fix corner case in merge_vars (#4407)

fixes #4406
2020-12-18 16:52:37 +00:00
parent 2415a72e75
commit 44e494f16f
2 changed files with 31 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4801,7 +4801,7 @@ merge(Compressor.prototype, {
            if (node instanceof AST_Call) {
                var exp = node.expression;
                var tail = exp.tail_node();
-                if (!(tail instanceof AST_Function)) return;
+                if (!is_function(tail)) return;
                if (exp !== tail) exp.expressions.slice(0, -1).forEach(function(node) {
                    node.walk(tw);
                });