feat: expose fork options in the MikroOrmModule options configuration object (#182)

Closes #181

Author: AlexBksiad

src/mikro-orm.providers.ts

@@ -1,4 +1,4 @@
-import { ConfigurationLoader, EntityManager, MetadataStorage, MikroORM, type AnyEntity, type EntityClass, type EntityClassGroup, type EntitySchema } from '@mikro-orm/core';
+import { ConfigurationLoader, EntityManager, MetadataStorage, MikroORM, type AnyEntity, type EntityClass, type EntityClassGroup, type EntitySchema, type ForkOptions } from '@mikro-orm/core';
 import { MIKRO_ORM_MODULE_OPTIONS, getEntityManagerToken, getMikroORMToken, getRepositoryToken, logger } from './mikro-orm.common';
 
 import { Scope, type InjectionToken, type Provider, type Type } from '@nestjs/common';
@@ -44,6 +44,7 @@ export function createEntityManagerProvider(
   scope = Scope.DEFAULT,
   entityManager: Type = EntityManager,
   contextName?: string,
+  forkOptions?: ForkOptions,
 ): Provider<EntityManager> {
   if (!contextName && entityManager !== EntityManager) {
     return {
@@ -57,7 +58,7 @@ export function createEntityManagerProvider(
   return {
     provide: contextName ? getEntityManagerToken(contextName) : entityManager,
     scope,
-    useFactory: (orm: MikroORM) => scope === Scope.DEFAULT ? orm.em : orm.em.fork(),
+    useFactory: (orm: MikroORM) => scope === Scope.DEFAULT ? orm.em : orm.em.fork(forkOptions),
     inject: [contextName ? getMikroORMToken(contextName) : MikroORM],
   };
 }

src/typings.ts

@@ -1,4 +1,4 @@
-import type { AnyEntity, EntityName as CoreEntityName, EntitySchema, IDatabaseDriver, Options } from '@mikro-orm/core';
+import type { AnyEntity, EntityName as CoreEntityName, EntitySchema, ForkOptions, IDatabaseDriver, Options } from '@mikro-orm/core';
 import type { MiddlewareConsumer, ModuleMetadata, Scope, Type } from '@nestjs/common';
 import type { AbstractHttpAdapter } from '@nestjs/core';
 
@@ -15,6 +15,14 @@ type MikroOrmNestScopeOptions = {
    * @see [NestJS Scope Hierarchy](https://docs.nestjs.com/fundamentals/injection-scopes#scope-hierarchy)
    */
   scope?: Scope;
+  /**
+   * An optional configuration object to use when forking the Event Manager if it is configured with a scope other than Scope.DEFAULT
+   *
+   * This configuration option has no effect when the scope is set to Scope.DEFAULT.
+   *
+   * https://mikro-orm.io/api/core/interface/ForkOptions
+   */
+  forkOptions?: ForkOptions;
 };
 
 export type MikroOrmMiddlewareModuleOptions = {