feat: introduce extra providers for for root async

packages/bull/lib/bull.module.ts

@@ -124,7 +124,9 @@ export class BullModule {
       global: true,
       module: BullModule,
       imports,
-      providers,
+      providers: asyncSharedBullConfig.extraProviders
+        ? [...providers, ...asyncSharedBullConfig.extraProviders]
+        : providers,
       exports: providers,
     };
   }

packages/bull/lib/interfaces/shared-bull-config.interface.ts

@@ -1,5 +1,9 @@
-import { FactoryProvider, ModuleMetadata, Type } from '@nestjs/common';
-import * as Bull from 'bull';
+import {
+  FactoryProvider,
+  ModuleMetadata,
+  Provider,
+  Type,
+} from '@nestjs/common';
 import { BullRootModuleOptions } from './bull-module-options.interface';
 
 export interface SharedBullConfigurationFactory {
@@ -31,4 +35,9 @@ export interface SharedBullAsyncConfiguration
    * Optional list of providers to be injected into the context of the Factory function.
    */
   inject?: FactoryProvider['inject'];
+
+  /**
+   * Extra providers to be registered in the module context.
+   */
+  extraProviders?: Provider[];
 }

packages/bullmq/lib/bull.module.ts

@@ -175,7 +175,9 @@ export class BullModule {
       global: true,
       module: BullModule,
       imports,
-      providers,
+      providers: asyncSharedBullConfig.extraProviders
+        ? [...providers, ...asyncSharedBullConfig.extraProviders]
+        : providers,
       exports: providers,
     };
   }

packages/bullmq/lib/interfaces/shared-bull-config.interface.ts

@@ -1,4 +1,9 @@
-import { FactoryProvider, ModuleMetadata, Type } from '@nestjs/common';
+import {
+  FactoryProvider,
+  ModuleMetadata,
+  Provider,
+  Type,
+} from '@nestjs/common';
 import * as Bull from 'bullmq';
 
 export interface BullModuleExtraOptions {
@@ -47,4 +52,9 @@ export interface SharedBullAsyncConfiguration
    * Extra options for the Bull module.
    */
   extraOptions?: BullModuleExtraOptions;
+
+  /**
+   * Extra providers to be registered in the module context.
+   */
+  extraProviders?: Provider[];
 }