Preparations for actually embedding

web/core/src/jsMain/kotlin/org/jetbrains/compose/skiko/skiko.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2020-2021 JetBrains s.r.o. and respective authors and developers.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package org.jetbrains.compose.web.skiko
+
+import org.jetbrains.compose.web.dom.ElementScope
+import org.w3c.dom.HTMLCanvasElement
+
+fun ElementScope<HTMLCanvasElement>.ping() {
+    println("PING!!!")
+}

web/core/src/jsTest/kotlin/skiko/CanvasSkikoTests.kt

@@ -0,0 +1,17 @@
+package org.jetbrains.compose.web.core.tests
+
+import kotlin.test.*
+import org.jetbrains.compose.web.testutils.*
+import org.jetbrains.compose.web.dom.*
+import org.jetbrains.compose.web.skiko.ping
+
+class CanvasSkikoTests  {
+    @Test
+    fun canvasSkikoTest() = runTest() {
+        composition {
+            Canvas() {
+                ping()
+            }
+        }
+    }
+}