Add wasm stdlib extension smoke test

lynglib/src/commonTest/kotlin/StdlibWasmSmokeTest.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2026 Sergey S. Chernov
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+import kotlinx.coroutines.test.runTest
+import net.sergeych.lyng.eval
+import kotlin.test.Test
+
+class StdlibWasmSmokeTest {
+    @Test
+    fun stdlibIterableExtensionsSmoke() = runTest {
+        eval(
+            """
+            assertEquals(6, [1,2,3].sum())
+            assertEquals([2,4,6], [1,2,3].map { it * 2 })
+            assertEquals([1,2,2,3,3,4], [1,2,3].flatMap { [it, it+1] })
+            """.trimIndent()
+        )
+    }
+}