Nest不能创建AuthModule实例

Question

当试图在用户模型和组之间建立链接时，会发生以下错误：

我不明白为什么..。

[Nest] 30312  - 06.12.2021, 20:53:42     LOG [NestFactory] Starting Nest application...
[Nest] 30312  - 06.12.2021, 20:53:42   ERROR [ExceptionHandler] Nest cannot create the AuthModule instance.
The module at index [1] of the AuthModule "imports" array is undefined.

Potential causes:
- A circular dependency between modules. Use forwardRef() to avoid it. Read more: https://docs.nestjs.com/fundamentals/circular-dependency
- The module at index [1] is of type "undefined". Check your import statements and the type of the module.

Scope [AppModule]
Error: Nest cannot create the AuthModule instance.
The module at index [1] of the AuthModule "imports" array is undefined.

app.module.ts https://pastebin.com/T9EC05gS

users.module.ts https://pastebin.com/inS044Xk

user.model.ts https://pastebin.com/wpyUs2SW

groups.module.ts https://pastebin.com/Jvr2Fuk3

group.model.ts https://pastebin.com/nBvkaEUt

auth.module.ts https://pastebin.com/MYQ2dw6y

auth.guard.ts https://pastebin.com/xDpQ8vwE

auth.service.ts https://pastebin.com/G9TzN3XF

提前感谢

UPD:在添加

  @Expose()
  @HasMany(() => Group)
  groups: Group[];

转到user.model.ts

Answer 1

在您的auth.module.ts文件中，而不是

import { UsersModule } from '../users';尝试

import { UsersModule } from '../users/user.module';

我相信这些桶文件(index.ts导出所有东西)在这里不是一个好的模式，因为它在NestJS模块之间引入了循环导入。

1 auth.module.ts imports users/index.ts (我猜它导出user.module.ts )

2 groups.module.ts imports auth/index.ts (我猜它导出auth.module.ts )

3 user.model.ts进口groups/index.ts

然后你就会得到一个导入3和3个导入1，这就是问题所在。