If you have more than 5000 Lines in your File VSCode refuses to format the file.
For example: I had a Json File with over 77.000 Lines (Size: 800KB) and because it was auto-written by a programm everything was in one Line. The build-in json-formatter from VSCode refused to format the file and tokenize it.
After searching the Web for quite some time I found a quite simple solution by myslef that I now want to share in the hope I can help some that struggle with the same thing!