If I add coroutines to my project the resulting bu...

# javascript

[hellman]

If I add coroutines to my project the resulting bundle is too big and webpack issues a warning in the JS console, even if I add the DCE plugin. Not sure what webpack configuration I need to fix that. Any suggestions?

[Roman Artemev [JB]]

Hi, what size of before/after DCE?

[hellman]

1.6 mb vs 392 kb

[hellman]

I am using coroutines in this project

[hellman]

This is my build.gradle for the project.

build.gradle

[Roman Artemev [JB]]

Is that size of webpack bundle?

[hellman]

yep

[Roman Artemev [JB]]

Is webpack minifier turned on?

[hellman]

That is the configuration I'm looking for

[Roman Artemev [JB]]

FYI: It would be great if you move from deprecated frontend plugin to https://mvnrepository.com/artifact/org.jetbrains.kotlin.js/org.jetbrains.kotlin.js.gradle.plugin

[hellman]

Ok. But then the compileKotlin2Js section doesn't work

[hellman]

I know nothing here is final/released, but I think there must be some documentation that is wrong

[Roman Artemev [JB]]

Yes, just use compileKotlinJs instead

[hellman]

Is there an example somewhere that shows the new plugin?

[Roman Artemev [JB]]

There is an example how webpack might be configured
https://github.com/Kotlin/kotlin-frontend-plugin/blob/master/examples/frontend-only/webpack.config.d/minify.js

[Roman Artemev [JB]]

You should create a directory with name webpack.config.d next to build.gradle and put config there

[hellman]

but that uses the frontend plugin?

[Roman Artemev [JB]]

Yes, this is to fix your current issue. Moving from FE plugin is rather recommendation.

[hellman]

so same config, just different plugin?

[Roman Artemev [JB]]

If I got you the FE plugin is used, so your issue with size of final bundle should be fixed for FE plugin. The possible solution is using additional minifier in webpack.

[Roman Artemev [JB]]

Moving to new kotlin js gradle plugin is recommendation. I will post example for it asap, please wait a bit

[Roman Artemev [JB]]

Probably this repo might help you with new plugin.
https://github.com/mkraynov/kfsad/tree/kotlin-1.3.40-preview

[hellman]

Ah, thanks. That looks more helpful

[hellman]

Where is the source code for the plugin? Would make it easier to figure out what configurations are supported.

[Roman Artemev [JB]]

https://github.com/JetBrains/kotlin/tree/master/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js

[Big Chungus]

In npm block sed mode production. This minifies the bundle

[Big Chungus]

That's for the old plugin ofc

[hellman]

Yeah, I want to use the new plugin

[hellman]

not that I get the new plugin to work very well either

[Big Chungus]

I'd wait until they publish the documentation for it

[hellman]

but that’s no fun 🙂

[spierce7]

@Hellcat Did this resolve things? I’m curious to know what size you ended up with.

[hellman]

Nope. Didn’t solve it yet. I was hoping the new plugin would help, but no success there either. Postponing this for now. I got some other more urgent stuff I need to fix