如何在Winston时间戳中更改时区？节点js

const { createLogger, format } = require('winston');
const { combine, timestamp, printf } = format;

// 定义自定义的时间戳格式
const customTimestamp = format((info, opts) => {
  if (opts.tz) {
    info.timestamp = new Date().toLocaleString('en-US', { timeZone: opts.tz });
  }
  return info;
});

// 创建Logger实例并设置时区
const logger = createLogger({
  format: combine(
    customTimestamp({ tz: 'Asia/Shanghai' }),
    timestamp(),
    printf((info) => {
      return `${info.timestamp} ${info.level}: ${info.message}`;
    })
  ),
  transports: [
    new winston.transports.Console()
  ]
});

// 测试日志输出
logger.info('This is a test log message');