TypeORM connection provider as Connection class - typeorm

Question

Is it possible to use connection class as provide like here?
import { Connection, createConnection } from 'typeorm';
export const databaseProviders = [{
provide: Connection,
useFactory: async () => await createConnection({
type: 'postgres',
host: 'localhost',
port: 5432,
username: 'postgres',
password: 'postgres',
database: 'testo',
entities: [
__dirname + '/../**/*.entity{.ts,.js}',
],
logging: true,
synchronize: true,
}),
}];
To make imports work like:
constructor(
private connection: Connection,
) {
this.repository = connection.getRepository(Project);
}
In that case nestjs can't find dependency. I guess the problem is in typeorm, it is compiled to plain es5 function. But maybe there a solution for this?
repository to reproduce
UPDATE:
I found acceptable solution nestjs typeorm module, but don't understand why my Connection class is not worked, but it works well with strings. Hope #kamil-myśliwiec will help to understand.
modules: [
TypeOrmModule.forRoot(
[
Build,
Project,
],
{
type: 'postgres',
host: 'localhost',
port: 5432,
username: 'postgres',
password: 'postgres',
database: 'testo',
entities: [
Build,
],
logging: true,
synchronize: true,
}),
],
// And the n inject like this by entity name
#InjectRepository(Build) private repository: Repository<Build>,