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/lib/compress.js
+++ b/lib/compress.js
@@ -1776,7 +1776,9 @@ merge(Compressor.prototype, {
                    can_replace = false;
                    var after = stop_after;
                    var if_hit = stop_if_hit;
-                    for (var i = 0; !abort && i < fn.body.length; i++) {
+                    if (fn instanceof AST_Arrow && fn.value) {
+                        fn.value.transform(scanner);
+                    } else for (var i = 0; !abort && i < fn.body.length; i++) {
                        var stat = fn.body[i];
                        if (stat instanceof AST_Return) {
                            if (stat.value) stat.value.transform(scanner);