es6 type hinting?

[Tony pee]

this is a little OT but how is there type hinting in some of the angular 2 code? eg:

https://github.com/angular/templating/blob/master/src/compiler/selector.js

i didnt think this was a feature of es6? does it get compile time type checking?

cheers

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Tony Polinelli

[KamBha]

I don't know how if it will make it in es 6, but es.next does have a proposal that matches that syntax:
http://wiki.ecmascript.org/doku.php?id=strawman:guards

I have not seen anything about how one defines a guard. I assume it is whatever matches the instanceof for that class.

The real question is will there ever be a version of JS with annotations? I don't see any proposal on the ecmascript wiki about annotations (which is a little surprising as annotations would solve a lot of problems in angular and other applications).

Kamal.

[Tony pee]

So currently is this a feature of traceur? cant seem to find how this code works 

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Tony Polinelli

[Tony pee]

this mailing list is bawwls. everytime i post.. crickets.. 

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Tony Polinelli

[Mark Volkmann]

I don't believe Traceur supports that.

You'd have better luck getting a response to ES6/Traceur questions here: es-di...@mozilla.org.

R. Mark Volkmann
Object Computing, Inc.

[Tony pee]

looks like this is finally answered with the release of information about atScript ;P