fix corner case in if_return (#5755)

fixes #5754
2022-12-02 05:05:36 +02:00
parent 650e63c8aa
commit 404794f5db
2 changed files with 42 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -3759,7 +3759,10 @@ Compressor.prototype.compress = function(node) {
                    if (!in_lambda) return false;
                    if (!(ab instanceof AST_Return)) return false;
                    var value = ab.value;
-                    if (value && !is_undefined(value.tail_node())) return false;
+                    if (value) {
+                        if (!drop_return_void) return false;
+                        if (!is_undefined(value.tail_node())) return false;
+                    }
                    if (!(self instanceof AST_SwitchBranch)) return true;
                    if (!jump) return false;
                    if (jump instanceof AST_Exit && jump.value) return false;