Alltogether? Maybe. But for a single library or webapp it will be hardly that much. I doubt that Facebook JS frontend code is much more than VS Code. I persona

Alltogether? Maybe. But for a single library or webapp it will be hardly that much. I doubt that Facebook JS frontend code is much more than VS Code. I personally have only worked on up to medium sized projects (maybe 40000 LoC) in Typescript. I found compile times not to be a problem there, and I even though they were really on the good side of the spectrum. Didn't noticed any difference compared to similar sized C# or Java projects. All of those 3 have pretty neglible compile times compared against FB and Googles other main programming language: C++.