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Typescript -摩根和logger.stream导致lint错误
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Stack Overflow用户
提问于 2018-06-13 21:07:11
回答 2查看 3.1K关注 0票数 1

我尝试使用记录器流功能将Morgan日志附加到Winston。但是,一旦我尝试在使用摩根中间件时附加logger.stream,它就失败了,并显示以下消息:

Argument of type '"combined"' is not assignable to parameter of type 'FormatFn'.

下面是我的Winston初始化代码:

import * as appRoot from 'app-root-path';
import * as winston from 'winston';
import { Logger } from 'winston';
import * as fs from 'fs';
import * as stream from 'stream';

const dirLogs = `${appRoot}/logs`;

// It's call during initialization, we can block the thread
if (!fs.existsSync(dirLogs)) {
  fs.mkdirSync(dirLogs);
}
// define the custom settings for each transport (file, console)
const options = {
  file: {
    level: 'info',
    filename: `${dirLogs}/app.log`,
    handleExceptions: true,
    json: true,
    maxsize: 5242880, // 5MB
    maxFiles: 5,
    colorize: false,
  },
  console: {
    level: 'debug',
    handleExceptions: true,
    json: false,
    colorize: true,
  },
};

// Keep it simple to focus on the need first
// I think Logger should send logs to a logger service
const logger = new Logger({
  level: 'info',
  transports: [
    new winston.transports.File(options.file),
    new winston.transports.Console(options.console),
  ],
  exitOnError: false, // do not exit on handled exceptions
});

// If I don't use the stream.Duplex, it cause another lint error.
logger.stream = (options?: any) => new stream.Duplex({
  write: function (message: string, encoding: any) {
      logger.info(message.trim());
  }
});

export default logger;

然后是我尝试使用Morgan的代码。

// ... All import
import logger from './logger/index';

// ... Then later the code
this.expressApp.use(morgan('combined', { stream: logger.stream }));

我不确定我为什么会得到这个错误:/

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页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/50838074

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