小编Mr.*_*ble的帖子

Flutter_test 依赖于meta 1.1.8，firebase_login 依赖于meta ^1.2.2。firebase_login 依赖于 flutter_test 任何来自 sdk 的版本，解决失败。酒吧失败

pubspec.yaml

version: 1.0.0+1

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  firebase_auth: ^0.18.0+1
  equatable: ^1.2.4
  google_sign_in: ^4.5.3
  meta: ^1.2.2

  cupertino_icons: ^0.1.3

dev_dependencies:
  flutter_test:
    sdk: flutter
  lint: any

尝试使用内置值生成器时出错

这是我得到的错误。

[INFO] Running build...
[INFO] Generating SDK summary.
[SEVERE] built value generator:built value on lib/json_parsing.dart:
Bad state: Unexpected diagnostics:
C:\src\flutter\bin\cacheldart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] built_value_generator:built_value on lib/json_parsing.dart:

Bad state: Unexpected diagnostics:
C:\src\Flutter\bin\cache\dart-sdk\lib\core uri.dart:3259:39 - Expected an identifier.

[SEVERE] built_value_generator:built_value on lib/json_parsing.dart:

Bad state: Unexpected diagnostics:
C:\src\flutter\bin\cache\dart-sdk\lib\coreluri.dart:3259:39 - Expected an identifier.

我用来运行内置值生成器的类

import 'package:built_value/built_value.dart';

part 'src/json_parsing.g.dart';

abstract class Article implements Built<Article, ArticleBuilder> {
  Article._();
  factory Article([void Function(ArticleBuilder) updates]) = _$Article;
}