diff --git a/libraries/stdlib/js/src/org.w3c/deprecated.kt b/libraries/stdlib/js/src/org.w3c/deprecated.kt
new file mode 100644
index 00000000000..f2d9e76f956
--- /dev/null
+++ b/libraries/stdlib/js/src/org.w3c/deprecated.kt
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.w3c.dom
+
+@Deprecated("Use UnionMessagePortOrWindowProxy instead.", ReplaceWith("UnionMessagePortOrWindowProxy"))
+typealias UnionMessagePortOrWindow = UnionMessagePortOrWindowProxy
+
+@Deprecated("Use `as` instead.", ReplaceWith("`as`"))
+var HTMLLinkElement.as_
+    get() = `as`
+    set(value) {
+        `as` = value
+    }
+
+@Deprecated("Use `is` instead.", ReplaceWith("`is`"))
+var ElementCreationOptions.is_
+    get() = `is`
+    set(value) {
+        `is` = value
+    }
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