// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. /// No "===" operator. class C { operator ===(int index) { // ^ // [analyzer] SYNTACTIC_ERROR.UNSUPPORTED_OPERATOR // [cfe] The '===' operator is not supported. return index; } } main() { C(); }