import chalk from 'chalk'; import * as dateformat from 'dateformat'; export default class Logger { private domain: string; private parentLogger: Logger; constructor(domain: string, parentLogger?: Logger) { this.domain = domain; this.parentLogger = parentLogger; } public log(level: string, message: string): void { if (this.parentLogger) { this.parentLogger.log(level, `[${this.domain}] ${message}`); } else { const time = dateformat(new Date(), 'HH:MM:ss'); console.log(`${chalk.gray(time)} ${level} [${this.domain}] ${message}`); } } public static error(message: string): void { (new Logger('')).error(message); } public static warn(message: string): void { (new Logger('')).warn(message); } public static succ(message: string): void { (new Logger('')).succ(message); } public static info(message: string): void { (new Logger('')).info(message); } public error(message: string): void { // 実行を継続できない状況で使う this.log(chalk.red.bold('ERROR'), chalk.red.bold(message)); } public warn(message: string): void { // 実行を継続できるが改善すべき状況で使う this.log(chalk.yellow.bold('WARN'), chalk.yellow.bold(message)); } public succ(message: string): void { // 何かに成功した状況で使う this.log(chalk.blue.bold('INFO'), chalk.green.bold(message)); } public info(message: string): void { // それ以外 this.log(chalk.blue.bold('INFO'), message); } }