From 95b896b5fefae5ee5b7050f80b857ce742d427be Mon Sep 17 00:00:00 2001
From: Ron Buckton <ron.buckton@microsoft.com>
Date: Fri, 17 Jun 2022 11:20:36 -0700
Subject: [PATCH] Only check overlaps if we found an array/tuple in the
 intersection

---
 src/compiler/checker.ts | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 973d4271e25..09450cac8e8 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -21201,17 +21201,22 @@ namespace ts {
                     }
                     arrayOrTupleConstituent = constituent;
                 }
-                else {
-                    const properties = getPropertiesOfType(constituent);
-                    for (const property of properties) {
-                        if (isNumericLiteralName(property.escapedName) || property.escapedName === "length" as __String) {
+            }
+
+            if (arrayOrTupleConstituent) {
+                for (const constituent of (type as IntersectionType).types) {
+                    if (constituent !== arrayOrTupleConstituent) {
+                        const properties = getPropertiesOfType(constituent);
+                        for (const property of properties) {
+                            if (isNumericLiteralName(property.escapedName) || property.escapedName === "length" as __String) {
+                                return undefined;
+                            }
+                        }
+
+                        if (some(getIndexInfosOfType(constituent))) {
                             return undefined;
                         }
                     }
-
-                    if (some(getIndexInfosOfType(constituent))) {
-                        return undefined;
-                    }
                 }
             }