How to use the config in main.ts?

I want to set app port using nestjs-config, how to use it in main.ts ?

[manjufy]

Specially for creating microservices, you would want to be able to configure host and port, this is how I did it

// config/config.ts

export const config = () => ({
  app: {
    host: process.env.HOST,
    port: parseInt(process.env.PORT),
  },
  database: {},
});

//main.ts

import { NestFactory } from '@nestjs/core';
import { Transport, MicroserviceOptions } from '@nestjs/microservices';
import { AppModule } from './app.module';
import { config } from './config/config';

async function bootstrap() {
  const appConfig = config().app;
  const host = appConfig.host;
  const port = appConfig.port;
  const microserviceOptions: MicroserviceOptions = {
    transport: Transport.TCP,
    options: {
      host,
      port,
    },
  };
  const app = await NestFactory.createMicroservice<MicroserviceOptions>(
    AppModule,
    microserviceOptions,
  );

  app.listen(() =>
    console.log(`Account service listning on port ${host}:${port}`),
  );
}

bootstrap();

//app.modules.ts

import { ConfigModule } from '@nestjs/config';
import { Module } from '@nestjs/common';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { AccountModule } from './account/account.module';
import { config } from './config/config';

@Module({
  imports: [
    ConfigModule.forRoot({
      isGlobal: true,
      load: [config],
    }),
    AccountModule,
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

[ahmadarif]

[solved]

const app = await NestFactory.create(AppModule);
await app.listen(app.get('ConfigService').get('app.port'));