logbuddy-js/lib/utils/log-level.js

🪵 Your friendly neighborhood logging companion for Node.js applications with intelligent file rotation and flexible configuration

class LogLevel {
  static #Debug = 0;
  static #Info = 1;
  static #Warn = 2;
  static #Error = 3;
  static #Critical = 4;

  static get Debug() {
    return this.#Debug;
  }

  static get Info() {
    return this.#Info;
  }

  static get Warn() {
    return this.#Warn;
  }

  static get Error() {
    return this.#Error;
  }

  static get Critical() {
    return this.#Critical;
  }

  static assert(log_level) {
    if (
      ![this.Debug, this.Info, this.Warn, this.Error, this.Critical].includes(
        log_level
      )
    ) {
      throw new Error(
        `log_level must be an instance of LogLevel. Unsupported param ${JSON.stringify(
          log_level
        )}`
      );
    }
  }

  static to_string(log_level) {
    const levelMap = {
      [this.Debug]: "DEBUG",
      [this.Info]: "INFO",
      [this.Warn]: "WARN",
      [this.Error]: "ERROR",
      [this.Critical]: "CRITICAL",
    };

    if (levelMap.hasOwnProperty(log_level)) {
      return levelMap[log_level];
    }

    throw new Error(`Unsupported log level ${log_level}`);
  }
}

module.exports = { LogLevel };