nitro/priv/js/validation.js

function validateSources(list) {
    return list.reduce(function(acc,x) {
        var event = new CustomEvent('validation');
            event.initCustomEvent('validation',true,true,querySourceRaw(x));
        var el = qi(x),
            listener = el && el.validation,
            res = !listener || listener && el.dispatchEvent(event);
        if (!res) { console.log("Validation failed:" + x); }
        if (el) el.style.background = res ? '' : 'pink';
        return res && acc; },true); }

(function () {
   function CustomEvent ( event, params ) {
       params = params || { bubbles: false, cancelable: false, detail: undefined };
       var evt = document.createEvent( 'CustomEvent' );
       evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
       return evt;  };
  CustomEvent.prototype = window.Event.prototype;
  window.CustomEvent = CustomEvent; })();