ITI

import { createContainer } from "iti"
// prettier-ignore
interface Logger { info: (msg: string) => void }
// prettier-ignore
class ConsoleLogger implements Logger { info(msg: string): void { console.log("[Console]:", msg) } }
// prettier-ignore
class PinoLogger    implements Logger { info(msg: string): void { console.log("[Pino]:"   , msg) } }

interface UserData {
  name: string
}

class AuthService {
  async getUserData(): Promise<UserData> {
    return { name: "Big Lebowski" }
  }
}

class User {
  constructor(private data: UserData) {}
  name = () => this.data.name
}

class PaymentService {
  constructor(private readonly logger: Logger, private readonly user: User) {}
  sendMoney() {
    this.logger.info(`Sending monery to the: ${this.user.name()} `)
    return true
  }
}

export async function runMyApp() {
  const root = createContainer()
    .add({
      logger: () =>
        process.env.NODE_ENV === "production"
          ? new PinoLogger()
          : new ConsoleLogger(),
    })
    .add({ auth: new AuthService() })
    .add((ctx) => ({
      user: async () => new User(await ctx.auth.getUserData()),
    }))
    .add((ctx) => ({
      paymentService: async () =>
        new PaymentService(ctx.logger, await ctx.user),
    }))

  const ps = await root.items.paymentService
  ps.sendMoney()
}

console.log(" ---- My App START \n\n")
runMyApp().then(() => {
  console.log("\n\n ---- My App END")
})