From cc5334eb89812dcc0c180089c84fbf4292a85fe3 Mon Sep 17 00:00:00 2001
From: Daniel Rosenwasser <drosen@microsoft.com>
Date: Fri, 18 Dec 2015 14:06:08 -0800
Subject: [PATCH] Made 'expression' non-optional in 'CaseClause'.

---
 src/compiler/types.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index a8c4ee211c3..24f70373a8a 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -1195,7 +1195,7 @@ namespace ts {
 
     // @kind(SyntaxKind.CaseClause)
     export interface CaseClause extends Node {
-        expression?: Expression;
+        expression: Expression;
         statements: NodeArray<Statement>;
     }