fix corner case in reduce_vars (#4582)

fixes #4581
2021-01-22 18:14:53 +00:00
parent c0614654d9
commit f87e7be12c
2 changed files with 22 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -719,7 +719,7 @@ merge(Compressor.prototype, {
            var fn = this;
            fn.inlined = false;
            var iife = tw.parent();
-            var hit = fn instanceof AST_AsyncFunction;
+            var hit = is_async(fn);
            var aborts = false;
            fn.walk(new TreeWalker(function(node) {
                if (hit) return aborts = true;