KSP2: Fix support of wasm

gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspAATask.kt

@@ -475,7 +475,7 @@ abstract class KspAAWorkerAction : WorkAction<KspAAWorkParameter> {
             KotlinPlatformType.js, KotlinPlatformType.wasm -> {
                 KSPJsConfig.Builder().apply {
                     this.setupSuper()
-                    backend = if (platformType == KotlinPlatformType.js) "JS" else "Wasm"
+                    backend = if (platformType == KotlinPlatformType.js) "JS" else "WASM"
                 }.build()
             }
 

integration-tests/src/test/kotlin/com/google/devtools/ksp/test/KMPImplementedIT.kt

@@ -108,6 +108,30 @@ class KMPImplementedIT(useKSP2: Boolean) {
         }
     }
 
+    @Test
+    fun testWasm() {
+        Assume.assumeFalse(System.getProperty("os.name").startsWith("Windows", ignoreCase = true))
+        val gradleRunner = GradleRunner.create().withProjectDir(project.root)
+
+        gradleRunner.withArguments(
+            "--configuration-cache-problems=warn",
+            "clean",
+            ":workload-wasm:build"
+        ).build().let {
+            Assert.assertEquals(TaskOutcome.SUCCESS, it.task(":workload-wasm:build")?.outcome)
+            verify(
+                "workload-wasm/build/libs/workload-wasm-wasm-js-1.0-SNAPSHOT.klib",
+                listOf(
+                    "default/ir/types.knt"
+                )
+            )
+            Assert.assertFalse(it.output.contains("kotlin scripting plugin:"))
+            Assert.assertTrue(it.output.contains("w: [ksp] platforms: [wasm-js"))
+            Assert.assertTrue(it.output.contains("w: [ksp] List has superTypes: true"))
+            checkExecutionOptimizations(it.output)
+        }
+    }
+
     @Test
     fun testJsErrorLog() {
         Assume.assumeFalse(System.getProperty("os.name").startsWith("Windows", ignoreCase = true))

integration-tests/src/test/resources/kmp/annotations/build.gradle.kts

@@ -12,6 +12,10 @@ kotlin {
         browser()
         nodejs()
     }
+    wasmJs {
+        browser()
+        binaries.executable()
+    }
     linuxX64() {
     }
     androidNativeX64() {

integration-tests/src/test/resources/kmp/settings.gradle.kts

@@ -19,6 +19,7 @@ include(":annotations")
 include(":workload")
 include(":workload-jvm")
 include(":workload-js")
+include(":workload-wasm")
 include(":workload-linuxX64")
 include(":workload-androidNative")
 include(":test-processor")

integration-tests/src/test/resources/kmp/workload-wasm/build.gradle.kts

@@ -0,0 +1,26 @@
+plugins {
+    kotlin("multiplatform")
+    id("com.google.devtools.ksp")
+}
+
+version = "1.0-SNAPSHOT"
+
+kotlin {
+    wasmJs {
+        binaries.executable()
+        browser()
+    }
+    sourceSets {
+        val wasmJsMain by getting {
+            dependencies {
+                implementation(project(":annotations"))
+            }
+        }
+    }
+}
+
+dependencies {
+    add("kspCommonMainMetadata", project(":test-processor"))
+    add("kspWasmJs", project(":test-processor"))
+    add("kspWasmJsTest", project(":test-processor"))
+}

integration-tests/src/test/resources/kmp/workload-wasm/src/wasmJsMain/kotlin/com/example/Bar.kt

@@ -0,0 +1,5 @@
+package com.example
+
+class Bar {
+    val baz = Foo().baz
+}

integration-tests/src/test/resources/kmp/workload-wasm/src/wasmJsMain/kotlin/com/example/Baz.kt

@@ -0,0 +1,5 @@
+package com.example
+
+class Baz {
+    val bar = Foo().bar
+}

integration-tests/src/test/resources/kmp/workload-wasm/src/wasmJsMain/kotlin/com/example/ToBeValidated.kt

@@ -0,0 +1,9 @@
+package com.example
+
+// https://github.com/google/ksp/issues/632
+@MyAnnotation
+@ExperimentalMultiplatform
+class ToBeValidated {
+    // https://github.com/google/ksp/issues/574
+    val ToBeInferred = listOf("string")
+}

integration-tests/src/test/resources/kmp/workload/build.gradle.kts

@@ -13,6 +13,10 @@ kotlin {
         browser()
         nodejs()
     }
+    wasmJs {
+        browser()
+        binaries.executable()
+    }
     linuxX64() {
         binaries {
             executable()

integration-tests/src/test/resources/kmp/workload/src/wasmJsMain/kotlin/Bar.kt

@@ -0,0 +1,5 @@
+package com.example
+
+class Bar {
+    val baz = Foo().baz
+}

integration-tests/src/test/resources/kmp/workload/src/wasmJsMain/kotlin/Baz.kt

@@ -0,0 +1,5 @@
+package com.example
+
+class Baz {
+    val bar = Foo().bar
+}

kotlin-analysis-api/src/main/kotlin/com/google/devtools/ksp/impl/KotlinSymbolProcessing.kt

@@ -182,7 +182,7 @@ class KotlinSymbolProcessing(
                     JvmPlatforms.jvmPlatformByTargetVersion(jvmTarget)
                 }
                 is KSPJsConfig -> when (kspConfig.backend) {
-                    "WASM" -> WasmPlatforms.Default
+                    "WASM" -> WasmPlatforms.wasmJs
                     "JS" -> JsPlatforms.defaultJsPlatform
                     else -> throw IllegalArgumentException("Unknown JS backend: ${kspConfig.backend}")
                 }