I have a slightly different problem with DCE… `browserDevelopmentWebpack` works fine, producing a la...

# javascript

[steamstreet]

I have a slightly different problem with DCE… browserDevelopmentWebpack works fine, producing a large file. When I run browserProductionWeback, the processDceKotlinJs task reports “NO-SOURCE”, and then browserProductionWebpack reports SKIPPED . My configuration is fairly vanilla… here’s the target definition:

kotlin {
    target {
        browser {
            useCommonJs()
            dceTask {
                keep("ktor-ktor-io.\$\$importsForInline\$\$.<http://ktor-ktor-io.io.ktor.utils.io|ktor-ktor-io.io.ktor.utils.io>")
            }
            webpackTask {
                output.libraryTarget = COMMONJS
            }
        }
    }
}

Any ideas what could be causing this?

[Sean Keane]

Whats the name of your project? When I was doing this to produce a lib via Webpack I had to add the following to my config.

js {
        browser {
            dceTask {
                keep("ktor-ktor-io.\$\$importsForInline\$\$.<http://ktor-ktor-io.io.ktor.utils.io|ktor-ktor-io.io.ktor.utils.io>")
                keep("multiplatform-lib")
            }
            webpackTask {
                mode = Mode.PRODUCTION
                sourceMaps = false
            }
        }
    }

[turansky]

DCE will keep your lib only if you add it in keep list

[steamstreet]

OK I found the problem, and it appears to be a bug with the DCE plugin. This was in a subproject, and in the root project, I have something like this:

subprojects {
  this.tasks.all {
  .. some configuration
  }
}

[steamstreet]

When I remove the this.tasks.all block, things work correctly (even if the block doesn’t do anything, the problem persists), so I presume there is something with the loading and configuration of the dce task at that time that causes things to not get the correct source location. This has not been the case with other plugins.

[turansky]

https://youtrack.jetbrains.com/issue/KT-36755

[turansky]

Eager configuretion - root cause of problem

[dazza5000]

do you think that is causing my problem too?

[turansky]

Do you have empty distribution?

[dazza5000]

when i use browserProductionWebpack it doesn't contain any of my methods / classes defined by keep

[Sean Keane]

Do you have your gradle file

[turansky]

Look like invalid keep instruction

[dazza5000]

I figured it out - put the answer here https://stackoverflow.com/questions/60581223/dcetask-keep-is-not-preserving-defined-classes/60592459#60592459