JSNI Javascript promises

[Alex Ph]

Hi all,
I start to write a wrapper around a Javascript lib, where function calls are handled with promises, like get(bla).then(doThis,doThat).catch(stuff). If I try to wrap this function the gwt compiler "says" that I missed a name after . operator ... .catch(function...
After googling around I found out, that catch is a restricted keyword and I cannot use this inside the native block. Is it possible to escape the .catch(stuff) to get this work?

Thnx
Alex

[Jens]

I have written a Promise library that uses native promises of the browser if possible and emulated promises otherwise. I had the same problem for native promises. I think it is forbidden to define a function with a name "catch" as it is a keyword however browsers have cheated on that in case of native promises.

In my case I could workaround it by using this["catch"](..) instead of this.catch(...). Maybe thats possible in your case too.

-- J.

[Manuel Carrasco Moñino]

Out of curiosity, have you guys tried gwt-query promises? they have the same syntax than jQuery ones, and work in browser and server sides.

You can see how them work in these slides: http://slides.gquery.org/gwtcreate/gwtcreate.html#18

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[Jens]

Out of curiosity, have you guys tried gwt-query promises? they have the same syntax than jQuery ones, and work in browser and server sides.

You can see how them work in these slides: http://slides.gquery.org/gwtcreate/gwtcreate.html#18

I want something that can directly map to ES6 promises natively implemented in various browser (http://caniuse.com/promises) and uses a very similar API style as ES6 promises. Also I wanted more type safety in then().

-- J.

[Peter Donald]

Out of curiosity, is this library open source or is it likely to be?

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Cheers,

Peter Donald

[Jens]

Out of curiosity, is this library open source or is it likely to be?

It will soon be open source.

-- J.