Global module provider injection issue

[zyulyaev]

Bug Report

Current behavior

The issue arises in the following setup:
AppModule imports ModuleA(global) and ModuleB(non-global) and ConfigModule.forRoot,
ModuleA declares some REQUEST-scoped provider X with request context being injected,
ModuleB imports ConfigModule.forFeature, and declares some provider Y, without specifying a scope, with X and config being injected.

In such setup constructor for X injected into Y is not called (in case X is declared using class).
If X is declared via useFactory, null is injected into Y.

Input Code

https://github.com/zyulyaev/nest-global-module-issue

Expected behavior

X's constructor is called and its dependencies are injected.

Environment

Nest version: 7.1.2
 
For Tooling issues:
- Node version: v12.15.0
- Platform: macos

Others:
package manager: pnpm

[zyulyaev]

There are several workarounds:

1. explicitly import ModuleA into ModuleB,
2. or declare Y's scope = REQUEST,
3. or remove config from Y's constructor parameters.

[abbasvalliani]

Any updates on this? I am running into a similar issue.

[uamanager]

Hey guys, I'm facing same issue when using Request Scoped Provider even not directly in Global Guard. Constructor of this Global Guard is not called and canActivate method throwing errors because DI is not working.

I need Request Scoped Provider to gather temporary data from request. If there is another way to do this, until issue is fixed - LMK. (Param decorator is not a solution in my case)

[jmcdo29]

nestjs/graphql#325 may have a solution you're looking for, using ModuleRef andContextIdFactory

[KostyaTretyak]

If in NestJS DI works similarly to Angular DI, then the injectors are connected by a hierarchical connection. Therefore, from the lower scope (request) you can ask providers from the higher scope (application), but not vice versa.

As far as I understand, you are trying to get from the application scope the request scope. Yes? If so, then of course you need:

declare Y's scope = REQUEST,

And you can remove request scope from X provider.