extend collapse_vars to let and const (#2252)

fixes #2250
2017-07-25 22:07:21 +08:00
parent 69861824b5
commit d3df2f985d
4 changed files with 71 additions and 2 deletions
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -116,7 +116,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
    var tw = new TreeWalker(function(node, descend){
        if (node.is_block_scope()) {
            var save_scope = scope;
-            scope = new AST_Scope(node);
+            node.block_scope = scope = new AST_Scope(node);
            scope.init_scope_vars(save_scope);
            if (!(node instanceof AST_Scope)) {
                scope.uses_with = save_scope.uses_with;