is-log-level-enabled.util.ts

import { LogLevel } from '../logger.service';

const LOG_LEVEL_VALUES: Record<LogLevel, number> = {
  verbose: 0,
  debug: 1,
  log: 2,
  warn: 3,
  error: 4,
};

/**
 * Checks if target level is enabled.
 * @param targetLevel target level
 * @param logLevels array of enabled log levels
 */
export function isLogLevelEnabled(
  targetLevel: LogLevel,
  logLevels: LogLevel[] | undefined,
): boolean {
  if (!logLevels || (Array.isArray(logLevels) && logLevels?.length === 0)) {
    return false;
  }
  if (logLevels.includes(targetLevel)) {
    return true;
  }
  const highestLogLevelValue = logLevels
    .map(level => LOG_LEVEL_VALUES[level])
    .sort((a, b) => b - a)?.[0];

  const targetLevelValue = LOG_LEVEL_VALUES[targetLevel];
  return targetLevelValue >= highestLogLevelValue;
}