A modern programming language that makes developers happier.

kotlinlang

Hello everyone! :kotlin::the_horns:

I'm new around here, but I have decided recently I want to contribute to the Kotlin project in whatever way I can.
Right now I would like to pick <https://youtrack.jetbrains.com/issue/KT-59119/WASM-println-in-tests-doesnt-show-a-line-break|this issue> up as it seems like a neat one to grab.

Could someone instruct what am I to do next? More specifically if I just assign it to myself and start working on it.

Many thanks in advance :innocent:

Hi! Nice to hear. Please drop a message in the issue that you working on it (when you start).

Okay, so no need to assign it to myself, I guess.

Hey, I've had a look through the sources of the `kotlin` project, but I couldn't quite get my head wrapped around as to what exact implementation is kotlin referencing whenever a `println` is called.

My guess right now is that there's a place somewhere in the `wasm` "module" where we map these calls.

If I'm wrong, could you point me in the right direction? It's a really intriguing bug :thinking_face: 

FYI, I've also searched for the `wasmTest` gradle task, nowhere to be found :worried: 

<@U0BMF6PDJ> kind reminder on this one :innocent: 

or perhaps could someone lend a couple of hints? many thanks :smiley: 

Did you manage to build the project? If not please take a look here <https://github.com/jetBrains/kotlin#building>

Also look <https://github.com/JetBrains/kotlin/blob/master/docs/contributing.md>

Gradle tasks:
`:wasm.tests:test`  — to run compiler tests fro wasm compiler backend
`:kotlin-stdlib-wasm-js:check` -- to run stdlib tests for wasm-js target

`println` implementation for `wasm-js` is <https://github.com/JetBrains/kotlin/blob/8cc066069385eff4c4fcc38eb6d00e466ba772a3/libraries/stdlib/wasm/js/src/kotlin/io.kt|here>

Many thanks for the pointers! Apparently my hunch was right as I had already looked over the file where the `println` implementation lies.

I haven't managed to build the project due to some issues with my environment, I'll have a look over that doc and try again.

Hey Zalim, I've managed to build the project and run those gradle tasks. Problem is I can't really discern if the bug is reproducible, looking through the tests report output for `kotlin-stdlib-wasm-js:check`, seems to me that the output does in fact show line breaks.

```test.js.KormaTest.foo[wasm, node] STANDARD_OUT
    0.0313984751701355
    1023450032
    0.029999999329447746
    1022739087```
How should I proceed in this case?

FYI, I've ran the test from <https://youtrack.jetbrains.com/issue/KT-59119/WASM-println-in-tests-doesnt-show-a-line-break|the issue> using `print` instead of `println` and the same occurs (as expected I think, judging from <https://github.com/JetBrains/kotlin/blob/8cc066069385eff4c4fcc38eb6d00e466ba772a3/libraries/stdlib/wasm/js/src/kotlin/io.kt#L19|the implementation>.

:man-shrugging: IDK, it’s worth to ask in the issue.

you also can try to reproduce with 1.9.0 or 1.9.0-Beta

Should I tag someone specifically? If not, sure, I can leave a message with my findings.