element UI date组件报错

[health901]

复现版本 2.1.0, 2.0.9

TypeError: s.getTime is not a function
    at Object.date [as validator] (index.js:1:436495)
    at index.js:1:440259
    at o (index.js:1:429962)
    at Ys (index.js:1:429979)
    at index.js:1:430313
    at Array.forEach (<anonymous>)
    at Ks (index.js:1:430264)
    at la.validate (index.js:1:439172)
    at a.validate (index.js:1:444869)
    at a.n [as validate] (vue.min.js:6:1166)

demo里加上 Elm::date('date', '时间')->required(), 即可复现, 不设置required不会报错

date值变动时,会调用element的这个函数, 此时date控件的值是字符串形式的日期格式, 调用getTime()失败

            date: function(e, t, n, i, r) {
                var o = [];
                if (e.required || !e.required && i.hasOwnProperty(e.field)) {
                    if (qs(t) && !e.required)
                        return n();
                    if (na.required(e, t, i, o, r),
                    !qs(t)) {
                        var s = void 0;
                        s = "number" == typeof t ? new Date(t) : t,
                        na.type(e, s, i, o, r),
                        s && na.range(e, s.getTime(), i, o, r)
                    }
                }
                n(o)
            },

element-ui库更新至element-ui@2.15.14,问题依然存在