Manual DI

export interface Logger {
  info: (msg: string) => void
  warn: (msg: string) => void
  error: (msg: string) => void
}

export class ConsoleLogger implements Logger {
  info(msg: string): void {
    console.log("Console Logger:    ", msg)
  }
  warn(msg: string): void {}
  error(msg: string): void {}
}

export class PinoLogger implements Logger {
  info(msg: string): void {
    console.log("Pino Logger:    ", msg)
  }
  warn(msg: string): void {}
  error(msg: string): void {}
}

export class PaymentService {
  private readonly logger: Logger
  constructor(_logger: Logger) {
    this.logger = _logger
  }

  sendMoney() {
    this.logger.info("inversify logger info")
    return true
  }
}

const logger =
  process.env.NODE_ENV === "production" ? new PinoLogger() : new ConsoleLogger()

const paymentService = new PaymentService(logger)
paymentService.sendMoney()