From d5239cdf6ae7d7b9d284bcb2427bac71527f5d84 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E6=96=87=E7=92=90?= <kingwenlu@gmail.com>
Date: Thu, 24 May 2018 18:20:54 +0800
Subject: [PATCH] fix ambient context

---
 src/compiler/checker.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index b138ce9ea70..abcfb35ff88 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -24289,7 +24289,9 @@ namespace ts {
                 checkTypeNameIsReserved(node.name, Diagnostics.Class_name_cannot_be_0);
                 checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
                 checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name);
-                checkClassNameCollisionWithObject(node.name);
+                if (!(node.flags & NodeFlags.Ambient)) {
+                    checkClassNameCollisionWithObject(node.name);
+                }
             }
             checkTypeParameters(getEffectiveTypeParameterDeclarations(node));
             checkTypeParameters(node.typeParameters);