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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.import { type LevelName, LogLevels } from "./levels.ts";import type { LogRecord } from "./logger.ts";import { blue, bold, red, yellow } from "../fmt/colors.ts";import { BaseHandler, type BaseHandlerOptions } from "./base_handler.ts";
export interface ConsoleHandlerOptions extends BaseHandlerOptions {  useColors?: boolean;}
/** * This is the default logger. It will output color coded log messages to the * console via `console.log()`. */export class ConsoleHandler extends BaseHandler {  #useColors?: boolean;
  constructor(levelName: LevelName, options: ConsoleHandlerOptions = {}) {    super(levelName, options);    this.#useColors = options.useColors ?? true;  }
  override format(logRecord: LogRecord): string {    let msg = super.format(logRecord);
    if (this.#useColors) {      msg = this.applyColors(msg, logRecord.level);    }
    return msg;  }
  applyColors(msg: string, level: number): string {    switch (level) {      case LogLevels.INFO:        msg = blue(msg);        break;      case LogLevels.WARN:        msg = yellow(msg);        break;      case LogLevels.ERROR:        msg = red(msg);        break;      case LogLevels.CRITICAL:        msg = bold(red(msg));        break;      default:        break;    }
    return msg;  }
  override log(msg: string) {    console.log(msg);  }}