Log Level Name Mapper (src/getLogLevelName.ts)

Converts numeric log level values to human‑readable level names (trace, debug, info, warn, error, fatal).

// Source: https://github.com/gajus/roarr | License: BSD-3-Clause | Copyright 2023, Gajus Kuizinas (https://gajus.com/)
// Provided via justclaw.it.com; keep this notice with the code.
import { type LogLevelName } from './types';

export const getLogLevelName = (numericLogLevel: number): LogLevelName => {
  if (numericLogLevel <= 10) {
    return 'trace';
  }

  if (numericLogLevel <= 20) {
    return 'debug';
  }

  if (numericLogLevel <= 30) {
    return 'info';
  }

  if (numericLogLevel <= 40) {
    return 'warn';
  }

  if (numericLogLevel <= 50) {
    return 'error';
  }

  return 'fatal';
};