1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/optional-chaining/punctuator-decimal-lookahead.js b/js/src/tests/test262/language/optional-chaining/punctuator-decimal-lookahead.js
new file mode 100644
index 0000000000..ec64f9201e
--- /dev/null
+++ b/js/src/tests/test262/language/optional-chaining/punctuator-decimal-lookahead.js
@@ -0,0 +1,17 @@
+// Copyright 2019 Google, Inc.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: prod-OptionalExpression
+description: >
+  ternary operation with decimal does not evaluate as optional chain 
+info: |
+  Punctuators
+    OptionalChainingPunctuator::
+      ?.[lookahead ∉ DecimalDigit]
+features: [optional-chaining]
+---*/
+
+const value = true ?.30 : false;
+assert.sameValue(.30, value);
+
+reportCompare(0, 0);