Fix wasm target configuration

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-tools = "0.14.6-kotlin-1.8.20"
+tools = "0.14.7-kotlin-1.8.20"
 kotlin = "1.8.20"
 atomicfu = "0.20.0"
 binary-compatibility-validator = "0.13.0"
@@ -20,7 +20,7 @@ xmlutil = "0.84.3"
 yamlkt = "0.12.0"
 jsBom = "1.0.0-pre.530"
 junit = "5.9.2"
-compose = "1.3.0"
+compose = "1.4.0"
 logback = "1.4.6"
 
 [libraries]

src/main/kotlin/space/kscience/gradle/KScienceExtension.kt

@@ -426,9 +426,24 @@ public open class KScienceMppExtension(project: Project) : KScienceExtension(pro
         project.pluginManager.withPlugin("org.jetbrains.kotlin.multiplatform") {
             project.configure<KotlinMultiplatformExtension> {
                 wasm {
-                    browser()
+                    browser {
+                        testTask {
+                            useKarma {
+                                this.webpackConfig.experiments.add("topLevelAwait")
+                                useChromeHeadless()
+                                useConfigDirectory(project.projectDir.resolve("karma.config.d").resolve("wasm"))
+                            }
+                        }
+                    }
                     block()
                 }
+                sourceSets {
+                    getByName("wasmTest") {
+                        dependencies {
+                            implementation(kotlin("test"))
+                        }
+                    }
+                }
             }
         }
     }