Get locale variable from query, subdomain, the last domain, accept-languages or cookie for koa.
$ npm install koa-localevarapp=require('koa')();varlocale=require('koa-locale');// the locale key name defaults to `locale`locale(app,'language');app.use(function*(next){// query: '?language=en'this.body=this.getLocaleFromQuery();});/?locale=en-US zh-CN.koajs.com Accept-Language: zh-CN,zh;q=0.5 Cookie: locale=zh-TW http://koajs.com/en options ={offset: 2 } http://koajs.com/foo/bar/en http://koajs.com/ http://koajs.cn/ http://koajs.it/ MIT