import type { LoggerService } from "@aponiajs/common";
import { AponiaFactory } from "@aponiajs/platform-elysia";
import { AppModule } from "../src/app.module.ts";

class ApplicationLogger implements LoggerService {
  log(message: unknown, ...parameters: unknown[]): void {
    console.log(message, ...parameters);
  }

  fatal(message: unknown, ...parameters: unknown[]): void {
    console.error(message, ...parameters);
  }

  error(message: unknown, ...parameters: unknown[]): void {
    console.error(message, ...parameters);
  }

  warn(message: unknown, ...parameters: unknown[]): void {
    console.warn(message, ...parameters);
  }
}

const application = await AponiaFactory.create(AppModule, {
  logger: new ApplicationLogger(),
});

The final parameter on system events is the framework subsystem context. A custom logger can use it for routing or structured fields.

For built-in JSON lines, prefer:

import { ConsoleLogger } from "@aponiajs/common";

const logger = new ConsoleLogger({ json: true });

Custom logger