myblog/node_modules/hexo-server/lib/middlewares/logger.js

'use strict';

var morgan = require('morgan');

module.exports = function(app) {
  var config = this.config;
  var args = this.env.args || {};
  var logger = args.l || args.log || config.server.log;

  if (!logger && !args.debug) return;
  if (typeof logger !== 'string') logger = 'dev';

  app.use(morgan(logger));
};