import cluster from 'node:cluster'; import chalk from 'chalk'; import { default as convertColor } from 'color-convert'; import { format as dateFormat } from 'date-fns'; import { bindThis } from '@/decorators.js'; import { envOption } from './env.js'; import type { KEYWORD } from 'color-convert/conversions'; type Context = { name: string; color?: KEYWORD; }; type Level = 'error' | 'success' | 'warning' | 'debug' | 'info'; export default class Logger { private context: Context; private parentLogger: Logger | null = null; private store: boolean; constructor(context: string, color?: KEYWORD, store = true) { this.context = { name: context, color: color, }; this.store = store; } @bindThis public createSubLogger(context: string, color?: KEYWORD, store = true): Logger { const logger = new Logger(context, color, store); logger.parentLogger = this; return logger; } @bindThis private log(level: Level, message: string, data?: Record | null, important = false, subContexts: Context[] = [], store = true): void { if (envOption.quiet) return; if (!this.store) store = false; if (level === 'debug') store = false; if (this.parentLogger) { this.parentLogger.log(level, message, data, important, [this.context].concat(subContexts), store); return; } const time = dateFormat(new Date(), 'HH:mm:ss'); const worker = cluster.isPrimary ? '*' : cluster.worker!.id; const l = level === 'error' ? important ? chalk.bgRed.white('ERR ') : chalk.red('ERR ') : level === 'warning' ? chalk.yellow('WARN') : level === 'success' ? important ? chalk.bgGreen.white('DONE') : chalk.green('DONE') : level === 'debug' ? chalk.gray('VERB') : level === 'info' ? chalk.blue('INFO') : null; const contexts = [this.context].concat(subContexts).map(d => d.color ? chalk.rgb(...convertColor.keyword.rgb(d.color))(d.name) : chalk.white(d.name)); const m = level === 'error' ? chalk.red(message) : level === 'warning' ? chalk.yellow(message) : level === 'success' ? chalk.green(message) : level === 'debug' ? chalk.gray(message) : level === 'info' ? message : null; let log = `${l} ${worker}\t[${contexts.join(' ')}]\t${m}`; if (envOption.withLogTime) log = chalk.gray(time) + ' ' + log; console.log(important ? chalk.bold(log) : log); if (level === 'error' && data) console.log(data); } @bindThis public error(x: string | Error, data?: Record | null, important = false): void { // 実行を継続できない状況で使う if (x instanceof Error) { data = data ?? {}; data.e = x; this.log('error', x.toString(), data, important); } else if (typeof x === 'object') { this.log('error', `${(x as any).message ?? (x as any).name ?? x}`, data, important); } else { this.log('error', `${x}`, data, important); } } @bindThis public warn(message: string, data?: Record | null, important = false): void { // 実行を継続できるが改善すべき状況で使う this.log('warning', message, data, important); } @bindThis public succ(message: string, data?: Record | null, important = false): void { // 何かに成功した状況で使う this.log('success', message, data, important); } @bindThis public debug(message: string, data?: Record | null, important = false): void { // デバッグ用に使う(開発者に必要だが利用者に不要な情報) if (process.env.NODE_ENV !== 'production' || envOption.verbose) { this.log('debug', message, data, important); } } @bindThis public info(message: string, data?: Record | null, important = false): void { // それ以外 this.log('info', message, data, important); } }