fix corner case in collapse_vars (#4445)

fixes #4444
2020-12-24 02:56:22 +00:00
parent 6988cd9558
commit 5f269cd573
3 changed files with 36 additions and 4 deletions
--- a/test/compress/default-values.js
+++ b/test/compress/default-values.js
@@ -950,3 +950,27 @@ mangle_arrow_2_toplevel: {
    expect_stdout: "PASS"
    node_version: ">=6"
 }
+
+issue_4444: {
+    options = {
+        collapse_vars: true,
+    }
+    input: {
+        var a = "PASS";
+        console.log(function(b) {
+            b = a;
+            (function(c = b.p) {})();
+            return a;
+        }());
+    }
+    expect: {
+        var a = "PASS";
+        console.log(function(b) {
+            b = a;
+            (function(c = b.p) {})();
+            return a;
+        }());
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}