fix corner case in rests (#5109)

fixes #5108
2021-08-09 01:59:33 +01:00
parent fdcc6d3a9c
commit c09f63aefb
2 changed files with 26 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -12313,8 +12313,10 @@ merge(Compressor.prototype, {

    OPT(AST_DestructuredArray, function(self, compressor) {
        if (compressor.option("rests") && self.rest instanceof AST_DestructuredArray) {
-            self.elements = self.elements.concat(self.rest.elements);
-            self.rest = self.rest.rest;
+            return make_node(AST_DestructuredArray, self, {
+                elements: self.elements.concat(self.rest.elements),
+                rest: self.rest.rest,
+            });
        }
        return self;
    });