From 0d3f2166e32f9e7260d307b49002962fc2245091 Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Mon, 5 Feb 2018 13:56:10 -0800
Subject: [PATCH] Automatic semicolon insertion before 'extends' in conditional
 type

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

diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 5b8504eb6dc..3209f234f85 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -2986,7 +2986,7 @@ namespace ts {
                 return parseFunctionOrConstructorType(SyntaxKind.ConstructorType);
             }
             const type = parseUnionTypeOrHigher();
-            if (!noConditionalTypes && parseOptional(SyntaxKind.ExtendsKeyword)) {
+            if (!noConditionalTypes && !scanner.hasPrecedingLineBreak() && parseOptional(SyntaxKind.ExtendsKeyword)) {
                 const node = <ConditionalTypeNode>createNode(SyntaxKind.ConditionalType, type.pos);
                 node.checkType = type;
                 // The type following 'extends' is not permitted to be another conditional type