From 3961b720be665909cd412dc281141949e3b52427 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Fri, 7 Aug 2015 17:47:09 +0100
Subject: [PATCH] check if a node is static before using it as the reference
 for an object spread

---
 .../src/transformation/transformers/es6/destructuring.js      | 4 ++--
 .../es6.destructuring/object-advanced/actual.js               | 1 +
 .../es6.destructuring/object-advanced/expected.js             | 3 +++
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/packages/babel/src/transformation/transformers/es6/destructuring.js b/packages/babel/src/transformation/transformers/es6/destructuring.js
index ba63140af9..874c34bcd1 100644
--- a/packages/babel/src/transformation/transformers/es6/destructuring.js
+++ b/packages/babel/src/transformation/transformers/es6/destructuring.js
@@ -460,8 +460,8 @@ class DestructuringTransformer {
     // member expression then we need to assign it to a temporary variable so it's
     // only evaluated once
 
-    if (pattern.properties.length > 1 && t.isMemberExpression(objRef)) {
-      var temp = this.scope.generateUidIdentifierBasedOnNode(objRef, this.file);
+    if (pattern.properties.length > 1 && !this.scope.isStatic(objRef)) {
+      var temp = this.scope.generateUidIdentifierBasedOnNode(objRef);
       this.nodes.push(this.buildVariableDeclaration(temp, objRef));
       objRef = temp;
     }
diff --git a/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/actual.js b/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/actual.js
index 27a221c473..f9b39d97af 100644
--- a/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/actual.js
+++ b/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/actual.js
@@ -1,2 +1,3 @@
 var rect = {};
 var {topLeft: {x: x1, y: y1}, bottomRight: {x: x2, y: y2}} = rect;
+var { 3: foo, 5: bar } = [0, 1, 2, 3, 4, 5, 6];
diff --git a/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/expected.js b/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/expected.js
index 9d8636356f..34f7843a0a 100644
--- a/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/expected.js
+++ b/packages/babel/test/fixtures/transformation/es6.destructuring/object-advanced/expected.js
@@ -7,3 +7,6 @@ var y1 = _rect$topLeft.y;
 var _rect$bottomRight = rect.bottomRight;
 var x2 = _rect$bottomRight.x;
 var y2 = _rect$bottomRight.y;
+var _ref = [0, 1, 2, 3, 4, 5, 6];
+var foo = _ref[3];
+var bar = _ref[5];