| // Copyright (c) 2015, 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. |
| |
| // @dart = 2.7 |
| |
| /// Regression for #24135: inference was not tracking `[]??=` correctly. |
| library dart2js_2.if_null3_test; |
| |
| import "package:expect/expect.dart"; |
| |
| void main() { |
| var map; |
| (((map ??= {})['key1'] ??= {})['key2'] ??= {})['key3'] = 'value'; |
| Expect.equals('{key1: {key2: {key3: value}}}', '$map'); |
| } |