| /* |
| * 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. |
| */ |
| /** |
| * @assertion From the Unified collection Spec: |
| * A [spreadElement] starting with [...?] is a constant element if its |
| * expression is constant and it evaluates to [null] or a constant [List], [Set] |
| * or [Map] instance originally created by a list, set or map literal. It is a |
| * potentially constant element if the expression is potentially constant |
| * expression. |
| * @description: Checks some disambiguilty cases for sets and maps. |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| |
| const l = []; |
| const s = {11}; |
| const m = {1: 1}; |
| |
| main() { |
| const res1 = {...?l}; |
| const res2 = {1, ...?l, 2}; |
| const res3 = {...?s}; |
| const res4 = {1, ...?s, 2}; |
| const res5 = {...?m}; |
| const res6 = {2: 1, ...?m, 3: 14}; |
| |
| } |
