Hi everyone! I can’t seem to get to work source ma...

# kvision

[Miguel Vera Belmonte]

Hi everyone! I can’t seem to get to work source maps under the latest KVision release (4.8.1), using the LEGACY JS compiler.

Taking as base the fomantic example (I suppose could be any other example too), I’ve done as instructed in the docs:

To enable source maps you need to remove line sourceMaps = false from your build.gradle.kts file and remove line config.devtool = 'eval-cheap-source-map' from webpack.config.d/webpack.js file.

and enabled legacy compiler by setting under gradle.properties:

kotlin.js.compiler=legacy

But I’m not able to get source maps working. I think they were working on 4.1.0, which is the latest version I tried before updating. To test, I make a simple console.log() on App.kt and then I get the following error when clicking the line number on the console:

Could not load content for <webpack://fomantic/../src/main/kotlin/com/example/App.kt?f474> (HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME)

Is anyone having this issue as well?

[Miguel Vera Belmonte]

Found the issue! It’s due to source-map-loader npm package version mismatch (https://youtrack.jetbrains.com/issue/KT-46608). There is a workaround in the comments.

[Miguel Vera Belmonte]

Related: https://youtrack.jetbrains.com/issue/KT-44838

[Robert Jaros]

I'v tested this workaround a few days ago and even accidentally committed this in the template project:
https://github.com/rjaros/kvision-examples/blob/master/template/build.gradle.kts#L66

[Robert Jaros]

It should be fixed with kotlin 1.5.20