off()

in src/site/assets/js/bootstrap.esm.js [509:544]

• 29 lines of code
• 11 McCabe index (conditional complexity)

  off(element, originalTypeEvent, handler, delegationFn) {
    if (typeof originalTypeEvent !== 'string' || !element) {
      return;
    }

    const [delegation, originalHandler, typeEvent] = normalizeParams(originalTypeEvent, handler, delegationFn);
    const inNamespace = typeEvent !== originalTypeEvent;
    const events = getEvent(element);
    const isNamespace = originalTypeEvent.startsWith('.');

    if (typeof originalHandler !== 'undefined') {
      // Simplest case: handler is passed, remove that listener ONLY.
      if (!events || !events[typeEvent]) {
        return;
      }

      removeHandler(element, events, typeEvent, originalHandler, delegation ? handler : null);
      return;
    }

    if (isNamespace) {
      Object.keys(events).forEach(elementEvent => {
        removeNamespacedHandlers(element, events, elementEvent, originalTypeEvent.slice(1));
      });
    }

    const storeElementEvent = events[typeEvent] || {};
    Object.keys(storeElementEvent).forEach(keyHandlers => {
      const handlerKey = keyHandlers.replace(stripUidRegex, '');

      if (!inNamespace || originalTypeEvent.includes(handlerKey)) {
        const event = storeElementEvent[keyHandlers];
        removeHandler(element, events, typeEvent, event.originalHandler, event.delegationSelector);
      }
    });
  },