fix corner cases with arguments (#4481)

fixes #4480
2020-12-29 16:22:03 +00:00
parent 560ccc1221
commit 1956edd503
5 changed files with 56 additions and 59 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -357,10 +357,7 @@ merge(Compressor.prototype, {
    }

    function is_arguments(def) {
-        if (def.name != "arguments") return false;
-        if (!def.scope.uses_arguments) return false;
-        var orig = def.orig;
-        return orig.length == 1 && orig[0] instanceof AST_SymbolFunarg;
+        return def.name == "arguments" && def.scope.uses_arguments;
    }

    function is_funarg(def) {