fix corner case in collapse_vars (#4391)

fixes #4390
2020-12-17 19:10:16 +00:00
parent 02fdcfde01
commit ab82be82b2
2 changed files with 32 additions and 1 deletions
--- a/test/compress/arrows.js
+++ b/test/compress/arrows.js
@@ -351,3 +351,32 @@ issue_4388: {
    expect_stdout: "undefined"
    node_version: ">=4"
 }
+
+issue_4390: {
+    options = {
+        collapse_vars: true,
+    }
+    input: {
+        function log() {
+            console.log.apply(console, arguments);
+        }
+        var a = 42, b = "FAIL";
+        b = "PASS";
+        (c => log(b, c))(a);
+        log(b);
+    }
+    expect: {
+        function log() {
+            console.log.apply(console, arguments);
+        }
+        var a = 42, b = "FAIL";
+        b = "PASS";
+        (c => log(b, c))(a);
+        log(b);
+    }
+    expect_stdout: [
+        "PASS 42",
+        "PASS",
+    ]
+    node_version: ">=4"
+}