일을 하자

one.js

(function(){
function switchreturn(compare, a){
	for(var i in a.case)
		if(a.case[i][0].indexOf(compare)>-1)return a.case[i][1]
	return a.default
}
var one=function(){return 1}
one.toString=function(a){
	if(a==null || typeof a==='number' || (typeof a==='string' && (+a)+''!=='NaN') || typeof a!=='string')return '1'
	a=a.toLowerCase()
	return switchreturn(a.toLowerCase(), {
		'case':[
			[['ko', 'kor', 'korean'], '일'],
			[['ja', 'jpn', 'japanese', 'zh', 'chi', 'zho', 'chinese'], '一'],
			[['en', 'eng', 'english'], 'one']
		],
		'default':'1'
	})
}
one.stretch=function(){return '일이 늘어났다'}
one.increase=function(){return '일이 너무 많아졌다'}
one.decrease=function(){return '일이 줄어들지 않는다'}
module.exports=one

})(module)

case 'english': return 'one'
case 'chinese': return '一'
case 'japanese': return '一'