Question

一旦我创建了BrowserClient的实例，我就会在浏览器控制台中看到一个堆栈跟踪，然后应用程序就会死掉。

    import 'package:http/browser_client.dart';
    ...
    var client = new BrowserClient()
        ..withCredentials = true;

Stacktrace和http / src / utils.dart中的相关代码：

＆＃39;包：http / src / utils.dart＆＃39;：错误：第89行pos 1：意外令牌＆＃39;流＆＃39; Stream onDone（Stream stream，void onDone（））=＆gt; ^：包：HTTP / SRC / utils.dart

/// Calls [onDone] once [stream] (a single-subscription [Stream]) is finished.
    /// The return value, also a single-subscription [Stream] should be used in
    /// place of [stream] after calling this method.
    Stream/*<T>*/ onDone/*<T>*/(Stream/*<T>*/ stream, void onDone()) =>
        stream.transform(new StreamTransformer.fromHandlers(handleDone: (sink) {
          sink.close();
          onDone();
        }));

如果我只导入它，异常看起来不同 - stacktrace和async / src / byte_collector.dart中的相关代码

＆＃39;包：async / src / byte_collector.dart＆＃39;：错误：第42行pos 1：意外的令牌＆＃39; T＆＃39; T _collectBytes（^：包：异步/ SRC / byte_collector.dart

T _collectBytes<T>(
    Stream<List<int>> source,
    T result(StreamSubscription<List<int>> subscription,
        Future<Uint8List> result)) {

关于最新版本的浏览器和http依赖项

browser: "^0.10.0+2"
http: "^0.11.3+13"

我需要注意的BrowserClient有什么变化吗？这段代码过去两年来一直很好用。

我已尝试使用Dart版本1.22.1和1.23.0，我确保Dartium是最新的并且符合Dart版本。 pub build也没有显示任何错误。

实际上，仅仅导入import 'package:http/browser_client.dart';会导致堆栈跟踪无论是否被使用。

如果有帮助，请填写pubspec.yaml：

...
environment:
  sdk: '>=1.13.0 <2.0.0'
dependencies:
  angular2: "^2.2.0"
  bootjack: "0.6.7+2"
  browser: "^0.10.0+2"
  event_bus: "^0.4.1"
  less_dart: any
  http: "^0.11.3+13"
  dart_to_js_script_rewriter: "^1.0.2"
transformers:
- angular2:
    platform_directives:
    - package:angular2/common.dart#COMMON_DIRECTIVES
    platform_pipes:
    - package:angular2/common.dart#COMMON_PIPES
    entry_points: web/main.dart
- dart_to_js_script_rewriter
- $dart2js:
    commandLineOptions: [--enable-experimental-mirrors]
- less_dart:
    entry_points: [web/css/main.less]
    build_mode: dart

降级http也无济于事。我已完成pub cache repair，我已删除pubspec.lock文件并重新运行pub get，只要我导入/使用BrowserClient，错误就会一直存在}

==================

测试应用程序以重现问题：

==================

lib/components/bug-fix.dart

import 'package:angular2/angular2.dart';
import 'package:angular2/core.dart' show AfterContentInit, Component;
import 'package:angular2/router.dart'
    show ROUTER_DIRECTIVES, Route, RouteConfig;

// uncomment this line to make it crash
// import 'package:http/browser_client.dart';


@Component(
    selector: 'bug-fix',
    template: 'test',
    providers: const [],
    directives: const [ROUTER_DIRECTIVES]
)
@RouteConfig(const [

])
class AppComponent {



}

web/index.html

<!DOCTYPE html>
<html>
<head>
    <!--<base href="/">-->
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="developed-by" content="jVaaS (Pty) Ltd">
    <title>BugFix APP</title>
    <link rel="shortcut icon" href="favicon.ico" type="image/x-icon">
    <link rel="icon" href="favicon.ico" type="image/x-icon">
    <!--<link rel="stylesheet" href="css/main.css?4">-->
    <!--<script src="cordova.js"></script>-->
</head>
<body >
<bug-fix class="noselect">

</bug-fix>
<script async src="main.dart" type="application/dart"></script>
<script async src="packages/browser/dart.js"></script>

</body>


</html>

web/main.dart

import 'package:angular2/angular2.dart' show provide;
import 'package:angular2/platform/browser.dart';
import 'package:angular2/router.dart' show ROUTER_PROVIDERS;
import 'package:angular2/src/platform/browser/location/hash_location_strategy.dart';
import 'package:angular2/src/platform/browser/location/location_strategy.dart';
import 'package:bugfix/components/bug-fix.dart';

void main() {
    // bootstrap angular2
    bootstrap(AppComponent, [
        ROUTER_PROVIDERS,
        provide(APP_BASE_HREF, useValue: '/'),
        provide(LocationStrategy, useClass: HashLocationStrategy)
    ]);
}

pubspec.yaml

name: bugfix
version: 2.0.0
description: BugFix
environment:
  sdk: '>=1.13.0 <2.0.0'
dependencies:
  angular2: "^2.2.0"
  bootjack: "0.6.7+2"
  browser: "^0.10.0+2"
  event_bus: "^0.4.1"
  less_dart: any
  http: "^0.11.3+13"
  dart_to_js_script_rewriter: "^1.0.2"
transformers:
- angular2:
    platform_directives:
    - package:angular2/common.dart#COMMON_DIRECTIVES
    platform_pipes:
    - package:angular2/common.dart#COMMON_PIPES
    entry_points: web/main.dart
- dart_to_js_script_rewriter
- $dart2js:
    commandLineOptions: [--enable-experimental-mirrors]
- less_dart:
    entry_points: [web/css/main.less]
    build_mode: dart

==================

上面的代码实际上是＆＃34; Bugfix＆＃34;中的唯一代码。应用。我做pub get后跟pub serve --port=8888。一旦取消注释browser_client导入，它就会因上述堆栈跟踪而死亡。

Answer 1

创建了一个最小的回购并要求妻子在她的机器上进行测试（https://github.com/janvladimirmostert/angular-dart-browser-client）并且它对她来说工作正常。

删除飞镖和镖的所有痕迹，并在我的机器上重新安装飞镖，为我修好。

很奇怪： - |

Dart BrowserClient在导入

1 个答案: