How to transfer KotlinJs dependencies?

Multiplatform
1

I am creating a multiplatform library and have included a dependency in my jsMain and jvmMain sourcesets:

implementation("net.onedaybeard.bitvector:bitvector-js:0.1.4")
implementation("net.onedaybeard.bitvector:bitvector-jvm:0.1.4")

When building the JVM everything works, but for the JS it expects the module bitvector:

if (typeof bitvector === 'undefined') {
  throw new Error("Error loading module 'common'. Its dependency 'bitvector' was not found. Please, check whether 'bitvector' is loaded prior to 'common'.");
}

I know it is part of the JAR file of net.onedaybeard.bitvector:bitvector-js:0.1.4 but what do I need to do to transfer the dependencies to the node_modules of my own library?

I think this should be obtained by doing a Gradle task, but unsure of how to do this.

EDIT
Just when I posted this I saw in build/js/packages_imported/bitvector/0.1.4 the JS files. However, I donā€™t know if it is the correct way to get it from there?

2

Hi there

The dependency management on K/JS multiplatform is a bit messy, you have two possible ways, either use the nodejs plugin to create a task that will install the dependencies or use a plain old gradle task that will take your dependencies from maven and copy them in the folder manually.

I usually do the first one but you might end up doing the second if your dep is not on the NPM registry.

3

Hello, thanks for your answer.

Good to know that there isnā€™t a standard approach to this. I guess it might improve in the future.

At the moment I solved it with a custom task that creates my main and test NPM packages and includes all the dependencies there. Seems to work.

Is there an example of ā€˜option 2ā€™?

4

Option 2 looks a bit like this, assuming your JS module name is ā€œjsDafaultā€:

task copyDepIntoModules(type: Copy, dependsOn: [configurations.jsDefault]){
    outputs.upToDateWhen {false}
    from {
        configurations.jsDefault.filter{ it.path.contains("theDependencyToCopy") }.collect { zipTree(it) }
    }
    into "theDirectoryOfYourNodeProject/node_modules"
}

This task will extract the given dependency from the maven dependencies and copy it to the directory of your choosing. Itā€™s not the most elegant way of doing it but I struggled a lot with it and didnā€™t find the motivation to enhance it.

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