我在我的开发机器上用Node.js服务器设置了一个Winston日志记录器。根据dbState，我更改了日志文件的名称：

const { createLogger, transports, format } = require('winston');
const keys = require('../config/keys');

const dbState = keys.db.state;

const customFormat = format.combine(format.timestamp(), format.printf((info) => `${info.timestamp} [${info.level.padEnd()}]: ${info.message}`));

const logger = createLogger({
  format: customFormat,

  transports: [
    new transports.File({ filename: `${dbState}-error.log`, level: 'error' }),
    // After it reaches 10MB, it will create a new file and start writing to that
    new transports.File({ filename: `${dbState}-combined.log`, maxsize: 10000000 }),
  ],
});

logger.stream = {
  write(message, _encoding) {
    console.log(message.trim());
    logger.info(message.trim());
  },
};

module.exports = logger;

我现在已经把这个更新推到Heroku了，那里的日志文件可能正在增加。是否有访问此日志文件的方法？