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						- /**!
 -  * default-user-agent - index.js
 -  *
 -  * Copyright(c) fengmk2 and other contributors.
 -  * MIT Licensed
 -  *
 -  * Authors:
 -  *   fengmk2 <fengmk2@gmail.com> (http://fengmk2.com)
 -  */
 - 
 - 'use strict';
 - 
 - /**
 -  * Module dependencies.
 -  */
 - 
 - var osName = require('os-name');
 - 
 - var USER_AGENT = 'Node.js/' + process.version.slice(1)
 -   + ' (' + osName() + '; ' + process.arch + ')';
 - 
 - module.exports = function ua(name, version) {
 -   if (arguments.length !== 2) {
 -     return USER_AGENT;
 -   }
 -   return name + '/' + version + ' ' + USER_AGENT;
 - };
 
 
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