這邊是我把 winston npm 官方文件抓下來改版的，改版後有時間戳記。 const winston = require("winston"); const logger = winston.createLogger({ level: 'info', format: winston.format.combine( winston.format.timestamp(), winston.format.json() ), defaultMeta: { service: 'user-service' }, transports: [ // // - Write all logs with importance level of `error` or less to `error.log` // - Write all logs with importance level of `info` or less to `combined.log` // new winston.transports.File({ filename: 'error.log', level: 'error', }), new winston.transports.File({ filename: 'combined.log' }), ], }); // // If we're not in production then log to the `console` with the format: // `${info.level}: ${info.message} JSON.stringify({ ...rest }) ` // if (process.env.NODE_ENV !== 'production') { logger.add(new winston.transports.Console({ format: winston.format.si...