From 44b13ee475cb9dac0a773d6db7593e759cb4156b Mon Sep 17 00:00:00 2001
From: Orta Therox <orta.therox@gmail.com>
Date: Wed, 31 Jul 2019 14:34:21 -0400
Subject: [PATCH] Don't exclusively check for just JS but scope down the check
 to not include the expando'd objects

---
 src/compiler/checker.ts | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 02b6e9913e..c823b066d4 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -29974,9 +29974,8 @@ namespace ts {
             const symbol = getSymbolOfNode(node);
             const target = resolveAlias(symbol);
 
-            const shouldSkipWithJSRequireTargets = !isInJSFile(node) && moduleKind !== ModuleKind.ES2015;
-
-            if (shouldSkipWithJSRequireTargets && target !== unknownSymbol) {
+            const shouldSkipWithJSExpandoTargets = symbol.flags & SymbolFlags.Assignment;
+            if (!shouldSkipWithJSExpandoTargets && target !== unknownSymbol) {
                 // For external modules symbol represents local symbol for an alias.
                 // This local symbol will merge any other local declarations (excluding other aliases)
                 // and symbol.flags will contains combined representation for all merged declaration.