From fd6544b34011a30bd869d2447b744fe51d0d741f Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Wed, 18 Nov 2020 17:11:28 +0000
Subject: fix corner case `reduce_vars` (#4300)

fixes #4297
---
 test/compress/destructured.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'test')

diff --git a/test/compress/destructured.js b/test/compress/destructured.js
index cebb70ae..8671d87b 100644
--- a/test/compress/destructured.js
+++ b/test/compress/destructured.js
@@ -1503,6 +1503,25 @@ issue_4294: {
     node_version: ">=6"
 }
 
+issue_4297: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        console.log(typeof function(a) {
+            return { a } = a;
+        }(function() {}));
+    }
+    expect: {
+        console.log(typeof function(a) {
+            return { a } = a;
+        }(function() {}));
+    }
+    expect_stdout: "function"
+    node_version: ">=6"
+}
+
 issue_4298: {
     options = {
         merge_vars: true,
-- 
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