If JS ever adds type checking, I hope it doesn't choose Typescript.
We need a type system that is actually sound and TS is intentionally unsound. We need a type system that doesn't allow bad coding practices like TS does. We need a type system that enforces program design that allows programs to be fast. We need a Hindley Milner type system.
If you want a module to be typed, add a `"use type"`. This should disallow bad parts of the language like type coercion. It should disallow things that hurt performance like changing object shape/value type or making arrays of random collections of stuff. Incoming data from untyped modules would either coerce or throw errors if coercion can't be done at which point the compiler can deeply-optimize the typed code because it would have far stronger type guarantees and wouldn't have a risk of bailing out.
We need a type system that is actually sound and TS is intentionally unsound. We need a type system that doesn't allow bad coding practices like TS does. We need a type system that enforces program design that allows programs to be fast. We need a Hindley Milner type system.
If you want a module to be typed, add a `"use type"`. This should disallow bad parts of the language like type coercion. It should disallow things that hurt performance like changing object shape/value type or making arrays of random collections of stuff. Incoming data from untyped modules would either coerce or throw errors if coercion can't be done at which point the compiler can deeply-optimize the typed code because it would have far stronger type guarantees and wouldn't have a risk of bailing out.