fix corner case in arguments (#5007)

fixes #5006
2021-06-15 05:53:22 +01:00
parent 498ac83541
commit ac1262dc97
2 changed files with 25 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -11717,7 +11717,11 @@ merge(Compressor.prototype, {
                } else if (compressor.has_directive("use strict")
                    || fn.name
                    || fn.rest
-                    || !(fn_parent instanceof AST_Call && index < fn_parent.args.length)
+                    || !(fn_parent instanceof AST_Call
+                        && index < fn_parent.args.length
+                        && all(fn_parent.args.slice(0, index + 1), function(arg) {
+                            return !(arg instanceof AST_Spread);
+                        }))
                    || !all(fn.argnames, function(argname) {
                        return argname instanceof AST_SymbolFunarg;
                    })) {