From 5f50d11bf795dae76ef24eeeef1499a50e874ec8 Mon Sep 17 00:00:00 2001
From: Daniel Tschinder <daniel@tschinder.de>
Date: Thu, 13 Dec 2018 23:24:43 -0800
Subject: [PATCH] Correctly transform spreads to use proper concat method
 (#9108)

* Correctly transform spreads to use proper concat method

* Add tests to ensure array spread clones elements
---
 test/fixtures/destructuring/array-unpack-optimisation/output.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/fixtures/destructuring/array-unpack-optimisation/output.js b/test/fixtures/destructuring/array-unpack-optimisation/output.js
index 7743f54e7c6a..32816cdc73c4 100644
--- a/test/fixtures/destructuring/array-unpack-optimisation/output.js
+++ b/test/fixtures/destructuring/array-unpack-optimisation/output.js
@@ -21,7 +21,7 @@ var _ref4 = [a[1], a[0]];
 a[0] = _ref4[0];
 a[1] = _ref4[1];
 
-var _ref5 = babelHelpers.toConsumableArray(foo).concat([bar]),
+var _ref5 = [].concat(babelHelpers.toConsumableArray(foo), [bar]),
     a = _ref5[0],
     b = _ref5[1];