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// Copyright (c) 2013, 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.
part of dart.async;
/// Indicates that loading of [libraryName] is deferred.
/// This class is obsolete. Instead use the syntax:
/// ```dart
/// import "library.dart" deferred as prefix;
/// ```
@Deprecated("Dart sdk v. 1.8")
class DeferredLibrary {
final String libraryName;
final String? uri;
const DeferredLibrary(this.libraryName, {this.uri});
/// Ensure that [libraryName] has been loaded.
/// If the library fails to load, the [Future] will complete with a
/// [DeferredLoadException].
external Future<Null> load();
/// Thrown when a deferred library fails to load.
class DeferredLoadException implements Exception {
DeferredLoadException(String message) : _s = message;
String toString() => "DeferredLoadException: '$_s'";
final String _s;