[caiocaiocaio]

Javascript is such a good language that, even after two decades of fixes, it's only good when you use a different language - specifically created to address JS's many problems - that compiles to it.

[s_y_n_t_a_x]

TypeScript is JavaScript. They follow and contribute to the Ecmascript spec.

It pretty much just strips the typing out when "compiling".

All the JS problems have been solved in ES6+

There are many languages that have supersets.