dart2js js代碼`undefined不是一個函數`

Question

我想在JavaScript中編譯我的項目。

編纂工作，但在瀏覽器（Chrome），我有：

Uncaught TypeError: undefined is not a function client.dart.js:14753 
J.get$length$asx client.dart.js:14753 
InputStream.InputStream$4$byteOrder$length$start input_stream.dart:19 
InputStream.static.InputStream$ input_stream.dart:17 
DartAgnanAsk__get_data_closure.call$1 bzip2_decoder.dart:9 
invokeClosure_closure0.call$0 js_helper.dart:1822 
_IsolateContext.eval$1 isolate_helper.dart:355 
_callInIsolate isolate_helper.dart:30 
invokeClosure js_helper.dart:1822 
(anonymous function) 

編譯我使用這個命令：

dart2js -v --out=client.dart.js main.dart

而且dart2js -v --analyze-all --out=client.dart.js main.dart得出：

Info: Option '--analyze-all' implies '--analyze-only'. 
Info: Options [--out=client.dart.js] indicate that output is expected, but compilation is turned off by the option '--analyze-only'. 
Info: Package root is file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Documents/GitHub/DartAgnan/web/dart/packages/ 
Info: Allowed library categories: {Client, Shared, Internal} 
Info: Scanning library dart:_js_helper (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/_internal/lib/js_helper.dart) 
Info: Scanning library dart:core (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/core/core.dart) 
Info: Scanning library dart:_internal (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/internal/internal.dart) 
Info: Scanning library dart:_js_primitives (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/_internal/lib/js_primitives.dart) 
Info: Scanning library dart:_foreign_helper (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/_internal/lib/foreign_helper.dart) 
Info: Scanning library dart:_interceptors (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/_internal/lib/interceptors.dart) 
Info: Scanning library dart:collection (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/collection/collection.dart) 
Info: Scanning library dart:math (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/math/math.dart) 
Info: Scanning library dart:convert (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/convert/convert.dart) 
Info: Scanning library dart:async (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/async/async.dart) 
Info: Scanning library dart:_isolate_helper (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/_internal/lib/isolate_helper.dart) 
Info: Scanning library dart:isolate (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/isolate/isolate.dart) 
Info: Scanning library dart:_js_names (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/_internal/lib/js_names.dart) 
Info: Analyzing file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Documents/GitHub/DartAgnan/web/dart/main.dart (1.3.6) 
Info: Scanning library file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Documents/GitHub/DartAgnan/web/dart/main.dart 
Info: Scanning library package:route_hierarchical/client.dart 
Info: Scanning library dart:html (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/html/dart2js/html_dart2js.dart) 
Info: Scanning library dart:html_common (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/html/html_common/html_common_dart2js.dart) 
Info: Scanning library dart:web_gl (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/web_gl/dart2js/web_gl_dart2js.dart) 
Info: Scanning library dart:_native_typed_data (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/typed_data/dart2js/native_typed_data_dart2js.dart) 
Info: Scanning library dart:typed_data (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/typed_data/dart2js/typed_data_dart2js.dart) 
Info: Scanning library file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/html/html_common/metadata.dart 
Info: Scanning library dart:indexed_db (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart) 
Info: Scanning library dart:svg (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/svg/dart2js/svg_dart2js.dart) 
Info: Scanning library dart:web_audio (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/web_audio/dart2js/web_audio_dart2js.dart) 
Info: Scanning library dart:web_sql (file:///Volumes/Data/nfs/zfs-student-4/users/2013/tcaron/Dart/Dart tools/dart/dart-sdk/lib/web_sql/dart2js/web_sql_dart2js.dart) 
Info: Scanning library package:logging/logging.dart 
Info: Scanning library package:collection/wrappers.dart 
Info: Scanning library package:route_hierarchical/src/utils.dart 
Info: Scanning library package:route_hierarchical/link_matcher.dart 
Info: Scanning library package:route_hierarchical/click_handler.dart 
Info: Scanning library package:route_hierarchical/url_matcher.dart 
Info: Scanning library package:route_hierarchical/url_template.dart 
Info: Scanning library package:DartAgnan/module/initMod.dart 
Info: Scanning library package:DartAgnan/module/home/controller/homeCtrl.dart 
Info: Scanning library package:DartAgnan/module/ask/controller/DartAgnanAsk.dart 
Info: Scanning library package:archive/archive.dart 
Info: Scanning library package:crypto/crypto.dart 
Info: Resolving... 
Info: Resolved 1495 elements. 
Info: Resolved 4746 elements. 
Info: Preserving names. 
Info: Resolved 14467 elements. 
Info: Resolved 50 native elements used, 531 native elements dead. 
Hint: 1 warning(s) suppressed in package:route_hierarchical. 
Info: LibraryLoader took 63msec 
Info: Scanner took 195msec 
Info: Diet Parser took 115msec 
Info: Parser took 607msec 
Info: Patching Parser took 16msec 
Info: Resolver took 2402msec 
Info: Closure Simplifier took 0msec 
Info: Type checker took 346msec 
Info: IR builder took 0msec 
Info: Type inference took 0msec 
Info: ConstantHandler took 393msec 
Info: Deferred Loading took 0msec 
Info: Unknown task took 0msec 
Info: Enqueue took 283msec 
Info: Dump Info took 0msec 
Info: SSA builder took 0msec 
Info: SSA optimizer took 0msec 
Info: SSA code generator took 0msec 
Info: CodeEmitter took 0msec 
Info: Total compile-time 4978msec; unaccounted 558msec 

當我使用pub build --mode=debug：

Loading source assets... 
Building DartAgnan... 
[Info from Dart2JS]: 
Compiling DartAgnan|web/dart/main.dart... 
[Dart2JS on DartAgnan|web/dart/main.dart]: 
1 warning(s) suppressed in package:route_hierarchical. 
[Info from Dart2JS]: 
Took 0:00:10.001875 to compile DartAgnan|web/dart/main.dart. 
Built 514 files to "build". 

你看到哪裏是我的錯？或者有更明確的調試命令？ 謝謝。

Answer 1

我用這些服務器端：

_ws.binaryType = 'arraybyte'; 
... 
_ws.onMessage.listen((MessageEvent data) { 
      var response = JSON.decode(new String.fromCharCodes(new BZip2Decoder().decodeBytes(data.data))); 
      _sender_list[response['ws_id']].add(response); 
      if (response['status'] != 1) { 
       _sender_list[response['ws_id']].close(); 
      } 
} 

沒有編譯成JS運作良好。通過編譯，我們得到了指出的錯誤。

該解決方案是直接使用Blob。

//_ws.binaryType = 'arraybyte'; 
... 
_ws.onMessage.listen((MessageEvent data) { 
    FileReader reader = new FileReader(); 

    reader.onLoadEnd.listen((ProgressEvent event) { 
    var response = JSON.decode(new String.fromCharCodes(new BZip2Decoder().decodeBytes(reader.result))); 
     _sender_list[response['ws_id']].add(response); 
      if (response['status'] != 1) { 
      _sender_list[response['ws_id']].close(); 
     } 
    }); 
    reader.readAsArrayBuffer(data.data); 
}); 

現在，彙編運作良好。