logger.ts

type LogLevel = "log" | "info" | "error" | "debug" | "warning";

class Logger {
  constructor() {
    this.module = console;
  }
  
  format(message: string, level: LogLevel = "log"): string {
    const dateTime = new Date().toISOString();
    return JSON.stringify({ time: dateTime, level, message });
  }
  
  log(message: string, level: LogLevel = "log") {
    this.module.log(this.format(message, level));
  }
  
  info(message: string) {
    this.log(message, "info");
  }
   
  warning(message: string) {
    this.log(message, "warning");
  }
  
  error(message: string) {
    this.log(message, "error");
  }
  
  debug(message: string) {
    this.log(message, "debug");
  }
}

const logger = new Logger();

logger.log("test");
logger.info("Nothing important");
logger.warning("Warning!");
logger.error("Alert!");
logger.debug("Break point reached");