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/** * tool/logger.ts * An ugly logger for fen * @author DominicMing */
// map for level to numberconst levelMap = {  "ALL": 0,  "TRACE": 1,  "DEBUG": 2,  "INFO": 3,  "WARN": 4,  "ERROR": 5,  "FATAL": 6,  "OFF": 7,} as { [key: string]: number };
// default level are given hereconst DEFAULT_LEVEL = "INFO";
/** * Logger class * @param option {{ *   level: number * }} */export class Logger {  // this printer means what pip u r using  private static printer = console;
  // logger level  level = levelMap[DEFAULT_LEVEL];
  constructor(opt = { level: DEFAULT_LEVEL }) {    let { level } = opt;
    if (typeof level === "string") {      level = level.toUpperCase();    }
    if (levelMap[level] > -1) {      this.level = levelMap[level];    }  }
  /**   * print info   * @param type {string}   * @param info {}   */  private print(type: string, info: Array<any>) {    if (levelMap[type] >= this.level) {      Logger.printer.log.apply(Logger.printer, [`[Fen][${type}]\t`, ...info]);    }  }
  /**   * change log level   * @param level {string}   */  changeLevel(level: string = DEFAULT_LEVEL) {    this.level = levelMap[level] || 0;  }
  trace(...info: any[]) {    this.print("TRACE", info);  }
  debug(...info: any[]) {    this.print("DEBUG", info);  }
  info(...info: any[]) {    this.print("INFO", info);  }
  warn(...info: any[]) {    this.print("WARN", info);  }
  error(...info: any[]) {    this.print("ERROR", info);  }
  fatal(...info: any[]) {    this.print("FATAL", info);  }}