From dac00d97b742c81b1e31ac1880b3d71e4a2a0b37 Mon Sep 17 00:00:00 2001
From: Daniel Rosenwasser <Daniel.Rosenwasser@microsoft.com>
Date: Wed, 15 Aug 2018 09:00:23 -0700
Subject: [PATCH] Do it correctly.

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

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 46c7481692..7b059833be 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -15473,7 +15473,7 @@ namespace ts {
                 // With noImplicitThis, functions may not reference 'this' if it has type 'any'
                 error(
                     node,
-                    capturedByArrowFunction ?
+                    capturedByArrowFunction && container.kind === SyntaxKind.SourceFile ?
                         Diagnostics.The_containing_arrow_function_captures_the_global_value_of_this_which_implicitly_has_type_any :
                         Diagnostics.this_implicitly_has_type_any_because_it_does_not_have_a_type_annotation);
             }