When generating Javascript binaries in dist/js fol...

# javascript

[PHondogo]

When generating Javascript binaries in dist/js folder i see *.mjs files that are never used/downloaded when browsing app.
Why are they needed?
Is it safe to remove them from distribution?
Kotlin 2.2.20-Beta2
Compose 1.9.0-rc01

[Artem Kobzar]

@Ilya Goncharov [JB], is it true that the dist directory contains the files after webpack procesing?

[Ilya Goncharov [JB]]

dist directory shod contain webpack output and all resources

[Artem Kobzar]

And do we copy ourselves something to the directory?

[Artem Kobzar]

Because it's quite weird that mjs files appear in the directory, if webpack generates js

[Ilya Goncharov [JB]]

We can copy resources IIRC, and we copy webpack output there

[PHondogo]

I see these files in dist/js/productionExecutable:

7c00bf3a63531ae384d9.wasm
731.js
731.js.map
js-reexport-symbols.mjs
app.js
app.js.LICENSE.txt
app.js.map
skiko.mjs
skiko.wasm
skikod8.mjs

[Artem Kobzar]

And do you have something like reexport-symbols module?

[PHondogo]

No

[PHondogo]

Also i don't know what is 731. It is not used when browsing.

[Artem Kobzar]

I believe it could be some async chunk to load, but I'm not sure. I need to inspect the code to understand the purpose of the each chunk generated by webpack

[PHondogo]

If needed more info for reproduce, please ask.
I'm declaring

browser{useEsModules()}

just in case it may help

[Edoardo Luppi]

731 is a chunk produced by Webpack.

[Edoardo Luppi]

As far as I recall, the WASM part of Kotlin always operates under ESM mode. So maybe that's why the skiko JS wrapper is generated with the .mjs extension.

[PHondogo]

skiko.wasm also is not used. 7c00bf3a63531ae384d9.wasm is used instead (it is the copy of skiko.wasm but with unique name)
May be it should also be filtered out.