fix corner case in reduce_vars (#5047)

fixes #5046
2021-07-04 06:45:09 +01:00
parent 972b9f0bef
commit f4ae267920
2 changed files with 32 additions and 7 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1000,11 +1000,7 @@ merge(Compressor.prototype, {
                    arg.walk(tw);
                    if (arg instanceof AST_Spread) iife = false;
                });
-                if (iife) {
-                    exp.reduce_vars = reduce_iife;
-                } else {
-                    exp.safe_ids = tw.safe_ids;
-                }
+                if (iife) exp.reduce_vars = reduce_iife;
                exp.walk(tw);
                if (iife) delete exp.reduce_vars;
                return true;
@@ -1299,9 +1295,7 @@ merge(Compressor.prototype, {
                node.expressions.forEach(function(exp) {
                    exp.walk(tw);
                });
-                tag.safe_ids = tw.safe_ids;
                tag.walk(tw);
-                delete tag.reduce_vars;
                return true;
            }
            tag.walk(tw);