fix corner case with destructuring catch (#4421)

fixes #4420
2020-12-19 21:47:01 +00:00
parent 2c9c72e06c
commit 87cf715213
3 changed files with 55 additions and 0 deletions
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -208,6 +208,14 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options) {
    self.globals = new Dictionary();
    var in_arg = [];
    var tw = new TreeWalker(function(node) {
+        if (node instanceof AST_Catch) {
+            if (!(node.argname instanceof AST_Destructured)) return;
+            in_arg.push(node);
+            node.argname.walk(tw);
+            in_arg.pop();
+            walk_body(node, tw);
+            return true;
+        }
        if (node instanceof AST_Lambda) {
            in_arg.push(node);
            node.argnames.forEach(function(argname) {