What is the status of J2CL?

[Konstantin Solomatov]

Hi,

I've heard about J2CL as a replacement of GWT Java->Js compiler. Are there any updates on it? Are there any chances that we will see it open sourced soon?

Thanks,
Konstnatin

[Kirill Prazdnikov]

It is interesting: does J2CL support JSNI or not. 

Currently, @JsIndexer annotation does exist, so that it is impossible to work with js-arrays without JSNI. 

There are possibilities for J2CL: to have @JsIndexer, to support JSNI, both, something else.

Konstantin, have you ever considered using Kotlin-js ?

[Brandon Donnelson]

No, JSNI will no longer be supported with J2CL, it won't be needed. That said, we are waiting on a core library with elemental to be released so that JSNI doesn't have to be used anymore, meaning you can work with arrays elements. It's a small lib.

Google is working on J2CL, they're close but more work is needed before the release. I can't speak to the timeline, but it sounded not to far off. 

[Goktug Gokdogan]

J2CL is not a replacement of GWT Java->Js compiler until it gets open-source and get decided by GWT steering as a viable replacement of the GWT compiler.

For arrays, you don't need something special. You can cast your javascript array to Object[] or a native jstype array  and use regular java array syntax.

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[Konstantin Solomatov]

Are there any updates on J2CL? More than 1 years has passed since the initial message. 

Thanks,

Kostya

[Goktug Gokdogan]

We have preview version already released to a group of contributors/steering committee members who are playing with it and see how it will fit into GWT 3.0 plan (things like maven workflow for J2CL + JsCompiler).

In the meantime, we are working towards some open source usability improvements (fixing bazel rules and open sourcing more pieces) before giving access to wider audience.

On Wed, Jan 10, 2018 at 2:48 PM, Konstantin Solomatov <konstantin...@gmail.com> wrote:

Are there any updates on J2CL? More than 1 years has passed since the initial message. 

Thanks,

Kostya

On Monday, November 28, 2016 at 12:09:37 PM UTC-5, Goktug Gokdogan wrote:

J2CL is not a replacement of GWT Java->Js compiler until it gets open-source and get decided by GWT steering as a viable replacement of the GWT compiler.

For arrays, you don't need something special. You can cast your javascript array to Object[] or a native jstype array  and use regular java array syntax.

On Mon, Nov 28, 2016 at 7:47 AM, Brandon Donnelson <brandon....@sencha.com> wrote:

No, JSNI will no longer be supported with J2CL, it won't be needed. That said, we are waiting on a core library with elemental to be released so that JSNI doesn't have to be used anymore, meaning you can work with arrays elements. It's a small lib.

Google is working on J2CL, they're close but more work is needed before the release. I can't speak to the timeline, but it sounded not to far off. 


On Monday, November 28, 2016 at 7:25:07 AM UTC-8, Kirill Prazdnikov wrote:

It is interesting: does J2CL support JSNI or not. 

Currently, @JsIndexer annotation does exist, so that it is impossible to work with js-arrays without JSNI. 

There are possibilities for J2CL: to have @JsIndexer, to support JSNI, both, something else.

Konstantin, have you ever considered using Kotlin-js ?

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