Convert :workflow-runtime to KMM

workflow-runtime/build.gradle.kts

@@ -27,22 +27,24 @@ kotlin {
       }
     }
   }
+  ios()
 
   sourceSets {
-    val jvmMain by getting {
+    all {
+      languageSettings.apply {
+        optIn("kotlin.RequiresOptIn")
+      }
+    }
+    val commonMain by getting {
       dependencies {
-        compileOnly(libs.jetbrains.annotations)
-
         api(project(":workflow-core"))
-        api(libs.kotlin.jdk6)
         api(libs.kotlinx.coroutines.core)
       }
     }
-    val jvmTest by getting {
+    val commonTest by getting {
       dependencies {
-        implementation(libs.kotlinx.coroutines.test)
+        implementation(libs.kotlinx.coroutines.test.common)
         implementation(libs.kotlin.test.jdk)
-        implementation(libs.kotlin.reflect)
       }
     }
   }

workflow-runtime/src/jvmMain/kotlin/com/squareup/workflow1/SimpleLoggingWorkflowInterceptor.kt → workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/SimpleLoggingWorkflowInterceptor.kt

@@ -113,7 +113,7 @@ public open class SimpleLoggingWorkflowInterceptor : WorkflowInterceptor {
     println(text)
   }
 
-  protected open fun logError(text: String): Unit = System.err.println(text)
+  protected open fun logError(text: String): Unit = println("ERROR: $text")
 
   private fun formatLogMessage(
     name: String,