gwtproject/gwt

GWT Open Source Project

Rocco De Angelis

@rdeangelis83

Hi All, if I remember correctly there was script to package the gwt-sdk build result for maven?

Colin Alworth

@niloc132

@rdeangelis83 please see maven/push-gwt.sh

it pushes to your local .m2/repository by default

Rocco De Angelis

@rdeangelis83

Hi @niloc132 , I have try patch. But it seems that "constructInvocation(function.getSourceInfo(), "Object.defineProperty", function, prop, descriptor).makeStmt();" expect an indexedMethod

So maybe something like that: https://github.com/gwtproject/gwt/blob/ebc32a0364d64ad7531e3fcfa51362f95f2398d4/dev/core/src/com/google/gwt/dev/jjs/impl/GenerateJavaScriptAST.java#L2320

Colin Alworth

@niloc132

is this a compile time failure?

i thought i had understood from related code that this could take a dotted reference and break it down

      JsStatement createGwtOnLoadFunctionCall =
          constructInvocation("ModuleUtils.addInitFunctions", arguments).makeStmt();

for example

but perhaps that is used as a key (irritating how sometimes strings must be individual js identifiers, and sometimes not...)

Rocco De Angelis

@rdeangelis83

Unable to locate index method: Object.defineProperty. Yep during the compile time.

I will try to fix it tomorrow morning.

Colin Alworth

@niloc132

interestingly, the code you referenced says it is Object.defineProperties, but actually is Runtime.defineProperties

perhaps these are java references and i missed the point - i was trying to come up with the js name reference

Rocco De Angelis

@rdeangelis83

Yahhh I have seen that. :)

Colin Alworth

@niloc132

i'll have a patch for you shortly - locally i did a bit of other cleanup, ill try to run this today and make sure it goes

Runtime.defineProperties is a helper that does some extra work, in gwt

i don't think we actually want that, based on the chromium link you gave me

but it would obfuscate better

if i get it running, i'll put a patch up on gwt-review for you to try

Rocco De Angelis

@rdeangelis83

@niloc132 THX!

Short question: What is J2Wasm?

Thomas Broyer

@tbroyer

An experiment to output Web Assembly rather than Closure-style JS.

See google/j2cl#93 and https://github.com/google/j2cl/issues/88#issuecomment-904967247

Rocco De Angelis

@rdeangelis83

WOW

Colin Alworth

@niloc132

(there is also a kotlin backend now too - ostensibly your java can be passed through j2cl to emit kotlin sources)

@rdeangelis83 i'm sorry, i didnt get around to finishing something, but i'll put up a gist if you want to try what i did sketch out - i think the structure is right, but i didn't get the chance to validate it

1 reply

Rocco De Angelis

@rdeangelis83

@niloc132 THX 🙏🏻 I will give it tomorrow a try

Miroslav Pokorny

@mP1

always wondered how much of blazor output is actually wasm, especially considering the question of GC.

Or Goshen

@Oberonc

how can I debug server side in a project with client/shared/server ?

how to attach a debugger ?

I have a dead lock situation and I have hard time figuring the cause

Colin Alworth

@niloc132

@Oberonc easiest answer is to run the server as normal, whatever you do in production, and attach the debugger to that - typically you just pass an extra jvm arg, but sometimes your IDE has specific integration

if you need to debug gwt at the same time, sdm can run and let you serve its js from any web server that can serve normal js

if you are already using gwt's DevMode process, just starting it with your IDE's debug settings will let you debug the server classes normally, but we generally advise against that

Rocco De Angelis

@rdeangelis83

Maybe also helpful for others, I have repaired the Chrome devtools formatters for GWT (orginal code from Sergey Vasilinets):
https://gist.github.com/rdeangelis83/cec831abb34903fe251ede29fdbe7b12
The code contains some obfuscated property and method name which maybe needs to be adapted.
That is something that could be improved in the future.

Here also the orginal doc: https://docs.google.com/document/d/1FTascZXT9cxfetuPRT2eXPQKXui4nWFivUnS_335T3U/edit#

Frank Hossfeld

@FrankHossfeld

nice work

Rocco De Angelis

@rdeangelis83

@niloc132 "Function Name Property" patch works like a charm :)

Rocco De Angelis

@rdeangelis83

@niloc132 do you think that is really necessary to support the old function.displayName property?

Colin Alworth

@niloc132

@rdeangelis83 haven't researched yet to see who else uses it, but probably should leave it in at least a little while for old chrome installs

John Huss

@johnthuss

The possibility of using kotlin as a source language for j2cl is cool. This is one of the things holding me back for diving into kotlin and using it everywhere instead of java.

Colin Alworth

@niloc132

@johnthuss last i checked (about 3 years ago) IJ did a pretty decent job of auto-converting java to kotlin

it got confused about SAM interfaces for lambdas, but those are worth getting right imho, possibly by hand, rather than giving it a real interface

Thomas Broyer

@tbroyer

Fwiw, the current support for Kotlin is as a target language, not a source language: https://github.com/google/j2cl/blob/10fdd30b2d55c58c71c0fabb4fdc8ebe2bd1f6a0/build_defs/internal_do_not_use/j2kt_library.bzl

You can target JS with Kotlin/JS then: https://kotlinlang.org/docs/js-overview.html

John Huss

@johnthuss

OK. What is the use case for using kotlin as a target? Is this to improve on IntelliJ's built-in conversion function from java to kotlin sources?

Thomas Broyer

@tbroyer

I have no idea. Possibly a replacement for J2ObjC where Java is transformed to Kotlin and then compiled for iOS through Kotlin/Native?

Colin Alworth

@niloc132

right, sorry i didn't clarify that above, this is a new backend, not a frontend (the only frontends are still jdt for java or javac for java)

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