box-nestjs-monorepo/apps/box-mgnt-api/src/app.config.ts

import { ConfigType, registerAs } from '@nestjs/config';

export const appConfigFactory = registerAs('app', () => ({
  port: process.env.MGNT_PORT,
  host: process.env.MGNT_HOST,
  crossOrigin: process.env.MGNT_CORS_ORIGIN,
}));

export type IAppConfig = ConfigType<typeof appConfigFactory>;