From 46837fd77d23569cd425f3b10f59e7c4237bf5d6 Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Wed, 17 Feb 2016 19:03:56 -0800
Subject: [PATCH] Disallow line breaks between operand and '!' non-null
 assertion operator

---
 src/compiler/parser.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 25b95536947..f3a9e5cbf85 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -3728,7 +3728,8 @@ namespace ts {
                     continue;
                 }
 
-                if (parseOptional(SyntaxKind.ExclamationToken)) {
+                if (token === SyntaxKind.ExclamationToken && !scanner.hasPrecedingLineBreak()) {
+                    nextToken();
                     const nonNullExpression = <NonNullExpression>createNode(SyntaxKind.NonNullExpression, expression.pos);
                     nonNullExpression.expression = expression;
                     expression = finishNode(nonNullExpression);