From 47f6bb2e26a57e53346412c84b65f01029e6ddef Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Mon, 1 Aug 2016 09:49:27 -0700
Subject: [PATCH] Add test

---
 tests/cases/compiler/bestChoiceType.ts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 tests/cases/compiler/bestChoiceType.ts

diff --git a/tests/cases/compiler/bestChoiceType.ts b/tests/cases/compiler/bestChoiceType.ts
new file mode 100644
index 00000000000..3f8ce4bc868
--- /dev/null
+++ b/tests/cases/compiler/bestChoiceType.ts
@@ -0,0 +1,19 @@
+// @strictNullChecks: true
+
+// Repro from #10041
+
+(''.match(/ /) || []).map(s => s.toLowerCase());
+
+// Similar cases
+
+function f1() {
+    let x = ''.match(/ /);
+    let y = x || [];
+    let z = y.map(s => s.toLowerCase());
+}
+
+function f2() {
+    let x = ''.match(/ /);
+    let y = x ? x : [];
+    let z = y.map(s => s.toLowerCase());
+}