fix corner case in collapse_vars (#4309)

fixes #4308
2020-11-19 22:23:37 +00:00
parent b18b70f63b
commit 1b579779be
2 changed files with 30 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1825,7 +1825,11 @@ merge(Compressor.prototype, {
                            name: sym,
                            value: arg
                        }));
-                        if (sym instanceof AST_Destructured) continue;
+                        if (sym instanceof AST_Destructured) {
+                            if (!sym.match_symbol(return_false)) continue;
+                            candidates.length = 0;
+                            break;
+                        }
                        if (sym.name in names) continue;
                        names[sym.name] = true;
                        if (!arg) {