Function dispatch

packages/qwik/src/qwikloader.ts:77–182

(
  element: Element & { _qc_?: QContext | undefined },
  onPrefix: string,
  ev: Event,
  eventName = ev.type
)

  }) as T;

const dispatch = async (
  element: Element & { _qc_?: QContext | undefined },
  onPrefix: string,
  ev: Event,
  eventName = ev.type
) => {
  const attrName = 'on' + onPrefix + ':' + eventName;
  if (element.hasAttribute('preventdefault:' + eventName)) {
    ev.preventDefault();
  }
  if (element.hasAttribute('stoppropagation:' + eventName)) {
    ev.stopPropagation();
  }
  const ctx = element._qc_;
  const relevantListeners = ctx && ctx.li.filter((li) => li[0] === attrName);
  if (relevantListeners && relevantListeners.length > 0) {
    for (const listener of relevantListeners) {
      // listener[1] holds the QRL
      const results = listener[1].getFn([element, ev], () => element.isConnected)(ev, element);
      const cancelBubble = ev.cancelBubble;
      if (isPromise(results)) {
        await results;
      }
      // forcing async with await resets ev.cancelBubble to false
      if (cancelBubble) {
        ev.stopPropagation();
      }
    }
    return;
  }
  const attrValue = element.getAttribute(attrName);
  if (attrValue) {
    const container = element.closest('[q\\:container]')! as QContainerElement;
    const qBase = container.getAttribute('q:base')!;
    const qVersion = container.getAttribute('q:version') || 'unknown';
    const qManifest = container.getAttribute('q:manifest-hash') || 'dev';
    const base = new URL(qBase, doc.baseURI);
    for (const qrl of attrValue.split('\n')) {
      const url = new URL(qrl, base);
      const href = url.href;
      const symbol = url.hash.replace(/^#?([^?[|]*).*$/, '$1') || 'default';
      const reqTime = performance.now();
      let handler: undefined | any;
      let importError: undefined | 'sync' | 'async' | 'no-symbol';
      let error: undefined | Error;
      const isSync = qrl.startsWith('#');
      const eventData: QwikSymbolEvent['detail'] = {
        qBase,
        qManifest,
        qVersion,
        href,
        symbol,
        element,
        reqTime,
      };
      if (isSync) {
        const hash = container.getAttribute('q:instance')!;
        handler = ((doc as any)['qFuncs_' + hash] || [])[Number.parseInt(symbol)];