From cafc27aae9434d0d3cfec020f08aba67507740b4 Mon Sep 17 00:00:00 2001
From: Svyatoslav Kuzmich <svyatoslav.kuzmich@jetbrains.com>
Date: Mon, 20 Mar 2023 17:29:29 +0100
Subject: [PATCH] [Wasm] Add JsAny.unsafeCast

Replacement for Dynamic.unsafeCast, but limited to JsAny types where
it makes sense.
---
 libraries/stdlib/wasm/src/kotlin/js/JsAny.kt | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/libraries/stdlib/wasm/src/kotlin/js/JsAny.kt b/libraries/stdlib/wasm/src/kotlin/js/JsAny.kt
index 748c8d5f3f0..5e0b2758b6d 100644
--- a/libraries/stdlib/wasm/src/kotlin/js/JsAny.kt
+++ b/libraries/stdlib/wasm/src/kotlin/js/JsAny.kt
@@ -5,7 +5,19 @@
 
 package kotlin.js
 
+import kotlin.wasm.internal.ExcludedFromCodegen
+import kotlin.wasm.internal.WasmNoOpCast
+import kotlin.wasm.internal.implementedAsIntrinsic
+
 /**
  * Any JavaScript value except null or undefined
  */
-public external interface JsAny
\ No newline at end of file
+public external interface JsAny
+
+/**
+ * Cast JsAny to other Js type without runtime check
+ */
+@WasmNoOpCast
+@ExcludedFromCodegen
+public fun <T : JsAny> JsAny.unsafeCast(): T =
+    implementedAsIntrinsic
\ No newline at end of file