Node.js-如何在调试中使用morgan [英] Nodejs - How to use morgan with debug

问题描述

摩根直接将请求输出到控制台.

Morgan outputs requests directly to the console.

如何将它们重定向到npm debug ，使其遵循与其他正在记录的东西?

How can I redirect them to npm debug so that it follows the same format as the other stuff which is being logged?

我的debug.js配置如下所示:

import debug from 'debug';

const LOG_PREFIX = 'api';

const info = debug(`${LOG_PREFIX}:info`);
const dev = debug(`${LOG_PREFIX}:dev`);
const error = debug(`${LOG_PREFIX}:error`);

export {
  info,
  dev,
  error,
};

我目前正在记录其他内容，例如:

And I currently log other stuff like:

import { info } from './debug';

info('App is up and running!');

我当前的摩根电话是:

app.use(morgan('combined'));

推荐答案

Morgan接受一个可选参数，该参数是

Morgan accepts an optional parameter which is the stream.

默认情况下，它指向控制台process.stdout.

By default it points to process.stdout, the console.

由于调用stream.write的作用，您可以轻松构建快速流，该流将重定向到您的debug.

Since what it does it to call stream.write, you can easily build a quick stream which redirects to your debug.

app.use(morgan('combined', { stream: { write: msg => info(msg) } }));

一般而言(但仍为 ES6 )，将是:

Generically (but still ES6), that would be:

import debug from 'debug';
const info = debug('info');
app.use(morgan('combined', { stream: { write: msg => info(msg) } }));

ES5 :

var info = require('debug')('info');
app.use(morgan('combined', { stream: { write: function(msg) { info(msg); } }}));

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