flutter - 错误 : The non-abstract class is missing implementations for these members: HttpClientRequest. 中止

Question

将 Flutter 更新为 后大师 channel ，之前编译的代码片段开始无法构建，并出现以下错误:

../pub.dartlang.org/testfairy-1.x.y/lib/src/network_logging.dart:253:7: 
            Error: The non-abstract class '_TestFairyClientHttpRequest' is missing implementations for these members:
     - HttpClientRequest.abort
    Try to either
     - provide an implementation,
     - inherit an implementation from a superclass or mixin,
     - mark the class as abstract, or
     - provide a 'noSuchMethod' implementation.
    class _TestFairyClientHttpRequest implements HttpClientRequest {
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    org-dartlang-sdk:///third_party/dart/sdk/lib/_http/http.dart:2045:8: Context: 'HttpClientRequest.abort' is defined here.
      void abort([Object? exception, StackTrace? stackTrace]);
           ^^^^^

Answer 1

由于新安装现在依赖于未发布的代码，Dart 和 Flutter SDK 中的一些类现在可能添加了新方法，这些方法可能正在试验新的 API。解决方案是定位每个缺失/错误的方法，并通过在 Flutter's 中定位它们的祖先来修复它们的签名。或 Dart's repo ，使用主分支。
对于问题中的特定情况，解决方案是将以下实现添加到故障类，引用自 base implementation :

@Since("2.10")
@override
void abort([Object? exception, StackTrace? stackTrace]) {
    // your implementation
}