text: /**
   * Copyright (c) Meta Platforms, Inc. and affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  
  // RUN: (! %hermes %s -dump-ast 2>&1 ) | %FileCheck %s
  
  ({
    x(): number {}
  })
  
  // CHECK: {{.*}}:11:6: error: '{' expected in method definition
  // CHECK-NEXT:   x(): number {}
  // CHECK-NEXT:   ~~~^
  