define([
    'jquery',
   'moment'
], function ($, moment) {
   'use strict';

   return function (validator) {

       validator.addRule(

           'validate-jurgis',
           function (value) {
               if (value.match(/d/)) {return true;}
                   else {return false;}

           },
            $.mage.__("Address should contain house number")

       );

       return validator;
   };
});

<script type="text/x-magento-init">
    {
        "*": {
            "Vendor_namespace/js/validator-mixin":{"message":"<?php echo "message text";?>"}
        }
    }
    </script>

validator.addRule is not a function