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912005267d
Change-Id: I46be49b2effec3e38a3dc44cd45cfe736f77fa78 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182680 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Joshua Litt <joshualitt@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com> Reviewed-by: Stephen Adams <sra@google.com>
40 lines
845 B
Dart
40 lines
845 B
Dart
// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.7
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// dart2jsOptions=--strong
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// Regression test for issue 32770.
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import 'dart:async' show Future;
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A<J> futureToA<T, J>(Future<T> future, [J wrapValue(T value)]) {
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return new A<J>(
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(void resolveFn(J value), void rejectFn(error)) {
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future.then((value) {
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dynamic wrapped;
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if (wrapValue != null) {
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wrapped = wrapValue(value);
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} else if (value != null) {
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wrapped = value;
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}
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resolveFn(wrapped);
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}).catchError((error) {
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rejectFn(error);
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});
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},
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);
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}
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class A<X> {
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var x;
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A(this.x);
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}
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main() {
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print(futureToA);
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}
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