fix corner cases in ie8 (#3485)

fixes #3484
2019-10-16 06:37:40 +08:00
parent 91cae51d8f
commit 8ff9a3c8fb
3 changed files with 172 additions and 3 deletions
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -202,7 +202,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options) {
        if (node instanceof AST_SymbolLambda) {
            var def = node.thedef;
            redefine(node, node.scope.parent_scope.resolve());
-            node.thedef.init = def.init;
+            if (def.init) node.thedef.init = def.init;
            return true;
        }
    }));