From 7bbb5b77db8a5625c365bb10e98eede7b74cff1f Mon Sep 17 00:00:00 2001
From: Ilya Goncharov <ilya.goncharov@jetbrains.com>
Date: Tue, 2 Mar 2021 16:45:19 +0300
Subject: [PATCH] [JS IR] Concat varargs with non varargs on compile time for
 function w/o receiver

---
 .../backend/js/transformers/irToJs/jsAstUtils.kt  | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/jsAstUtils.kt b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/jsAstUtils.kt
index f421d6d4cdf..e09df42ac49 100644
--- a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/jsAstUtils.kt
+++ b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/jsAstUtils.kt
@@ -205,10 +205,17 @@ fun translateCall(
                 }
             }
         } else {
-            JsInvocation(
-                JsNameRef("apply", JsNameRef(symbolName)),
-                listOf(JsNullLiteral(), argumentsAsSingleArray)
-            )
+            if (argumentsAsSingleArray is JsArrayLiteral) {
+                JsInvocation(
+                    JsNameRef(symbolName),
+                    argumentsAsSingleArray.expressions
+                )
+            } else {
+                JsInvocation(
+                    JsNameRef("apply", JsNameRef(symbolName)),
+                    listOf(JsNullLiteral(), argumentsAsSingleArray)
+                )
+            }
         }
     } else {
         JsInvocation(ref, listOfNotNull(jsExtensionReceiver) + arguments)