1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/identifiers/start-zwj-escaped.js b/js/src/tests/test262/language/identifiers/start-zwj-escaped.js
new file mode 100644
index 0000000000..3f7cf89c5a
--- /dev/null
+++ b/js/src/tests/test262/language/identifiers/start-zwj-escaped.js
@@ -0,0 +1,16 @@
+// |reftest| error:SyntaxError
+// Copyright (C) 2020 Adam Kluball. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Adam Kluball
+esid: sec-names-and-keywords
+description: zero width joiner is not a valid identifier start
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+var \u200D;