Kotlin/JS で kotlinx.serialization を使う

Kotlin/JS + Gradle で kotlinx.serialization を使うメモ

build.gradle

plugins {
    id 'org.jetbrains.kotlin.js' version '1.3.72'
    id 'org.jetbrains.kotlin.plugin.serialization' version '1.3.72'
}

// ...

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-js"
    implementation npm("kotlinx-serialization-kotlinx-serialization-runtime", "0.20.0")
    // implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0"
    // ↑これだとダメ JVM用？
    testImplementation "org.jetbrains.kotlin:kotlin-test-js"
}

// ...