done correctly to make C# a better fit for the problem.