> just a matter of time before types make it into the standard

I hope so too. TypeScript has done so many things right in its design and implementation - starting from Anders Hejlsberg, with expertise in creating numerous languages; backward compatibility to allow gradual and seamless migration from JS to TS; structural typing; editor/IDE integration via language server; good documentation; corporate backing (maybe not necessary, but like React, I think it was a big factor in its wide adoption).