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// Copyright (c) 2017, 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 Future<T> first
/// read-only
/// @description Checks that [first] is read only
/// @author
import "../../../Utils/expect.dart";
import "dart:io";
main() {
dynamic sin = stdin;
Expect.throws(() { sin.first = 1; }, (e) => e is NoSuchMethodError);