From 422a405c016787a582d43baf12936346004ea496 Mon Sep 17 00:00:00 2001
From: Daniel Rosenwasser <drosen@microsoft.com>
Date: Wed, 1 Jul 2015 13:34:59 -0700
Subject: [PATCH] Documentative and conservative checking.

---
 src/services/services.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/services/services.ts b/src/services/services.ts
index 798370bd7ba..516ae1bbaed 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -3024,13 +3024,16 @@ namespace ts {
                         typeForObject = typeChecker.getContextualType(<ObjectLiteralExpression>objectLikeContainer);
                         existingMembers = (<ObjectLiteralExpression>objectLikeContainer).properties;
                     }
-                    else {
+                    else if (objectLikeContainer.kind === SyntaxKind.ObjectBindingPattern) {
                         // We are *only* completing on properties from the type being destructured.
                         isNewIdentifierLocation = false;
 
                         typeForObject = typeChecker.getTypeAtLocation(objectLikeContainer);
                         existingMembers = (<BindingPattern>objectLikeContainer).elements;
                     }
+                    else {
+                        Debug.fail("Expected object literal or binding pattern, got " + objectLikeContainer.kind);
+                    }
 
                     if (!typeForObject) {
                         return false;