From 3ff2a628925c8324e05f2131ebe0af204b3d5766 Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Sun, 30 Nov 2014 09:11:18 -0800
Subject: [PATCH] Allow assignment expressions as destructuring assignment
 target

---
 src/compiler/checker.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index c60abea743c..3d40bb6ec3f 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -6441,6 +6441,10 @@ module ts {
         }
 
         function checkDestructuringAssignment(target: Expression, sourceType: Type, contextualMapper?: TypeMapper): Type {
+            if (target.kind === SyntaxKind.BinaryExpression && (<BinaryExpression>target).operator === SyntaxKind.EqualsToken) {
+                checkBinaryExpression(<BinaryExpression>target, contextualMapper);
+                target = (<BinaryExpression>target).left;
+            }
             if (target.kind === SyntaxKind.ObjectLiteral) {
                 return checkObjectLiteralAssignment(<ObjectLiteral>target, sourceType, contextualMapper);
             }