Handsontable - Validator 正则校验 Bug

{   // 用户名data: "userName",
type: 'text',
validator (val, callback) {
letpattern=/^.{1,20}$/// console.log(pattern.test(val))if(pattern.test(val)) returncallback(true)
returncallback(false)
    }
}

{   // 用户名data: "userName",
type: 'text',
validator (val, callback) {
if(that.util.isEmpty(val)) returncallback(false)
letpattern=/^.{1,20}$/// console.log(pattern.test(val))if(pattern.test(val)) returncallback(true)
returncallback(false)
    }
}