From e14fe5b8303e10554f9852891892f19baebf53c3 Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Tue, 28 Jun 2016 17:12:46 -0700
Subject: [PATCH] Remove unused functions

---
 src/compiler/binder.ts | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/src/compiler/binder.ts b/src/compiler/binder.ts
index 27bd3b71c5e..69147d2da68 100644
--- a/src/compiler/binder.ts
+++ b/src/compiler/binder.ts
@@ -617,18 +617,10 @@ namespace ts {
             return false;
         }
 
-        function isNarrowingNullCheckOperands(expr1: Expression, expr2: Expression) {
-            return (expr1.kind === SyntaxKind.NullKeyword || expr1.kind === SyntaxKind.Identifier && (<Identifier>expr1).text === "undefined") && isNarrowableOperand(expr2);
-        }
-
         function isNarrowingTypeofOperands(expr1: Expression, expr2: Expression) {
             return expr1.kind === SyntaxKind.TypeOfExpression && isNarrowableOperand((<TypeOfExpression>expr1).expression) && expr2.kind === SyntaxKind.StringLiteral;
         }
 
-        function isNarrowingDiscriminant(expr: Expression) {
-            return expr.kind === SyntaxKind.PropertyAccessExpression && isNarrowableReference((<PropertyAccessExpression>expr).expression);
-        }
-
         function isNarrowingBinaryExpression(expr: BinaryExpression) {
             switch (expr.operatorToken.kind) {
                 case SyntaxKind.EqualsToken: