I was doing the tutorial for React Kotlin and couldnt even finish the setup step because the server does not start.
The code is unchanged : https://github.com/kotlin-hands-on/web-app-react-kotlin-js-gradle
Stacktrace:
[webpack-cli] Unable to load '@webpack-cli/serve' command
[webpack-cli] TypeError: options.forEach is not a function
[webpack-cli] TypeError: options.forEach is not a function
I saw this issue : https://github.com/webpack/webpack-cli/issues/2990 but I'm unable to implement the fix proposed (change the webpack-cli version and remove the webpack-cli/serve from yarn.lock) because I can't find how to change these on the kotlin js gradle plugin.
Even simple browser application from intelliJ is broken with the same error.
Try to update webpack-cli:
rootProject.plugins.withType(org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin::class.java) {
rootProject.the<org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension>().versions.webpackCli.version = "4.9.0"
}
Had the same issue: adding this option to the project gradle.properties
kotlin.js.webpack.major.version=4
fixed it - reference: https://kotlinlang.org/docs/js-project-setup.html#webpack-version