From 6a5de5d00ee092322a1cb6d68809c37366090ee4 Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Thu, 3 Nov 2016 10:55:58 -0700
Subject: [PATCH] Fix linting errors

---
 src/compiler/checker.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index b47f6264e3e..28b14502af9 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -6828,7 +6828,7 @@ namespace ts {
                 if (target.flags & TypeFlags.TypeParameter) {
                     // Given a type parameter K with a constraint keyof T, a type S is
                     // assignable to K if S is assignable to keyof T.
-                    let constraint = getConstraintOfTypeParameter(<TypeParameter>target);
+                    const constraint = getConstraintOfTypeParameter(<TypeParameter>target);
                     if (constraint && constraint.flags & TypeFlags.Index) {
                         if (result = isRelatedTo(source, constraint, reportErrors)) {
                             return result;
@@ -6838,7 +6838,7 @@ namespace ts {
                 else if (target.flags & TypeFlags.Index) {
                     // Given a type parameter T with a constraint C, a type S is assignable to
                     // keyof T if S is assignable to keyof C.
-                    let constraint = getConstraintOfTypeParameter((<IndexType>target).type);
+                    const constraint = getConstraintOfTypeParameter((<IndexType>target).type);
                     if (constraint) {
                         if (result = isRelatedTo(source, getIndexType(constraint), reportErrors)) {
                             return result;