TypeScript: a language for application-scale JavaScript development

Post by ConstantineXVI » Wed, Oct 03, 2012, 7:53 PM UTC

zem wrote: post #201

ConstantineXVI wrote: post #199

Earlier quoted context omitted.

I'm getting the impression that TS is avoiding making too many dramatic changes to JS. Functions that return undefined in vanilla JS would suddenly return whatever happened to be the last statement; likely leading to unexpected behavior.

i wonder how hard it would be for their compiler to catch the opposite case, then - a program using the return value of a function without a return statement. i think that was my most common bug when i was doing javascript programming, because all the other languages i was using at the time had implicit returns.

Post by hermanhermitage » Thu, Oct 04, 2012, 4:52 AM UTC

jasondenizac wrote: post #270

hermanhermitage wrote: post #227

Earlier quoted context omitted.

This looks excellent a nice restrained effort. Hasn't fallen into the trap that ActionScript3 did with too much ceremony, and its nice to see a syntactic super-setting approach rather than Dart's. Now what I'd like to see in Javascripts evolution (non backwards compatible): * Subract: Removing parts of the language - let crockford free to rip out the bad parts. * Enhance: Bring in some more taste of Scheme. * Replace…

new scoping for `var`? Like the block-scoped `let`?

Post by rictic » Sat, Oct 06, 2012, 4:08 PM UTC

oinksoft wrote: post #156

It seems to me that the type checking in TypeScript is extremely limited compared to what the Closure Compiler supports. The examples only show simple `fooInstance : Foo` examples, whereas Closure supports function prototype validation and such, a la C. I will need to see more elaborate examples. Granted, there is no documentation that I could find on the website. I understand that this is a "preview," but I disagree…