> TypeScript crew have managed to build something that can get traction where other efforts have not.

You mean Microsoft managed to get traction? It seems most TS proponents don't realize TS is a success because they fell for smart marketing and serious money behind the project, not because it's a better language than 'other efforts' like for example Purescript or Dart.

But every comment I make against TS seems futile. TS proponents defend their little language very fiercely regardless of all the flaws it has. It's almost worth a study how Microsoft managed to do that. Overall a real pity, because there are so many better options and ideas for those who want static typing. TS is actually the worse choice IMAO.