nestjs-playground/src/app.module.ts

import { Module } from '@nestjs/common';
import { TypeOrmModule, TypeOrmModuleOptions } from '@nestjs/typeorm'; // DEBUG: Is this necessary? Docs unclear.
import { DevtoolsModule } from '@nestjs/devtools-integration';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { Cat } from './cats/cats.entity';
import { CatsModule } from './cats/cats.module';

let dbConfig: TypeOrmModuleOptions;

if ( process.env.NODE_ENV === 'production' ) {
  dbConfig = {
    type: 'sqlite',
    database: 'database/database_development.sqlite3',
    entities: [Cat],
  }
} else {
  dbConfig = {
    type: 'sqlite',
    database: 'database/database_development.sqlite3',
    entities: [Cat],
  }
}

@Module({
  imports: [
    TypeOrmModule.forRoot(dbConfig),
    DevtoolsModule.register({ http: process.env.NODE_ENV !== 'production' }),
    CatsModule
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}