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