antd-mobile date-picker 提示 date.year is not a function

Question

如题：

return ( <DatePicker
      visible={ this.props.isOpen }
      format={ this.transferFormat() }
      value={ this.props.value }
      mode={ this.transferMode() }
      onOk={ this.props.onSelect }
      minuteStep={ this.props.minuteStep || 15 }
      onDismiss={ this.props.onCancel }/> )