为什么 build_runner watch 命令不起作用？

Question

我一直在从事这个 flutter 项目，由于各种原因我需要代码生成，例如 Riverpod 提供程序和冻结模型。所以我使用

build_runner

包来生成这个

.g.dart

文件，但是当我运行

dart run build_runner watch

时突然出现此错误：

[INFO] Generating build script completed, took 152ms
[WARNING] ../../../../../.pub-cache/hosted/pub.dev/riverpod_generator-3.0.0-dev.4/lib/src/templates/family.dart:230:48: Error: The getter 'metadata' isn't defined for the class 'AstNode'.
 - 'AstNode' is from 'package:analyzer/src/dart/ast/ast.dart' ('../../../../../.pub-cache/hosted/pub.dev/analyzer-6.2.0/lib/src/dart/ast/ast.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'metadata'.
    final meta = metaAnnotations(provider.node.metadata);
                                               ^^^^^^^^
[INFO] Precompiling build script... completed, took 625ms
[SEVERE] Failed to precompile build script .dart_tool/build/entrypoint/build.dart.
This is likely caused by a misconfigured builder definition.

我看过几篇关于这个问题的帖子，但任何建议的答案似乎都有效。 所以我尝试了几件事：

dart run build_runner build --delete-conflicting-outputs

删除

pubspec.lock

文件

flutter clean

和

flutter pub get

使用

flutter pub upgrade

将软件包升级到最新版本 按照一篇文章中的建议添加

analyzer

依赖包。 尝试过

dart run build_runner doctor

但得到了相同的输出。 我还尝试了

flutter chache repair

和

flutter pub get

并手动删除缓存存储的 int

.dart_tool/

目录，但没有任何效果。 我已经被困在这个问题上几个小时了，但没有任何效果，我不知道可能出了什么问题。 这是我的

pubscpec.yaml

文件

name: myapp
description: A new Flutter project.
publish_to: none
version: 1.0.0+1
environment:
  sdk: '>=3.0.5 <4.0.0'
  flutter: ">=3.0.0"
  
dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^1.0.2
  flutter_riverpod: ^2.3.6
  riverpod_annotation: ^2.2.0
  analyzer:
dev_dependencies:
  flutter_test:
    sdk: flutter
  flutter_lints: ^2.0.0
  riverpod_generator: ^3.0.0-dev.3
  riverpod_lint: ^2.3.0
  build_runner: ^2.4.6
flutter:
  assets:
    - lib/shared/assets/images/
  fonts:
    - family: Mont-Bold
      fonts:
        - asset: lib/shared/assets/fonts/Mont-Bold.otf
    - family: Mont-SemiBold
      fonts:
        - asset: lib/shared/assets/fonts/Mont-SemiBold.otf
    - family: Mont-Heavy
      fonts:
        - asset: lib/shared/assets/fonts/Mont-Heavy.otf
uses-material-design: true

Answer 1

3.0.0-dev.4

的

riverpod_generator

版本有问题，暂时可以通过删除

3.0.0-dev.3

来严格使用

^

：

dev_dependencies:
  riverpod_generator: 3.0.0-dev.3