On: TypeScript: a language for application-scale JavaScript development

[aaronblohowiak]

They added static typing to javascript, except you can still pass a number to a function that takes a string. In their example http://www.typescriptlang.org/Playground/ replace the

   new Greeter("World");

with

   new Greeter(5);

and it still works. What good is adding types to functions if they are ignored?

[glennsl → aaronblohowiak]

TypeScript will not abort compilation, but it will give you a warning. In the playground, that would be the red squiggly line indicating an error.

[sophiebits → aaronblohowiak]

In the "Walkthrough: Types" example (as well as the "Classes" one), that gives me an error.