fix: improve support for driver specific imports

Related: #123

Author: B4nan

src/mikro-orm-core.module.ts

@@ -152,15 +152,25 @@ export class MikroOrmCoreModule implements OnApplicationShutdown {
     }
 
     try {
+      let config;
+
       if (!options || Object.keys(options).length === 0) {
-        const config = await ConfigurationLoader.getConfiguration(false);
-        return config.getDriver().createEntityManager();
+        config = await ConfigurationLoader.getConfiguration(false);
+      }
+
+      if (!config && 'useFactory' in options!) {
+        config = new Configuration(await options.useFactory!(), false);
       }
 
-      if ('useFactory' in options) {
-        const config = new Configuration(await options.useFactory!(), false);
-        return config.getDriver().createEntityManager();
+      if (!config && options instanceof Configuration) {
+        config = options;
       }
+
+      if (!config && typeof options === 'object' && options && 'driver' in options) {
+        config = new Configuration(options, false);
+      }
+
+      return config?.getDriver().createEntityManager();
     } catch {
       // ignore
     }

tests/mikro-orm.module.test.ts

@@ -1,12 +1,9 @@
-import type { EntityRepository, Options } from '@mikro-orm/core';
-import { EntityManager, MikroORM } from '@mikro-orm/core';
+import { EntityRepository, Options, EntityManager, MikroORM } from '@mikro-orm/core';
 import { SqliteDriver } from '@mikro-orm/sqlite';
 import { Inject, Logger, Module, Scope } from '@nestjs/common';
 import { ContextIdFactory } from '@nestjs/core';
-import type { TestingModule } from '@nestjs/testing';
-import { Test } from '@nestjs/testing';
-import type { MikroOrmOptionsFactory } from '../src';
-import { CONTEXT_NAMES, MikroOrmModule, getEntityManagerToken, getMikroORMToken, getRepositoryToken } from '../src';
+import { TestingModule, Test } from '@nestjs/testing';
+import { MikroOrmOptionsFactory, CONTEXT_NAMES, MikroOrmModule, getEntityManagerToken, getMikroORMToken, getRepositoryToken } from '../src';
 import { Bar } from './entities/bar.entity';
 import { Foo } from './entities/foo.entity';