npm install --save validate-chain

// es5
var VC = require("validate-chain")

// es6
import VC form "validate-chain"

// VC 为全局变量
var vc = new VC( objectData )
vc.check("name").required("名字为必填项");
//console.log( vc.errors )

import VC from "validate-chain";

var objectData = {age:22,name:"eisneim",gender:"guy",email:"ss.kjk",nested:{a:{b:{v:33}}}}
validator.loginForm() => {
	var vc = new VC( objectData )
	vc.check("email").email()
		.check("desc").alias("描述").required()
		.check("opt").optional().max(2,"must not bigger than 2");
	//或者
	vc.check("name").required("名字为必填项").$apply(function(value){
		// 自定义的判断逻辑
		return value && value.length>2
	},"名字的长度至少两个字符");
	vc.check("age").required().min(23).numeric().in([22,33,44])//可以一直链下去
	vc.check("gender").alias("性别").regx(/male|female/).in(["男","女"])
	// 多层结构
	vc.check("nested.a.b.v").max(30)

	console.log( vc.errors )
  // 如果没有任何错误，vc.errors === null
	//["描述: 为必填字段", "age: 最小值为23", "性别: 不合格/male|female/的格式", "ss.kjk不是常规的email"]
	console.log( vc.sanitized )
	// {name: "eisneim"}
	// vc.errorFields: [ "desc", "age", ... ]
}

const mock = {
	sub: {
		age: 10,
		name: 'terry'
	}
}
it('compose and check sub doc', function() {
	var vc = new VC(mock)
	vc.compose('sub', function(child) {
		child.check('age').min(18)
		child.check('name').min(2)
	})
	expect(vc.errors).to.have.length(1)
	expect(vc.sanitized.sub.name).to.equal('terry')
})

it('use stand alone vc function', function() {
	var childChecker = function(){
		var vv = new VC(mock.sub)
		vv.check('age').min(18)
			.check('name').min(2)
		return vv
	}

	var vc = new VC(mock)
	vc.compose('sub', childChecker)
	expect(vc.errors).to.have.length(1)
	expect(vc.sanitized.sub.name).to.equal('terry')
})

describe('vc.flatedArray', function() {
	var flated = {
		'id1':{name:'eisneim',age:17},
		'id2':{name:'terry',age:22},
	}
	var data = {
		flated: flated,
	}

	it('check flatedArray for each child', function() {
		var vc = new VC(flated)
		vc.flatedArray(function(each) {
			each.check('name').required()
				.check('age').min(18)
		})
		expect(vc.errors).to.have.length(1)
		expect(vc.sanitized.id2.age).to.equal(22)
	})

	it('deal with flatedArray as a child', function() {
		var vc = new VC(data)
		vc.flatedArray('flated', function(each) {
			each.check('name').required()
				.check('age').min(18)
		})
		expect(vc.errors).to.have.length(1)
		expect(vc.sanitized.flated.id2.age).to.equal(22)
	})

	it('accept stand alone function', function() {
		var childChecker = function(checker, eachData){
			var vv = new VC(eachData)
			return vv
				.check('name').required()
				.check('age').min(18)
		}
		var vc = new VC(data)
		vc.flatedArray('flated', childChecker)
		expect(vc.errors).to.have.length(1)
		expect(vc.sanitized.flated.id2.age).to.equal(22)
	})
})

var data = {
	levels:[ 1,3,4,5],
	posts:[
		{title:"some title ",date:"2014-20-3 12:22" },//错误日期
		{title:"不和谐的标题",date:"2014-12-3 12:22" }],
}
var vc = new VC( data );

vc.check("levels").alias("等级").array(function(item,index){
	// 对于数组里的没一个值都检查一遍，如果fail，错误信息将被记录
	item.max(3)
})

vc.check("posts").array( function( item,index ){
	// 如果数组了的元素是一个对象，则使用.check来进行检查(目前不支持数组内部元素的消毒);
	item.check("date").date();
	item.check("name").required();
})

expect(vc.errors).to.have.length(5); // -> pass
/**
[ '等级.2: 最大值为3',
  '等级.3: 最大值为3',
  'posts.0.date: 2014-20-3 12:22不符合日期格式',
  'posts.0: 为必填字段',
  'posts.1: 为必填字段'
] **/

var data = {
	name:"  小明 ",
	nested:{
		name:" 小明 "
	},
	array:[" 小明 "],
	objOfArray:[
		{name:" 小明 "},
	]
}
vc.check("name").required().trim();
vc.check("nested.name").required().trim();
vc.check("array").required().array(function(item,index){
	item.trim()
})
vc.check("objOfArray").required().array(function(item,index){
	item.check("name").required().trim();
})

console.log( vc.sanitized ) // {name:"小明",....}