From 711f88dcb49bc0daf0548f3ec240f680e05dfc27 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Wed, 8 Mar 2017 18:37:32 +0800
Subject: scan assignment value in drop_unused() (#1578)

those were not optimised for `unused` before, which made it necessary for `reduce_vars` to have separate steps for `keep_fnames`

docs update by @kzc

closes #1577
---
 test/compress/drop-unused.js | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'test/compress/drop-unused.js')

diff --git a/test/compress/drop-unused.js b/test/compress/drop-unused.js
index 20dab3b9..9c960561 100644
--- a/test/compress/drop-unused.js
+++ b/test/compress/drop-unused.js
@@ -700,3 +700,28 @@ issue_1539: {
         }
     }
 }
+
+vardef_value: {
+    options = {
+        keep_fnames: false,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        function f() {
+            function g(){
+                return x();
+            }
+            var a = g();
+            return a(42);
+        }
+    }
+    expect: {
+        function f() {
+            var a = function(){
+                return x();
+            }();
+            return a(42);
+        }
+    }
+}
-- 
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