flutter pub run build_runner build 时出错

Question

我在运行 flutter pub run build_runner build 时遇到了这个问题。我尝试过类似 flutter clean、flutter pub-cache repair、flutter pub get 等解决方案。在 pubspec 上添加了 Mockito、HTTP 和 build_runner 等依赖项，flutter pub get 也成功运行。

Failed to precompile build_runner:build_runner:
../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-1.6.0/lib/src/error/best_practices_verifier.dart:1600:40: Error: Getter not found: 'topLevelVariable'.
      return kinds.contains(TargetKind.topLevelVariable);
                                       ^^^^^^^^^^^^^^^^
../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-1.6.0/lib/src/error/best_practices_verifier.dart:2024:23: Error: Getter not found: 'topLevelVariable'.
      case TargetKind.topLevelVariable:
                      ^^^^^^^^^^^^^^^^
../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-1.6.0/lib/src/error/best_practices_verifier.dart:2024:23: Error: Type 'dynamic' of the case expression is not a subtype of type 'TargetKind' of this switch expression.
 - 'TargetKind' is from 'package:meta/meta_meta.dart' ('../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/meta-1.3.0/lib/meta_meta.dart').
      case TargetKind.topLevelVariable:
                      ^
../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-1.6.0/lib/src/error/best_practices_verifier.dart:2001:13: Context: The switch expression is here.
    switch (this) {
            ^
pub finished with exit code 1

Answer 1

在 pubspec yaml 的 dev-dependencies 中添加分析器https://pub.dev/packages/analyzer dependency 1.5.0 对我有用

 dev_dependencies:
   analyzer: 1.5.0

Answer 2

如此处所述：https: //github.com/dart-lang/sdk/issues/46136#issuecomment-848910733，您应该能够flutter pub upgrade在不指定任何analyzer版本的情况下运行，并且它会起作用！